WR-3.4 Band Reflection-type Phase Shifters

  • Eun Jung Kim Korea University
  • Sang Geun Jeon Korea University
DOI: https://doi.org/10.23075/jicas.2022.8.2.009
Keywords: Phased array system, Reflection-type Phase Shifter(RTPS), Terahertz band, Triple-resonance load, WR-3.4 band

Abstract

This paper presents two WR-3.4 reflection-type phase shifters (RTPS), i.e. RTPS1 and RTPS2, using in a 250-nm InP double heterojunction bipolar transistor (DHBT) process. The proposed RTPSs adopt a compact broadside-coupled line coupler as a 90° hybrid coupler. In addition, the average loss variation is reduced by optimizing the impedance of coupled-line coupler and the reflective load. The RTPS1 achieves a 180° phase shift with an average insertion loss of 3.5 to 7.9 dB while maintaining loss variation less than 1.7 dB. The RTPS2 exhibits a full 360° phase shift using a triple-resonance load. The chip size including all probing pads is as small as 372 x 458 μm2. The dc power consumption is zero.

Author Biographies

Eun Jung Kim, Korea University

Eun Jung Kim received the B.S. degrees in electrical engineering from Chungnam National University, Daejeon, Korea, in 2019, where she is currently working toward the Ph.D. degree in electrical and electronics engineering. Her research interest includes mm-wave and THz circuits.

Sang Geun Jeon, Korea University

Sang Geun Jeon received the B.S. and M.S. degrees in electrical engineering from Seoul National University, Seoul, South Korea, in 1997 and 1999, respectively, and the M.S. and Ph.D. degrees in electrical engineering from the California Institute of Technology (Caltech), Pasadena, CA, USA, in 2004 and 2006, respectively. From 1999 to 2002, he was a full-time Instructor in electronics engineering with the Korea Air Force Academy, Cheongju, South Korea. From 2006 to 2008, he was a Research Engineer, where he was involved with CMOS phased-array receiver design. Since 2008, he has been with the School of Electrical Engineering, Korea University, Seoul, where he is currently a Professor. His current research interests include integrated circuits and systems at microwave, mm-wave, and terahertz bands for high-speed wireless communications and high-resolution imaging applications.

Homepage : https://arfsl.korea.ac.kr/

Published
2022-04-01
How to Cite
Kim, E. J., & Jeon, S. G. (2022). WR-3.4 Band Reflection-type Phase Shifters. Journal of Integrated Circuits and Systems, 8(2). https://doi.org/10.23075/jicas.2022.8.2.009
Issue
Vol 8 No 2 (2022)
Section
Articles