The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 07, 1982
Filed:
Jul. 23, 1979
Winfield W Salisbury, Scottsdale, AZ (US);
Occidental Research Corporation, Irvine, CA (US);
Abstract
A data communication system has a transmitting antenna (18,19), a source (34) of data to be transmitted, a carrier source (45), and a modulator (41,42,43) located at a first point. The transmitting antenna includes an inductive winding (17) having an electrical length significantly smaller than the wavelength of the carrier. The carrier modulated with the data is applied to the transmitting antenna to generate a magnetic induction field about the first point. A receiving antenna (53,54) is located at a second point remote from the first point. The receiving antenna includes an inductive winding (53) having an electrical length significantly smaller than the wavelength of the carrier. The windings of the transmitting and receiving antennas enclose mutually exclusive regions and are uncoupled magnetically except for the medium between the first and second points. A portion of the field generated by the transmitting antenna is intercepted by the receiving antenna to produce a signal that is demodulated (51) and stored (52).