Apparatus and method for a radio frequency (RF) receiver...

Details Apparatus and method for a radio frequency (RF) receiver... Apparatus and method for a radio frequency (RF) receiver...

2007-06-05

2007-06-05

Urban, Edward F. (Department: 2618)

Telecommunications

Receiver or analog modulated signal frequency converter

Local control of receiver operation

C455S315000, C455S339000

Reexamination Certificate

active

10331220

ABSTRACT:
A system and method of improving the rejection of intermodulation (IM) distortion in receivers (100) employing varactor tuning preselecters by exploiting the attenuating properties of a tunable preselecter at specific voltages. The invention takes advantage of a first preselecter (101) and a second preselecter (105) already present in existing receiver circuits enabling them to provide attenuation to incoming radio frequency (RF) signals. This enables the receiver to better operate without the burden of interference and without the need to retrofit the receiver with added attenuator circuitry.

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