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Добірка наукової літератури з теми "Linear antennas"

Автор: Grafiati

Опубліковано: 30 травня 2022

Оновлено: 31 липня 2025

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Статті в журналах з теми "Linear antennas"

Ramya, M., V. Parthipan, and M. Yogadeepan. "Certain Investigations on Edge Fed Microstrip Patch Array Antenna for WiMAX Applications." Asian Journal of Electrical Sciences 4, no. 1 (2015): 1–7. http://dx.doi.org/10.51983/ajes-2015.4.1.1937.

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Recently, a new wireless technology, i.e., Worldwide interoperability for Microwave Access (WiMAX), has been demonstrated to have its strong potential to provide a very high speed of broadband services. By simultaneously using multiple antennas at transmitter and receiver sites, these systems exploit the spatial dimension of the propagation channel. The development of such antennas includes the design of array antenna, optimizing the array antenna parameters and thereby increasing its performance. This paper mainly focuses on design of single microstrip patch antennae and linear array configur

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S. ALZAHRANI, AHMED, and ADNAN M. AFFANDI. "High Gain Microstrip Active Antenna Utilizes as Transmitter and Receiver with Linear and Circular Polarization." Academic Journal of Research and Scientific Publishing 3, no. 30 (2021): 48–62. http://dx.doi.org/10.52132/ajrsp.e.2021.304.

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In this research paper, a high gain microstrip active antenna is operating as transmitter and receiver at the same time with linear and circular polarization operations. This proposed work contains five essential parts such as high gain and broadband applications. Firstly, mainly is dealing with passive patch antennas. These selected passive antennas enjoy both high gain and broadband applications. Part two intends to convert the selected passive patch antennas into an active antenna. Part three intended to improve the performances of the proposed active integrated antennas. Part four enhancem

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Surutka, Jovan, and Dragutin Velickovic. "Symmetrical linear antennas driven by two-wire lines." Serbian Journal of Electrical Engineering 1, no. 1 (2003): 27–60. http://dx.doi.org/10.2298/sjee0301027s.

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A new theoretical approach to the problem of the symmetrical linear antenna driven by a two-wire line is presented. Then symmetrical linear antenna and the feeder line are treated as a unique boundary-value problem leading to a system of two simultaneous integral equations containing antenna and line currents as unknown sub-integral functions. The integral equations are approximately solved by the so-called point-matching method. Due to the mutual coupling between the antenna and the line, a new conveniently defined apparent driving-point admittance is to be introduced. The method is applied o

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van Aardt, Ruan, Johan Joubert, and Johann W. Odendaal. "A Dipole with Reflector-Backed Active Metasurface for Linear-to-Circular Polarization Reconfigurability." Materials 15, no. 9 (2022): 3026. http://dx.doi.org/10.3390/ma15093026.

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In recent years, significant advances have been made in diversifying the capabilities of communication systems by using reconfigurable antennas. There are many types of reconfigurable antennas—to achieve pattern, frequency, or polarization reconfigurability. These antennas are reconfigured either by the mechanical rotation of surfaces or by enabling or disabling specific sections of the structure using electrical switches. This paper focuses on the concept of a polarization reconfigurable antenna based on an active reflector-backed metasurface. An antenna system based on an active reflector-ba

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Venouil, Anton, Matthieu Egels, Philippe Pannier, Mohammed Benwadih, Christophe Serbutoviez, and Chaouki Hannachi. "Performance Analysis of a Screen-Printing Process for Cost-Effective Flexible Bow-Tie Antennas." J 8, no. 2 (2025): 20. https://doi.org/10.3390/j8020020.

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This paper presents a comparative analysis of performance for several antenna prototypes using a screen-printing process. This analysis was performed using various bow-tie antenna configurations, including single-band and multi-band antennas with linear or circular polarization over multiple operating frequency ranges. For antenna implementations, three different conductive inks and two resolutions of screen masks were tested. The performance of the fabricated prototypes has then been compared to the copper laser-etched antennas. This study revealed that with the proper selection of ink thinne

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Mustafa, H. Abu Nasr. "Z-SHAPED DIPOLE ANTENNA AND ITS FRACTAL ITERATIONS." International Journal of Network Security & Its Applications (IJNSA) 5, no. 5 (2013): 139–51. https://doi.org/10.5281/zenodo.5520190.

