Fully integrated super-regenerative bandpass filters for 3.1-to-7GHz multiband UWB system

In this paper, we present low power and low data rate fully integrated super-regenerative band-pass filters for multi-band UWB system. The high RF gain, low power consumption and poor selectivity are the attractive properties of super regenerative filters for multiband UWB system. The test structure consists of four super- regenerative band-pass filters, tuned at 3.5, 4.5, 5.5 and 6.5 GHz, and has been implemented on 0.18 mum CMOS technology, active area of 1.21 mm². The bandwidth is adjustable between 30-to-500 MHz for data rate of lOOKb/s to IMb/s by two different quenching mechanisms. The sensitivity of -95 dBm is measured at power consumption of 1.275 mW at 1.5 V.