Wireless communication system using current formed underground vertical plane polarized antennas
CA 1295372 C · Owner: Eyring Research Institute, Inc. · Inventors: Losee, Ferril A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
U), A wireless communication system and method for employing underground or low profile surface deployed current drivers for inducing ground currents in the earth which define loop antennas for sending and receiving electromagnetic signals propagated through the atmosphere over a wide bandwidth. The system uses a current driver whose impedance is adjusted so that it matches the impedance of a transmitter/receiver connected thereto. The current driver is capacitively coupled to the surrounding ground so that the current driver and the earth effectively function together as a vertical plane polarized antenna which propagates a vertically polarized electromagnetic signal. The system can be …
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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Granted February 4, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 4, 2009.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
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Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.