Title :
A Q-enhanced Transformer Coupling Dynamic Dual-Mode 5GHz Bandpass NB / Interference Rejection UWB Filter
Author :
Pham, B. ; Dinh, A.
Author_Institution :
Saskatchewan Univ., Saskatoon
Abstract :
This paper presents a fully integrated dual mode Q-enhanced bandpass/notch filter front-end designed for narrowband and UWB receivers. Using a simple logic state to switch its function, the filter can provide bandpass filtering for channel selection in the NB mode or NB interference rejection in the UWB mode. A Q-enhanced circuit coupled through a transformer is used to realize the modes. Using 1.8 V supply, the filter consumes 22 mW of power and provides a 32 dB interference rejection in the UWB mode and a gain of 24 dB in the NB mode. The design occupies a die area of 1 mm2 using the mainstream 0.18 mum CMOS process.
Keywords :
CMOS integrated circuits; band-pass filters; interference suppression; notch filters; radio receivers; ultra wideband communication; wireless channels; CMOS process; Q-enhanced transformer coupling dynamic dual-mode filter; UWB filter; UWB receivers; bandpass NB filter; channel selection; frequency 5 GHz; gain 24 dB; interference rejection; narrowband filter; noise figure 32 dB; notch filter; voltage 1.8 V; Band pass filters; CMOS process; Coupling circuits; Filtering; Gain; Interference; Logic; Narrowband; Niobium; Switches;
Conference_Titel :
Custom Integrated Circuits Conference, 2007. CICC '07. IEEE
Conference_Location :
San Jose, CA
Print_ISBN :
978-1-4244-1623-3
Electronic_ISBN :
978-1-4244-1623-3
DOI :
10.1109/CICC.2007.4405825
