Frequency Reconfigurable Dual-Band Reflection-Type Phase  Shifter with 360˚ Phase Shift Range for 5G NR FR2 Applications

Munsu Jeong; Minji Kang; Kyutaek Oh; Ockgoo Lee

doi:10.23075/jicas.2024.10.4.003

Munsu Jeong Department of Electrical Engineering, Pusan National University https://orcid.org/0009-0002-0773-7710
Minji Kang Department of Electrical Engineering, Pusan National University
Kyutaek Oh Department of Electrical Engineering, Pusan National University
Ockgoo Lee Department of Electrical Engineering, Pusan National University

DOI: https://doi.org/10.23075/jicas.2024.10.4.003

Keywords: 5G communication, Beamforming, Phased-array system, Reflection-type phase shifter

Abstract

This paper proposes a frequency reconfigurable dual-band passive 360° reflection-type phase shifter (RTPS) for fifth-generation (5G) applications. The proposed phase shifter provides a full 360° phase shift range in multiple 5G new radio (NR) communication bands—n261 (27.5–28.35 GHz) and n260 (37–40 GHz)—using a transformer-based switchable inductor. The proposed transformer-based switchable inductor allows the operating frequency bands to be changed for achieving maximum phase shift range. Consequently, the proposed RPTS achieves a full 360° phase shift range with average insertion losses of 7.65 ± 2.08 and 7.03 ± 0.15 dB at 28 and 39 GHz, respectively. To the best of our knowledge, the proposed RTPS is the first dual-band RTPS to achieve a 360° phase shift in 5G NR FR2 applications.

Author Biographies

Munsu Jeong, Department of Electrical Engineering, Pusan National University

Munsu Jeong received the B.S. degree in Electrical Engineering from Pusan National University, Busan, Korea, in 2024, and is currently pursuing the M.S. degree in electrical engineering at Pusan National University, Busan, Korea. His research interests include RF/mm-wave integrated circuits for mobile applications.

Minji Kang, Department of Electrical Engineering, Pusan National University

Minji Kang is currently pursuing a B.S in Electrical Engineering from Pusan National University, Busan, Korea. Her research interests include RF/mm-wave integrated circuits for mobile applications.

Kyutaek Oh, Department of Electrical Engineering, Pusan National University

Kyutaek Oh received the B.S. and M.S. degrees in Electrical Engineering from Pusan National University, Busan, Korea, in 2017 and 2022, respectively, and is currently working toward a Ph.D. degree in Electrical Engineering at Pusan National University, Busan, Korea.

His research interests include mm-wave power amplifier design for mobile applications and DC-DC converters.

Ockgoo Lee, Department of Electrical Engineering, Pusan National University

Ockgoo Lee received the B.S. degree in electrical engineering from Sungkyunkwan University, Korea, in 2001, the M.S. degree in electrical engineering from the KAIST, Korea, in 2005, and the Ph.D. degree in electrical and computer engineering from the Georgia Institute of Technology, USA, in 2009.

Upon completion of the doctoral degree, he joined Qualcomm Inc., USA, as a Senior Engineer, where he was involved in the development of transmitters and integrated passive circuits on mobile applications. He is currently a faculty member with the Department of Electrical Engineering, Pusan National University, Korea. His research interests include high-frequency integrated circuits and system design for wireless communications.

Homepage : https://olee143.wixsite.com/wicspusan