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. 22, 1983
Filed:
Feb. 04, 1981
Anthony M Pavio, Plano, TX (US);
Rockwell International Corporation, El Segundo, CA (US);
Abstract
A -3 dB microwave quadrature coupler is provided on a single layer dielectric substrate and employs only two conductor coupling lines and a relatively wide, cost efficiently manufacturable coupling gap. The substrate is suspended within a mounting case providing a minimum spacing above and below the substrate. The ground plane is on the bottom of the substrate. Microstrip conductor ports are on the top of the substrate and are connected to a pair of parallel spaced coplanar conductor lines on top of the substrate juxtaposed a cut-out region of the ground plane therebelow. The coplanar conductor lines are balanced and coupled to each other, not to the ground plane nor to the mounting case. The coupler is compact, with a reduced length of .lambda./8. The coupler is amenable to implementation on inexpensive low dielectric constant substrate material, still with a relatively wide coupling gap.