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Z-shaped dipole and fractal Z-shaped dipole antennas made of wires are introduced. Theses antennas exhibit lower resonant frequencies and small space occupations. The performance characteristics of the proposed antennas are examined and compared with successive iterations for the same wire length. The radiation properties are considered including input impedance and VSWR as functions of frequency. Also the comparison between the third iteration of fractal Z-shaped dipole antenna and linear dipole antenna with the same wire length are presented.

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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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Tsay, Tain-Sou. "Small Loop Antenna System Design for Radio Direction Finding." WSEAS TRANSACTIONS ON COMMUNICATIONS 20 (December 16, 2021): 172–76. http://dx.doi.org/10.37394/23204.2021.20.22.

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In this literature, a low-cost small loop antenna is developed for radio direction finding. It consists of two coupled rectangular counter-wiring loop antennas. A signal-processing circuit is developed also for demodulated outputs. A single rectangular loop antenna is discussed first for illustrating the receiving characteristics and then the proposed two coupled rectangular counter-wiring loop antennas are designed for radio direction finding. Measurements give a large linear detecting range. It is ready for Omni-directional application using another two coupled loop antennas and can be used

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Lampe, Bernhard, and Klaus Holliger. "Resistively loaded antennas for ground-penetrating radar: A modeling approach." GEOPHYSICS 70, no. 3 (2005): K23—K32. http://dx.doi.org/10.1190/1.1926574.

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The design of surface ground-penetrating radar (GPR) antennas is inherently difficult, primarily because the presence of the air-soil interface greatly complicates both analytic and laboratory-based approaches aimed at characterizing the antennas. Versatile numerical simulation techniques capable of describing the key physical principles governing GPR antenna radiation offer new solutions to this problem. We use a finite-difference time-domain (FDTD) solution of Maxwell's equations in three dimensions to explore the radiation characteristics of various bow-tie antennas (including quasi-linear

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Kuz'kin, Venedikt M., Sergey A. Pereselkov, Yuri V. Matvienko, Vladimir I. Grachev, Sergey A. Tkachenko, and Nadezhda P. Stadnaya. "Holographic processing of hydroacoustic information using linear antennas." Radioelectronics. Nanosystems. Information Technologies. 15, no. 2 (2023): 169–78. http://dx.doi.org/10.17725/rensit.2023.15.169.

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The formation of an interferogram and a hologram of a moving underwater noise source using linear antennas is considered. The relationship between the spectral density of the hologram and the aperture and the angular dependence of the received field is derived. Antenna gain has been estimated. The issue of the limiting signal-to-noise ratio at which the holographic processing remains operational is discussed. An analytical expression is obtained that establishes a relationship between the signal/noise ratios at the output and input of the antenna. Conditions are formulated under which the inte

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Дисертації з теми "Linear antennas"

Aqbi, Sadiq. "Improving the Performance of Dual Linear Polarization Antennas with Metamaterial Structures." Doctoral thesis, Universitätsbibliothek Chemnitz, 2018. http://nbn-resolving.de/urn:nbn:de:bsz:ch1-qucosa-233539.

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In this dissertation, the operation of dual-linear polarized antennas is considered in order to provide ideal performance suited for several applications including polarimetric synthetic aperture radar (SAR), wireless and satellite communications. The underlying objectives realized in this work are reported as design realizations of dual-linear polarized antennas with low cross polarization patterns and high isolation between ports that employ special properties of the electromagnetic metamaterial (MTM) structures. Some of these key properties appear as negative permittivity, negative permeabi

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Ramadan, Ashraf. "Active antennas with high input impedance low noise and highly linear amplifiers." [S.l. : s.n.], 2005. http://deposit.ddb.de/cgi-bin/dokserv?idn=975739174.

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Williams, Ian E. "Multipath Mitigation for Aeronautical Telemetry with Multiple Antennas." International Foundation for Telemetering, 2009. http://hdl.handle.net/10150/606143.

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ITC/USA 2009 Conference Proceedings / The Forty-Fifth Annual International Telemetering Conference and Technical Exhibition / October 26-29, 2009 / Riviera Hotel & Convention Center, Las Vegas, Nevada<br>Frequency selective multipath is a key performance limiter for aeronautical telemetry applications. Our research explores multipath mitigation techniques with ARTM Tier-1 waveforms using linear adaptive filters, multiple receive antennas and error-based best source selection. Single antenna adaptive equalization alone is unable to substantially improve performance under certain channel conditi

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Allayioti, Marion. "Beam reconfigurable microstrip antennas based on parasitics with linear and circular polarisation capability." Thesis, University of Surrey, 2018. http://epubs.surrey.ac.uk/847002/.

