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Journal articles on the topic 'Antenna orientation'

Author: Grafiati

Published: 11 December 2022

Last updated: 31 July 2025

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1

Mohammed, Abdul Salam, Arshad Ali Mohammad, Palarimath Suresh, and Maqsood Mohammed. "IoT based antenna positioning system." i-manager's Journal on Information Technology 13, no. 1 (2024): 1. http://dx.doi.org/10.26634/jit.13.1.20541.

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Antennas are fundamental to every form of wireless communication system. Antenna placement is crucial for successful wireless communication, according to satellites and transmitters. So, to enable the use of IoT for remote antenna deployment, this paper provides an IoT-based antenna placement solution. In this case, this paper examines the transmitted orientation of each antenna over the Internet of Things using a sensor-based system that includes a motor on each antenna. When a satellite's or transmitting station's orientation changes, it is necessary to reposition the antenna. The receiving

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2

Kumari, Simpal, Deepak Kumar Barik, and Satyasis Mishra. "Identification of Patch Phase Array Antenna at 28GHz in Different Orientation for 5th Generation Wireless Application." Circulation in Computer Science MCSP2017, no. 01 (2017): 17–22. http://dx.doi.org/10.22632/ccs-2017-mcsp031.

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In this paper a wide band microstrip patch for next generation of wireless communication is proposed with three different configuration of patch array are designed with different orientation and excitation phase at 28GHz for 5th generation application. To think the current generation of the cellular mobile communication the rapidly increasing number of mobile devices, voluminous data and higher data rate are pushing. The proposed antenna is benefited at 28GHz frequency band. For the matching between radiating patch and the microstrip feedline inset feeding technique is used. With different ori

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Bhowmick, Snehal. "AN ORGANISED AND FOCUSED REVIEW OF A MICROSTRIP PATCH ANTENNA FOR ITS DEPLOYMENT IN BIOMEDICAL APPLICATIONS." INTERANTIONAL JOURNAL OF SCIENTIFIC RESEARCH IN ENGINEERING AND MANAGEMENT 08, no. 01 (2024): 1–6. http://dx.doi.org/10.55041/ijsrem28174.

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Reviewing microstrip antennas for diverse applications is the goal of this paper. The designing of microstrip patch antennae is a new study subject established for utilise in 5th generation communications applications. An antenna is a group of interconnected devices that work together to transmit and receive radio waves as a single antenna. Antennas come in many sizes and shapes. An antenna design that is low profile, lightweight, and results-oriented is the microstrip patch. In the future, microstrip patch antenna may be used for various 6G communication systems applications. Furthermore, 6G

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Sokolov, S. V., V. A. Pogorelov, and A. B. Shatalov. "Stochastic evaluation of orientation parameters for an antenna complex using strapdown inertial system measurements." Izmeritel`naya Tekhnika, no. 2 (2020): 11–19. http://dx.doi.org/10.32446/0368-1025it.2020-2-11-19.

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When solving the problem of high-precision spatial orientation of antennas of radio engineering complexes placed on high-rise masts of various designs, one of the main tasks is to increase the accuracy of their angular orientation in the conditions of inevitable disturbances of the mast base (due to wind disturbances, operation of various units, etc.) and interference of measurement of antenna orientation parameters by various measuring systems. Currently used methods based on measurements of satellite navigation systems and autonomous measurements of attitude and heading reference system do n

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MacWright Thomas, Charles, Huda A. Majid, Zuhairiah Zainal Abidin, Samsul Haimi Dahlan, Mohamad Kamal A. Rahim, and Raimi Dewan. "A Study on V-Shaped Microstrip Patch MIMO Antenna." Indonesian Journal of Electrical Engineering and Computer Science 5, no. 3 (2017): 606. http://dx.doi.org/10.11591/ijeecs.v5.i3.pp606-611.

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<p>A study on the V-shaped microstrip patch antenna for multiple-input multiple-output (MIMO) communication system based on the antenna orientation is performed. First the microstrip patch antenna operating at 2.45 GHz is calculated and simulated. Next, multiple element of antennas for MIMO system is simulated and discussed. V-shaped with 45 degree slanted inward and outward is studied. The antenna properties is analyzed and compact antenna design is determined based on the simulation results. The results shows the gap between antennas can be optimized to 1 mm while maintaining low mutua

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J., Muslimin, L. Asnawi A., F. Ismail A., Z. Jusoh A., A. Malek N., and A. M. Ramli H. "Experimental Studies on the Effect of Antenna Orientations to the Performance of OFDM-based System." International Journal of Electrical and Computer Engineering (IJECE) 8, no. 4 (2018): 2588–94. https://doi.org/10.11591/ijece.v8i4.pp2588-2594.

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Software-defined radio (SDR) is an emerging and promising high re-configurable platform for rapid prototyping inreal environment applications. It offers both flexibility and low cost to facilitate the development process of agile communication system, such as Orthogonal Frequency Division Multiplexing (OFDM). Other than modulation and transmission technique like OFDM, antenna orientations play a significant importance in wireless communication. The availabililty of SDR platform like USRP has enabled the empirical evaluation of antenna orientation to the system performance. The performance has

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Gui, Jaime, José L. Leiva, Aurora Andújar, Jaap Groot, Joan L. Pijoan, and Jaume Anguera. "Linearly Polarized Antenna Boosters versus Circularly Polarized Microstrip Patch Antennas for GPS Reception in IoT Devices." Energies 15, no. 24 (2022): 9623. http://dx.doi.org/10.3390/en15249623.

