Relevant bibliographies by topics / Directional patterns (antenna)

Contents

  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers

Academic literature on the topic 'Directional patterns (antenna)'

Author: Grafiati
Published: 5 June 2025
Last updated: 15 July 2025

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Journal articles on the topic "Directional patterns (antenna)"

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Chau, Arnold, John Dawson, Paul Mitchell, and Tian Hong Loh. "Virtual Sensing Directional Hub MAC (VSDH-MAC) Protocol with Power Control." Electronics 9, no. 8 (2020): 1219. http://dx.doi.org/10.3390/electronics9081219.

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Medium access control (MAC) protocols play a vital role in making effective use of a multiple access channel as it governs the achievable performance such as channel utilization and corresponding quality of service of wireless sensor networks (WSNs). In this paper, a virtual carrier sensing directional hub (VSDH) MAC protocol incorporating realistic directional antenna patterns is proposed for directional single hub centralized WSNs. While in most instances, MAC protocols assume idealized directional antenna patterns, the proposed VSDH-MAC protocol incorporates realistic directional antenna pa
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Ding, Rong, and Ran Dong Xiao. "Directional Pattern versus Omnidirectional Pattern of Switched Beamform Antennas for Asymptotic Connectivity." Applied Mechanics and Materials 235 (November 2012): 147–51. http://dx.doi.org/10.4028/www.scientific.net/amm.235.147.

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The connectivity of wireless networks is important for data transmission. Gupta and Kumar have already proved that if n nodes with omnidirectional antennas are located randomly, uniformly in a disk of unit area, the critical transmission range to achieve asymptotic connectivity is O( )[1]. In this work, we studied the network connectivity where nodes equipped with switched beamform antennas are randomly and uniformly distributed in a disc of unit area in R2, the antenna can be modeled in omnidirectional and directional patterns. We first assume that nodes in the network cooperate in routing eac
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Musa, Doaa Salim Mohammed, Ramazan Daşbaşı, and Burak Polat. "Evaluation of Radiation Performances of Various Aperture and Horn Antennas over Sea Surface." European Journal of Research and Development 2, no. 2 (2022): 429–44. http://dx.doi.org/10.56038/ejrnd.v2i2.89.

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Directional Currents Method (DCM) is applied to various aperture and horn antennas including rectangular aperture antenna, circular aperture antenna, dielectric loaded rectangular aperture antenna and E- and H-plane sectoral horn antennas to investigate their radiation performances analytically over sea surface in microwave bands. First, the expressions of the hypothetical directional currents of these antennas are derived in free space and the total radiation patterns are generated by MATLABTM. Then, the same antennas are simulated by the commercial electromagnetic simulation software CSTTM a
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Sedghi, Tohid, Mahdi Jalali, and Tohid Aribi. "Fabrication of CPW-Fed Fractal Antenna for UWB Applications with Omni-Directional Patterns." Scientific World Journal 2014 (2014): 1–5. http://dx.doi.org/10.1155/2014/391602.

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Novel and compact CPW-fed antennas are proposed comprised of a fractal patch and modified ground-plane. The ground-plane is truncated at the center and includes dielectric notches at its side to enhance the antenna’s impedance bandwidth. The dimensions of the notches effectively control the upper and lower band edges of the antenna. The optimized antenna operates across 2.95–12.81 GHz forS11≤-10 dB. Omnidirectional radiation pattern is achieved over the full UWB frequency range. The miniaturized antenna has a total size of14×18×1 mm3. The characteristics of the proposed antenna are suitable fo
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Radzivilov, H., M. Ilyinov, and P. Khomenko. "Features computation diagram of annular direction antenna arrays what made on half-wave vibrators located above cylindrical surface." Communication, informatization and cybersecurity systems and technologies, no. 5 (June 1, 2024): 130–37. http://dx.doi.org/10.58254/viti.5.2024.12.130.

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The use of antenna-feeder devices, especially installed on moving objects, indicates the need to modernize and develop new type antenna devices to increase the efficiency of the radio communication system in conditions of active radio electronic suppression. One of the options for providing interference protection in communication channels with moving objects is the use of narrowly directed Smart antennas with a controlled directional pattern. Smart antennas, which are also called intelligent antennas, are one of the varieties of phased antenna arrays. Smart antennas use a set of radiating ele
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Safaron, M. S., H. A. Majid, B. A. F. Esmail, et al. "Directional cloverleaf antenna for unmanned aerial vehicle (UAV) application." Indonesian Journal of Electrical Engineering and Computer Science 14, no. 2 (2019): 773. http://dx.doi.org/10.11591/ijeecs.v14.i2.pp773-779.

