Topic
Reflective array antenna
About: Reflective array antenna is a research topic. Over the lifetime, 4366 publications have been published within this topic receiving 57884 citations.
Papers published on a yearly basis
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08 Jul 2012TL;DR: In this article, a metasurface which is considered as a polarizer for microwave antennas is proposed and preliminary results have shown that circularly polarized (CP) radiation can be obtained from linearly polarized (LP) source antennas with the use of metasuran surface, antenna performance such as realized gain, efficiency and bandwidth are improved simultaneously.
Abstract: A metasurface which is considered as a polarizer for microwave antennas is proposed in this paper. Preliminary results have shown that circularly polarized (CP) radiation can be obtained from linearly polarized (LP) source antennas with the use of metasurface, antenna performance such as realized gain, efficiency and bandwidth are improved simultaneously. The metasurfaced antennas have a succinct non-resonant cavity in sub-wavelength (1/13 λ 0 ) format.
45 citations
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45 citations
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TL;DR: In this article, the reduction of the focal distance of transmit-array antennas using multiple feeds was investigated theoretically and through full-wave simulations, and the theoretical results were validated through fullwave simulations for two transmit arrays operating in the 60 GHz band.
Abstract: The reduction of the focal distance of transmit-array antennas using multiple feeds is investigated theoretically and through full-wave simulations. A theoretical model of multiple-feed transmit arrays is derived using analytic formulas; it shows that the focal distance can be divided by a factor of two using a quadruple-feed configuration. The theoretical results are validated through full-wave simulations for two transmit arrays operating in the 60-GHz band.
44 citations
01 Feb 1963
TL;DR: In this article, the least-mean-square comparison of directivity patterns of line sources having different illumination distributions is considered, and a comparison of the directivity pattern of two line sources with different illumination distribution is made.
Abstract: This Memorandum considers least-mean-square comparison of directivity patterns of line sources having different illumination distributions.
44 citations
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TL;DR: Non-Foster reactive elements are embedded inside compact resonant antennas, rather than being employed in matching networks located at the antenna terminals, resulting in a broadband antenna with a high radiation resistance.
Abstract: Non-Foster reactive elements are embedded inside compact resonant antennas, rather than being employed in matching networks located at the antenna terminals. These embedded non-Foster elements interact with the inherent Foster reactances of the antenna, resulting in a broadband antenna with a high radiation resistance. The class of suitable antennas for this application is discussed, a design procedure is presented and a sensitivity and a stability analysis are performed. Finally, experimental results for a representative non-Foster antenna are presented and discussed.
44 citations