TY - GEN
T1 - High dynamic range variable gain amplifier using 130 nm CMOS technology for triple-band W-CDMA applications
AU - Suh, Yong Ju
AU - Ishikawa, Shohei
AU - Ohta, Hiroshi
AU - Fujimoto, Ryuichi
AU - Itoh, Nobuyuki
AU - Yoshimasu, Toshihiko
PY - 2008/9/11
Y1 - 2008/9/11
N2 - This paper presents a high dynamic range variable gain amplifier (VGA) using 130 nm CMOS technology for the triple-band W-CDMA applications. The VGA includes an active balun, a two-stage amplifier, two SPDT switches, and a V-I converter which converts a dc control voltage to the dc current for controlling the gain of the each amplifier. The operation voltage is 2.5 V. The dynamic range is over 100 dB at 800 MHz-band and 84 dB at 2 GHz-band. To realize high dynamic range with the two-stage amplifier, a novel exponential approximation function for V-I converter is proposed. The maximum output power at 800 MHz is 7 dBm with a gain of 27 dB. At this rated output power, the adjacent channel power rejection (ACPR) in +/-5 MHz offset frequency bands are -43 dBc which is highly linear performance.
AB - This paper presents a high dynamic range variable gain amplifier (VGA) using 130 nm CMOS technology for the triple-band W-CDMA applications. The VGA includes an active balun, a two-stage amplifier, two SPDT switches, and a V-I converter which converts a dc control voltage to the dc current for controlling the gain of the each amplifier. The operation voltage is 2.5 V. The dynamic range is over 100 dB at 800 MHz-band and 84 dB at 2 GHz-band. To realize high dynamic range with the two-stage amplifier, a novel exponential approximation function for V-I converter is proposed. The maximum output power at 800 MHz is 7 dBm with a gain of 27 dB. At this rated output power, the adjacent channel power rejection (ACPR) in +/-5 MHz offset frequency bands are -43 dBc which is highly linear performance.
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U2 - 10.1109/ICMMT.2008.4540323
DO - 10.1109/ICMMT.2008.4540323
M3 - Conference contribution
AN - SCOPUS:51149097171
SN - 9781424418794
T3 - 2008 International Conference on Microwave and Millimeter Wave Technology Proceedings, ICMMT
SP - 139
EP - 142
BT - 2008 International Conference on Microwave and Millimeter Wave Technology Proceedings, ICMMT
T2 - 2008 International Conference on Microwave and Millimeter Wave Technology, ICMMT
Y2 - 21 April 2008 through 24 April 2008
ER -