Abstract A miniature microstrip device is described which constitutes a highly effective direct current short circuit device while retaining the ability to transmit a very wide range of frequencies above the cutoff frequency. Each of two printed circuit conductor patterns is positioned on opposite faces of a dielectric substrate. Each conductor has a wide, but tapered, ground plane conductor connecting to a smoothly tapered ''''hot side'''' conductor track tapered such as according to a Tchebycheff pattern. These conductors are reversibly aligned on the substrate such that each ''''hot side'''' conductor is associated with the ground plane portion of the opposite conductor. Each end is adapted to be connected to a conventional microwave coaxial line with the ground plane portion of one printed conductor connected to the shielding portion and the ''''hot side'''' end of the opposite conductor connected to the center conductor of the coaxial line. Thus, each center, conductor is connected through the printed circuit conductor to a grounded portion of the opposite connector, thus grounding all direct current. The microwave frequencies, of course, are transmitted from the input lead across the substrate to the opposite center conductor.
Inventors
👤 Bernard F Gunshinan
👤 Frederick W Hand Jr
Bibliographic Details
Application Number—
JurisdictionUS
Data Sourcegoogle_patents
Last Synchronized2026-11-07 15:59
CPC Classifications
H; H01; H01P; H01P1/00; H01P1/20; H01P1/2007
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
196 words
A microwave direct current short circuit device having an unusually broad passband comprising: a high dielectric substrate having two essentially parallel spaced sides; a first conductor fastened to a first side of said substrate and extending across its length, said conductor having its maximum width at one end of said first side and tapering to its minimum width near the center of said side, with said minimum width maintained over approximately the next quarter of the length of said side and tapering smoothly to a greateR width over the remaining quarter of said length, said width being substantially greater than said minimum width and substantially less than said maximum width; and a second conductor fastened to a second side of said substrate and extending across its length, said second conductor being of essentially the same configuration as said first conductor but having its end of maximum width at the opposite end of said substrate from the corresponding end of said first conductor, said first and second conductors being aligned on said substrate such that the broader tapered portion of each of said conductors acts as a ground plane for the remaining portion of the opposite conductor.
Claim 2
Dependent Claim
196 words
A microwave direct current short circuit device having an unusually broad passband comprising: a high dielectric substrate having two essentially parallel spaced sides; a first conductor fastened to a first side of said substrate and extending across its length, said conductor having its maximum width at one end of said first side and tapering to its minimum width near the center of said side, with said minimum width maintained over approximately the next quarter of the length of said side and tapering smoothly to a greateR width over the remaining quarter of said length, said width being substantially greater than said minimum width and substantially less than said maximum width; and a second conductor fastened to a second side of said substrate and extending across its length, said second conductor being of essentially the same configuration as said first conductor but having its end of maximum width at the opposite end of said substrate from the corresponding end of said first conductor, said first and second conductors being aligned on said substrate such that the broader tapered portion of each of said conductors acts as a ground plane for the remaining portion of the opposite conductor.
Claim 3
Dependent Claim
28 words
A microwave direct current short circuit device as set forth in claim 1 wherein the smaller tapered portion of said conductors is contoured to provide Tchebycheff response characteristics.
Claim 4
Dependent Claim
28 words
A direct current short circuit device as set forth in claim 1 wherein said dielectric material comprises a substrate alumina having said conductors bonded to opposite sides thereof.