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GPS has become an attractive feature for geolocalization enabling asset tracking IoT devices. GPS satellite antennas radiate RHCP (right-hand circularly polarized) electromagnetic waves; thus, the typical antenna at the receiver is also RHCP. However, when the orientation of the receiving device is random, linear polarization antennas operate better in terms of TTFF (time to first fix). Through field measurements (urban and field) and considering different positions of the device in a vehicle, an RHCP microstrip patch antenna and a linear non-resonant antenna element called an antenna booster

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Islam, Tanvir, Fahad N. Alsunaydih, Fahd Alsaleem, and Khaled Alhassoon. "Analyzing the Performance of Millimeter Wave MIMO Antenna under Different Orientation of Unit Element." Micromachines 14, no. 11 (2023): 1975. http://dx.doi.org/10.3390/mi14111975.

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In this paper, a compact and simplified geometry monopole antenna with high gain and wideband is introduced. The presented antenna incorporates a microstrip feedline and a circular patch with two circular rings of stubs, which are inserted into the reference circular patch antenna to enhance the bandwidth and return loss. Roger RT/Duroid 6002 is used as the material for the antenna, and has overall dimensions of WS × LS = 12 mm × 9 mm. Three designs of two-port MIMO configurations are derived from the reference unit element antenna. In the first design, the antenna element is placed parallel t

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Tran, Tien, та Dung T. Huynh. "Symmetric Connectivity in Wireless Sensor Networks with π/3 Directional Antennas". International Journal of Foundations of Computer Science 33, № 02 (2022): 119–40. http://dx.doi.org/10.1142/s0129054122500022.

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Directional Wireless Sensor Networks (DWSNs) have been a very active research topic as they have a wide range of applications in both military and civilian areas. In this paper, we study the Antenna Orientation (AO) and Antenna Orientation and Power Assignment (AOPA) problems, two important issues in DWSNs. In the AO problem, given a set [Formula: see text] of sensors equipped with directional antennas with beam-width [Formula: see text], the objective is to determine an orientation of the antennas and a minimum transmission range [Formula: see text] such that the induced symmetric communicati

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10

Muslimin, J., A. L. Asnawi, A. F. Ismail, A. Z. Jusoh, N. A. Malek, and H. A. M. Ramli. "Experimental Studies on the Effect of Antenna Orientations to the Performance of OFDM-based System." International Journal of Electrical and Computer Engineering (IJECE) 8, no. 4 (2018): 2588. http://dx.doi.org/10.11591/ijece.v8i4.pp2588-2594.

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<span>Software-defined radio (SDR) is an emerging and promising high re-configurable platform for rapid prototyping inreal environment applications. It offers both flexibility and low cost to facilitate the development process of agile communication system, such as Orthogonal Frequency Division Multiplexing (OFDM). Other than modulation and transmission technique like OFDM, antenna orientations play a significant importance in wireless communication. The availabililty of SDR platform like USRP has enabled the empirical evaluation of antenna orientation to the system performance. The perf

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11

Nagy, Lajos. "Modified MIMO Cube for Enhanced Channel Capacity." International Journal of Antennas and Propagation 2012 (2012): 1–10. http://dx.doi.org/10.1155/2012/734896.

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This paper deals with the optimization of MIMO antenna elements' position in modified MIMO cube for getting maximal channel capacity in indoor environment. The dependence of the channel capacity on the antenna orientation was analyzed by simulations. We have also examined the effect of the frequency dependence of the antenna system (in case of conjugate matching and nonconjugate matching) for the channel capacity. Based on the simulation results in the created and measured antenna system, the antennas were at a right angle to each other. At the two chosen different structures, we measured the

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Kuseyri, Sina. "Modelling and stabilization of a three-axis ship-mounted mobile antenna system." Proceedings of the Institution of Mechanical Engineers, Part M: Journal of Engineering for the Maritime Environment 231, no. 2 (2016): 533–41. http://dx.doi.org/10.1177/1475090216661908.

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A mobile satellite communication antenna is a device installed on a moving carrier for mobile satellite communication. Gimballed motorized pedestals are used to eliminate the effect of disturbance and maintain uninterrupted communication when the carrier is moving. Mobile satellite communication antennas are becoming increasingly more popular due many advantages of mobile satellite communication. In this paper, a three-axis ship-mounted antenna on a pedestal gimbal system is studied. We study the problem with a different perspective and method from the previous work for two-axis antenna pedest

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Musaev, Alexey, and Sergey Zinkin. "Analysis of methods for pointing earth station antennassatellite communications." Informatization and communication 4 (November 2020): 22–31. http://dx.doi.org/10.34219/2078-8320-2020-11-4-22-31.

