✦ LIBER ✦

Design of an Efficient X-Band Waveguide-Fed Microstrip Patch Array

✍ Scribed by Wu, Weiwei; Yin, Jiaxian; Yuan, Naichang

Book ID: 120187294
Publisher: IEEE
Year: 2007
Tongue: English
Weight: 914 KB
Volume: 55
Category: Article
ISSN: 0018-926X
DOI: 10.1109/TAP.2007.900171

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✦ Synopsis

The design and fabrication of a 10.5 GHz microstrip patch array fed by a waveguide is presented. The gain of this antenna is 29 dB and its efficiency is 65%. Commonly, the efficiency of conventional microstrip arrays at X-band is not more than 50%. This antenna demonstrates the ability to accomplish a very high efficiency at X-band in a simple structure. This is achieved by using a slotted waveguide to feed the planar array. To allow symmetrical feed of this antenna, the waveguide is a center-fed slotted waveguide, the two ends of which are shorted. The design procedure is expatiated, which contains the study and design of the waveguide-fed subarray structure and of the coax-towaveguide transition structure. For designing this entire antenna, a three-dimensional electromagnetic field simulation software CST Microwave Studio is applied. Good agreement is achieved between measurement and simulation results.

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