Glass antenna

A glass antenna arranged on a vehicular window glass, the glass antenna comprising:

• a first antenna configured to receive a radio frequency signal in a first frequency band which has a first wavelength at a central frequency of the first frequency band;
• a coupling element having a length set based on a length obtained by multiplying one-half of the first wavelength by a glass reduction rate defined as a value which is obtained by dividing a propagation velocity of a radio wave in the vehicular window glass by a propagation velocity of the radio wave in air;
• a feeding terminal connected to an antenna amplifier, the first antenna and the coupling element;
• and
• a second antenna configured to receive a radio frequency signal in a second frequency band which has a second wavelength at a central frequency of the second frequency band and send the received radio frequency signal to the antenna amplifier through the coupling element to which the second antenna is capacitively coupled.