Abstract
A low-cost, low side-lobe Ku-band array of microstrip antennas, which is fed by waveguide, is presented in this article.The 72 corner-fed square patches of the array are arranged in a 6-by-12 configuration. A novel waveguide to microstrip line transition with power divider is employed as a center fed for the array to reduce the loss of the microstrip feed line. The measured gain is 24.1 dB. The side-lobe is below −20 dB, and the return loss at resonant frequency 12.5 GHz is less than −25 dB. © 2010 Wiley Periodicals, Inc. Microwave Opt Technol Lett 52: 1582–1584, 2010; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.25263
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