Patent ID: 7055380
Filing Date: 2006-06-06
Classification: B60C

Abstract:
1. A transmitter of a tire condition monitoring apparatus, wherein the transmitter is located in a tire of a vehicle and transmits data indicating a tire condition using a carrier wave, the transmitter comprising: an oscillator circuit, which generates the carrier wave; an amplifier for amplifying the carrier wave, wherein the amplitude of the carrier wave changes in accordance with a current applied to the amplifier; and a compensation device, which adjusts the current applied to the amplifier for compensating a deviation of the amplitude of the carrier wave generated by the oscillator circuit relative to a predetermined reference value such that the amplitude of the carrier wave becomes equal to the reference value, wherein, when transmission of the transmitter is started, the compensation device first sets up the value of the current applied to the amplifier until the amplitude of the carrier wave reaches the reference value.