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Millimetre wave beam and polarization reconfigurable antennas for future wireless communications are investigated in this thesis. The millimetre wave frequency spectrum has recently attracted large attention from researchers and the industry of wireless communications. Millimetre wave frequencies is considered to be the frequency spectrum between 30 GHz and 300 GHz. However, the industry considers the spectrum above 10 GHz as millimetre wave, due to the fact that it shows similar propagation characteristics with the spectrum above 30 GHz. The aforementioned spectrum of frequencies offers a lot

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Cuiñas, Gómez Íñigo, Luis Landesa, and Pino Marcos Rodríguez. "Using wavelets in applied electromagnetics : an algorithm for efficient pattern synthesis of linear aperture antennas." Pontificia Universidad Católica del Perú, 2014. http://repositorio.pucp.edu.pe/index/handle/123456789/97009.

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Pattern synthesis of linear aperture antennas is a classical problem in Applied Electromagnetics with a great number of resolving methods. In this paper, a new algorithm that uses wavelets to compute the solution is presented. The new method reaches a good approximation of the aperture field from the antenna radiation pattern, using the Haar wavelet basis. Results prove the performance of the proposed method.

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Weldon, Jonathan Andrew. "A DIRECTION FINDING SYSTEM USING LOG PERIODIC DIPOLE ANTENNAS IN A SPARSELY SAMPLED LINEAR ARRAY." Wright State University / OhioLINK, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=wright1278470572.

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Chinatto, Júnior Adilson Walter. "Processamento largamente linear em arranjo de antenas = proposta, avaliação e implementação prática de algoritmos." [s.n.], 2011. http://repositorio.unicamp.br/jspui/handle/REPOSIP/259282.

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Orientadores: João Marcos Travassos Romano, Cynthia Cristina Martins Junqueira<br>Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia Elétrica e de Computação<br>Made available in DSpace on 2018-08-17T17:05:38Z (GMT). No. of bitstreams: 1 ChinattoJunior_AdilsonWalter_M.pdf: 7887281 bytes, checksum: 23d4e34e4a2b77a46e1707773d7b5fdf (MD5) Previous issue date: 2011<br>Resumo: O Processamento Largamente Linear, desenvolvido durante a década de 1990, tem levado a uma melhoria no desempenho de algoritmos adaptativos para determinadas situações que empregam sinais im

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Erdogan, Yakup. "Parametric Study And Design Of Vivaldi Antennas And Arrays." Master's thesis, METU, 2009. http://etd.lib.metu.edu.tr/upload/12610492/index.pdf.

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In this thesis, parametric study and design of Vivaldi antennas and arrays are studied. The parameters of single element antennas and arrays are investigated regarding their effects on the design. The return loss responses and radiation patterns are considered in the parametric study. The results of simulations realized using Ansoft HFSS, a high frequency electromagnetic field simulation program, are shown and discussed. Two different Vivaldi antennas operating in 8.5-10.5 GHz frequency band with return loss responses better than 15 dB are designed based on the results of parametric study. St

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Al, Khambashi Majid S. "Analysis and solutions for RFID tag and RFID reader deployment in wireless communications applications. Simulation and measurement of linear and circular polarised RFID tag and reader antennas and analysing the tags radiation efficiency when operated close to the human body." Thesis, University of Bradford, 2012. http://hdl.handle.net/10454/6340.

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The aim of this study is to analysis, investigate and find out the solutions for the problems associated with the implementations of antennas RFID Reader and Tag for various applications. In particular, the efficiency of the RFID reader antenna and the detection range of the RFID tag antenna, subject to a small and compact antenna¿s design configuration have been studied. The present work has been addressed directly to reduce the cost, size and increase the detection range and communication reliability of the RFID framework antennas. Furthermore, the modelling concept of RFID passive ta

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Sumanam, Satya Parthiva Sri. "A Conductor Backed, Coplanar Waveguide Fed, Linear Array Comprised of Bowtie Antennas for a Varactor Tuned Radiation Pattern." University of Dayton / OhioLINK, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=dayton1470346770.

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Книги з теми "Linear antennas"

FitzGerrell, R. G. Linear gain--standard antennas below 1000 MHz. U.S. Dept. of Commerce, National Bureau of Standards, 1986.

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FitzGerrell, R. G. Linear gain--standard antennas below 1000 MHz. U.S. Dept. of Commerce, National Bureau of Standards, 1986.

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FitzGerrell, R. G. Linear gain--standard antennas below 1000 MHz. U.S. Dept. of Commerce, National Bureau of Standards, 1986.

