← 返回 JSSC 论文列表JSSC 2009第8期RF & Wireless0.18μm CMOS
A 5-GHz Wireless LAN Transmitter with Integrated Tunable High-Q RF Filter
一款集成可调谐高Q值RF滤波器的5GHz无线LAN发射器
5.145GHz中心频率，200MHz带宽，0.8dB纹波，8.26dBm输出功率，32.3dB EVM
无线LAN可调谐滤波器高Q值CMOS发射器
▸创新点1：方法创新 - 采用主动电路增强LC谐振器的Q值，显著提高了滤波器的选择性和性能，解决了传统LC谐振器Q值不足的问题。
▸创新点2：电路创新 - 通过级联两个独立的LC谐振器，实现了宽带宽调谐，滤波器中心频率和带宽均可调，适应多种无线通信需求。
▸创新点3：系统创新 - 在802.11a滑动-IF发射机中集成可调谐高Q值RF滤波器，实现了200-MHz带宽和0.8 dB纹波的5.145-GHz滤波器，满足64-QAM OFDM信号的频谱掩模和EVM要求。
▸创新点4：性能创新 - 发射机在64-QAM OFDM信号下提供8.26 dBm的输出功率，且在低输出功率时EVM达到32.3 dB，显著提升了无线通信系统的性能。
Abstract
A tunable, high-
RF filter suitable for wireless
transmitters has been implemented in a standard digital 0.18-
m
CMOS technology. Active circuits are used to enhance the
of
two independent LC resonators, which are cascaded to form a
wide bandwidth filter that can be tuned in both center frequency
and bandwidth. A 5.145-GHz stagger-tuned filter with a 200-MHz
bandwidth and 0.8 dB of ripple is demonstrated in an 802.11a
sliding-IF transmitter. The transmitter provides spectral mask
and EVM-complia