Cellular mobile communication antenna
AssigneeOrion Industries, Inc.
InventorJames Hadzoglou
Life of this patent
Estimating the term…
Abstract
A mobile antenna system for use at frequencies in and above the 800 MHz band having a collinear radiator mounted on one surface of a dielectric such as the window of a vehicle and a tunable coupling circuit disposed internally of a conducted housing mounted on the opposite surface of the dielectric which acts as a counterpoise for coupling RF energy between the radiator and a transmission line connected to a suitable transceiver.
Claims52
A mobile communications antenna system for use at UHF frequencies at least as high as 800 MHz comprising:
- an elongated radiating member attached at one end to a conductive base member affixed to the outer surface of a non-conductive dielectric member of a vehicle;
- and
- a coupling system disposed on the inner surface of said dielectric member and juxtaposed with said base member, said coupling system including a conductive housing defining a counterpoise for said antenna system and a coupling plate member juxtaposed with said base member to define therewith a coupling capacitor for RF energy, said coupling plate member being electrically insulated from said conductive counterpoise housing, a tuned circuit connected to said coupling capacitor and disposed within said conductive counterpoise housing for tuning said antenna system to a desired frequency within said 800 MHz band, and a connector member for a coaxial transmission line electrically connected to said tuned circuit at a point at which the impedance of the transmission line connected to said connector and said tuned circuit are substantially the same.
A mobile communications antenna system usable to radiate radio frequency energy generated by a transceiver located in a vehicle at frequencies in excess of 800 MHz and attachable to a dielectric member of the vehicle comprising:
- an elongated radiating member attached at one end to a conductive base member, said base member being attachable to a first surface of the dielectric member of the vehicle;
- a conductive housing defining a cavity therein, said housing having a non-conductive sidewall;
- means, attachable to a second surface of the dielectric member adjacent said base member, for coupling radio frequency energy with frequencies in excess of 800 MHz to said radiating member, said coupling means being affixed to said non-conductive sidewall of said housing;
- a coaxial connector with first and second conductors, said first connector conductor being electrically coupled to said housing;
- a selectively tunable circuit positioned in said cavity and electrically connected between said coupling means and said second connector conductor;
- and
- a coaxial cable having first and second conductors and connectable between said connector and the transceiver with said first connector conductor electrically engaging said first cable conductor and said first cable conductor electrically engaging a selected conductor of the transceiver so as to form only a single conductive path between said housing and the selected conductor in the transceiver.
A mobile communications antenna system usable to radiate radio frequency eneergy, the energy being generated by a transceiver located in a vehicle, the antenna system being operable at frequencies in excess of 800 MHz, attachable to a dielectric member of the vehicle and comprising:
- an elongated radiating member attached at one end to a supporting member, said radiating member being supportable adjacent the dielectric member of the vehicle;
- connector means couplable to the transceiver and having first and second conductors;
- and
- a coupling system separate from the vehicle but affixable to the dielectric member, juxtaposed with said supporting member, said coupling system including,
- conductive means defining a counterpoise for said antenna system,
- means, spaced from said counterpoise, for coupling radio frequency energy in excess of 800 MHz through the dielectric member to said radiating member,
- said connector means affixed to said coupling system with said first conductor coupled to said counterpoise, and
- means for electrically coupling said radio frequency coupling means to said second conductor
- said antenna system operable with an electrical connection only between said coupling system and the transceiver.
A mobile communications antenna system usable to radiate radio frequency energy, the energy being generated by a transceiver located in a vehicle, the antenna system being operable at frequencies in excess of 800 MHz, attachable to a dielectric member of the vehicle, and comprising:
- an elongated radiating member attached at one end to a supporting member, said radiating member being supportable adjacent the dielectric member of the vehicle;
- connector means couplable to the transceiver and having first and second connectors;
- and
- a coupling system separate from the vehicle but affixable to the dielectric member, juxtaposed with said supporting member, said coupling system including,
- conductive means including a shaped metal member at least a portion of which is positionable adjacent the dielectric member, said shaped metal member defining a counterpoise for said antenna system,
- means spaced from said counterpoise, for coupling radio frequency energy in excess of 800 MHz through the dielectric member to said radiation member,
- said connector means being affixed mechanically to said coupling system with said first conductor coupled to said counterpoise, and
- means for electrically coupling said radio frequency coupling means to said second conductor
- with said antenna system operable in the absence of any direct electric connection between said counterpoise and the vehicle.