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FitzGerrell, R. G. Linear gain--standard antennas below 1000 MHz. U.S. Dept. of Commerce, National Bureau of Standards, 1986.

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FitzGerrell, R. G. Linear gain--standard antennas below 1000 MHz. U.S. Dept. of Commerce, National Bureau of Standards, 1986.

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FitzGerrell, R. G. Linear gain--standard antennas below 1000 MHz. U.S. Dept. of Commerce, National Bureau of Standards, 1986.

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FitzGerrell, R. G. Linear gain--standard antennas below 1000 MHz. U.S. Dept. of Commerce, National Bureau of Standards, 1986.

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Center, Langley Research, ed. A novel method of calculating far-field patterns of large aperture antennas. National Aeronautics and Space Administration, Langley Research Center, 1986.

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Hamer, Harold A. Effects of model errors on control of large flexible space antenna with comparisons of decoupled and linear quadratic regulator control procedures. Langley Research Center, 1986.

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Simons, Rainee N. Novel on-wafer radiation pattern measurement technique for MEMS actuator based reconfigurable patch antennas. National Aeronautics and Space Administration, Glenn Research Center, 2003.

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Частини книг з теми "Linear antennas"

Smith, Martin S. "Linear Arrays." In Introduction to Antennas. Macmillan Education UK, 1988. http://dx.doi.org/10.1007/978-1-349-19384-4_4.

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Hirasawa, Kazuhiro. "Linear Wire Antennas." In Handbook of Antenna Technologies. Springer Singapore, 2016. http://dx.doi.org/10.1007/978-981-4560-44-3_25.

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Hirasawa, Kazuhiro. "Linear Wire Antennas." In Handbook of Antenna Technologies. Springer Singapore, 2015. http://dx.doi.org/10.1007/978-981-4560-75-7_25-1.

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Beffa, Federico. "Linear Time-Varying Systems." In Weakly Nonlinear Systems. Springer Nature Switzerland, 2023. http://dx.doi.org/10.1007/978-3-031-40681-2_12.

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AbstractIn this chapter we consider linear time-varying (LTV) systems. These are systems whose behaviour depends on the particular moment in time at which they are used. The change with time may arise for example due to the sensitivity of system components to environmental changes. Examples of systems suffering from this type of sensitivity include wireless communication systems in which the communication channel between the transmitter- and the receiver-antennas is highly dependent on the environment in between and around the antennas.

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Burggraf, H., and D. Rathjen. "Beamforming on Linear Antennas with Optical Processors." In Underwater Acoustic Data Processing. Springer Netherlands, 1989. http://dx.doi.org/10.1007/978-94-009-2289-1_34.

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Herath, H. M. C. J., H. M. G. G. J. G. Herath, K. M. U. I. Ranaweera, D. N. Uduwawala, and P. R. P. Hoole. "5/6G, Smart Antennas and Coding the Algorithms: Linear ANN, Non-linear ANN, and LMS." In Smart Antennas and Electromagnetic Signal Processing in Advanced Wireless Technology. River Publishers, 2022. http://dx.doi.org/10.1201/9781003339564-12.

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Allen, J. P., R. Theiler, and G. Feher. "Crystallization and Linear Dichroism Measurements of the B800-850 Antenna Pigment-Protein Complex from Rhodopseudomonas sphaeroides 2.4.1." In Antennas and Reaction Centers of Photosynthetic Bacteria. Springer Berlin Heidelberg, 1985. http://dx.doi.org/10.1007/978-3-642-82688-7_13.

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Mäntele, W., K. Steck, T. Wacker, W. Welte, B. Levoir, and J. Breton. "Linear Dichroism (LD) and Absorption Spectra of Crystals of B800–850 Light-Harvesting Complexes of Rhodopseudomonas capsulata." In Antennas and Reaction Centers of Photosynthetic Bacteria. Springer Berlin Heidelberg, 1985. http://dx.doi.org/10.1007/978-3-642-82688-7_15.

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Breton, J. "Orientation of the Chromophores in the Reaction Center of Rhodopseudomonas viridis. Comparison of Low-Temperature Linear Dichroism Spectra with a Model Derived from X-Ray Crystallography." In Antennas and Reaction Centers of Photosynthetic Bacteria. Springer Berlin Heidelberg, 1985. http://dx.doi.org/10.1007/978-3-642-82688-7_19.

