Low loss reflection-type phase shifter in Ku band

This article presents a Ku band 360° analogue phase shifter optimized with a genetic algorithm. Varactor diodes are used as the tuning elements. The device presents 360° phase shift on 11% bandwidth. At 12 GHz, the insertion loss is found to be −2.2 ± 0.4 dB. © 2009 Wiley Periodicals, Inc. Microwave Opt Technol Lett 52: 283–285, 2010; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.24944