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.

Dual use Ku/K band corrugated horn for telecommunication satellite

Abstract: This paper describes the design of a dual-frequency compact corrugated horn for use on Ku/K telecommunication satellite antennas. Very stringent requirements for matching, cross polarization and power handling have been satisfied by means of a suitable design strategy. The good comparison between measurements and computations provides a validation of the present design methodology.

Design of Millimeter-Wave Monopole Yagi-Uda-Fed Waveguide Pyramidal Horn Antennas

Abstract: Recently, radar technology to support safe driving is one of the sectors receiving a lot of attention for auto-navigation system of a vehicle. In particular, adaptive cruise control (ACC) radar in the W-band is important. The horn antenna has advantages to achieve high gain and low VSWR in the millimeter-wave band because it is commonly simple structure. In this paper, the monopole Yagi-Uda-fed waveguide pyramidal horn antennas are designed with an optimum size 20x20x30mm3 to operate at the W-band. As a result, this paper presented the possibility of the design of a millimeter-wave pyramidal horn antenna for automotive radar systems.

On-glass automotive diversity antenna and LNA design for S-band satellite digital radio

Abstract: Selection combining diversity system with antennas mounted on windshield and backlite of a vehicle is proposed for satellite digital audio radio applications. Standalone exterior mount antennas on metallic vehicles perform well for satellite digital audio radio applications, but for composite body vehicles or interior mount antennas, antenna performance becomes a real issue. Proposed on-glass two-antenna diversity is one solution for such applications. The antenna correlation is calculated using the S-parameters of the antennas and found to be very low due to many wavelengths separation between the antennas. Design of low noise amplifier, which has sub 1 dB noise figure and good P1dB due to strong cellular signals, is also detailed. A diversity receiver is described and ride tests are performed to assess the performance of the diversity system in real-time, under weak satellite signal environment which is regarded as the most challenging reception condition.

Multi-mode, multi-choke feed horn

Abstract: A multi-mode, multi-choke feed horn that employs a plurality of chokes designed to excite the proper mode content in a satellite uplink signal or downlink signal over a particular wide bandwidth. In one embodiment, the feed horn includes five chokes, where the choke closest to the feed end of the horn has a depth of about 0.075″.

Capacity of multi-antenna systems with adaptive transmission techniques

Abstract: The capacity of multiple antenna systems in the presence of Rayleigh flat fading is considered under the assumption that channel state information (CSI) is available at both transmitter and receiver. The capacity expression for a general dual antenna array system of multiple transmitter and receiver antennas is derived together with an equation that determines the cut-off value for such a system. It is shown that, compared to the case in which there is only receiver CSI, large capacity gains are available with an optimal power and rate adaptation scheme.