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The antenna guidance of earth stations of satellite communication consists in such its spatial orientation in azimuth and angle of location, at which the antenna›s directional pattern would coincide with the direction to the repeater located on an artificial satellite of the Earth. The article analyzes the methods, as well as their features, of pointing the antennas of terrestrial satellite communication stations. Suggestions are made for future experimental studies.

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Buffi, Alice, Andrea Michel, Paolo Nepa, and Giuliano Manara. "Numerical analysis of wireless power transfer in near-field UHF-RFID systems." Wireless Power Transfer 5, no. 1 (2017): 42–53. http://dx.doi.org/10.1017/wpt.2017.16.

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A preliminary numerical analysis of the power transfer efficiency (PTE) for the forward link of near-field (NF) ultra high frequency (UHF)-radio frequency identification (RFID) systems is addressed in this paper, by resorting to an impedance matrix approach where the matrix entries are determined through full-wave simulations. The paper is aimed to quantify the NF-coupling effects on the PTE, as a function of the distance between the reader and tag antennas. To allow for a PTE comparison between different reader and tag antenna pairs, a benchmarking tag-loading condition has been assumed, wher

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Asiegbu, Nnaemeka Christopher, Mamilus Aginwa Ahaneku, Vincent Chukwudi Chijindu, et al. "A 2x2 Mimo Microstrip Patch Antenna Design For X-Band Applications Using Inverted Array Orientation Approach." Revista de Gestão Social e Ambiental 18, no. 12 (2024): e010070. https://doi.org/10.24857/rgsa.v18n12-090.

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Objective: The main goal of this research is to design and simulate a unique 2x2 multiple-input and multiple-output, (MIMO) Rectangular Microstrip Patch antenna (RMPA) using an inverted array orientation approach with keen interest in improving the radiation efficiency and performance characteristics of the X- band based antenna. Theoretical Framework: This work integrates principles from Electromagnetic theory, communication theory, and basic Microstrip antenna design concepts. The framework is built upon crucial design goals such as radiation efficiency, reliability, element orientation and

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Abdullah, M. A., M. K. A Rahim, N. A. Samsuri, and K. Kamardin. "On-Body Transmission Single-Band Diamond Dipole Antenna with Waveguide Jacket." Indonesian Journal of Electrical Engineering and Computer Science 10, no. 3 (2018): 1212. http://dx.doi.org/10.11591/ijeecs.v10.i3.pp1212-1220.

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This paper presents the investigation of on-body transmission single-band diamond dipole antenna with three different jackets. The jackets are named as normal jacket, grounding jacket and waveguide jacket. The on-body transmission is measured using two flexible single-band antennas attach to the jackets. A man with the height of 180 cm and 75 kg weight becomes as a model for the real measurement. The measurement is conducted in small space area by using portable network analyzer with flexible network cable. The measurement results show that the best performance for on-body transmission is with

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M., A. Abdullah, K. A. Rahim M., A. Samsuri N., and Kamardin K. "On-body Transmission Single-band Diamond Dipole Antenna with Waveguide Jacke." Indonesian Journal of Electrical Engineering and Computer Science 10, no. 3 (2018): 1212–20. https://doi.org/10.11591/ijeecs.v10.i3.pp1212-1220.

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This paper presents the investigation of on-body transmission single-band diamond dipole antenna with three different jackets. The jackets are named as normal jacket, grounding jacket and waveguide jacket. The on-body transmission is measured using two flexible single-band antennas attach to the jackets. A man with the height of 180 cm and 75 kg weight becomes as a model for the real measurement. The measurement is conducted in small space area by using portable network analyzer with flexible network cable. The measurement results show that the best performance for on-body transmission is with

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Qu, Chunyu, Jianli Li, Junfang Bao, and Zhuangsheng Zhu. "Design and Development of Array POS for Airborne Remote Sensing Motion Compensation." Remote Sensing 14, no. 14 (2022): 3420. http://dx.doi.org/10.3390/rs14143420.

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Multi-antenna airborne remote sensing systems have received more attention recently because they can realize high-resolution three-dimensional (3-D) imaging, such as array Synthetic Aperture Radar (SAR). Their high-precision imaging needs multi-antenna motion and relative motion between antennas. However, the existing facility and technology hardly meet the motion measurement precision demand of array SAR. To solve this problem, an array Position and Orientation System (POS) for airborne remote sensing motion compensation is designed and developed. It is composed of a high-precision POS, sever

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Okada, J., and Y. Toh. "Peripheral representation of antennal orientation by the scapal hair plate of the cockroach Periplaneta americana." Journal of Experimental Biology 204, no. 24 (2001): 4301–9. http://dx.doi.org/10.1242/jeb.204.24.4301.

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SUMMARY Arthropods have hair plates that are clusters of mechanosensitive hairs, usually positioned close to joints, which function as proprioceptors for joint movement. We investigated how angular movements of the antenna of the cockroach (Periplaneta americana) are coded by antennal hair plates. A particular hair plate on the basal segment of the antenna, the scapal hair plate, can be divided into three subgroups: dorsal, lateral and medial. The dorsal group is adapted to encode the vertical component of antennal direction, while the lateral and medial groups are specialized for encoding the

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Li, Junzhi, and Xin Ning. "The Spacecraft Parabolic Antenna Payload Orientation Estimation Method Based on the Step Effect of Measured Radar Cross Section Sequences." Remote Sensing 16, no. 22 (2024): 4259. http://dx.doi.org/10.3390/rs16224259.

