Fast Simultaneous Distortion Measurement Technique for Mismatch Compensation of Doherty Phased-Array Beamformers

Yuuichi Aoki,Yonghoon Kim,Yongan Hwang,Sung-Gi Yang

2023 IEEE/MTT-S International Microwave Symposium - IMS 2023（2023）

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摘要

This paper demonstrates an inter-element mismatch compensation of a phased-array beamformer with Doherty power amplifiers using a fast inter-modulation distortion (IMD) measurement technique. All 256 elements of phased array are measured simultaneously applying an orthogonal code. The proposed method can characterize the power dependency of IMD about 40 times faster than the conventional method.

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关键词

beamforming,calibration,inter-element mismatch compensation,millimeter-wave technology,OTA test,phased arrays,power amplifiers

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