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:
Apr. 21, 1998
Filed:
Feb. 12, 1997
Rahul Chaturvedi, Albuqerque, NM (US);
Richard Kommrusch, Albuqerque, NM (US);
Motorola Inc., Schaumburg, IL (US);
Abstract
A narrow-band overcoupled directional coupler 300 in a multilayer package is provided. The directional coupler 300 has a laminated structure including a stack of dielectric substrates (301-310) with a primary and a secondary transmission line on the layers of the dielectric substrates. The primary transmission line (A) and the secondary transmission line (B) are coupled by a combination of edge type coupling in which the primary and secondary transmission lines are substantially parallel with each other on a major surface of one of the dielectric substrates (307 for example) and broadside type coupled in which at least portions of the primary transmission line and secondary transmission line are substantially vertically aligned through adjacent dielectric substrates (303, 305 for example). The primary and secondary transmission lines are also substantially overcoupled to provide a predetermined off-center frequency which is different from an overcoupled center frequency.