Patent ID: 6072435
Filing Date: 2000-06-06
Classification: H01Q

Abstract:
A glass antenna device for an automobile comprising.a first coil;a second coil;a first antenna conductor provided in a window glass sheet fitted to an opening of an automobile; anda second antenna conductor provided in the window glass sheet,wherein;a first resonance is generated by the impedance of the first antenna conductor and the inductance of the first coil as resonance elements;a second resonance is generated by the impedance of the second antenna conductor and the inductance of the second coil as resonance elements;the second antenna conductor has a length and a shape for a first received signal frequency band;the first antenna conductor has a length and a shape for a second received signal frequency band which is higher in frequency than the first received signal frequency band;a resonance frequency which causes the first resonance and a resonance frequency which causes the second resonance are frequencies by which the sensitivity to the first received signal frequency band is increased; andthe first antenna conductor is electrically connected to the second antenna conductor.