Results 211 to 220 of about 1,302,382 (255)
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Underwater radio frequency antenna

2015
The present invention relates to an underwater radio frequency antenna able to radiate in an underwater or equivalent propagation medium. It comprises -a hollow conducting tube (1) forming a resonant cavity, said conducting tube having an open end and a closed end,-means of excitation (2) of said resonant cavity which are able to be fed with signals ...
Le Pennec, François   +6 more
openaire   +1 more source

Antennas in Radio Telescope Systems

2015
Radio astronomy is the study of the universe by measurement of radio frequency emission at frequencies ranging from a few MHz to the far infrared. Signals of interest are typically extraordinarily weak, necessitating large effective aperture and resulting in some of the world’s largest antenna systems.
openaire   +1 more source

A Survey on Planar Antenna Designs for Cognitive Radio Applications

Wireless personal communications, 2017
Anveshkumar Nella, A. Gandhi
semanticscholar   +1 more source

A Novel Compact Reconfigurable Broadband Antenna for Cognitive Radio Applications

IEEE Transactions on Antennas and Propagation, 2020
Adnan Kantemur   +2 more
exaly  

Antenna-to-Antenna Coupling in Aircraft Radio Systems

1979 IEEE International Symposium on Electromagnetic Compatibility, 1979
David A Bull, Brian W Smithers
openaire   +1 more source

Simplified Interference Modeling in Multi-Cell Multi-Antenna Radio Network Simulations

IEEE Vehicular Technology Conference, 2008
P. Skillermark   +4 more
semanticscholar   +1 more source

UWB Rectangular DRA Integrated with Reconfigurable Narrowband Antenna for Cognitive Radio Applications

IETE Journal of Research, 2021
Asghar Keshtkar   +2 more
exaly  

Integrated compact UWB and frequency reconfigurable antenna with high isolation for cognitive radio

AEU - International Journal of Electronics and Communications, 2023
Ravi Mali   +2 more
exaly  

A circular patch antenna for radio LAN's

IEEE Transactions on Antennas and Propagation, 1997
Y J Guo, R A Sadeghzadeh, S K Barton
exaly  

Transmission Characteristics of a Twisted Radio Wave Based on Circular Traveling-Wave Antenna

IEEE Transactions on Antennas and Propagation, 2015
Shilie Zheng   +4 more
semanticscholar   +1 more source

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