Topic
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.
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Patent•
05 Dec 2001
TL;DR: In this paper, a wave-scanning antenna is disclosed that does not require a rotary joint, and the antenna produces a collimated beam that can be scanned through 360 degrees, where the energy emitted by the horn proceeds upward until deflected through an angle of 90 degrees by an angled reflector located on the axis of rotation.
Abstract: A wave-scanning antenna is disclosed that does not require a rotary joint. The antenna produces a collimated beam that can be scanned through 360 degrees. The beam is directed perpendicular to the antenna's axis of rotation to form a disc-like surveillance volume, or at an angle above or below the perpendicular to form a cone-shaped surveillance volume. The radar's structure contains a transmitter and receiver coupled to a horn protruding through open centers of the support bearing and driven gear into the antenna housing. Energy emitted by the horn proceeds upward until deflected through an angle of 90 degrees by an angled reflector located on the axis of rotation. The energy is collected by a dielectric lens and focused into a collimated beam. Reflected energy is collected by the lens and directed by the reflector to the horn, where it is fed to a waveguide coupled to the receiver.
14 citations
TL;DR: In this article, a broadband horn reflector antenna has been used for simultaneous radiation and reception of radio signals on different frequencies in the three common-carrier bands in which the Bell System has developed radio relay systems.
Abstract: Development of the broadband horn reflector antenna has permitted the simultaneous radiation and reception of radio signals on different frequencies in the three common-carrier bands in which the Bell System has developed radio relay systems. A necessary adjunct to the antenna is a network to combine or separate the common carrier bands and also to combine or separate the two polarizations of any one band. The particular form of the network that is described was designed to meet strict system requirements on impedance match, insertion loss and cross-coupling between ports.
14 citations
TL;DR: In this article, a dielectric-metallic jointly 3D printed V-band (50-75 GHz) lens antenna with preliminary surface roughness modelling is proposed, which takes full advantage of both the dielectrics and metallic 3D printing technologies which help effectively to control the cost of the lens antenna.
Abstract: A dielectric–metallic jointly three-dimensional (3D) printed V-band (50–75 GHz) lens antenna with preliminary surface roughness modelling is proposed. It takes full advantage of both the dielectric and metallic 3D printing technologies which help effectively to control the cost of the lens antenna. The stereolithography apparatus is used to form the lens using Somos Imagine 8000 resin, while the selective laser melting is used to fabricate the feed horn using aluminium alloy. A λ 0
/4 matching layer is adopted between the feed and lens for reduced reflection. The surface roughness of the lens and the feed horn are characterised under a surface profilometer. Owing to the material and process, the surface roughness of the 3D-printed device demonstrates distinctive properties. A preliminary conjecture is made on the surface roughness distribution of 3D-printed devices that are helpful to predict roughness-related performance degradation. The antenna is characterised by electromagnetically and materialwise. It has impedance bandwidth of |
S
11| 32 dBi and symmetric radiation patterns on both E and H planes, which agrees well with simulation.
14 citations
03 Jul 2005
TL;DR: In this article, the authors investigated the performance of multimode feed horns with reflector assembly for radar systems, where ground moving target indicator (GMTI) mode implementation is desired. But the results of the investigation were limited.
Abstract: The investigation results of multimode feed horns are presented, which provide multi-phase centre radiation performance with the reflector. These feed horns with reflector assembly are suitable for radar systems, where ground moving target indicator (GMTI) mode implementation is desired. The simulations were carried out using Ansoft Corporation's HFSS v8.5 for feed horn, and Ticra's GRASP v7.0 for the reflector.
14 citations
01 Aug 2008
TL;DR: In this article, the authors present designs examples of reconfigurable satellite contour beam reflector antennas via multi-objective evolutionary optimization, and explore the concept of a satellite that can be placed in three orbital positions to provide different coverage: Europe, North America and South America.
Abstract: Due to the growing demand for traffic communication, the requirement for reconfigurable antennas for future generation of satellites is growing steadily. This article presents designs examples of reconfigurable satellite contour beam reflector antennas via multi-objective evolutionary optimization. One configuration is composed of shaped reflector illuminated by a single feed horn. To explore the concept, we consider the case of a satellite that can be placed in three orbital positions to provide different coverage: Europe, North America and South America. A second example considers a single shaped reflector illuminated by two feed horns to simultaneously provide dual coverage with frequency reuse
14 citations