volume | PIER Journals

2014-08-15

Design of a Wideband Differential Phase Shifter with the Application of Genetic Algorithm

Jianxiao Wang,

Dr. Jianxiao Wang

National Key Laboratory of Science and Technology on Space Microwave, China Academy of Space Technology

China

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Lin Yang,

Dr. Lin Yang

National Key Laboratory of Science and Technology on Antennas and Microwaves

Xidian University

China

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Yue Liu,

Dr. Yue Liu

National Key Laboratory of Science and Technology on Antennas and Microwaves

Xidian University

China

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Yi Wang,

Dr. Yi Wang

National Laboratory of Antennas and Microwave Technology

Xidian University

China

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Shu-Xi Gong

Prof. Shu-Xi Gong

Xidian University

China

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Progress In Electromagnetics Research Letters, Vol. 48, 45-49, 2014

doi:10.2528/PIERL14051503 | Google Scholar

Abstract

In this paper, a wideband differential phase shifter has been analyzed and designed using Genetic Algorithm (GA). The differential phase shifter consists of two fixed main lines of length λ/2, and parallel open and short stubs of length λ/8, which are shunted at the edge points of the main lines, respectively. With the application of GA, an impedance match and minimum phase deviation for the desired phase shift over a wide frequency band are obtained. In order to verify the optimum results, simulation experiments are made and a 45° phase shifter is fabricated and measured. The phase shifter exhibits an impedance bandwidth (|S₁₁|<-10 dB) and a consistent 45° (±2°) phase difference bandwidth around 66%.

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Jianxiao Wang, Lin Yang, Yue Liu, Yi Wang, and Shu-Xi Gong, "Design of a Wideband Differential Phase Shifter with the Application of Genetic Algorithm," Progress In Electromagnetics Research Letters, Vol. 48, 45-49, 2014.
doi:10.2528/PIERL14051503

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