A Dual Power Mode Q/V-Band SiGe HBT Cascode Power Amplifier With a Novel Reconfigurable Four-Way Wilkinson Power Combiner Balun

IF 4 2区工程技术 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC IEEE Transactions on Circuits and Systems II: Express Briefs Pub Date : 2024-11-27 DOI:10.1109/TCSII.2024.3507175

Insu Han;Hanjung Lee;Seong-Mo Moon;Inchan Ju

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引用次数: 0

Abstract

This brief presents a dual power mode (DPM) Q/V-band SiGe HBT cascode power amplifier (PA) for emerging very low-earth-orbit (VLEO) satellite communication (SATCOM). A novel reconfigurable four-way Wilkinson power combiner balun (WPCB) is proposed, where built-in a collector-to-base (CB) junction of upper HBTs in a SiGe HBT cascode is reconfigured to either reverse- or forward-biased to support high power (HP) or low power (LP) modes of the PA, respectively. This DPM scheme neither requires any lossy series switch at the PA output nor dual power supplies, which improves PA efficiency at power back off (PBO) and reduces system complexity. The DPM PA prototype is fabricated in 0.13

$\mu $

m SiGe HBT BiCMOS. For HP/LP modes, the PA attains measured peak output power (POUT) and peak power added efficiency (PAE) 23.3/18.7 dBm and 30.4/25.8% at 45.0 GHz, respectively, demonstrating its DPM capability. For HP/LP modes at 45 GHz, it delivers linear

$P_{\mathrm { OUT}}$

(PAVG) of 17.0/11.8 dBm with average PAE (PAEAVG) of 17.7/13.0% at 250MHz symbol rate DVB-S2X 64 ASPK modulation signal.

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来源期刊

IEEE Transactions on Circuits and Systems II: Express Briefs 工程技术-工程：电子与电气

CiteScore

7.90

自引率

20.50%

发文量

883

审稿时长

3.0 months

期刊介绍： TCAS II publishes brief papers in the field specified by the theory, analysis, design, and practical implementations of circuits, and the application of circuit techniques to systems and to signal processing. Included is the whole spectrum from basic scientific theory to industrial applications. The field of interest covered includes: Circuits: Analog, Digital and Mixed Signal Circuits and Systems Nonlinear Circuits and Systems, Integrated Sensors, MEMS and Systems on Chip, Nanoscale Circuits and Systems, Optoelectronic Circuits and Systems, Power Electronics and Systems Software for Analog-and-Logic Circuits and Systems Control aspects of Circuits and Systems.

期刊最新文献

2024 Index IEEE Transactions on Circuits and Systems II: Express Briefs Vol. 71 Table of Contents IEEE Transactions on Circuits and Systems--II: Express Briefs Publication Information IEEE Circuits and Systems Society Information A Dual Power Mode Q/V-Band SiGe HBT Cascode Power Amplifier With a Novel Reconfigurable Four-Way Wilkinson Power Combiner Balun