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Feed horn

About: Feed horn is a research topic. Over the lifetime, 2395 publications have been published within this topic receiving 26548 citations. The topic is also known as: feedhorn.


Papers
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Proceedings ArticleDOI
22 Sep 2014
TL;DR: Initial optimization results for the wide-band Eleven antenna and Quadruple-Ridged Flared Horn, designed to operate as the reflector antenna feeds at 350 - 1050 MHz, are presented and discussed in the context of the next generation radio telescope - the Square Kilometer Array.
Abstract: Initial optimization results for the wide-band Eleven antenna and Quadruple-Ridged Flared Horn (QRFH), designed to operate as the reflector antenna feeds at 350 - 1050 MHz, are presented and discussed in the context of the next generation radio telescope - the Square Kilometer Array (SKA). First, we describe the procedure that has been developed to carry out time-efficient optimization of the feeds for multiple antenna optics configurations at the system level (so as to maximize the antenna-receiver sensitivity), and then cross-compare the two feed types by assessing the main antenna system characteristics and radio-astronomy performance metrics.

6 citations

Patent
28 Jan 2015
TL;DR: In this paper, a multiple-beam integrated antenna system for a satellite including a support structure having an alignment plate is described, where each feed horn includes a plurality of tapered sections that support propagation modes for both up-link and down-link signals.
Abstract: A multiple beam integrated antenna system for a satellite including a support structure having an alignment plate. The antenna system further includes a plurality of feed horns mounted to the alignment plate, where each feed horn includes a plurality of tapered sections that support propagation modes for both up-link signals and down-link signals. A septum polarizer is mounted to an input end of each feed horn that converts linearly polarized signals to circularly polarized signals for the up-link signals and converts circularly polarized signals to linearly polarized signals for the down-link signals. A Y-shaped waveguide is coupled to each of the polarizers and includes separate receive reject and transmit reject filters so as to keep the up-link signals and the down-link signals from interfering with each other. Flex waveguides couple the transmit leg and the receive leg of each Y-shaped waveguide to RF modules.

6 citations

Proceedings ArticleDOI
01 Sep 1983
TL;DR: The dual-depth corrugated horn gives low cross-polarisation at two separate operating frequencies as discussed by the authors, and a space harmonic formulation has been used to study the influence of the corrugation geometry on the crosspolarization characteristics.
Abstract: The dual-depth corrugated horn gives low cross-polarisation at two separate operating frequencies A space harmonic formulation has been used to study the influence of the corrugation geometry on the cross-polarisation characteristics Results show that about seven slots per wavelength are needed for low cross-polarisation and that operation with frequency bands separated by two to one is practical

6 citations

Patent
29 Jun 2004
TL;DR: In this paper, a radio wave reception converter with a horn and a waveguide is described, and the connecting part between the waveguide and the horn is covered with an exterior cabinet.
Abstract: A radio wave reception converter receives a radio wave and converts the radio wave into an electric signal, and includes a horn introducing a radio wave, and a waveguide arranged at the rear of the horn for guiding a radio wave introduced by the horn. An insulation sheet is located between the waveguide and the horn to seal hermetically the interior of the waveguide and the horn. The connecting part between the waveguide and the horn is covered with an exterior cabinet. The front opening of the horn is covered with a feedome. The structure facilitates the connecting work between the waveguide and the horn, and can ensure airtightness at the connecting part.

6 citations

Proceedings ArticleDOI
10 Jun 1974
TL;DR: In this paper, the authors proposed the Log-Periodic Dipole Antenna (LPDA) as a broadband feed for paraboloid reflectors despite its tendency to cause defocusing owing to axial phase-center movement with frequency.
Abstract: The Log-Periodic Dipole Antenna (LPDA) is attractive as a broadband feed for paraboloid reflectors despite its tendency to cause defocusing owing to axial phase-center movement with frequency. The gain loss due to defocusing in a parabolic reflector is only a function of the defocusing in terms of wavelengths and not dependent on the diameter of the reflector. Hence, antennas such as the LPDA which have a frequency independent phase center location in terms of wavelengths from some geometrical point (virtual apex) will experience a frequency independent defocusing loss over its bandwidth if the virtual apex is placed at the focal point. The optimum feed design for maximum gain will change with varying reflector f/D (reflector focal length to diameter ratio) since spillover, aperture illumination, and defocusing loss are functions of f/D, while primary pattern beamwidth and symmetry, gain and VSWR are functions of the feed parameters.

6 citations


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Performance
Metrics
No. of papers in the topic in previous years
YearPapers
202313
202254
202123
202024
201934
201841