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3-blade and 4-blade cloverleaf antennas operating at 2.45 GHz have been proposed. In order to achieve directional radiation pattern and high gain, reflector is incorporated to the proposed antennas. The proposed antennas have an average gain of 2.37 dBi while the proposed antennas with reflector have an average gain of 6.38 dBi. The dimension of the proposed antenna is compact enough to be mounted on an unmanned aerial vehicle (UAV). Simulated and measured results are used to demonstrate the performance of the antenna. The simulated and measured return losses, together with the simulated radia
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Semenov, Andriy, Olena Semenova, Bogdan Pinaiev, Dmytro Kozin, and Oleksandr Shpylovyi. "Study of the radiation pattern of a rectangular horn antenna in the operation of multimode propagation of electromagnetic waves." Technology audit and production reserves 2, no. 2(64) (2022): 50–55. http://dx.doi.org/10.15587/2706-5448.2022.256560.

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The object of research in the work is the process of radiation of electromagnetic waves and the directional properties of a rectangular horn antenna in a multimode operation. The existing problem is that in practice when developing and researching horn antennas, only the single-mode mode of their operation is taken into account. The fundamental mode of the rectangular waveguide that feeds this horn antenna is chosen as the base mode of the emitted electromagnetic wave. Radiation of higher types of electromagnetic waves is not taken into account. To take into account the impact of higher types
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Jin, Hui, Chong-Zhi Han, Yanzhi Fu, and Huaiwen Yang. "A Low-Profile Dual-Band Directional Antenna for Unmanned Aerial Vehicle Applications." International Journal of Antennas and Propagation 2022 (October 17, 2022): 1–7. http://dx.doi.org/10.1155/2022/4765008.

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A low-profile dual-band directional antenna operating at both 2.4 and 5 GHz for wireless local area networks (WLANs) for unmanned aerial vehicles (UAVs) applications is proposed in the paper. Two pairs of dipole antenna arrays with different electrical lengths are utilized to achieve dual-band directional radiation performance, which is desirable for a remote-control unit of the UAVs. Note that the directional radiation characteristic is obtained according to the double-dipole antennas driven by antiphase signals (W8JK), provided the distances between different dipole antennas are properly opt
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Yao, Yuan, Wanzhong Chen, Xiaodong Chen, and Junsheng Yu. "Design of Optically Transparent Antenna with Directional Radiation Patterns." International Journal of Antennas and Propagation 2017 (2017): 1–7. http://dx.doi.org/10.1155/2017/8125432.

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An optically transparent antenna with directional radiation pattern is proposed in this paper. This antenna consists of a radiation patch above the transparent glass substrate and a frequency selective surface acting as the ground of microstrip antenna on the back of the glass. The frequency selective surface (FSS) performs well as ground in the working frequency range to achieve directional radiation pattern. A SMA connector is used to feed the antenna. The antenna can operate at the on-board dedicated short-range communication band from 5.725 GHz to 5.85 GHz. Simulations and measurements are
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Morshed, Khaled M., Debabrata K. Karmokar, and Karu P. Esselle. "Antennas for Licensed Shared Access in 5G Communications with LTE Mid- and High-Band Coverage." Sensors 23, no. 4 (2023): 2095. http://dx.doi.org/10.3390/s23042095.

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Two novel antennas are presented for mobile devices to enable them to access both licensed shared access (LSA) bands (1452–1492 and 2300–2400 MHz) and all the long-term evolution (LTE) mid (1427–2690 MHz) and high (3400–3800 MHz) bands, together with the GSM1800, GSM1900, UMTS, and 3.3 GHz WiMAX bands. These antennas do not require any passive or active lumped elements for input impedance matching. One of them is a dual-band antenna and the other is a wideband antenna. Both antennas have high efficiency in all the LSA bands, as well as the mid- and high-LTE bands, and nearly omnidirectional ra
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Dissertations / Theses on the topic "Directional patterns (antenna)"

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Bouhired, Dénia. "Antenna performance analysis combining full radiation patterns and directional channel characterisation." Thesis, University of Bristol, 2011. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.685418.

