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A Digital-Calibrated Transmitter-to-Receiver Isolator in Radar Applications

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3 Author(s)
Kuo, Y.-H. ; Department of Electrical Engineering and Graduate Institute of Communication Engineering, National Taiwan University, Taipei, Taiwan ; Tsai, J.-H. ; Huang, T.-W.

A digital-calibrated isolator for radar is proposed to improve transmitter-to-receiver isolation in this letter. The proposed isolator consists of feedforward and digital-calibrated circuits to cancel the transmitter-to-receiver leakage power. The proposed isolator is implemented in 0.18- $mu$m CMOS technology which shows 27.3 dB isolation while consuming 13.5 mW dc power. The ${rm OP}_{1,{rm dB}}$ of the transmitter-to-antenna is better than ${+}13.5$ dBm.

Published in:

Microwave and Wireless Components Letters, IEEE  (Volume:22 ,  Issue: 12 )

Date of Publication:

Dec. 2012

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