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 article, a low side-lobe horn antenna with non-uniform slot array operated at K and Ka bands was proposed, which exhibits a peak gain of 25-28.7 dBi and a sidelobe level of about −20 dB in target band.
Abstract: This letter presents a new low side-lobe horn antenna with nonuniform slot array operated at K and Ka band. In the proposed antenna, the nonuniform slot array reduces the side-lobe level by a modification of electric-field distribution in horn aperture. The size of the proposed horn antenna is 78 × 75 × 400 mm3, and the experimental results exhibit a peak gain of 25–28.7 dBi and side-lobe level of about −20 dB in target band. © 2014 Wiley Periodicals, Inc. Microwave Opt Technol Lett 56:1860–1862, 2014
5 citations
Patent•
15 Mar 2013
TL;DR: In this paper, the authors present a point-to-point radio architecture in which the isolation needed between the transmitter and receiver may be achieved through the use of separate antennas, where the receiver is further coupled to a second antenna interface coupled to the first antenna configured to receive signals at the second frequency.
Abstract: Embodiments of the present invention are directed to methods, apparatuses, and systems for implementing a point-to-point radio architecture in which the isolation needed between the transmitter and receiver may be achieved through the use of separate antennas. One embodiment is directed at a radio head comprising a transmitter configured to operate at a first frequency, a receiver configured to operate at a second frequency, and a processor coupled to both the transmitter and the receiver. The transmitter is further coupled to a first antenna interface coupled to a first antenna configured to transmit signals at the first frequency. The receiver is further coupled to a second antenna interface coupled to a second antenna configured to receive signals at the second frequency.
5 citations
Patent•
09 Dec 2015
TL;DR: In this article, a dual-polarized monopulse antenna for millimeter wave detectors is described, which includes a reflection plate antenna which comprises a main reflection plate and a sub-reflection plate, and a power feed horn which is located on a focus of the reflection plate.
Abstract: According to the present invention, disclosed is a dual-polarized monopulse antenna for a millimeter wave detector. The dual-polarized monopulse antenna according to the present invention includes: a reflection plate antenna which comprises a main reflection plate and a sub-reflection plate, and transmits and receives a dual-polarized signal; a power feed horn which is located on a focus of a main reflection plate of the reflection plate antenna; a polarized wave separation device which receives the dual-polarized signal from the power feed horn and separates the received dual-polarized signal into a vertical polarized signal and a horizontal polarized signal; and a monopulse power feed unit which generates an addition pattern from the vertical polarized signal and the horizontal polarized signal which are separated by the polarized wave separation device and also generates a deduction pattern with respect to an azimuth and an altitude. The power feed horn includes an input and output unit comprising a waveguide of 2X2. The waveguide has a 90-degree symmetric structure and is formed in a square shape.
5 citations
01 Feb 2005-Microsystem Technologies-micro-and Nanosystems-information Storage and Processing Systems
TL;DR: In this article, the authors proposed a new fabrication method to realize a 3D feed-horn-shaped MEMS antenna array by using a mirror-reflected parallel-beam illuminator (MRPBI) system with a very slowly rotated, inclined x-y-z stage.
Abstract: This paper describes polidimethylsiloxane(PDMS) based bonding for assembly of microstructure device, an UV lithography applications for fabricating a 3-dimensional (3D) feed-horn-shaped structure mold array, and obtaining parallel light by using a mirror-reflected parallel-beam illuminator (MRPBI) system. A 3D feed-horn-shaped micro-electro-mechanical systems (MEMS) antenna has some attractive features for array applications, which can be used to improve microbolometer performance and to enhance the optical efficiency for thin film transistor-liquid crystal display (TFT-LCD) and other display devices but currently, MEMS technology has faced many difficulties in the fabrication of a 3D feed-horn-shaped MEMS antenna array itself. The purpose of this paper is to propose a new fabrication method to realize a 3D feed-horn-shaped MEMS antenna array by using a mirror-reflected parallel-beam illuminator (MRPBI) System with a very slowly rotated, inclined x-y-z stage. With a conventional UV lithography apparatus, it is very difficult to fabricate high-aspect-ratio structures (HARS) because a typical UV lithography apparatus cannot produce perfectly parallel light. From a theoretical analysis, a columnar illuminator over 6 m in height is required to achieve parallel light, but generally a laboratory height is not 6 m. Also, a novel method of lithography was tried to make a 3D structure array by exposing a planar wafer to the generated parallel light and rotating an inclined x-y-z stage at an ultra-slow rate. An optimization of the 3D structure array can be achieved by simulating a 3D feed-horn MEMS antenna. The feasibility of fabricating both a 3D feed horn MEMS antenna and assembly of detector with 3D feed-horn MEMS antenna was demonstrated. As a result, it seems possible to use a 3D feed-horn-shaped MEMS antenna to improve microbolometer performance and to fabricate several optical microstructure applications.
5 citations