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The antenna constitutes the air interface between wireless equipment and communication channel, thus, efficient operation is of great importance especially in compact user devices. An understanding of its behaviour within any communication system, and an accurate representation of its effects on received signals are vital. The nature of the multipath propagation channel and the local environment, the user's interference with its orientation and immediate vicinity are all factors that impact on antenna performance and need to be addressed. This thesis addresses issues directly arising from the
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Duplouy, Johan. "Wideband Reconfigurable Vector Antenna for 3-D Direction Finding Application." Thesis, Toulouse, INPT, 2019. http://oatao.univ-toulouse.fr/24404/1/Duplouy_Johan.pdf.

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Direction finding plays a crucial role in various civilian and military applications, related to either radionavigation or radiolocation. Most of the direction finding antennas operate over a wide frequency band, but only a minority of them enable the direction of arrival estimation of an incoming electromagnetic field over a 3-D angular coverage (i.e., estimation of both azimuth and elevation angles). An original approach to obtain a 3-D angular coverage consists in measuring the six components of the incident electromagnetic field through a so-called vector antenna. The aim of this Ph.D. is
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Paaso, H. (Henna). "Direction of arrival estimation algorithms for leaky-wave antennas and antenna arrays." Doctoral thesis, Oulun yliopisto, 2018. http://urn.fi/urn:isbn:9789526220741.

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Abstract The focus of this thesis is to study direction of arrival (DoA) estimation algorithms for reconfigurable leaky-wave antennas and advanced antenna arrays. Directional antennas can greatly improve the spectrum reuse, interference avoidance, and object and people localization. DoA estimation algorithms have also been shown to be useful for applications such as positioning for user tracking and location-based services in wireless local area networks (WLANs). The main goal is to develop novel DoA estimation algorithms for both advanced antenna arrays and composite right/left-handed (CRLH)
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Young, Andre. "Improving the direction-dependent gain calibration of reflector antenna radio telescopes." Thesis, Stellenbosch : Stellenbosch University, 2013. http://hdl.handle.net/10019.1/80915.

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Thesis (PhD)--Stellenbosch University, 2013.<br>ENGLISH ABSTRACT: Utilising future radio interferometer arrays, such as the Square Kilometre Array (SKA), to their full potential will require calibrating for various direction- dependent effects, including the radiation pattern (or primary beam in the parlance of radio astronomers) of each of the antennas in such an array. This requires an accurate characterisation of the radiation patterns at the time of observation, as changing operating conditions may cause substantial variation in these patterns. Furthermore, fundamental imaging limits, a
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Sayyah, Jahromi Mohammad Reza Information Technology &amp Electrical Engineering Australian Defence Force Academy UNSW. "Efficient broadband antenna array processing using the discrete fourier form transform." Awarded by:University of New South Wales - Australian Defence Force Academy. School of Information Technology and Electrical Engineering, 2005. http://handle.unsw.edu.au/1959.4/38690.

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Processing of broadband signals induced on an antenna array using a tapped delay line filter and a set of steering delays has two problems. Firstly one needs to manipulate large matrices to estimate the filter coefficients. Secondly the use of steering delays is not only cumbersome but implementation errors cause loss of system performance. This thesis looks at both of these problems and presents elegant solutions by developing and studying a design method referred to as the DFT method, which does not require steering delays and is computationally less demanding compared to existing methods.
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Sron, Seng thail. "Algorithmes intelligents de pilotages d'antennes reconfigurables à partir de données en bande de base pour la norme LTE." Thesis, Limoges, 2015. http://www.theses.fr/2015LIMO0138.

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Le développement des antennes modales, qui sont des antennes actives reconfigurables en diagramme de rayonnement mais pas en réseaux, a commencé pour pouvoir implémenter le dépointage électronique dans les téléphones portables. Cette solution est généralement réalisée par un réseau d’antennes, ce qui est très difficile, voire impossible, dans un téléphone portable. Le dépointage permettrait d’améliorer le bilan de liaison et d’augmenter le débit des données.Le premier objectif de cette thèse est donc de développer des antennes modales pour la norme LTE. Trois concepts d’antennes modales ont ét
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Divín, Jan. "Měření směrových charakteristik antén." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2011. http://www.nusl.cz/ntk/nusl-218898.

