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:
Aug. 16, 1994
Filed:
Dec. 23, 1992
Mitsunori Kaneko, Tokyo, JP;
Yukinori Miyake, Tokyo, JP;
Hirose Electric Co., Ltd., Tokyo, JP;
Abstract
A variable delay line includes a package housing (61); a circuit board (68) provided within the package housing; a ground conductor pattern (69) provided on a backside of the circuit board; an electrical circuit (70) provided on a top surface of the circuit board and including input and output terminal lands (72, 75); a plurality of pairs of shunt lands (76), each pair being connected by a microstrip line (77); a plurality of pairs of element connection lands (78), each being connected to a delay element (79, 80, 81); and a plurality of pairs of connecting contacts (67) movable between a first position in which the connecting contacts connect the shunt microstrip line in series to the electrical circuit and a second position in which the connecting contacts connect the delay element in series to the electrical circuit while disconnecting the shunt microstrip line from the electrical circuit, eliminating major mismatching elements from the delay line, thereby improving high-frequency characteristics.