Patent ID: 8442438

Claim:
A wireless transmitter comprising: a first filtering unit coupled to a first cable, for filtering out a first frequency modulation (FM) signal transmitted on the first cable, and outputting a first direct current (DC) source transmitted on the first cable; a first power converting unit coupled to the first filtering unit, for converting the first DC source into a second DC source; a second filtering unit coupled to the first power converting unit, for eliminating noise in the second DC source; a first DC blocking unit for blocking the second DC source and outputting a second FM signal; an amplifier coupled to the first DC blocking unit, for amplifying the second FM signal to generate the first FM signal; and a second DC blocking unit coupled to the amplifier and the first cable, for blocking the first DC source transmitted on the first cable from the amplifier, and outputting the first FM signal to the first cable, to transmit the first FM signal to the air.