Zeng Jialong, Ren Yuxin, Tan Cheng, Yuan Yang, Li Jiaxuan, Yu Zhongjun
Aerospace Information Research Institute, Chinese Academy of Sciences, Beijing 100190, China.
School of Electronic, Electrical and Communication Engineering, University of Chinese Academy of Sciences, Beijing 101408, China.
Micromachines (Basel). 2023 Aug 7;14(8):1569. doi: 10.3390/mi14081569.
This paper proposes a novel 8-18 GHz 90° switched T-type phase shifter (TPS). In contrast to the conventional TPS, the proposed TPS adds a compensation capacitance to greatly enhance the phase shifting capacity. Moreover, the designed structure also integrates a filtering compensation network, which can effectively achieve a flat relative phase shift in a wide band. The proposed 90° TPS is fabricated using 0.15 μm GaAs pHEMT technology. The TPS achieves homogeneous phase shift at 8-18 GHz, with the measured phase error of less than ±1.5°. The insertion loss of the proposed phase shifter is 1.3-2.6 dB, and the chip size is merely 0.53 × 0.86 mm. Thanks to these excellent performance characteristics, the designed phase shifter is well-suited for ultra-wideband wireless communication and radar systems.
本文提出了一种新型的8-18GHz 90°开关T型移相器（TPS）。与传统的TPS相比，所提出的TPS增加了一个补偿电容，以大大提高相移能力。此外，所设计的结构还集成了一个滤波补偿网络，能够在宽带内有效地实现平坦的相对相移。所提出的90°TPS采用0.15μm GaAs pHEMT工艺制造。该TPS在8-18GHz实现了均匀的相移，测量的相位误差小于±1.5°。所提出的移相器的插入损耗为1.3-2.6dB，芯片尺寸仅为0.53×0.86mm。由于这些优异的性能特性，所设计的移相器非常适合超宽带无线通信和雷达系统。
