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2021-12-06
Design of Full-360° Reflection-Type Phase Shifter Using Trans-Directional Coupler with Multi-Resonance Loads
By
Progress In Electromagnetics Research Letters, Vol. 101, 63-70, 2021
Abstract
In this paper, a full-360° reflection-type phase shifter (RTPS) using a trans-directional (TRD) coupler with multi-resonance loads is presented. It features the characteristics of wide bandwidth, small size, and wide phase shifts with a compact structure and inherent DC blocking. Influences of the multi-resonance loads on the phase shifts and insertion losses of the RTPS are analyzed, and design procedures are given for guidance. For validation, a prototype is designed at 2 GHz. The overall size is 0.56λg × 0.17λg. Measured results show a bandwidth of 20% under the criterion of more than 10-dB return loss. Meanwhile, a relative phase variation of 425° with a maximum insertion loss of 3.6 dB is achieved when the varactor capacitance is varied among 0.35 pF~3.2 pF.
Citation
Hongmei Liu, Xuejiao Wang, Tielin Zhang, Shao-Jun Fang, and Zhongbao Wang, "Design of Full-360° Reflection-Type Phase Shifter Using Trans-Directional Coupler with Multi-Resonance Loads," Progress In Electromagnetics Research Letters, Vol. 101, 63-70, 2021.
doi:10.2528/PIERL21091802
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