Patent ID: 7574180
Filing Date: 2009-08-11
Classification: H01Q,H04B

Abstract:
1. A transmitter apparatus for use in an automobile having an automobile antenna, said transmitter apparatus being operable to receive an audio signal reproduced from an audio reproducing device separate from the transmitter apparatus and to wirelessly transmit a signal corresponding to the audio signal for reception by the automobile antenna, said transmitter apparatus comprising: plug means for insertion into a jack input of the audio reproducing device so as to enable the reproduced audio signal to be received therefrom; a process circuit to process the received reproduced audio signal so as to form a processed audio signal; modulation means for modulating the processed audio signal according to a predetermined modulation system and producing a modulation signal therefrom; balance conversion means for converting the modulation signal from an unbalanced mode into a balanced mode; and an antenna having a length of approximately three meters formed by a leakage transmission line, the antenna being operable to be arranged inside the automobile such that an end thereof is located near the automobile antenna, and during operation, the antenna emits the modulation signal converted into the balanced mode for reception by the automobile antenna.