Design of CMOS quadrature modulator for WLAN 802.11a application

被引：0
|
作者：
Li, Zhiqun [1 ]
Su, Junjie [1 ]
Wang, Zhigong [1 ]
机构：
[1] SE Univ, Inst RF & OE ICs, Nanjing 210018, Peoples R China
来源：
2005 IEEE International Workshop on Radio-Frequency Integration Technology, Proceedings: INTEGRATED CIRCUITS FOR WIDEBAND COMMUNICATION AND WIRELESS SENSOR NETWORKS | 2005年
关键词：
quadrature modulator; 802.11a WLAN; double-balanced mixer; transconductance amplifier; common-mode feedback;
D O I：
暂无
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
This paper describes the design of a 1-GHz quadrature modulator for 802.11 a WLAN systems with TSMC 0.18-mu m CMOS technology. By using an improved double-balanced mixer combined with a double-balanced mixer, a common-mode feedback circuit and an improve transconductance amplifier, the linearity of the modulator is improved. The experimental results show the modulator achieves -5 dBm for P-1dB, -42 dB for LO-IF isolation, and a gain of 1.2 dB. The power consumption is 49 mW with a 1.8-V power supply.
引用
收藏
页码：176 / 178
页数：3
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