1. 25–40 GHz 180° Reflective-Type Phase Shifter using 65-nm CMOS Technology
- Author
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Choul-Young Kim, Sunkyu Choi, Jae-Hyeok Song, Eun-Gyu Lee, Sang-Hyo Kim, Han-Woong Choi, and Jeong-Taek Lim
- Subjects
Materials science ,business.industry ,020208 electrical & electronic engineering ,020206 networking & telecommunications ,02 engineering and technology ,Inductor ,CMOS ,0202 electrical engineering, electronic engineering, information engineering ,Return loss ,Insertion loss ,Optoelectronics ,Hybrid coupler ,Wideband ,business ,Varicap ,Phase shift module - Abstract
This paper proposes a wideband reflection-type phase shifter (RTPS) suitable for 5G applications at mm-wave. In this phase shifter, a quadrature hybrid coupler was used as a transformer-based quadrature hybrid for broadband operation. In addition, the reflection term is composed of a varactor, an inductor, and a transmission line. The RTPS is cascaded to satisfy the phase shift range of 180°. The RTPS was fabricated in 1V 1-poly 9-metal 65-nm CMOS technology. The experimental results show that the constructed RTPS has a phase-shifting range of 184.9°, an insertion loss of 9.1 dB, a return loss of 8 dB, and an insertion loss variation of ±2.5 dB at an operating frequency of 25–43 GHz.
- Published
- 2019
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