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The analysis and processing of active radar image information is an important method for determining the payload orientation of non-cooperative targets. However, a challenge for spacecraft carrying parabolic antenna payloads is that active radar imaging is susceptible to defocus, making it difficult to achieve a reliable estimate of the orientation of such payloads. As such, this paper proposes a method for estimating the orientation of spacecraft parabolic antenna payloads based on radar-measured radar cross section (RCS) sequence data. By utilizing the step effect produced when the ground-ba

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Xie, Xicao, and Jie Wu. "Study on the Structural Parameters and Response Characteristics of the Tilted Antenna of Directional Electromagnetic Wave Resistivity Measuring Instrument." International Journal of Pattern Recognition and Artificial Intelligence 34, no. 02 (2019): 2058001. http://dx.doi.org/10.1142/s021800142058001x.

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The directional logging-while-drilling measurements enable to monitor the distance to formation boundaries and their orientation and facilitate proactive well placement, and thus can provide directionality information useful in detecting physical parameters such as bed boundaries, formation dip and formation azimuth, so the oil and gas recovery can be greatly improved. The characteristics of a kind of electromagnetic wave resistivity logging while drilling (LWD) tool with tilted antennas are computed via the magnetic-current-source dyadic Green’s function for horizontally stratified anisotropi

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DOBREV, STEFAN, EVANGELOS KRANAKIS, DANNY KRIZANC, JAROSLAV OPATRNY, OSCAR MORALES PONCE, and LADISLAV STACHO. "STRONG CONNECTIVITY IN SENSOR NETWORKS WITH GIVEN NUMBER OF DIRECTIONAL ANTENNAE OF BOUNDED ANGLE." Discrete Mathematics, Algorithms and Applications 04, no. 03 (2012): 1250038. http://dx.doi.org/10.1142/s1793830912500383.

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Traditional approaches to connectivity in sensor networks are based on the omnidirectional antenna model which relies on the assumption that the sensors send and receive in all directions. Current technologies make possible the utilization of sensors with directional antenna capabilities whereby the sensors send and/or receive along a sector of a predefined angle (or beam-width). Although several researchers in the scientific literature have investigated the impact of directional antennae on network throughput, energy consumption, as well as security very little is known concerning the effect

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Bou-El-Harmel, Abdelhamid, Ali Benbassou, Jamal Belkadid, and Nadia Mechatte. "Effect of Quasi-Isotropic Antenna Orientation on Indoor Multipath Propagation Characteristics in RSN Applications." International Journal of Antennas and Propagation 2017 (2017): 1–13. http://dx.doi.org/10.1155/2017/2686123.

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In the RFID sensor networks (RSN), the orientations of the antennas used in the network nodes have a significant influence on the propagation characteristics. In this article, we investigated the effects of the two antennas’ orientation of different radiation and polarization on the multipath propagation characteristics. This study is evaluated in a typical indoor environment by computer simulations based on the three-dimensional (3D) ray-tracing method. This method is based on geometric optics and uniform diffraction theory and also it offers significant advantages in terms of accurate and co

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Eric, Ndanga Adamou, Eke Samuel, Matanga Jacques, Doka Yamigno Serge, Nicolas Corrao, and Tan Phu Vuong. "Design and Characterization of a Traveling-Wave Antenna for Millimeter Applications in the Sub-THz Band." International Journal of Antennas and Propagation 2023 (December 30, 2023): 1–11. http://dx.doi.org/10.1155/2023/5201018.

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The main challenge in manufacturing antennas in the sub-THz band is their small size, which requires adapted manufacturing tools. This paper proposes a uniform linear 3 × 1 traveling-wave antenna array (ULTWAA) for millimetre applications in the sub-THz band. The designed array allows a continuous beam orientation of ±46.1° in the E-plane. A small quarter-wave line added to the ends of the antenna allows the beam to be oriented towards the inside of the antenna, cancelling out surface waves and adapting the impedance to the scanning angle. Thanks to this device, the waves produced are progress

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R., Shantha Selva Kumari, Guruarchana V., and Guruatchaya V. "Efficient High Gain Elliptically Polarized Phased MIMO Antenna." WSEAS TRANSACTIONS ON COMMUNICATIONS 22 (December 31, 2023): 206–10. http://dx.doi.org/10.37394/23204.2023.22.21.

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A phased MIMO antenna with a coaxial feed is designed to operate in the electromagnetic spectrum with the frequency range of 8 GHz to 12 GHz, which resonates at 9 GHz, is used in military and satellite communication. The ability of phased MIMO antennas to change the form and orientation of the radiation pattern without constantly moving the antenna is unique. The proposed approach can also improve radiation efficiency by maximizing array unit size. To validate the proposed method, an elliptical polarization phased antenna has been constructed as a planar array. A 2 to 2 planar dual polarized M

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Pajewski, Lara, Fabrizio Frezza, Marian Marciniak, Emanuele Piuzzi, and Giorgia V. Rossi. "Experimental Analysis of a Directive Antenna with a 3D-EBG Superstrate." Journal of Telecommunications and Information Technology, no. 3 (2017): 113–24. http://dx.doi.org/10.26636/jtit.2017.120017.

