Design of a 2 GHz Linear-in-dB Variable-Gain Amplifier with 80-dB Gain Range

Table 1

VGA performance comparison.

	Gain range; (dB)	Bandwidth; (GHz)	GBP; (GHz)	Power; (mW)	Technology	Linear-in-dB
Wang et al. 2012 [8]	−10~50	2.2	700	2.5	CMOS 90 nm	No
Kumar et al. 2010 [2]	−10~10	4	12	9	SiGe 0.18 um	No
Manstretta and Dauphinee 2007 [4]	−30~30	1	32	250	SiGe 0.18 um	No
Jianhong et al. 2007 [5]	−17~16	0.4~0.8	6	22	CMOS 0.18 um	No
Chang et al. 2009 [6]	−10~17	0.9	7	40	SiGe 0.35 um	Yes
This work	−19~61	2	2805	31	SiGe 0.18 um	Yes