公开(公告)号：WO2004010576A1

公开(公告)日：2004-01-29

申请号：PCT/CA2003/001066

申请日：2003-07-24

Applicant: SIRIFIC WIRELESS CORPORATION ,  KHAJEHPOUR, Javad

Inventor： KHAJEHPOUR, Javad

IPC: H03F3/72

CPC classification number: 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

Abstract: 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.

Abstract translation: 本发明一般涉及放大器，并且更具体地涉及多频带和/或多标准低噪声放大器。 目前还没有廉价，高性能和可怕的;性能可完全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合适的LNA。 该LNA包括具有用于接收正RF信号的第一输入和用于提供放大的正RF信号的第一输出的正信号放大器; 负信号放大器，具有用于接收负RF信号的第二输入和用于提供放大的负RF信号的第二输出; 以及可调差分滤波器，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中滤除不期望频率的信号。