Method and apparatus to conceal RF interference in AM radio rece

Details Method and apparatus to conceal RF interference in AM radio rece Method and apparatus to conceal RF interference in AM radio rece

1994-02-04

1996-05-21

Urban, Edward F.

Telecommunications

Receiver or analog modulated signal frequency converter

Noise or interference elimination

455298, 455343, 363 21, 363 41, H04B 116

Patent

active

055198899

ABSTRACT:
A method and apparatus is disclosed in which a transformer which has at least one DC output and one input, and a precision timer which generates a control signal having a frequency within a predetermined range of an integer multiple of the carrier frequency spacing. A switch which is connected to the transformer controls the input of the transformer. A controller which is electrically connected to said DC output, said precision timer and the switch pulse width modulates said switch means at an integer multiple of the carrier frequency spacing whereby the DC output of the transformer is regulated.

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