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Gawronski, Wodek. "Sequential Design of a Linear Quadratic Controller for the Deep Space Network Antennas." In Mechanics and Control. Springer US, 1994. http://dx.doi.org/10.1007/978-1-4615-2425-0_15.

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Тези доповідей конференцій з теми "Linear antennas"

Vellucci, S., M. Longhi, A. Monti, M. Barbuto, A. Toscano, and F. Bilotti. "Reconfigurable Linear Antennas Through Metasurface Coatings." In 2023 URSI International Symposium on Electromagnetic Theory (EMTS). IEEE, 2023. https://doi.org/10.1109/emts57498.2023.10925233.

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Shukoor, Mohammad Abdul, Karun Rawat, and Sukomal Dey. "Multiple Wideband Reflective Polarizer With Simultaneous Linear-Circular and Linear-Linear Conversion Ability for X to Ka-band Applications." In 2024 IEEE Microwaves, Antennas, and Propagation Conference (MAPCON). IEEE, 2024. https://doi.org/10.1109/mapcon61407.2024.10922989.

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H-Zarghani, Zahra, Alessio Monti, Stefano Vellucci, et al. "Towards Active Mantle Cloaks for Linear Antennas." In 2024 IEEE International Symposium on Antennas and Propagation and INC/USNC‐URSI Radio Science Meeting (AP-S/INC-USNC-URSI). IEEE, 2024. http://dx.doi.org/10.1109/ap-s/inc-usnc-ursi52054.2024.10686701.

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Nkimbeng, Cho Hilary Scott, Heesu Wang, and Ikmo Park. "Dual-Wideband Transmissive Linear-to-Circular Polarization Converter." In 2024 International Symposium on Antennas and Propagation (ISAP). IEEE, 2024. https://doi.org/10.1109/isap62502.2024.10846449.

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Martín, R. Gómez, J. A. Morente, and A. Salinas. "Monopulse Technique for an Array of Linear Wire Antennas." In EMC_1986_Wroclaw. IEEE, 1986. https://doi.org/10.23919/emc.1986.10828459.

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Liu, Xiaocha, Xiaoyi Wang, Kai Tan, Lirong Zheng, and Guo-min Yang. "A Linear Polarized Huygens Metasurface for Millimeter Wave Antennas." In 2024 IEEE 10th International Symposium on Microwave, Antenna, Propagation and EMC Technologies for Wireless Communications (MAPE). IEEE, 2024. https://doi.org/10.1109/mape62875.2024.10813878.

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Sharma, Abhinav, Anoop Raghuvanshi, and Abhishek Kumar Awasthi. "Pattern Synthesis of Linear Antenna Array using Honey Badger Algorithm." In 2024 IEEE Microwaves, Antennas, and Propagation Conference (MAPCON). IEEE, 2024. https://doi.org/10.1109/mapcon61407.2024.10922859.

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Daliri, Ali, Sabu John, Amir Galehdar, Wayne S. T. Rowe, and Kamran Ghorbani. "Strain Measurement in Composite Materials Using Microstrip Patch Antennas." In ASME 2010 Conference on Smart Materials, Adaptive Structures and Intelligent Systems. ASMEDC, 2010. http://dx.doi.org/10.1115/smasis2010-3703.

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In this paper the feasibility of using a circular microstrip patch antenna to detect strain in composite plates and the effects of different materials on sensitivity of the patch antenna are investigated. Also the effect of strain direction on the frequency shift is studied. The theoretical model shows a linear relationship between strain and the shift in the resonant frequency of the antenna in any material. A circular microstrip patch antenna is designed and fabricated to work at 1.5GHz and attached to three different materials for testing. Both Finite Element Analysis (FEA) and experimental

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Monticone, Francesco, Nasim Mohammadi Estakhri, and Andrea Alu. "Linear and nonlinear optical nano-antennas." In 2015 USNC-URSI Radio Science Meeting (Joint with AP-S Symposium). IEEE, 2015. http://dx.doi.org/10.1109/usnc-ursi.2015.7303629.

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Gutman, A. L. "Antennas Film as Active Linear System." In 2006 IEEE Antennas and Propagation Society International Symposium. IEEE, 2006. http://dx.doi.org/10.1109/aps.2006.1711439.

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Звіти організацій з теми "Linear antennas"

Arcone, Steven, James Lever, Laura Ray, Benjamin Walker, Gordon Hamilton, and Lynn Kaluzienski. Ground-penetrating radar profiles of the McMurdo shear zone, Antarctica, acquired with an unmanned rover : interpretation of crevasses, fractures, and folds within firn and marine ice. Engineer Research and Development Center (U.S.), 2021. http://dx.doi.org/10.21079/11681/42620.

