A design of 10MHz/20MHz bandwidth baseband circuit with high performance of ACRR

This paper presents a 10MHz / 20MHz Wide-Bandwidth baseband circuit with two 3 rd order Low-pass Filter for a multi-channel system. To avoid interference between channels, the baseband circuit was designed with the high performance of ACRR(adjacent channel rejection ratio) 70.2 dB at 30 MHz and 60 MHz, respectively. This baseband circuit has the dynamic gain range of 65 dB and the gain step is 1dB. The proposed circuit is designed with a power supply voltage of 1 V and a 65 nm CMOS process.