A mobile communications antenna system usable to radiate radio frequency energy generated by a transceiver located in a vehicle at frequencies in excess of 800 MHz and attachable to a dielectric member of the vehicle comprising:
- an elongated radiating member attached at one end to a supporting member, said radiating member being supportable adjacent the dielectric member of the vehicle;
- connector means having first and second conductors;
- and
- a coupling system separate from the vehicle but affixable to the dielectric member, juxtaposed with said supporting member, said coupling system including,
- conductive means defining a counterpoise for said antenna system,
- means, spaced from said counterpoise, for coupling radio frequency energy in excess of 800 MHz through the dielectric member to said radiating member,
- said connector means being mechanically affixed to said coupling system with said first conductor coupled to said counterpoise, and
- tunable circuit means for electrically coupling said radio frequency coupling means to said second conductor and with said coupling system cooperating with said connector means and said radiating member such that said antenna system has a bandwidth in excess of 60 MHz.
An antenna system in accordance with claim 45 wherein:
- said supporting member includes a conductive base member with said base member being affixable to a surface of the dielectric member.
A mobile communications antenna system attachable to a dielectric member of a vehicle and usable to radiate radio frequency energy generated by a transceiver located in the vehicle at frequencies at least as high as 800 MHz comprising:
- a radiating member and attached means for supporting said radiating member adjacent the dielectric member;
- a coupling system affixable to the dielectric member of and insulated thereby from the remainder of the vehicle, said coupling system including,
- conductive means defining a counterpoise for the antenna system and means for coupling radio frequency energy through the dielectric member to said radiating member;
- and
- connector means having first and second ends with said first end electrically coupled to said counterpoise and with said second end of said connector means engageable with the transceiver with said counterpoise being electrically coupled at only said second end to a selected conductor in the transceiver.
A mobile communications antenna system attachable to a dielectric member of a vehicle and usable to radiate radio frequency energy generated by a transceiver located in the vehicle at frequencies at least as high as 800 MHz comprising:
- a radiating member and attached means for supporting said radiating member adjacent the dielectric member;
- a coupling system affixable to the dielectric member of the vehicle and insulated thereby from the remainder of the vehicle, said coupling system including,
- a conductive housing defining a counterpoise for the antenna system;
- and
- means for coupling radio frequency energy through the dielectric member, to said radiating member with said coupling means including impedance matching means.
A mobile communications antenna system usable to radiate radio frequency energy, the energy being generated by a transceiver located in a vehicle, the antenna system being operable at frequencies in excess of 800 MHz, attachable to a dielectric member of the vehicle, and comprising:
- an elongated radiating member attached at one end to a supporting member, said radiating member being supportable adjacent the dielectric member of the vehicle;
- connector means couplable to the transceiver and having first and second conductors;
- and
- a coupling system separate from the vehicle but affixable to the dielectric member, juxtaposed with said supporting member, said coupling system including,
- conductive means defining a counterpoise for said antenna system,
- means, spaced from said counterpoise, for coupling radio frequency energy in excess of 800 MHz through the dielectric member to said radiating member,
- said connector means affixed to said coupling system with said first conductor coupled to said counterpoise, and
- means for electrically coupling said radio frequency coupling means to said second conductor
- with said antenna system operable in the absence of any direct electrical connection between said counterpoise and the vehicle and with said coupling system cooperating with said connector means and said radiating member such that said antenna system has a bandwidth in excess of 60 MHz.
Dependencies are inferred from the claim text.