Results 291 to 300 of about 32,533 (358)

A synthesis procedure for array feeds to improve radiation performance of large distorted reflector antennas

, 1990
W.T. Smith
openalex   +1 more source

Space-time spatial channel modulation with multiple constellations. [PDF]

Sci Rep
Zhu Y, Huang F, Zhou Z, Yang Z.
europepmc   +1 more source

Proton motive force partitioning links energy and redox balance to photoprotection and carbon gain. [PDF]

Front Plant Sci
Didaran F, MacPherson S, Cherestes A, Zohrabi S, Lefsrud M.   +4 more
europepmc   +1 more source

Millimeter-Wave Antennas for 5G Wireless Communications: Technologies, Challenges, and Future Trends. [PDF]

Sensors (Basel)
Yang Y, Mao M, Xu J, Liu H, Wang J, Song K.   +5 more
europepmc   +1 more source

The linear tapered slotline antenna as a holographic antenna feed

, 2003
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Terahertz Antennas and Feeds

2017
Terahertz antennas present a different set of challenges to the antenna designer typically striving for very high performance while at the very limit of the chosen fabrication process. Many of the same design techniques used at lower frequencies are still applied, but fabrication constraints impose significant limitations on the type of structure that ...
Chattopadhyay, G., Alonso-Delpino, M., Chahat, N., González-Ovejero, D., Lee, C., Reck, T.   +5 more
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Direct feed biconical antenna as a reference antenna

2011 IEEE International RF & Microwave Conference, 2011
Antenna factor is the main parameter in EMC measurement. Therefore, accurate and low uncertainty antenna is important in order to gain a reliable antenna factor. Direct feed biconical antenna has low uncertainty because balun can be eliminated in the design. Furthermore, the biconical antenna has fix phase center.
Syarfa Zahirah Sapuan, Alireza Kazemipour, Mohd Zarar Mohd Jenu   +2 more
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Additive manufacturing of antenna-feed chains

2017 IEEE MTT-S International Microwave Workshop Series on Advanced Materials and Processes for RF and THz Applications (IMWS-AMP), 2017
This paper reports on the additive manufacturing of waveguide components and subassemblies for antenna-feed chains operating in the Ku, K and Ka bands. The aim of the activity is the monolithic manufacturing of an entire dual-band antenna-feed chain working in K-Ka bands.
Peverini O. A., Addamo G., Lumia M., Virone G., Tascone R., Manfredi D., Calignano F.   +6 more
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Multifeed EBG dual band antenna to feed a reflector antenna

2011 41st European Microwave Conference, 2011
In this paper, we present the design of a multibeam reflector antenna fed by a multifeed dual band Electromagnetic Band Gap (EBG) antenna to achieve a high gain multispot coverage for space applications. First, we design a dual band EBG antenna in monofeed configuration.
Kanso, Ahmad, Chantalat, Régis, Thevenot, Marc, Naeem, Umair, Bila, Stéphane, Monédière, Thierry   +5 more
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