5.2 GHz variable-gain amplifier and power amplifier driver for WLAN IEEE 802.11a transmitter front-end

被引：1
|
作者：
Zhang Xuelian [1 ]
Yan Jun [1 ]
Shi Yin [1 ]
Foster, Dai Fa [2 ]
机构：
[1] Chinese Acad Sci, Inst Semicond, Beijing 100083, Peoples R China
[2] Auburn Univ, Dept Elect & Comp Engn, Auburn, AL 36849 USA
来源：
JOURNAL OF SEMICONDUCTORS | 2009年 / 30卷 / 01期
关键词：
SiGe BiCMOS; RFIC; variable-gain amplifier; power amplifier driver; WLAN IEEE 802.11a;
D O I：
10.1088/1674-4926/30/1/015008
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
A 5.2 GHz variable-gain amplifier (VGA) and a power amplifier (PA) driver are designed for WLAN IEEE 802.11a monolithic RFIC. The VGA and the PA driver are implemented in a 50 GHz 0.35 mu m SiGe BiCMOS technology and occupy 1.12 x 1.25 mm(2) die area. The VGA with effective temperature compensation is controlled by 5 bits and has a gain range of 34 dB. The PA driver with tuned loads utilizes a differential input, single-ended output topology, and the tuned loads resonate at 5.2 GHz. The maximum overall gain of the VGA and the PA driver is 29 dB with the output third-order intercept point (0IP3) of 11 dBm. The gain drift over the temperature varying from 30 to 85 degrees C converges within +/- 3 dB. The total current consumption is 45 mA under a 2.85 V power supply.
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页数：5
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