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This Master’s Thesis is dealing with measuring antennas in far field. Especially with automation this measure, direction sensors made by optical mouse, Integrated Hall ICs for Linear and Off-Axis Rotary Motion Detection and remote unit this workplace, which can made communication with PC by USB. It describes the making control program for the PC.
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Sron, Seng Thail. "Algorithmes intelligents de pilotages d'antennes reconfigurables à partir de données en bande de base pour la norme LTE." Electronic Thesis or Diss., Limoges, 2015. http://www.theses.fr/2015LIMO0138.

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Le développement des antennes modales, qui sont des antennes actives reconfigurables en diagramme de rayonnement mais pas en réseaux, a commencé pour pouvoir implémenter le dépointage électronique dans les téléphones portables. Cette solution est généralement réalisée par un réseau d’antennes, ce qui est très difficile, voire impossible, dans un téléphone portable. Le dépointage permettrait d’améliorer le bilan de liaison et d’augmenter le débit des données.Le premier objectif de cette thèse est donc de développer des antennes modales pour la norme LTE. Trois concepts d’antennes modales ont ét
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Whelan, Jedidiah J. "Diverse Polarization Extension to MUSIC Applied to a Circular Array of H-Plane Horns." University of Dayton / OhioLINK, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=dayton1291326302.

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Lau, Buon Kiong. "Applications of Adaptive Antennas in Third-Generation Mobile Communications Systems." Thesis, Curtin University, 2002. http://hdl.handle.net/20.500.11937/2019.

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Adaptive antenna systems (AAS's) are traditionally of interest only in radar and sonar applications. However, since the onset of the explosive growth in demand for wireless communications during the 1990's, researchers are giving increasing attention to the use of AAS technology to overcome practical challenges in providing the service. The main benefit of the technology lies in its ability to exploit the spatial domain, on top of the temporal and frequency domains, to improve on transceiver performance. This thesis presents a unified study on two classes of preprocessing techniques for unifor
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Books on the topic "Directional patterns (antenna)"

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Center, Lewis Research, ed. Compensation of reflector surface distortions using conjugate field matching. National Aeronautics and Space Administration, Lewis Research Center, 1986.

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Kumar, Sunil, Fei Hu, and John D. Matyjas. Wireless Network Performance Enhancement Via Directional Antennas: Models, Protocols, and Systems. Taylor & Francis Group, 2015.

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Wireless Network Performance Enhancement Via Directional Antennas: Models, Protocols, and Systems. Taylor & Francis Group, 2015.

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Kumar, Sunil, Fei Hu, and John D. Matyjas. Wireless Network Performance Enhancement Via Directional Antennas: Models, Protocols, and Systems. Taylor & Francis Group, 2015.

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Kumar, Sunil, Fei Hu, and John D. Matyjas. Wireless Network Performance Enhancement Via Directional Antennas: Models Protocols and Systems. Taylor & Francis Group, 2020.

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Book chapters on the topic "Directional patterns (antenna)"

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León, Ruben, Alexis Tinoco, Santiago Andrade, Paul Machado, Manolo Paredes, and Fernando Lara. "Direction Finding with Angle Estimation in Antenna Array Using Radiation Pattern." In Innovation and Research - A Driving Force for Socio-Econo-Technological Development. Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-031-11438-0_3.

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Srivastava, Komal, Ajay Kumar Dwivedi, Nagesh Kallollu Narayanaswamy, and Anand Sharma. "Dual Band, Dual Port Dielectric Resonator Based MIMO Antenna with Bi-directional Pattern Diversity Using PRS." In Lecture Notes in Electrical Engineering. Springer Nature Singapore, 2022. http://dx.doi.org/10.1007/978-981-19-2631-0_10.

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"Antenna for ADS-B Signals." In Recent Advances in Satellite Aeronautical Communications Modeling. IGI Global, 2019. http://dx.doi.org/10.4018/978-1-5225-8214-4.ch005.

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This chapter deals with calculations of the microstrip antenna and the linear phased array that were based on the method of moments using Antenna Magus software. The analysis of the characteristics of these antennas at different emitter numbers and different types of the amplitude distribution was carried out. Calculations of electric field intensity and directional patterns for collinear antennas were provided. The method of moments in the framework of two program complexes was used. Comparison has shown high level of results coincidence. The sample of the antenna is described, which is used in operating system for reception of ADS-B signals from airborne transponders.
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Naik, Ketavath Kumar. "Design of Spiral Square Patch Antenna for Wireless Communications." In Contemporary Developments in High-Frequency Photonic Devices. IGI Global, 2019. http://dx.doi.org/10.4018/978-1-5225-8531-2.ch006.

