Patent ID: 7068986

Claim:
A method for processing radio waves received at an on-glass antenna of a vehicle, comprising: detecting wave strength of the radio wave at a running vehicle; determining whether the wave strength is above a predetermined strength; calculating change rate of the wave strength when the wave strength is above the predetermined strength; and controlling amplification of the radio waves received by the on-glass antenna on the basis of the change rate of the wave strength, wherein said controlling of amplification of the radio waves comprises: determining whether the change rate of the wave strength is above a reference rate that is obtained as a function of the wave strength; cutting off power supply of an on-glass antenna amplifier for amplifying signals of the on-glass antenna when the change rate of the wave strength is above the reference change rate; and maintaining power supply of the on-glass antenna amplifier when the change rate of the wave strength is not above the reference change rate.