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:
Sep. 09, 1986
Filed:
Jul. 29, 1985
Applicant:
Inventor:
Bernhard A Ziegner, Westford, MA (US);
Assignee:
Motorola, Inc., Schaumburg, IL (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01P / ;
U.S. Cl.
CPC ...
333246 ; 333260 ; 339 / ; 361399 ; 361415 ; 174 / ;
Abstract
Electrical coupling to the ground plane of an MIC is accomplished by forming a gap adjacent an edge of the ground plane and causing a virtual short to appear across the gap. A two part, one-half wavelength transmission line transformer is used to provide the virtual short. The transformer is defined by the conductive members surrounding the MIC and is open at the end corresponding to the gap and shorted at the other end. The impedances of the two parts of the transformer are chosen to maximize the bandwidth of the virtual short.