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An auto-I/Q calibrated CMOS transceiver for 802.11g

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7 Author(s)
Yong-Hsiang Hsieh ; Dept. of Electr. Eng., Nat. Taiwan Univ., Taipei, Taiwan ; Wei-Yi Hu ; Shin-Ming Lin ; Chao-Liang Chen
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The CMOS transceiver IC exploits the superheterodyne architecture to implement a low-cost RF front-end with an auto-I/Q calibration function for IEEE 802.11g. The transceiver supports I/Q gain and phase mismatch auto tuning mechanisms at both the transmitting and receiving ends, which are able to reduce the phase mismatch to within 1° and gain mismatch to 0.1dB. Implemented in a 0.25 μm CMOS process with 2.7 V supply voltage, the transceiver delivers a 5.1 dB receiver cascade noise figure, 7 dBm transmit, and a 1 dB compression point.

Published in:

Solid-State Circuits, IEEE Journal of  (Volume:40 ,  Issue: 11 )