A dual-mode analog baseband with digital-assisted DC-offset calibration for WCDMA/GSM receivers |
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| Authors: | Xie Renzhong Jiang Chen Li Weinan Huang Yumei Hong Zhiliang |
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| Affiliation: | State Key Laboratory of ASIC and System, Fudan University, Shanghai 201203, China |
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| Abstract: | A dual-mode analog baseband with digital-assisted DC-offset calibration(DCOC) for WCDMA/GSM receiver is presented.A digital-assisted DCOC is proposed to solve the DC-offset problem by removing the DC-offset component only.This method has no bandwidth sacrifice.After calibration the measured output residual offset voltage is within 5 mV at most gain settings and the IIP2 is more than 60 dBm.The baseband is designed to be reconfigurable at bandwidths of 200 kHz and 2.1 MHz.Total baseband gain can be programme... |
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| Keywords: | analog baseband digital-assisted DCOC reconfigurable receiver |
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