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The kapton polyimide material is considered to design conformal antenna with spiral square for radio frequency identification (RFID) and wireless local area network (WLAN) applications. In this chapter, the analysis and investigation has been carried out with spiral square techniques using coplanar waveguide (CPW) feed. The proposed antenna operates at 5.8 GHz with impedance bandwidth of 170 MHz (5.73 - 5.9 GHz) with return loss -25.6 dB and gain is 2.4 dBi. The proposed antenna has considered with different bending angles for investigating the conformal characteristics due to flexibility of the material. These results are presented for omni-directional radiation patterns.
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Acharya, Puja, M. D. Rahmatullah, and Chidananda Murthy. "The Role of Structural Innovation in the Emergence of Modernity and the Relationship between Media and Modernity." In 9th National Conference & Exhibition on Emerging and Innovative Trends in Engineering Technology (NCEEITET). IARS' Press Australia, 2023. https://doi.org/10.62431/cqj80k54.

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Antenna reconfiguration has been a standard process for a significant amount of time. During the 1930s, calibrated variable phase changers were utilized to steer the nulls of a two-element array in order to obstruct the direction in which the signal was arriving. At the beginning, Bruce and Beck stretched the wires of the rhombic antenna using a motor and some weights to achieve the desired size change. The lengths of the rhombus elements and the internal angles were modified by modifying the distance between the antenna's primary axis, and the beam was guided by modifying the shape of the rhombic wire antenna. Research on antenna reconfiguration has been going on since World War Two. In the beginning, the only business that required reconfigurable antennas was the military industry. This was so they could determine the target's direction as well as other qualities. With today's modern communications systems, reconfigurable antennas are also utilized. 1G was originally used for phone calling, but today 5G is used for video conferencing. In addition to that, we still have a long way to go before we reach 6G. Yet, certain challenges are attracting the attention of scholars. The vast number of devices has led to an increase in the frequency of data packet collisions, which in turn has led to an increase in the energy requirements of the system. Having a high bandwidth might solve this problem. Yet, because of the limited frequency range, we are going to have to develop new technologies. Beamforming or pattern reconfigurable antennas are two types of antennas that can overcome this challenge by sending data in the direction that was intended. The most common and widely used method for beam switching is the use of beamforming antennas. On the other hand, it has a few drawbacks, such as restricted scanning angles, a high amount of side lobes, and variable gain in the main lobe. In this particular scenario, pattern reconfigurable antennas have the potential to play a significant part due to the fact that they enable switching of the antenna main beam in any of the 360 degrees of azimuth direction. If some other qualities, like as multibeam radiation, polarization, and the capacity to reconfigure beamwidth, are incorporated, it is possible that the single antenna will have further benefits. By doing so, the same antenna is able to conduct reconfigurability in a number of different attributes. On the azimuth plane, many user devices can be grouped together at the same time in a variety of different directions.
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You, Kok Yeow, Man Seng Sim, and Fandi Hamid. "Microwave and Millimeter-Wave Pyramidal Horn Arrays Design Using Analytical Techniques." In Handbook of Research on Emerging Designs and Applications for Microwave and Millimeter Wave Circuits. IGI Global, 2023. http://dx.doi.org/10.4018/978-1-6684-5955-3.ch006.

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This chapter describes the design and modeling of horn-based phased-array antennas using analytical approaches. Phased-array antennas are important devices for 5G wireless technologies since their radiation patterns can be reinforced in the desired direction and provide high directivity, which can be suppressed in the undesired direction. In this chapter, analytical analysis has been used for single horn element design. Various analytical formulations proposed by previous researchers were comprehensively reviewed. Once a single horn element has been designed, N number of horn elements were arranged in a 2D array to become a horn-based phased-array antenna. The universal antenna factor formula was used to model the phased-array antenna. The uncertainty of the antenna factor formula was studied since the formula has not mentioned which type of antenna element is suitable to be implemented. The calculated and simulated gain and radiation patterns for the horn-based phased-array antenna obtained from the analytical formula and commercial EM simulator were compared and analyzed.
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Dwivedi, Smrity. "Antenna Array for Reconfigurations." In Handbook of Research on Emerging Designs and Applications for Microwave and Millimeter Wave Circuits. IGI Global, 2023. http://dx.doi.org/10.4018/978-1-6684-5955-3.ch008.

