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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
11 Jul 1999
TL;DR: In this article, the authors proposed a co-polarized Ku-band RT/Tx system, which consists of a corrugated conical horn, a waveguide junction with embedded low and pass-band filters, and a diamond shape reflector.
Abstract: Advances in the communication satellite industry have made it possible to utilize smaller antennas in two-way communication networks, commonly known as VSAT (very small aperture terminal) networks. These typically range in aperture size from 60 cm to 4.5 m. It is now possible to build a system with antennas having significantly less gain than the conventional 3.8 m reflector antenna satisfying the 2/spl deg/ satellite spacing. To eliminate the crosstalk, a co-polarized adapter is typically used between the orthomode transducer (OMT) and the corrugated feed horn. In a simpler alternative approach, a single-piece co-polarized diplexer, connected between the feed horn, the high power transmitter, and the receive LNB, is used to frequency select the uplink and the downlink signals. The diplexer is designed to split the two Rx/Tx bands into two separate pens having the same polarization. This paper describes the development of a co-polarized Ku-band Rx/Tx system. Due to stringent electrical requirements, waveguide technology was selected over the microstrip and/or stripline design approaches. The developed system consists of corrugated conical horn, co-polarized waveguide junction with embedded low- and pass-band filters, and a diamond shape reflector.

12 citations

Proceedings ArticleDOI
19 May 2014
TL;DR: In this paper, a compact quad-ridged horn antenna (QRH) for the deep ground penetrating radar water detection applications is designed operate in frequency range of 50MHz to 500MHz.
Abstract: A compact quad-ridged horn antenna (QRH) for the deep ground penetrating radar water detection applications is designed operate in frequency range of 50MHz to 500MHz. Within this contribution the design and simulation of such an antenna is considered for water level detection in Egyptian dessert aquifers. Among the varying horn design parameters, the linear and exponentially tapered walls are studied as well as variations of the curvature of the dielectric waveguide between the two ridges enhancing the matching conditions hence, reducing size and increasing the antenna operational bandwidth. The design goal is to achieve broad bandwidth antenna with maintaining compact dimensions. Two modifications have been introduced on the conventional triangular TEM horn antenna. First multifunction tapering of the horn plates with curvature ending, second inserting perturbing two different ridges between the aperture planes and filling the space between the ridges with high dielectric constant material, in order to lower the operating frequency without increasing the size of the original setup. Replacing the two ridges with four ones, each pair is perpendicular to the other, reduces more the antenna size and improves more its matching. The antenna dimensions are 145 × 102 × 124 cm 3 that resembles improvement in size as compared with similar commercial GPR horn antennas as Satimo Horn model SH 68 with dimensions 2983×1615×2505 cm 3 .

12 citations

Proceedings ArticleDOI
01 Sep 2014
TL;DR: In this article, a double-ridged guide horn (DRGH) antenna with coaxial input feed section is presented, which is suitable to be used in electromagnetic compatibility testing and antenna measurement as a transmitter.
Abstract: In this paper, simulation and measurement results of 0.7-7 GHz double-ridged guide horn (DRGH) antenna with coaxial input feed section is presented. This antenna, due to the large frequency band required by standards, is appropriate to be used in electromagnetic compatibility (EMC) testing and antenna measurement as a transmitter. A step by step method for designing DRGH antenna is given. A suitable taper for the ridges in the horn is designed and its impedance variations along the horn are shown. In addition, a new structure for the electrical field probe in the feed section is introduced by which a shift-down of lower frequency to 0.7 GHz is achieved. A sensitivity analysis is done on the parameters of the proposed structure. Other parameters of the feed section are also investigated and optimized values are obtained. Finally, the proposed antenna has been fabricated and measurement results show good agreement with the simulation.

12 citations

Patent
10 May 2001
TL;DR: In this article, an improved apparatus and method for pointing a satellite dish to receive signals from a geo-synchronous satellite is presented, where an aperture cover is used to partially block electromagnetic radiation provide to a feed horn and power and/or signal quality measurements are taken with the aperture cover covering various portions of the feed horn opening.
Abstract: An improved apparatus and method for pointing a satellite dish to receive signals from a geo-synchronous satellite. An aperture cover is used to partially block electromagnetic radiation provide to a feed horn and power and/or signal quality measurements are taken with the aperture cover covering various portions of the feed horn opening. Based on these power and/or signal quality measurements, it is determined in what direction and what angle in that direction the satellite dish must be re-oriented to achieve optimal signal strength from a geo-synchronous satellite or other fixed position microwave source.

12 citations

Patent
23 Mar 1978
TL;DR: In this article, an antenna structure includes an at least partly parabolic main reflector and an auxiliary reflector, the two reflectors having confronting concave surfaces and lying respectively above and below a horizontal plane including a common focus of these surfaces.
Abstract: An antenna structure includes an at least partly parabolic main reflector and an auxiliary reflector of generally similar configuration, the two reflectors having confronting concave surfaces and lying respectively above and below a horizontal plane including a common focus of these surfaces. A corrugated horn illuminating the auxiliary reflector extends at the level of the latter, with a substantially horizontal axis, between vertical planes passing through the vertex of the parabolic main-reflector surface and through the common focus; in one embodiment, the horn forms with the auxiliary reflector a unitary assembly closed on all sides except for an upper aperture facing the main reflector.

12 citations


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