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A three-dimensional electromagnetic crystal is employed as a directivity-enhancing superstrate for planar antennas. The crystal is a woodpile made of alumina rods. In a shielded anechoic chamber, the performance of a patch antenna covered with the woodpile is measured. The superstrate is positioned at different distances from the antenna and its orientation is varied in the 8–12 GHz frequency range. The return loss, gain and radiation pattern in the E- and H-planes are measured. The electromagnetic behavior of Fabry-Perot cavities with woodpile mirrors, equivalent to the compound radiator, is

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Jaffar-Bandjee, Mourad, Gijs Krijnen, and Jérôme Casas. "Challenges in Modeling Pheromone Capture by Pectinate Antennae." Integrative and Comparative Biology 60, no. 4 (2020): 876–85. http://dx.doi.org/10.1093/icb/icaa057.

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Synopsis Insect pectinate antennae are very complex objects and studying how they capture pheromone is a challenging mass transfer problem. A few works have already been dedicated to this issue and we review their strengths and weaknesses. In all cases, a common approach is used: the antenna is split between its macro- and microstructure. Fluid dynamics aspects are solved at the highest level of the whole antenna first, that is, the macrostructure. Then, mass transfer is estimated at the scale of a single sensillum, that is, the microstructure. Another common characteristic is the modeling of

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Aksenenko, Evgeniy Vasilyevich, та Mikhailovna Anna Kondratyeva. "Ultrastructure of antennal sensilla of Cistogaster globosa (Fabricius, 1775) и Cylindromyia interrupta (Meigen, 1824) (Diptera: Tachinidae)". Samara Journal of Science 10, № 1 (2021): 14–19. http://dx.doi.org/10.17816/snv2021101101.

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The paper describes the ultrastructure of antennal sensilla among two species of tachinid flies (Diptera: Tachinidae). For this purpose, the antennae of the adult flies Cistogaster globosa (Fabricius, 1775) and Cylindromyia interrupta (Meigen, 1824) were examined using a scanning electron microscope (SEM). The choice of antennae as structures for studying the receptor organs is explained by the fact that among insects they are the main site of sensilla localization. There is also a high degree of oligomerization of the antenna segments, which determines the concentration of sensilla on the api

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Sacco, Giulia, Emanuele Piuzzi, Erika Pittella, and Stefano Pisa. "An FMCW Radar for Localization and Vital Signs Measurement for Different Chest Orientations." Sensors 20, no. 12 (2020): 3489. http://dx.doi.org/10.3390/s20123489.

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This work tests the ability of a frequency-modulated continuous wave (FMCW) radar to measure the respiratory rate and the heartbeat of a subject in challenging indoor scenarios. To simulate a realistic configuration for ambient assisted living (AAL) applications, in which the thorax orientation towards the antenna is typically unknown, four different scenarios were considered. Measurements were performed on five volunteers positioned with the chest, left, back, and right side facing the antenna, respectively. The 5.8 GHz radar and the antennas used for the measurements were suitably designed f

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Pirkl, Ryan J., and Kate A. Remley. "MIMO Channel Capacity in 2D and 3D Isotropic Environments." International Journal of Antennas and Propagation 2012 (2012): 1–11. http://dx.doi.org/10.1155/2012/676405.

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We analyze theoretical distributions of MIMO channel capacity for different antennas in 2D and 3D statistically isotropic environments, which may be generated by multiprobe anechoic and reverberation chambers, respectively. We observe that the two environments yield comparable capacity distributions provided that (1) the 2D statistically isotropic environment’s capacity data are taken at many different antenna orientations and (2) the radiation elements have a low directivity. When these conditions are met, we find that the relative error between the 2D statistically isotropic environment’s or

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Hasbi, Wahyudi, Kamirul, Mohammad Mukhayadi, and Udo Renner. "The Impact of Space-Based AIS Antenna Orientation on In-Orbit AIS Detection Performance." Applied Sciences 9, no. 16 (2019): 3319. http://dx.doi.org/10.3390/app9163319.

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In this paper, a study on the impact of changing the space-based Automatic Identification System (AIS) monopole antenna orientation on its message reception performance in orbit has been conducted. The study has been carried out by maneuvering the attitude of LAPAN-A2, an equatorial orbiting microsatellite with AIS antenna fixedly mounted on the satellite’s body, into the desired orientation. Based on the analysis of the datasets collected during the maneuver, the orientation of AIS monopole antenna 45° toward its flight direction increases the overall detection performance of the AIS message,

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Langhammer, Lisbeth, Lasse Rabenstein, Andreas Bauder, and Hansruedi Maurer. "Ground-penetrating radar antenna orientation effects on temperate mountain glaciers." GEOPHYSICS 82, no. 3 (2017): H15—H24. http://dx.doi.org/10.1190/geo2016-0341.1.