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A reconfigurable antenna is an antenna having a capability to modify its properties dynamically in a controlled and reversible manner. The need for multi-functional (e.g., direction finding beam steering, radar, control, and command), high-performance, and cost-effective devices within a confined volume place a greater burden on today's transmitting and receiving systems. So, reconfiguring an antenna is achieved through deliberately changing its frequency, polarization, or radiation characteristics. Many techniques are to achieve this change by redistributing antenna currents and thus altering the electromagnetic fields of the antenna's effective aperture, thereby adapting to changes in system requirements (i.e., enhanced bandwidth, changes in operating frequency, polarization, and radiation pattern). This concept can significantly reduce the number of components, hardware complexity, and cost of the systems. The chapter represents advancement on multipurpose antennas having different applications in communication, broad banding, and detection.
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Przybylski Ribeiro Magri, Vanessa, Leni Joaquim de Matos, Pedro Vladimir Gonzalez Castellanos, Vítor Luiz Gomes Mota, and Rodrigo Amitrano Bilobran. "Automatized Measurement Setup to Determine 5G and 6G Radiation Pattern for Miniaturized Arrays Antennas." In Advanced Wireless Communications and Mobile Networks - Current Status and Future Directions [Working Title]. IntechOpen, 2025. https://doi.org/10.5772/intechopen.1009431.

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A swivel low-cost prototype is proposed for measuring the radiation pattern of millimeter wave antennas and antenna arrays applied to mobile services such as 5G and 6G and other wireless systems like RFID. Furthermore, the proposed measurement setup uses a pair of identical antennas to obtain the radiation pattern. The prototype uses a stepper motor controlled by Arduino Uno, an open-source software that allows a complete 360° rotation. The measurement setup utilizes a swivel model, where the transmitter antenna is connected to a signal generator, and the receiver antenna is connected to a signal analyzer, both controlled via a GPIB-USB interface. LabVIEW is employed to manage the equipment and measure the received power levels. Additionally, MATLAB, integrated into the same LabVIEW VI, plots the radiation pattern in rectangular and polar formats. A second calibration approach for verifying the radiation pattern diagram of a commercial directional antenna is also presented. The simulated and measured results are compared and validated in real-world environments and anechoic chamber.
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Kaviya K R and Deepa S. "Improved Linearly Constrained Minimum Variance Algorithm for 5G Communications System." In Advances in Parallel Computing. IOS Press, 2021. http://dx.doi.org/10.3233/apc210090.

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Beamforming is a process formulated to produce the radiated beam patterns of the antennas by completely building up the processed signals in the direction of the desired terminals and cancelling beams of interfering signals. Adaptive beamforming is a key technology of smart antenna. The core is to obtain optimum weights of the antenna array by some adaptive beamforming algorithms and finally adjust the main lobe to focus on the arriving direction of the desired signal as well as suppressing the interfering signal. There are several beamforming algorithms that includes Linearly Constrained Minimum Variance (LCMV) algorithm in which Self Nulling Issue is further reduced by adding multiplier to the MCMV algorithm and it is referred as Improved LCMV (IMPLCMV). A Comparative analysis is done for different multipliers and it is found that w=0.15 gives best result with minimum interference of flat response and also self-nulling issues can be reduced.
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Taillefer, Eddy, Jun Cheng, and Takashi Ohira. "Direction of Arrival Estimation with Compact Array Antennas." In Handbook on Advancements in Smart Antenna Technologies for Wireless Networks. IGI Global, 2009. http://dx.doi.org/10.4018/978-1-59904-988-5.ch010.

