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. 14, 1992
Filed:
Mar. 12, 1991
Robert S Kaltenecker, Mesa, AZ (US);
Motorola, Inc., Schaumburg, IL (US);
Abstract
A rigid, monolithic structure for the resonator elements of a tuned stripline segment which may be adjusted by simple, low cost techniques. The resonator elements use a stripline segment (23,24) made from conductive layers of a multilayer printed circuit board. This structure allows the stripline segment to be totally enclosed in a solid, incompressible dielectric material (15,17) which is essentially immune to microphonic effects. A plurality of shorting holes (21) are fabricated at one end of the stripline which serve to short circuit the stripline segment (23) to the ground conductors (18,19) on the layers above and below the stripline segment (23). Adjustment of the resonant frequency is accomplished by removing the plated conductor inside one of the holes at a time, thus removing the short, until the desired resonant frequency is obtained.