Research on Distributed Millimeter-Wave Phased-Array Transceiver

2022 Fiscal Year Final Research Report

• Project/Area Number: 21K14206
• Research Category: Grant-in-Aid for Early-Career Scientists
• Allocation Type: Multi-year Fund
• Review Section: Basic Section 21060:Electron device and electronic equipment-related
• Research Institution: Tokyo Institute of Technology
• Principal Investigator: Pang Jian 東京工業大学, 工学院, 特任准教授 (00897001)
• Project Period (FY): 2021-04-01 – 2023-03-31
• Keywords: mmW / transceiver / phased-array / cmos / wireless / 5G / B5G

Outline of Final Research Achievements

This research introduces low-cost, reconfigurable mmW distributed phased-array transceivers. The deployment of such arrays is much more flexible compared with centralized arrays. To realize compact, low-cost characteristics, this research introduces the neutralized bi-directional architecture. The phased-array gain and stability are enhanced with a minimized area and cost. To maintain high-efficiency characteristics, this research explores Doherty PA with higher efficiency at backoff. To minimize the unwanted radiation, this research first introduces a phase shifter with phase compensation network. The errors are therefore reduced. Furthermore, this research introduces on-chip magnitude and phase detection circuits for correcting the errors between channels.

Free Research Field

Silicon-based mmW phased-array transceiver

Academic Significance and Societal Importance of the Research Achievements

The millimeter-wave phased-array is significant in wireless communication. However, conventional centralized phased-arrays cannot deal with the complex environments. In this research, the distributed phased-array transceivers are proposed with less cost and compact size.