EP0028403A1
Expired / Lapsed
EP
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Stub for matching microstrip circuits
Assignee: Telecom Italia SpA
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Filing: 1980-10-31
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Granted: —
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Expires: 2000-10-31
Abstract
Abstract Introduction of a minimum redundancy into a microstrip stub for microwave circuits allowing reversibility of adjustment, always operating in the same manner, that is by only removing or by only adding conductive material.
Inventors
- 👤 Antonio Scudellari
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-03 12:44
CPC Classifications
H; H01; H01P; H01P7/00; H01P7/08; H01P7/082; H01P5/00; H01P5/02; H01P5/022; H01P5/028
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
37 words
1, Stub for matching microstrip circuits, characterized in that it consists of two cascaded lines, the second (1 2 , w 2 ) of which has a length comprised between 1/4 and 1/2 of the used wavelength.
Claim 2
Dependent Claim
37 words
1, Stub for matching microstrip circuits, characterized in that it consists of two cascaded lines, the second (1 2 , w 2 ) of which has a length comprised between 1/4 and 1/2 of the used wavelength.
Claim 3
Dependent Claim
58 words
Stub according to claim 1 characterized in that the only addition of conductive material at suitable points of said sub causes both the increase and the decrease of the admittance (B) characteristic of the line; said increase or said decrease in the admittance exclusively depending on the point of the stub to which the conductive material is added.
Claim 4
Dependent Claim
58 words
Stub as in claim 1, characterized in that the only removement of conductive material at suitable points of said stub causes both the increase and the decrease in the characteristic admittance (B) of the line; said increase or said decrease in the admittance depending only on the point of the stub from which the conductive material is removed.
Claim 5
Dependent Claim
19 words
Transmission stub for matching microstrip circuits, the whole as described in the text and depicted in the annexed drawings.
Claim 6
Dependent Claim
19 words
Transmission stub for matching microstrip circuits, the whole as described in the text and depicted in the annexed drawings.
References Cited (Backward Citations)
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Cited
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Cited
US3417352A
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DE2310371A1
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US4070639A
Cited
US4105959A
Cited
US4157517A
Cited
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