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Ground-penetrating radar (GPR) surveys on glaciers are generally restricted to a single pair of bistatic dipole antennas orientated either parallel or perpendicular to the surveying direction. Extensive helicopter-borne and ground-based GPR investigations on the Glacier d’Otemma, Switzerland, demonstrated that the detectability of the ice-bedrock interface varies substantially with dipole orientation. We recorded several across and along profiles using two different commercial GPR systems operated with 15, 25, 50, and 70 MHz antennas. Dipole alignments parallel to the glacier flow generated co

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Sujatha, M., T. Lavanya, P. Moulyanjani, Rao R. Narayana, and V. Srivani. "Design and analysis of multiband composite antenna with dual – sense circular polarization characteristics." i-manager’s Journal on Electronics Engineering 12, no. 2 (2022): 16. http://dx.doi.org/10.26634/jele.12.2.18582.

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In the current era of wireless communication, the antenna researchers are widely focused on two major areas such as bandwidth enhancement and generation circular polarization characteristics. Bandwidth enhancement provides higher data rate without any increment in power level. In the same way, orientation independency between transmitter and receiver antennas can be provided by circular polarization characteristic. In this project, a dual-sense Circularly Polarized (CP) hybrid antenna is reported. The antenna that is proposed works over the range of frequency 3.28 GHz to 5.78 GHz with a fracti

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M, Karthick, and Kalaivaani P.T. "OPTIMIZED MULTI-DIMENSIONAL ANTENNA SYSTEM FOR ENHANCED SIGNAL RECEPTION IN COMMUNICATION NETWORKS WITHIN REGULATORY LIMITS." ICTACT Journal on Microelectronics 11, no. 1 (2025): 2043–50. https://doi.org/10.21917/ijme.2025.0346.

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The increasing demand for high-performance wireless communication systems necessitates advanced antenna technologies that can ensure maximum signal strength without breaching regulatory standards. Conventional antenna systems often suffer from limited directionality and signal loss due to environmental interference and suboptimal configurations, affecting signal quality and system reliability. This study proposes a novel multi-dimensional antenna system designed using a hybrid optimization algorithm integrating Particle Swarm Optimization (PSO) and Genetic Algorithm (GA). The antenna configura

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Mohamed Sanad and Noha Hassan. "A review: Performance of multibeam dual parabolic cylindrical reflector antennas in LEO satellites." ITU Journal on Future and Evolving Technologies 5, no. 2 (2024): 221–29. http://dx.doi.org/10.52953/tsum9295.

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The characteristics of multibeam dual parabolic cylindrical reflector antennas are summarized in this article. They can generate an arbitrary number of beams with arbitrary tilt angles for each beam. They can be remotely controlled to cover any arbitrary area, of any shape and size, even if the antenna was mounted on a quasi-stationary platform. Their performance in Low-Earth Orbit (LEO) satellites and ground stations (terminals) have been presented. A simple beam tracking technique was developed. For any specific satellite orbit, the orientation of the ground-station antenna could be adjusted

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Kokkinis, Akis, Loizos Kanaris, Antonio Liotta, and Stavros Stavrou. "RSS Indoor Localization Based on a Single Access Point." Sensors 19, no. 17 (2019): 3711. http://dx.doi.org/10.3390/s19173711.

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This research work investigates how RSS information fusion from a single, multi-antenna access point (AP) can be used to perform device localization in indoor RSS based localization systems. The proposed approach demonstrates that different RSS values can be obtained by carefully modifying each AP antenna orientation and polarization, allowing the generation of unique, low correlation fingerprints, for the area of interest. Each AP antenna can be used to generate a set of fingerprint radiomaps for different antenna orientations and/or polarization. The RSS fingerprints generated from all anten

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Ivanova, G. A., and V. S. Khoroshilov. "On control of spacecraft orientation to the ground data acquisition station." Kosmičeskaâ tehnika. Raketnoe vooruženie 2023, no. 1 (2023): 41–47. http://dx.doi.org/10.33136/stma2023.01.041.

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The article dwells on the spacecraft attitude control to point the onboard antenna to the ground data acquisition station during the communication session. Antenna is fixed relative to the spacecraft body. Pur-pose of the antenna is to receive the flight task aboard the spacecraft and to downlink the telemetry infor-mation. When orbiting, the spacecraft position relative to the ground data acquisition station changes contin-uously. It is due to the diurnal rotation of the Earth, spacecraft orbital motion and angular motion of the spacecraft relative to the center of mass under the impact of th

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Sokolov, S. V., V. A. Pogorelov, and I. V. Reshetnikova. "Nonlinear stochastic estimation of the navigation parameters of the antenna of a mobile radio engineering complex by inertial-satellite measurements." Prikladnaâ matematika i mehanika 88, no. 4 (2024): 549–66. https://doi.org/10.31857/s0032823524040049.

