Results 141 to 150 of about 88,827 (197)
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Ultrahigh-frequency loop antennas
Electrical Engineering, 1940ANTENNAS which are discussed in this paper were developed for two applications: (1) to serve as elements in radiating systems of localizers and radio ranges used to guide aircraft; (2) to act as receiving antennas carried by aircraft.
Andrew Alford, A. G. Kandoian
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IEEE Transactions on Antennas and Propagation, 2003
A new quadrifilar antenna has been developed for generating circularly polarized backfire radiation. The antenna consists of two orthogonal rectangular conducting loops, each incorporating capacitive coupling and fed using either a single or two coaxial cables.
Fusco, Vincent, Cahill, Robert, Li, R.L.
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A new quadrifilar antenna has been developed for generating circularly polarized backfire radiation. The antenna consists of two orthogonal rectangular conducting loops, each incorporating capacitive coupling and fed using either a single or two coaxial cables.
Fusco, Vincent, Cahill, Robert, Li, R.L.
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2021 Systems of Signals Generating and Processing in the Field of on Board Communications, 2021
A new type of antenna system has been proposed - a configurable loop antenna with laser control. It is shown that the addition of semiconductor elements of the photoresistor type to the elements of the outer contour of the loop antenna makes it possible to significantly expand the functionality of the loop antenna and control the antenna ...
S. Yu. Kazantsev +3 more
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A new type of antenna system has been proposed - a configurable loop antenna with laser control. It is shown that the addition of semiconductor elements of the photoresistor type to the elements of the outer contour of the loop antenna makes it possible to significantly expand the functionality of the loop antenna and control the antenna ...
S. Yu. Kazantsev +3 more
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Loop antennas for underwater communications
12th European Conference on Antennas and Propagation (EuCAP 2018), 2018In this paper, the performances of circular loop antennas for underwater communication, designed to work both in freshwater and seawater, are analyzed. Firstly, the attenuation and wavelength in both environments are evaluated with the goal of selecting the proper working frequencies, that are supposed to be 433.92 MHz in freshwater and 10 kHz in ...
Andrea Massaccesi, Paola Pirinoli
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Meandered monopole coupled loop antenna
2012 6th European Conference on Antennas and Propagation (EUCAP), 2012A printed open-circuit monopole coupled loop antenna (MCLA) operating around 425 MHz is proposed in this communication. This antenna is an evolution of the MCLA, where meander lines have been added. It achieves to a very compact antenna operating in UHF. The theoretical and measurement results are presented.
Taachouche, Yakkoub +2 more
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Unidirectional printed loop antenna
6th International SYmposium on Antennas, Propagation and EM Theory, 2003. Proceedings. 2003, 2003A new type of printed rectangular loop antenna with capacitive loads is proposed for unidirectional radiation pattern production. The arrangement presented here is shown to have a current distribution with balanced magnitude and 90/spl deg/ phase difference on parallel radiating edges of the loop. As a result, the printed loop is equivalent to an array
R.L. Li +5 more
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Applied Physics, 1976
A rather simple and general analysis allows calculation of the transient response of many different radiators of practical interest directly in the time domain without the knowledge of the corresponding time harmonic field. Here, we present exact expressions for the transient near-and far-fields around thin circular current loops of arbitrary ...
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A rather simple and general analysis allows calculation of the transient response of many different radiators of practical interest directly in the time domain without the knowledge of the corresponding time harmonic field. Here, we present exact expressions for the transient near-and far-fields around thin circular current loops of arbitrary ...
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2008 International Conference on Recent Advances in Microwave Theory and Applications, 2008
In this paper, an inward scaled loop antenna (ISLA) is presented. It is created by successive scaling and rotating and fitting the scaled copies of a wideband loop antenna (WBLA) in the empty space available in it. The overall size of the antenna remains the same as that of the WBLA.
Ravi Kumar Joshi, A. R. Harish
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In this paper, an inward scaled loop antenna (ISLA) is presented. It is created by successive scaling and rotating and fitting the scaled copies of a wideband loop antenna (WBLA) in the empty space available in it. The overall size of the antenna remains the same as that of the WBLA.
Ravi Kumar Joshi, A. R. Harish
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Periodic spherical loop antenna
2015 IEEE 16th Annual Wireless and Microwave Technology Conference (WAMICON), 2015In this paper a volumetric approach to miniaturizing a 300 MHz loop antenna is presented. Leveraging the benefits of additive manufacturing allows for the antenna to be meandered in a spherical pattern resulting in higher levels of miniaturization while maintaining efficiency.
Jonathan M. O'Brien +2 more
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