On-glass impedance matching antenna connector

An antenna connector for providing impedance matching to an electronic device adapted to receive signals from said antenna, said antenna connector comprising:

• (a) an insulating substrate comprising a mounting element attached to said substrate;
• (b) an antenna printed on said insulating substrate;
• (c) a transmission line adapted to carry a signal from said antenna to said electronic device;
• (d) a grounding contact adapted to provide an electronic ground for said antenna connector;
• (e) a tapped coil transformer comprising a tapped coil having a wind and two poles, said tapped coil transformer adapted to obtain impedance matching between said transmission line and said antenna, wherein said poles of said tapped coil are connected to said transmission line and to said grounding contact, and said antenna is connected to a wind of said tapped coil;
• and
• (f) a capacitor disposed between said grounding contact and said tapped coil transformer, said capacitor adapted to provide coupling at FM frequencies while opening said grounding contact at AM frequencies to prevent said first and second coils from acting to transform impedance in the AM frequencies.

An on-glass antenna connector for providing impedance matching to an electronic device adapted to receive signals from said antenna, said antenna connector comprising:

• (a) an automotive windshield comprising a mounting pad attached to said windshield;
• (b) an antenna printed on said automotive windshield;
• (c) a transmission line adapted to carry a signal from said antenna to said electronic device;
• (d) a grounding contact adapted to provide an electrical ground for said antenna connector;
• (e) a transformer comprising a first and second coil, said first and second coil each having to poles, said transformer adapted to obtain impedance matching between said transmission line and said antenna, wherein said poles of said first transformer coil are connected to said transmission line and to said grounding contact, and said poles of said second coil are connected to said antenna and said grounding contact;
• (f) an insulating substrate adapted to house said transformer and attach to said mounting pad;
• and
• (g) a capacitor disposed between said grounding contact and said transformer, said capacitor adapted to provide coupling at FM frequencies while opening said ground return line at AM frequencies to prevent said first and second coils from acting to transform impedance in the AM frequencies.

An on-glass antenna connector for providing impedance matching to an electronic device adapted to receive signals from said antenna, said on-glass antenna connector comprising:

• (a) an automotive windshield comprising a mounting pad attached to said windshield;
• (b) an antenna printed on said automotive windshield;
• (c) a transmission line adapted to carry a signal from said antenna to said electronic device;
• (d) a grounding contact adapted to provide an electrical ground for said antenna connector;
• (e) a tapped coil transformer comprising a tapped coil, said tapped coil transformer adapted to obtain impedance matching between said transmission line and said antenna wherein the poles of said tapped coil are connected to said transmission line and to said grounding contact, and said antenna is connected to an appropriate location on said tapped coil;
• (f) an insulating substrate adapted to house said transformer and attach to said mounting pad;
• and
• (g) a capacitor disposed between said grounding contact and said tapped coil transformer, said capacitor adapted to provide coupling at FM frequencies while opening said grounding contact at AM frequencies to prevent said first and second coils from acting to transform impedance in the AM frequencies.