SAT_AP720111 Stevens Creek Blvd., #260 Cupertino, CA 95014. U.S.A. Tel: 408.253.3883 Fax: 408.253.6630Lanwave Technology, Inc.System Application Note AN-7 Audio Section noise reduction methods in SATURN Cordless Phone DesignL9002VX / VX2Code Division Spread Spectrum Telephone ChipRevision: V1.2 Date: April 1999Lanwave 1999Page 120111 Stevens Creek Blvd., #260 Cupertino, CA 95014. U.S.A. Tel: 408.253.3883 Fax: 408.253.6630Audio section noise reduction methodsDigital Cordless Phone with high power radio design requires special layout precautions to minimizing audio noise due to RF AM coupling and TX/RX switching current change (commonly known as TDD noise). These problems exists in narrow band cordless phones to a smaller degree due to their low radiated power. In digital cordl……
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