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This chapter presents direction of arrival (DoA) estimation with a compact array antenna using methods based on reactance switching. The compact array is the single-port electronically steerable parasitic array radiator (Espar) antenna. The antenna beam pattern is controlled though parasitic elements loaded with reactances. DoA estimation using an Espar antenna is proposed with the power pattern cross correlation (PPCC), reactance-domain (RD) multiple signal classification (MUSIC), and, RD estimation of signal parameters via rotational invariance techniques (ESPRIT) algorithms. The three methods exploit the reactance diversity provided by an Espar antenna to correlate different antenna output signals measured at different times and for different reactance values. The authors hope that this chapter allows the researchers to appreciate the issues that may be encountered in the implementation of direction-finding application with a single-port compact array like the Espar antenna.
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Conference papers on the topic "Directional patterns (antenna)"

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Lu, Shun, Guowen Ding, Xinyao Luo, and Shenyun Wang. "Reconfigurable Water-Based End-Fire Antenna with Directional Radiation Patterns." In 2024 IEEE MTT-S International Microwave Workshop Series on Advanced Materials and Processes for RF and THz Applications (IMWS-AMP). IEEE, 2024. https://doi.org/10.1109/imws-amp62793.2024.10966827.

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Zhou, Siyu, Dapeng Jiang, Shuangshuang Zhu, Ziheng Ding, and Jingfeng Chen. "Direction Finding With Single Phase Pattern Reconfigurable Antenna." In 2024 IEEE 12th Asia-Pacific Conference on Antennas and Propagation (APCAP). IEEE, 2024. https://doi.org/10.1109/apcap62011.2024.10882012.

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S.Sharygin, Gentian, and Alexander A. Mescheijakov. "Directional Patterns of UHF-Antennas Under Signal Reception Beyond the Horizon." In EMC_1994_Wroclaw. IEEE, 1994. https://doi.org/10.23919/emc.1994.10833379.

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Soklič, Jure, and Holger Arthaber. "On the Accuracy of Truncated Pattern Stitching with Directional Antennas." In 2024 IEEE 1st Latin American Conference on Antennas and Propagation (LACAP). IEEE, 2024. https://doi.org/10.1109/lacap63752.2024.10876301.

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Elsayem, Aisha, Mohamed Tamazin, Haidy Elghamrawy, Aboelmagd Noureldin, and Pierre-Marie Le Veel. "Analyzing Direction of Arrival Dynamics in GNSS Controlled-Reception Pattern Antennas Under Real Jamming Scenarios." In 37th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS+ 2024). Institute of Navigation, 2024. http://dx.doi.org/10.33012/2024.19701.

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Ermakov, V. Yu, and V. P. Lebedev. "STUDY OF E DIRECTIONAL PROPERTIES OF HF ANTENNAS BASED ON NEAR-FIELD MEASUREMENTS OBTAINED USING A UAV." In Baikal Young Scientists’ International School on Fundamental Physics. Institute of Solar-Terrestrial Physics SB RAS, 2024. http://dx.doi.org/10.62955/0135-3748-2024-259.

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Abstract:
To determine the absorption coefficient of electromagnetic waves, construct a frequency profile, determine the electron concentration, etc., and to study the Earth's atmosphere in general, radio engineering devices are used. The main element of such devices is an antenna system, the main characteristics (directional patterns of the main polarizations, gain, etc.) of which must be known as accurately as possible. Due to various factors, it is necessary to carry out in-kind measurements of the parameters of antenna systems. The paper presents the results of measuring the directional properties o
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Sharma, Babu Lal, and Dhirendra Mathur. "Ultra-wideband Frequency-Reconfigurable Circular Antenna with Directional Patterns." In 2022 IEEE World Conference on Applied Intelligence and Computing (AIC). IEEE, 2022. http://dx.doi.org/10.1109/aic55036.2022.9848953.

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Yun-Jui Lee, Kun-Chou Lee, Te-Liang Sun, and Chien-Jen Wang. "A broad open slot antenna with uni-directional radiation patterns." In 2011 IEEE Antennas and Propagation Society International Symposium and USNC/URSI National Radio Science Meeting. IEEE, 2011. http://dx.doi.org/10.1109/aps.2011.5996792.

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Wang, Yanfang, Fuguo Zhu, Steven Gao, and Hui Xu. "Investigation of dual-polarized ultra-wideband antenna with directional patterns." In 2016 IEEE International Conference on Ubiquitous Wireless Broadband (ICUWB). IEEE, 2016. http://dx.doi.org/10.1109/icuwb.2016.7790487.

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Qiu, Ning, RongLin Li, and Yuehui Cui. "Reconfigurable Antenna with Omni-/Bi-directional Patterns for Wireless Applications." In 2022 IEEE MTT-S International Microwave Workshop Series on Advanced Materials and Processes for RF and THz Applications (IMWS-AMP). IEEE, 2022. http://dx.doi.org/10.1109/imws-amp54652.2022.10106821.

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