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The crevassed firn of the McMurdo shear zone (SZ) within the Ross Ice Shelf may also contain crevasses deep within its meteoric and marine ice, but the surface crevassing prevents ordinary vehicle access to investigate its structure geophysically. We used a lightweight robotic vehicle to tow 200- and 40 MHz ground-penetrating radar antennas simultaneously along 10 parallel transects over a 28 km² grid spanning the SZ width. Transects were generally orthogonal to the ice flow. Total firn and meteoric ice thickness was approximately 160 m. Firn crevasses profiled at 400 MHz were up to 16 m wide,

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Gearhart, Steven. Monolithic Three-Dimensional Micromachined Transmission Lines and Antennas. Defense Technical Information Center, 2001. http://dx.doi.org/10.21236/ada398489.

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Johnson, William Arthur, Larry Kevin Warne, Roy Eberhardt Jorgenson, and Kelvin S. H. Lee. An improved statistical model for linear antenna input impedance in an electrically large cavity. Office of Scientific and Technical Information (OSTI), 2005. http://dx.doi.org/10.2172/922749.

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Balanis, Constantine A., Anastasis C. Polycarpou, Seong-Ook Park, James P. Gilb, and Michael R. Lyons. Frequency and Transient Characteristics of MMIC Transmission Lines, Circuits and Antennas. Defense Technical Information Center, 1997. http://dx.doi.org/10.21236/ada325074.

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Forman, Michael A. Meandered-line antenna with integrated high-impedance surface. Office of Scientific and Technical Information (OSTI), 2010. http://dx.doi.org/10.2172/1008127.

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Callahan, Michael J. The Design, Fabrication and Test of Feeds, Radiating Elements and Linear Subarrays for a Small Prototype Planar Array Antenna. Defense Technical Information Center, 2000. http://dx.doi.org/10.21236/ada384599.

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Goldman, Geoffrey. Low-cost Electronically Scanning Antenna with Randomly Selected Delay Line Lengths. Defense Technical Information Center, 2010. http://dx.doi.org/10.21236/ada522643.

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DiJoseph, Patricia, Brian Tetreault, and Marin Kress. AIS data case Study : identifying AIS coverage gaps on the Ohio River in CY2018. Engineer Research and Development Center (U.S.), 2021. http://dx.doi.org/10.21079/11681/40886.

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This Coastal and Hydraulics Engineering Technical Note (CHETN) describes a method for evaluating the received coverage from Automatic Identification System (AIS) shore sites and the availability of historic vessel position reports along the Ohio River. The network of AIS shoreside sites installed and operated by the US Army Corps of Engineers (USACE) and the US Coast Guard (USCG) receive information transmitted from vessels; however, reception of these transmissions is generally line-of-sight between the vessel and the AIS site antenna. Reception may also be affected by factors such as the qua

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Mitchell, Corey, Linda Allison, Corey Mitchell, and Linda Allison. Desert tortoise inventory at Lake Mead National Recreation Area: 2022 line distance sampling surveys. National Park Service, 2024. http://dx.doi.org/10.36967/2304840.

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The Mojave desert tortoise (Gopherus agassizii) inhabits the Mojave and Colorado Deserts in the southwestern United States. The Lake Mead National Recreation Area (NRA) spans the Colorado River corridor in Arizona and Nevada and sits at an ecologically important intersection of the listed and unlisted Mojave tortoise populations. A large portion of the Lake Mead NRA contains suitable desert tortoise habitat, but no contemporary estimates of population densities exist for different areas of the recreation area. Three of the long-term range-wide monitoring strata overlap the Lake Mead NRA: Eldor

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Tetreault, Brian, Marin Kress, and Patricia DiJoseph. AIS data case study : evaluating reception of AIS position reports on the Missouri River by LOMA AIS sites in April and August 2020. Engineer Research and Development Center (U.S.), 2022. http://dx.doi.org/10.21079/11681/42980.

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This Coastal and Hydraulics Engineering Technical Note (CHETN) describes a method for evaluating the received coverage from Automatic Identification System (AIS) shoreside sites along the Missouri River managed by the US Army Corps of Engineers (USACE) Lock Operations Management Application (LOMA), and presents the results of that analysis. The purpose is to identify AIS coverage gaps in the current system. Reception of AIS transmissions between shore-based transceivers and vessels is generally line-of-sight between the vessel and the AIS site antenna. However, signal reception may be affected

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