Carrier converter comprising a variable impedance circuit...

Details Carrier converter comprising a variable impedance circuit... Carrier converter comprising a variable impedance circuit...

H - Electricity

03

C

332/1

H03C 1/50 (2006.01)

Patent

CA 1087699

Abstract of the Disclosure A carrier converter comprises a branching filter for dividing an FM signal into a pair of component signals having amplitudes varying in relation to the FM signal frequency in different frequency ranges. A directional coupler is coupled to a pair of variable impedance circuits. Supplied with the component signals together with a carrier signal, the variable impedance circuits produce, through the coupler, an AM signal of the carrier signal modulated substantially by a modulating signal for the FM signal. When a carrier converter comprises a balanced diode bridge as a variable impedance circuit, an input AM signal may be supplied directly to one pair of the bridge terminals with a carrier signal supplied to the other bridge terminal pair through a balanced-unbalanced converter, through which the bridge produces an output AM signal of the supplied carrier signal modulated substantially by a modulating signal for the input AM signal.

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