Title :
A Low-Voltage Fully-Integrated 4.5-6-GHz CMOS Variable Gain Low Noise Amplifier
Author :
Tsai, Ming-Da ; Liu, Ren-Chieh ; Lin, Chin-Shen ; Wang, Huei
Author_Institution :
Graduate Institute of Communication, National Taiwan University, Taipei, Taiwan, R.O.C. Phone: +886-2-23635251 ext.317 Fax:+886-2-23638247
Abstract :
A 4.5-6 GHz CMOS low-voltage wideband variable gain low noise amplifier (VGLNA) with wide gain-control range has been demonstrated in this paper. The VGLNA, operating at a supply voltage as low as 1 V, achieves a small signal gain of 20 dB and 3-dB bandwidth of 1.5 GHz with good return losses. The noise figure is 3.5 dB at 5.5 GHz. A figure-of-merit for gain efficiency (Gain/PDC) of 1.23 dB/mW is achieved, which is believed to be the best among reported results for a CMOS VGLNA operating at multi-GHz frequency.
Keywords :
Bandwidth; CMOS process; Circuit noise; Frequency; Gain; Heterojunction bipolar transistors; Impedance matching; Low voltage; Low-noise amplifiers; Noise figure;
Conference_Titel :
Microwave Conference, 2003 33rd European
Conference_Location :
Munich, Germany
Print_ISBN :
1-58053-834-7
DOI :
10.1109/EUMA.2003.340814