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A general solution to the problem of stochastic estimation of navigation parameters of mast antennas of radio engineering complexes (RTCs) located on mobile objects is considered. It is shown that the existing methods for determining navigation parameters using measurements of satellite navigation systems or inertial orientation systems do not provide the required accuracy for solving this problem for such a class of antennas under the action of random disturbances on an object and/or mast. In this regard, an algorithm is proposed for stochastic estimation of the navigation parameters of a mas

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Suvidya, Pawar, Sreemathy R., and Hake Shahadev. "EFFECT OF DIFFERENT SYMMETRIC SLITS ON MICROSTRIP PATCH ANTENNA." EFFECT OF DIFFERENT SYMMETRIC SLITS ON MICROSTRIP PATCH ANTENNA 1, no. 4 (2022): 11. https://doi.org/10.5281/zenodo.6806355.

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In this paper, a basic linearly polarised microstrip square patch antenna operating at 2.4 GHz is proposed. We have modified the basic microstrip square patch antenna with rectangular shape slits, V shape slits and truncated corners to achieve circular polarization. Basically we have designed five different antennas to meet the specification. The various antennas have been simulated, fabricated and the performance has been tested on network analyser (Agilent Technologies: N9912A, SNMY51464189, ROHDE & SCHWARZ: ZVL13, 9 KHz to 13.6GHz,). The simulated and tested performance shows close agre

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Iohov, O., V. Maliuk, and Ye Kaplun. "ALGORITHM FOR DETERMINING THE BOUNDARIES OF THE ZONE OF INTERFERENCE OPERATION OF THE RADIO CHANNEL OF THE UHF / VHF RANGE COMMUNICATION IN THE CONDITIONS OF OPERATION OF THE RADIOSHENOPRIAD SOURCE SYSTEM AT DIFFERENT HEIGHTS." Collection of scientific works of the National Academyof the National Guard of Ukraine 1, no. 37 (2021): 38–51. http://dx.doi.org/10.33405/2409-7470/2021/1/37/237826.

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A method for determining the limits of the maximum size of the stable radio reception area in the UHF / VHF range for mobile radio communication under the conditions of the radio interference system is proposed. The radio is intended to use a directional antenna or screen. Increasing the size of the stable radio reception area is provided by the optimal orientation at each point of the antenna device in azimuth and angle using the model of the radio channel, which allows to calculate the signal / interference ratio taking into account the spatial location of radio interference sources and digi

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Iohov, O., V. Maliuk, and Ye Kaplun. "ALGORITHM FOR DETERMINING THE BOUNDARIES OF THE ZONE OF INTERFERENCE OPERATION OF THE RADIO CHANNEL OF THE UHF / VHF RANGE COMMUNICATION IN THE CONDITIONS OF OPERATION OF THE RADIOSHENOPRIAD SOURCE SYSTEM AT DIFFERENT HEIGHTS." Collection of scientific works of the National Academyof the National Guard of Ukraine 1, no. 37 (2021): 38–51. http://dx.doi.org/10.33405/2409-7470/2021/1/37/237826.

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A method for determining the limits of the maximum size of the stable radio reception area in the UHF / VHF range for mobile radio communication under the conditions of the radio interference system is proposed. The radio is intended to use a directional antenna or screen. Increasing the size of the stable radio reception area is provided by the optimal orientation at each point of the antenna device in azimuth and angle using the model of the radio channel, which allows to calculate the signal / interference ratio taking into account the spatial location of radio interference sources and digi

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Zheng, Jianfeng, Yue Li, and Zhenghe Feng. "Impact of Mutual Coupling and Polarization of Antennas on BER Performances of Spatial Multiplexing MIMO Systems." International Journal of Antennas and Propagation 2012 (2012): 1–12. http://dx.doi.org/10.1155/2012/795205.

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This paper is aimed at studying the impacts of mutual coupling, matching networks, and polarization of antennas on performances of Multiple-Input Multiple-Output (MIMO) systems employing Spatial Multiplexing (SM). In particular, the uncoded average Bit Error Rate (BER) of MIMO systems is investigated. An accurate signal analysis framework based on circuit network parameters is presented to describe the transmit/receive characteristics of the matched/unmatched antenna array. The studied arrays consist of matched/unmatched compact copolarization and polarization diversity antenna array. Monte-Ca

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Rajkumar, R., and P. Marichamy. "Wide Band Meandered-Loop Ground Radiation Antenna for Biomedical Applications." Journal of Medical Imaging and Health Informatics 11, no. 12 (2021): 2891–96. http://dx.doi.org/10.1166/jmihi.2021.3911.

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The concept of wireless implantable medical devices (IMDs) is becoming more popular as the world’s population ages and concerns about public health grow. Implantable antennas have figured prominently in wireless communication among IMDs and external infrastructures, yet they have subsequently become a major study area. Among the most difficult aspects of building implantable antennas is to varied physical tissues and fluids act as dielectric stress on antenna, affecting its efficiency dramatically. Ground radiation antenna was particularly designed for the antenna size reduction. The features

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Dmitriev, Victor, Rodrigo M. S. de Oliveira, Rodrigo R. Paiva та Nilton R. N. M. Rodrigues. "Multifunctional THz Graphene Antenna with 360∘ Continuous ϕ-Steering and θ-Control of Beam". Sensors 23, № 15 (2023): 6900. http://dx.doi.org/10.3390/s23156900.

