A Gm-Compensated 46-101 GHz Broadband Power Amplifier for High-Resolution FMCW Radars

A Gm-compensated 46-101 GHz broadband power amplifier (PA) for high-resolution FMCW radars is presented in this paper. For bandwidth (BW) expanding, a Gm compensator-based negative feedback chain is applied to the PA, compensating the large gain ripple caused by a high-k transformer (TF)-based ultra...

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Bibliographic Details
Main Authors: Wang, Dong, Shen, Zhengkun, Su, Xiaolei, Liu, Zexue, Tan, Yi, Xu, Chen, Liu, Junhua, Liao, Huailin
Format: Conference Proceeding
Language:English
Subjects:
broadband
Broadband amplifiers
feedback
FMCW radar
Gain
Gm-compensated
High-k dielectric materials
Negative feedback
power amplifier
Power amplifiers
Radar imaging
Ultra wideband technology
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Summary:A Gm-compensated 46-101 GHz broadband power amplifier (PA) for high-resolution FMCW radars is presented in this paper. For bandwidth (BW) expanding, a Gm compensator-based negative feedback chain is applied to the PA, compensating the large gain ripple caused by a high-k transformer (TF)-based ultra-wideband interstage matching network (IMN). Based on the proposed Gm-compensated technique, a flat and ultra-wideband power gain of the PA can be obtained with the high-k TF-based IMN. The proposed PA achieves a 55-GHz BW without additional area overhead and efficiency loss. 74.8% of the fractional BW is obtained with
ISSN:2158-1525
2158-1525
DOI:10.1109/ISCAS51556.2021.9401773