Title :
An auto-I/Q calibrated CMOS transceiver for 802.11g
Author :
Hsieh, Yong-Hsiang ; Hu, Wei-Yi ; Lin, Shin-Ming ; Chao-Liang Chen ; Li, Wen-Kai ; Sao-Jie Chen ; Chen, David J.
Author_Institution :
Dept. of Electr. Eng., Nat. Taiwan Univ., Taipei, Taiwan
Abstract :
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.
Keywords :
CMOS integrated circuits; IEEE standards; integrated circuit design; radiofrequency integrated circuits; transceivers; 0.1 dB; 0.25 micron; 2.7 V; 5.1 dB; CMOS transceiver integrated circuit; DC offset cancellation; IEEE 802.11g; RF transceiver; auto calibration; auto tuning mechanisms; gain mismatch; phase mismatch; superheterodyne architecture; Baseband; Calibration; Circuit testing; Demodulation; Filters; OFDM modulation; Radio frequency; Switches; Transceivers; Voltage; 802.11g; Auto calibration; DC offset cancellation; RF transceiver; gain mismatch; phase mismatch;
Journal_Title :
Solid-State Circuits, IEEE Journal of
DOI :
10.1109/JSSC.2005.857348
