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A CMOS baseband receiver for wireless broadband communications

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4 Author(s)
Seunghyun Jang ; Mobile RF Research Team, ETRI, Daejeon, South Korea ; Seung-Sik Lee ; Sang-Sung Choi ; Kwang-Chun Lee

This paper presents an UWB baseband receiver including VGAs, LPFs, FGAs and IO buffers, fully integrated in 130 nm CMOS process. The voltage gain range by two VGAs and a FGA for each I/Q path is from -5 to +65 dB providing a dynamic range of 70 dB. For a more stable operation against variations in process, voltage and temperature (PVT), the cut-off frequencies of our receiver can vary from 183 to 548 MHz by changing 3 dB bandwidths of a LPF. The LPF consists of three biquads having different bandwidths and Q factors. The core area of our baseband receiver is about 600 um × 1000 um. The receiver without an IO buffer draws only 13.4 mA from a 1.5 V supply for each I/Q branch.

Published in:

Advanced Communication Technology (ICACT), 2010 The 12th International Conference on  (Volume:2 )

Date of Conference:

7-10 Feb. 2010