volume | PIER Journals

2014-08-15

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

Jian-Xiao Wang,

Dr. Jian-Xiao Wang

Xidian University

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

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%.

Citation

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Jian-Xiao 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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