IEICE Transactions on Electronics
Online ISSN : 1745-1353
Print ISSN : 0916-8524

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A 28GHz High-Accuracy Phase and Amplitude Detection Circuit for Dual-Polarized Phased-Array Calibration
Yudai YAMAZAKIJoshua ALVINJian PANGAtsushi SHIRANEKenichi OKADA
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ジャーナル 認証あり 早期公開

論文ID: 2022ECP5016

この記事には本公開記事があります。
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This article presents a 28GHz high-accuracy phase and amplitude detection circuit for dual-polarized phased-array calibration. With dual-polarized calibration scheme, external LO signal is not required for calibration. The proposed detection circuit detects phase and amplitude independently, using PDC and ADC. By utilizing a 28GHz-to-140kHz down-conversion scheme, the phase and amplitude are detected more accurately. In addition, reference signal for PDC and ADC is generated from 28GHz LO signal with divide-by-6 dual-step-mixing injection locked frequency divider (ILFD). This ILFD achieves 24.5-32.5GHz (28%) locking range with only 3.0mW power consumption and 0.01mm2 area. In the measurement, the detection circuit achieves phase and amplitude detections with RMS errors of 0.17degree and 0.12dB, respectively. The total power consumption of the proposed circuit is 59mW with 1-V supply voltage.

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