Abstract: The present invention provides within three particular aspects thereof an isolating and matching device operable to enable an electrically heatable window of a motor vehicle to be used as an efficient VHF communications aerial or antenna; wherein isolating and matching circuitry is provided for Series VHF Matching, Shunt VHF Matching and Split Passband Matching of an electrically heatable window heating element to an aerial input impedance of an aerial feeder circuit of a radio frequency receiver or transmit/receive device.
Type:
Grant
Filed:
March 7, 1989
Date of Patent:
May 22, 1990
Assignee:
BSH Electronics, Ltd.
Inventors:
Jerzy J. Kropielnicki, Brian Easter, James D. Last
Abstract: The present invention provides within three particular aspects thereof an isolating and matching device operable to enable an electrically heatable window of a motor vehicle to be used as an efficient VHF communications aerial or antenna; wherein isolating and matching circuitry is provided for Series VHF Matching, Shunt VHF Matching and Split Passband Matching of an electrically heatable window heating element to an aerial input impedance of an aerial feeder circuit of a radio frequency receiver or transmit/receive device.
Type:
Grant
Filed:
March 18, 1987
Date of Patent:
February 20, 1990
Assignee:
BSH Electronics, Ltd.
Inventors:
Jerzy J. Kropielnicki, Brian Easter, James D. Last
Abstract: The present invention provides within three particular aspects thereof an isolating and matching device operable to enable an electrically heatable window of a motor vehicle to be used as an efficient VHF communications aerial or antenna; wherein isolating and matching circuitry is provided for Series VHF Matching, Shunt VHF Matching and Split Passband Matching of an electrically heatable window heating element to an aerial input impedance of an aerial feeder circuit of a radio frequency receiver or transmit/receive device.
Type:
Grant
Filed:
March 7, 1989
Date of Patent:
February 20, 1990
Assignee:
BSH Electronics, Ltd.
Inventors:
Jerzy J. Kropielnicki, Brian Easter, James D. Last
Abstract: The present invention provides diversity reception to effectively compensate for signal reception fading without using separate antenna structures and while using the heating element antenna of an electrically heated window of a motor vehicle. Such is accomplished by providing common (unbalanced) and balanced signal separation configurations and signal selection circuitry between the heating element antenna and the VHF aerial input terminal of a vehicle radio receiver, wherein the signal selection circuitry selectively connects the signal outputs of the common and balanced signal separation configurations to the VHF aerial input in dependence on monitored characteristics of the radio signals produced at these outputs and received by the vehicle radio receiver.
Type:
Grant
Filed:
March 28, 1986
Date of Patent:
August 2, 1988
Assignee:
BSH Electronics, Ltd.
Inventors:
Jerzy J. Kropielnicki, James D. Last, Brian Easter
Abstract: The present invention provides within three particular aspects thereof an isolating and matching device operable to enable an electrically heatable window of a motor vehicle to be used as an efficient VHF communications aerial or antenna; wherein isolating and matching circuitry is provided for Series VHF Matching, Shunt VHF Matching and Split Passband Matching of an electrically heatable window heating element to an aerial input impedance of an aerial feeder circuit of a radio frequency receiver or transmit/receiver device.
Type:
Grant
Filed:
December 20, 1983
Date of Patent:
March 31, 1987
Assignee:
BSH Electronics, Ltd.
Inventors:
Jerzy J. Kropielnicki, Brian Easter, James D. Last