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:
Feb. 21, 1984
Filed:
Feb. 05, 1982
Alan R Carr, Boulder, CO (US);
The United States of America as represented by the Secretary of Commerce, Washington, DC (US);
Abstract
A three-element directional/omnidirectional antenna adapted for use in both transmitting and receiving modes. Crossed loop antennas are mounted on top of a monopole whip antenna and are electrically coupled thereto. Each of the loop antennas consists of an outer larger primary loop and an inner secondary loop joined at its base to the primary loop. Both the primary and secondary loops are interrupted at their top ends opposite the point where they join the monopole antenna. A tuning capacitor is coupled between the two halves of each of the primary loops, while a coaxial antenna feeds the two secondary loops. The coaxial cables feeding the secondary loops pass through a dual ferrite choke disposed within the monopole antenna.