Title :
A monolithic 2-V 950-MHz CMOS bandpass amplifier with a notch filter for wireless receivers
Author :
Chunbing Guo ; Chan, A.N.L. ; Luong, H.C.
Author_Institution :
Dept. of Electr. & Electron. Eng., Hong Kong Univ., China
Abstract :
A fully-integrated 950-MHz bandpass amplifier for use in a wireless receiver is designed in a standard 0.5-/spl mu/m CMOS process. A Q-compensation circuit is embedded to achieve a desired bandwidth of 25 MHz. Unbalanced g/sub m/-cells are used to maximize the linearity. A notch filter is adopted to achieve an image rejection of 50 dB. A switchable-capacitor array is used to tune the center frequency over 100 MHz range. The amplifier measures a gain of 22 dB with an IIP3 of -17 dBm, a noise figure of 10 dB and draws a current of 25 mA from a 2-V supply.
Keywords :
CMOS analogue integrated circuits; UHF amplifiers; UHF integrated circuits; active filters; band-pass filters; circuit tuning; notch filters; radio receivers; switched capacitor filters; 0.5 micron; 10 dB; 2 V; 22 dB; 25 MHz; 25 mA; 950 MHz; CMOS bandpass amplifier; IIP3; Q-compensation circuit; RF fully-integrated monolithic circuit; bandwidth; frequency tuning; gain; image rejection; linearity; noise figure; notch filter; switchable capacitor array; unbalanced g/sub m/-cell; wireless receiver; Band pass filters; Bandwidth; CMOS process; Circuits; Current measurement; Frequency; Gain measurement; Linearity; Noise figure; Noise measurement;
Conference_Titel :
Radio Frequency Integrated Circuits (RFIC) Symposium, 2001. Digest of Papers. 2001 IEEE
Conference_Location :
Phoenix, AZ, USA
Print_ISBN :
0-7803-6601-8
DOI :
10.1109/RFIC.2001.935647