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A novel graphene antenna composed of a graphene dipole and four auxiliary graphene sheets oriented at 90∘ to each other is proposed and analyzed. The sheets play the role of reflectors. A detailed group-theoretical analysis of symmetry properties of the discussed antennas has been completed. Through electric field control of the chemical potentials of the graphene elements, the antenna can provide a quasi-omnidirectional diagram, a one- or two-directional beam regime, dynamic control of the beam width and, due to the vertical orientation of the dipole with respect to the base substrate, a 360∘

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Csík, Dominik, Ákos Odry, Richard Pesti, and Peter Sarcevic. "Impact of Antenna Orientation on Localization Accuracy Using RSSI-based Trilateration." Analecta Technica Szegedinensia 18, no. 2 (2024): 22–29. http://dx.doi.org/10.14232/analecta.2024.2.22-29.

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The goal of the indoor localization is to determine the position and orientation of people, devices, and mobile robots. With the rise of Industry 4.0, wireless communication technologies have emerged as a rapidly evolving and crucial area for achieving this goal. Various radiocommunication-based technologies, including Bluetooth, Bluetooth Low Energy (BLE), Wi-Fi, Ultra-Wideband (UWB), and ZigBee offer means to indirectly estimate distance. These methods leverage diverse principles such as time-based measurements, signal strength, and angle of arrival. Indoor positioning systems can be categor

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Bhadravathi Ghouse, Parveez Shariff, Pallavi R. Mane, Tanweer Ali, et al. "A Low-Profile Circularly Polarized Millimeter-Wave Broadband Antenna Analyzed with a Link Budget for IoT Applications in an Indoor Scenario." Sensors 24, no. 5 (2024): 1569. http://dx.doi.org/10.3390/s24051569.

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Broadband antennas with a low-profile generating circular polarization are always in demand for handheld/ portable devices as CP antennas counter multipath and misalignment issues. Therefore, a compact millimeter-wave antenna is proposed in this article. The proposed antenna structure comprises two circular rings and a circular patch at the center. This structure is further embedded with four equilateral triangles at a 90° orientation. The current entering the radiator is divided into left and right circular directions. The equilateral triangles provide the return path for current at the diffe

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Ju , Xinjie, Xinda Li, Lin Gan , Jiapeng Yin , Chun Shen , and Jianbing Li . "Impact and Compensation of Rainfall Propagation Effect on Pol-ISAR Imaging of Parabolic Antenna." Remote Sensing 17, no. 5 (2025): 855. https://doi.org/10.3390/rs17050855.

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Orientation is an important parameter to identify the working status of a parabolic antenna. Polarimetric inverse synthetic aperture radar (Pol-ISAR) is an effective approach to sense the parabolic antenna, but the imaging process may be seriously deteriorated by the propagation effect under the rainfall condition. This paper proposes a method to compensate for the propagation effect of rainfall for accurately estimating the orientation parameter of a parabolic antenna from Pol-ISAR images. Numerical simulations show that the impact of the propagation effect for the Pol-ISAR imaging of a parab

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Wang, Wentian, Sixin Liu, Xuzhang Shen, and Wenjun Zheng. "3D Imaging Algorithm of Directional Borehole Radar Based on Root-MUSIC." Remote Sensing 13, no. 15 (2021): 2957. http://dx.doi.org/10.3390/rs13152957.

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A directional borehole radar consists of one transmitting antenna in the borehole and four receiving antennas distributed at equal angles in a ring. The receiving antennas can determine the depth and orientation of targets beside the borehole. However, the problem of target orientation determination and 3D imaging algorithms remains a technological challenge. The MUSIC (multiple signal classification) algorithm requires a peak search, so the accuracy of the operation is limited by the angle interval. Based on the MUSIC algorithm, the Root-MUSIC algorithm is proposed and implemented. By replaci

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Syihabuddin, Budi, Mohammad Ridwan Effendi, and Achmad Munir. "X-Band Metasurface EM Wave Absorber using SRR and Stripline: Model, Design and Implementation." Journal of ICT Research and Applications 18, no. 2 (2024): 155–74. http://dx.doi.org/10.5614/itbj.ict.res.appl.2023.18.2.6.

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This paper presents a model, design, and implementation of a metasurface electromagnetic (EM) wave absorber for operation in the frequency range of the X-band. The model of the metasurface was constructed with a split ring resonator (SSR) and a stripline and it was designed with a single unit cell, whereby the results were approached with transmission line theory for patch impedance extraction. Implementation of a metasurface EM wave absorber was deployed on an FR4 Epoxy dielectric substrate with dimensions of 80-unit cells 80-unit cells and characterized with two horn antennas, which were con

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Ma, Zhen, and Xiyuan Chen. "Analysis of Distributed Measurement Method for Array Antenna Position." Applied Sciences 10, no. 10 (2020): 3480. http://dx.doi.org/10.3390/app10103480.

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The measurement of the phase center of the airborne array antenna can directly affect the accuracy of the Earth observation system. However, the relationship between the relative motion of each sub-antenna cannot be accurately measured because of the adverse environment of the airborne platform. Therefore, it is necessary to find a suitable method to measure the motion parameters of distributed antennas and the phase center of each element antenna accurately in order to improve the imaging resolution of the Earth observation system. Distributed position and orientation system (POS) technology

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