A 110 GHz Continuous 220° Phase Shifter Using Passive Feedback Circuit in 40-nm CMOS Technology

IF 1.2 4区工程技术 Q4 ENGINEERING, ELECTRICAL & ELECTRONIC

Microwave and Optical Technology Letters Pub Date : 2025-08-18 DOI:10.1002/mop.70365

Ruibing Dong, Shinsuke Hara, Mohamed H. Mubarak, Issei Watanabe, Satoru Tanoi, Tatsuo Hagino, Akifumi Kasamatsu

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Abstract

The circuit mechanism of the feedback phase shifter is clearly analyzed based on microwave network analysis, and then an intuitive design approach is proposed. First, the phase shifting concept beyond the addressed design will be analyzed in terms of Y-parameters, and the dependency of the phase on the feedback admittance Y_f will accordingly be concluded. A feedback circuit was therefore designed based on an intuitive phase-magnitude graph, such that the locus of admittance Y_f will cross over various phase lines on the plane when tuning the varactor at the feedback. To demonstrate the approach, a phase shifter was designed, which consists of two successive shifter stages for coarse and fine-tuning that provide 177° and 46° for each stage, respectively, at 110 GHz. The module is adopted in a 1.16 mm² size and shows a total DC power consumption of 92 mW.

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采用40纳米CMOS技术的无源反馈电路的110 GHz连续220°移相器

在微波网络分析的基础上，明确了反馈移相器的电路原理，提出了一种直观的设计方法。首先，将从y参数的角度分析所述设计之外的相移概念，并据此得出相位对反馈导纳Yf的依赖关系。因此，根据直观的相幅图设计了反馈电路，使得在反馈处对变容器进行调谐时，导纳轨迹Yf将跨越平面上的各种相线。为了演示该方法，设计了一个移相器，该移相器由两个连续的移相器级组成，用于粗调和微调，在110 GHz下分别为每个级提供177°和46°。该模块采用1.16 mm2的尺寸，直流总功耗为92 mW。

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来源期刊

Microwave and Optical Technology Letters 工程技术-工程：电子与电气

CiteScore

3.40

自引率

20.00%

发文量

371

审稿时长

4.3 months

期刊介绍： Microwave and Optical Technology Letters provides quick publication (3 to 6 month turnaround) of the most recent findings and achievements in high frequency technology, from RF to optical spectrum. The journal publishes original short papers and letters on theoretical, applied, and system results in the following areas. - RF, Microwave, and Millimeter Waves - Antennas and Propagation - Submillimeter-Wave and Infrared Technology - Optical Engineering All papers are subject to peer review before publication