A 28/38 GHz Dual-Band and Dual-Mode CMOS Power Amplifier Using Constant Optimal Load Impedance Method
Journal
Asia-Pacific Microwave Conference Proceedings, APMC
Journal Volume
2022-November
ISBN
9784902339567
Date Issued
2022-01-01
Author(s)
Abstract
This paper presents a 28/38 GHz dual-band and dual-mode power amplifier (PA) fabricated in a 90-nm CMOS process. With the proposed constant optimal load impedance (Zopt) method, this dual-mode PA can achieve the optimal power performance of both modes using the same matching circuit and improve the linear output power in low-power (LP) mode. In the high-power (HP) mode, the proposed PA demonstrates 23.1/16 dB small-signal gain, 18.4/17.5 dBm saturated output power (Psat), 24.6/22.1% peak power-added efficiency (PAEmax), 18.1/16.5 dBm output P1dB(OP1dB) and 24.4/20.4% corresponding PAE (PAE1dB) at 28/38 GHz. In the LP mode, the proposed PA achieves 20.4/10.7 dB small-signal gain, 12.9/12.4 dBm Psat 12.4/9% PAEmax, 12.5/11.9 dBm OP1dB, 12.2/8.7% PAE1dB at 28/38 GHz.
Subjects
CMOS | dual power modes | millimeter-wave | power amplifier (PA)
Type
conference paper