A Balanced Power Amplifier with Asymmetric Coupled-Line Couplers and Wilkinson Baluns in a 90 nm SiGe BiCMOS Technology

被引:0
|
作者
Gong, Yunyi [1 ]
Cressler, John D. [1 ]
机构
[1] Georgia Tech, Sch Elect & Comp Engn, Atlanta, GA 30332 USA
来源
PROCEEDINGS OF THE 2020 IEEE/MTT-S INTERNATIONAL MICROWAVE SYMPOSIUM (IMS) | 2020年
关键词
60; GHz; balanced power amplifier; SiGe BiCMOS; Wilkinson balun;
D O I
暂无
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
This work presents the design of a high power, two stage, wideband, balanced power amplifier (PA) implemented in a 90 nm SiGe BiCMOS technology. Asymmetric coupled-line couplers were employed at the input and output of the circuit for impedance transformation and quadrature signal splitting and combining. The design achieves 17.3 dB small-signal gain with 41.8 GHz 3-dB bandwidth from 28.1 GHz to 69.9 GHz. To obtain high output power, two novel Wilkinson baluns were included, together with the output coupler, to achieve an overall 4-way differential power combining. A 24.4 dBm saturated output power (PsAT) is achieved with a 22.0 GHz 1-dB PsAT bandwidth covering from 45.0 GHz to 67.0 GHz. The circuit shows a peak power added efficiency (PAE) of 14.2% at 60 GHz and the peak PAE is above 11.5% across the 1-dB PsAT bandwidth. The two stages adopt common-emitter power cells with the first stage biased at 2.0 V and second stage at 1.8 V. The chip size is 1.22 mm(2) including bondpads.
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页码:1097 / 1100
页数:4
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