Title :
A Wideband CMOS Variable-Gain Low-Noise Amplifier for Cable TV Tuners
Author :
Lou, Shuzuo ; Luong, Howard C.
Author_Institution :
Dept. of Electr. & Electron. Eng., Hong Kong Univ. of Sci. & Technol.
Abstract :
A 54 MHz-880 MHz low-noise variable-gain amplifier (LNA) for use in cable TV tuners is designed in a 0.18-mum CMOS process. An active shunt feedback is used to achieve wideband input matching without degrading the noise figure. Inductive shunt-peaking is employed at the output to extend bandwidth. The LNA gain can be tuned from 10 dB to 22 dB. The amplifier measures a NF of 2.8dB in the high-gain setting, IIP3 of 5.0dBm at low-gain setting and draws a current of 23mA from a 1.8-V supply
Keywords :
CMOS analogue integrated circuits; UHF amplifiers; VHF amplifiers; cable television; low noise amplifiers; tuning; wideband amplifiers; 0.18 micron; 1.8 V; 10 to 22 dB; 2.8 dB; 23 mA; 54 to 880 MHz; CMOS process; active shunt feedback; cable TV tuners; inductive shunt-peaking; variable gain low noise amplifier; wideband amplifier; Broadband amplifiers; CMOS process; Cable TV; Degradation; Feedback; Impedance matching; Low-noise amplifiers; Noise figure; Tuners; Wideband;
Conference_Titel :
Asian Solid-State Circuits Conference, 2005
Conference_Location :
Hsinchu
Print_ISBN :
0-7803-9163-2
Electronic_ISBN :
0-7803-9163-2
DOI :
10.1109/ASSCC.2005.251695
