Communications receiver with intermodulation reduc

专利名称：Communications receiver with

intermodulation reduction, and method

发明人：Matthias König,Stefan Lichterfeld申请号：US09718593申请日：20001122公开号：US06606488B1公开日：20030812

专利附图：

摘要：In a communications receiver () with a front stage () for receiving a transmittedRF input signal and a mixer stage () for mixing the RF input signal with an oscillator signal(OS) to provide an intermediate frequency (IF) signal, wherein the front stage () and the

mixer stage () are coupled by an interconnecting section (), intermodulation (IM) effectsare reduced by (a) creating a forward (F) current through the section () by forwardcurrent means (R, R, R, R, C, C, C, PD, switch ), (b) creating a reverse (R) current through thesection () by reverse current means, (c) selectively coupling forward (F) and reverse (R)current means to the section () by selector means (), to reduce the amplitude of thesignal (RF OUT), which is applied to the mixer stage (), and (d) operating the mixer stage inits linear operating range.

申请人：MOTOROLA, INC.

代理人：Stevens R. Santema

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