[C-12] Integrated Circuit and Devices

10:00 AM - 10:15 AM JST(1:00 AM - 1:15 AM UTC)Candidate for Academic Incentive AwardCareer Explorer

[C-12-16] A D-Band 90-degree Lange Coupler for High-Accuracy I/Q Modulation

◎△Keita Ito¹, Yudai Yamazaki¹, Kotaro Ito¹, Hiroyuki Sakai¹, Kazuaki Kunihiro¹, Kenichi Okada¹ (1. Institute of Science Tokyo)

Keywords:

D-band,I/Q Modulation,90-degree Lange Coupler,CMOS,Phased Array

In the D-band (110-170 GHz), which is expected for high-speed and high-capacity next-generation wireless systems, phased array technology is useful to overcome spatial loss. However, wideband and highly-accurate phase control is needed, making low-error a 90-degree coupler is necessary for parts like vector sum phase shifters. Therefore, this paper proposes a 90-degree coupler with a metal-layer termination resistor. Consequently, it achieves highly accurate equal division and a 90-degree phase difference with zero power consumption, showing a maximum gain difference of 0.33 dB and a maximum phase error of 0.83°.