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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TL;DR: In this paper, a new analytical procedure for the design of the conical corrugated feed horns used in the millimeter and submillimeter wavelength range was presented, which could achieve wideband singlemode operation and wide-band, low return-loss impedance matching simultaneously.
Abstract: This paper presents a new analytical procedure for the design of the conical corrugated feed horns used in the millimeter and submillimeter wavelength range, which could achieve wide-band single-mode operation and wide-band, low return-loss impedance matching simultaneously. A test model of the feed horn designed using this procedure displayed excellent performance, and agreed well with the theoretical predictions. >
79 citations
Patent•
02 Nov 2005
TL;DR: In this article, a collision alerting and avoidance system for use in an aerial vehicle is presented, which consists of a one low profile antenna array disposed on the aerial vehicle, including a plurality of horns; a polar horn, 45 degree horns, and equatorial horns.
Abstract: A collision alerting and avoidance system for use in an aerial vehicle is presented herein. The system comprises a one low profile antenna array disposed on the aerial vehicle. The array includes a plurality of horns; a polar horn, 45-degree horns, and equatorial horns. A transmitter/receiver probe is coupled to each horn. The transmitter/receiver probes are configured to transmit electromagnetic waves and to receive an echo signal reflected from a threat obstacle. A plurality of transmitter/receiver modules are coupled to each of the transmitter/receiver probes. The transmitter/receiver modules are configured to produce electromagnetic waves for transmission and to receive the echo signal. A processor coupled to the plurality of transmitter/receiver modules controls the transmission of electromagnetic waves from the horns and processes the echo signal to provide an output signal containing information regarding the obstacle.
79 citations
TL;DR: In this paper, a new focal plane array for 85-115 GHz is described, which uses InP monolithic-microwave integrated-circuit preamplifiers with 40-dB gain, followed by a wide-band subharmonic mixer to convert to a 5-20 GHz intermediate-frequency band.
Abstract: A new focal plane array for 85-115 GHz is described in this paper. This array has 16 pixels, and uses InP monolithic-microwave integrated-circuit preamplifiers with 40-dB gain, followed by a wide-band subharmonic mixer to convert to a 5-20-GHz intermediate-frequency band. A low-loss isolator is used to achieve an excellent input match. Square corrugated feed horns are used for efficient filling of the focal plane. Critical components are operated at a temperature of 20 K. Noise temperature varies from 50 to 130 K, including all pixels across the full band.
76 citations
TL;DR: In this paper, a model for the principal Eplane radiation of horn antennas was proposed and a complete pattern, including multiple interactions and images of induced line sources, was obtained in infinite series form.
Abstract: Edge diffraction theory is used in analyzing the radiation characteristics of typical horn antennas. The far-sidelobe and backlobe radiation has been solved without employing field equivalence principles which are impractical in the problem. A corner reflector with a magnetic line source located at the vertex is proposed as a model for the principal E -plane radiation of horn antennas. A complete pattern, including multiple interactions and images of induced line sources, is obtained in infinite series form. Diffraction mechanisms are used for appropriate approximations in the computations. The computed patterns are in excellent agreement with measured patterns of typical horn antennas. Radiation intensity of the backlobe relative to mainlobe intensity is obtained as a back-to-front ratio and plotted as a function of antenna dimensions.
74 citations
12 Mar 1991
TL;DR: In this paper, a flat parabolic surface (FLAPS) is proposed for the use of low-cost fabrication techniques to perform various collimating reflector functions, independently of any specific geometric shape, such as would be required with conventional reflectors.
Abstract: A technology applicable to the reflector antenna field is introduced. FLAPS (flat parabolic surface) allows the use of low-cost fabrication techniques to perform various collimating reflector functions, independently of any specific geometric shape, such as would be required with conventional reflectors. The various elements of control afforded by FLAPS technology allow versatile operation in a variety of simultaneous applications not normally compatible with conventional reflector designs. >
72 citations