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1. 发明申请

WO2004010576A9 MULTI-STANDARD AMPLIFIER 审中-公开
标题翻译：多标准放大器
公开(公告)号：WO2004010576A9
公开(公告)日：2004-05-13
申请号：PCT/CA0301066
申请日：2003-07-24
申请人： SIRIFIC WIRELESS CORP , KHAJEHPOUR JAVAD
发明人： KHAJEHPOUR JAVAD
IPC分类号： H03F3/45 , H03F3/72
CPC分类号： H03F1/565 , H03F1/3211 , H03F3/195 , H03F3/45188 , H03F3/45475 , H03F3/72 , H03F2200/111 , H03F2200/294 , H03F2200/372 , H03F2200/429 , H03F2200/451 , H03F2203/45371 , H03F2203/45386 , H03F2203/45481 , H03F2203/45616 , H03F2203/45704 , H03F2203/45726 , H03F2203/7239 , H03J2200/10
摘要： The present invention relates generally to amplifiers, and more specifically to multi-band and/or multi-standard low noise amplifiers. There are currently no inexpensive, highperformance, fully-integrable, multi-standard low noise amplifiers (LNAs) available. The invention provides a suitable LNA for a multi-band and/or multi-standard receiver in wireless and other applications. This LNA comprises a positive signal amplifier having a first input for receiving a positive RF signal, and a first output for providing an amplified positive RF signal; a negative signal amplifier having a second input for receiving a negative RF signal, and a second output for providing an amplified negative RF signal; and a tunable differential filter having a tuning control input, a third input for said first output and a fourth input for said second output; the frequency response of said tunable differential filter varying with a control signal input to said tuning control input, whereby signal of undesired frequencies may be filtered from said first output and said second output.
摘要翻译：本发明一般涉及放大器，更具体地涉及多频和/或多标准低噪声放大器。目前还没有廉价，高性能，完全可集成的多标准低噪声放大器（LNA）。本发明为无线和其他应用中的多频带和/或多标准接收机提供了合适的LNA。该LNA包括具有用于接收正RF信号的第一输入端的正信号放大器和用于提供放大的正RF信号的第一输出端; 具有用于接收负RF信号的第二输入的负信号放大器和用于提供放大的负RF信号的第二输出; 以及可调谐差分滤波器，其具有调谐控制输入，用于所述第一输出的第三输入和用于所述第二输出的第四输入; 所述可调谐差分滤波器的频率响应随着输入到所述调谐控制输入的控制信号而变化，由此可以从所述第一输出和所述第二输出滤除不期望频率的信号。

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