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 Inst. of Commun., Nat. Taiwan Univ., Taipei, Taiwan
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 :
CMOS analogue integrated circuits; MMIC amplifiers; automatic gain control; low-power electronics; wideband amplifiers; 1 V; 1.5 GHz; 20 dB; 4.5 to 6 GHz; CMOS amplifier; figure-of-merit; gain efficiency; gain-control; low noise amplifier; low-voltage amplifier; return losses; small signal gain; variable gain amplifier; wideband amplifier; Bandwidth; Broadband amplifiers; CMOS process; Circuit noise; Frequency; Gain; Impedance matching; Low voltage; Low-noise amplifiers; Noise figure;
Conference_Titel :
Microwave Conference, 2003. 33rd European
Print_ISBN :
1-58053-834-7
DOI :
10.1109/EUMC.2003.1262206
