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.
Papers published on a yearly basis
Papers
More filters
Patent•
12 Jun 1978TL;DR: In this paper, an optical transducer and electronic circuitry coupled with optical transducers were used to produce the reference signals from a signal generated by the transducers in response to rotation of the ring with the nutator.
Abstract: Apparatus for generating elevation and azimuth reference signals for use in demodulating a tracking error signal to provide elevation and azimuth error components for use in adjusting the position of a tracking conical scan radar antenna, includes a template ring having a notched periphery and being attached to a rotatable nutator of the antenna such that its peripheral notches are in a predetermined angular phase relationship with a reference position on a feed horn attached on the nutator, during rotation of the feed horn with the nutator. The apparatus further includes an optical transducer and electronic circuitry coupled thereto for producing the reference signals from a signal generated by the transducer in response to rotation of the ring with the nutator. As the ring rotates with the nutator, its notched periphery makes or breaks a photon path between light beam generating and sensing elements of the transducer. The sensing element then generates the signal which is received by the electronic circuitry. In addition to the two reference signals produced by the circuitry, a sync signal is generated and used internally within the circuitry to insure that the reference signals produced are in a proper phase relationship to the reference position on the feed horn of the nutator during rotation thereof.
11 citations
TL;DR: In this article, the antenna analysis of the multi-beam for communication satellite is described, where the design core parameters of the antenna system are optimal antenna diameter, feed horn type and horn size, F/D, and coordinate of offset horns.
Abstract: This paper describes the antenna analysis of the multi-beam for communication satellite. The design core parameters of the antenna system are optimal antenna diameter, feed horn type and horn size, F/D, and the coordinate of offset horns. The paper deals with the method to determine design core parameters of optimal antenna diameter, feed horn type and horn size. F/D. and the coordinate of offset horns, and the performances of design result
11 citations
Patent•
29 Jul 2010TL;DR: In this article, a receiver of a signal communication apparatus is described, which includes a disturbance rejection circuit coupled to the receiving antenna and capable of compensating for the parasite currents flowing between the transmitting antenna and the receiving antennas at the potential variations between the input and output of the galvanic isolation interface.
Abstract: A receiver of a signal communication apparatus; the apparatus having a transmitter for transmitting the signals, the receiver for receiving the signals and a galvanically isolated wireless interface interposed between the transmitter and the receiver and having a transmitting antenna and a receiving antenna. The receiver including a disturbance rejection circuit coupled to the receiving antenna and capable of compensating for the parasite currents flowing between the transmitting antenna and the receiving antenna at the potential variations between the input and output of the galvanic isolation interface.
11 citations
Patent•
15 Jul 2010
TL;DR: In this article, a ground-based avian radar receive antenna is implemented using a vertically oriented offset parabolic cylindrical antenna, which is enclosed in a radome and mechanically rotated 360 degrees in azimuth.
Abstract: A ground based avian radar receive antenna is implemented using a vertically oriented offset parabolic cylindrical antenna. The desired azimuth beamwidth is determined by the width of the parabolic cylinder reflector surface and the desired elevation beamwidth by the height of the parabolic cylinder reflector surface. A vertical array of antenna elements is mounted along the vertical focal line to provide electronic scanning in elevation. Low sidelobe levels are obtained using tapered antenna element illumination. Low cost modular construction with high reflector accuracy is obtained by attaching a thin metal reflector to thin ribs machined or stamped in the shape of the parabolic cylinder reflector surface. The antenna is enclosed in a radome and mechanically rotated 360 degrees in azimuth.
11 citations
TL;DR: A simplified theoretical model based on geometrical optics in combination with physical optics in its vector form is used to analyze the performance of a homogeneous dielectric-sphere lens fed by a feed horn as discussed by the authors.
Abstract: A simplified theoretical model based on geometrical optics (GO) in combination with physical optics (PO) in its vector form is used to analyze the performance of a homogeneous dielectric-sphere lens fed by a feed horn. The proposed model provides physical insight and sufficient accuracy for the initial design cycle. The computed results are also compared to measured data acquired from a prototype model and the agreement is satisfactory. © 2003 Wiley Periodicals, Inc. Microwave Opt Technol Lett 39: 28–33, 2003; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.11117
11 citations