Results 171 to 180 of about 17,866 (186)

A UHF wide-band SAR antenna

Proceedings 2000 IEEE International Conference on Phased Array Systems and Technology (Cat. No.00TH8510), 2002
This UHF wideband antenna was developed for DARPA's synthetic aperture radar (SAR) applications. The small array could be mounted at the belly of an aircraft. The operating frequency covers a 4:1 bandwidth. The antenna including the feed and a contoured ground plane was designed to fit in a shallow radome (50 cm/spl times/100 cm/spl times/100 cm).
J.J. Lee, S. Livingston, G. Sauer, G. Crandall   +3 more
openaire   +1 more source

Ultrawideband VHF/UHF dipole array antenna

2010 IEEE International Symposium on Phased Array Systems and Technology, 2010
A linearly-polarized ultrawideband dipole array antenna has been developed for coverage in the VHF/UHF frequency range for communications or radar applications. The antenna design utilizes a horizontally polarized array of thick tubular dipole elements above a ground plane.
Alan J Fenn, Peter T Hurst, James D Krieger, John S Sandora, Leonard I Parad   +4 more
openaire   +1 more source

Quadrifilar Helix antenna for UHF RFID

2010 IEEE Antennas and Propagation Society International Symposium, 2010
Radio Frequency Identification (RFID) technology is widely used for automatically identifying and tracking objects. Specifically Ultra High Frequency (UHF) (900 MHz) RFID technology is rapidly expanding because it offers the best tradeoffs between read range, cost, and size.
Garret I McKerricher, Jim S Wight
openaire   +1 more source

UHF antenna complex with polarization adaptation

Radioengineering
Formulation of the problem. With the development of the telecommunications industry and the growth in the number of subscribers, there is a need to more efficiently use the microphone frequency resource and increase the capacity in the mid-frequency UHF network.
A.L. Buzov, P.I. Bondar, A.V. Karlov, M.A. Minkin, M.A. Khairullin   +4 more
openaire   +1 more source

Broadband UHF antenna with running wave

2000 10th International Crimean Microwave Conference. "Microwave and Telecommunication Technology". Conference Proceedings (IEEE Cat. No.00EX415), 2000
Directive antenna with a new design of broadband exciter which does not require use of symmetric devices is described in this work. The results of digital modeling and experimental study are presented.
A.V. Ulanovsky, O.A. Yurtsev, I.Yu. Malevich   +2 more
openaire   +1 more source

Plasma antennas based on UHF discharge

2013 IX Internatioal Conference on Antenna Theory and Techniques, 2013
Studied are the antenna properties of the UHF discharge plasma at the threshold of the resonance of the electron Langmuir frequency with the pump second harmonic. The results of experimental measurements of some characteristics of a plasma antenna-amplifier at the LF range are shown. A mathematical model of a similar antenna, which allows proceeding to
openaire   +1 more source

Compact Reconfigurable HF-UHF Antennas

2004
Abstract : The development of a compact reconfigurable HF-UHF antenna is of great practical importance in mobile military communications where low visibility and high mobility are required Variations of monopole and diPOLE ANTENNAS IN USE TODAY ARE NARROWBAND AND ARE PROHIBITIVELY LARGE AND BULKY AT THESE FREQUENCIES Broadband antennas are not only ...
openaire   +1 more source

VHF/UHF Low Profile Antenna Analysis.

1995
Abstract : This report describes the results of an analytical and experimental study to determine the feasibility of developing octave bandwidth, electrically small, low profile antennas in UHF and VHF bands from 20 to 1200 MHz. The combination of achieving both small size and octave bandwidths in the frequency range from 20-160 MHz presents the most ...
Victor K. Tripp, Rickey B. Cotton, J. D. Adams   +2 more
openaire   +1 more source

UHF antennas in concrete

1973 Antennas and Propagation Society International Symposium, 1973
R. FitzGerrell, L. Haidle
openaire   +1 more source

CubeSat Platform Integrated UHF/VHF Antennas

2023 IEEE Space Hardware and Radio Conference, 2023
Eugene Ren, Chien-Hsun Chen
openaire   +1 more source