US3715689A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wideband microwave power divider
Assignee: United States Department of the Army
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Filing: 1972-02-10
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Granted: 1973-02-06
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Expires: 1992-02-10
Abstract
Abstract A microwave structure comprising a parallel transmission line that is bisected by a conducting septum to form two independent microstrip circuits that are in anti-phase; i.e., the conducting septum becomes a common ground plane for a pair of equal amplitude microstrip circuits that are in anti-phase relative to the common ground at points equidistant from the point of bisection of the parallel transmission line. In one embodiment, the proprosed microwave structure is utilized as a power divider with input power being supplied to a conventional microstrip circuit formed of a pair of spaced parallel conductor strip members which also form the parallel transmission line and the anti-phase microstrip circuits, and whose widths are varied to form a reflectionless transition from the input microstrip circuit to the parallel transmission line and subsequently to the pair of output microstrip circuits, each of which receives half of the input power supplied to the device.
Inventors
- 👤 G Laughlin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:17
CPC Classifications
H; H01; H01P; H01P5/00; H01P5/12
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
84 words
A microwave structure comprising, a parallel line transmission line formed of a pair of electrically conductive line members separated by a dielectric material and disposed in spaced parallel planes, and a septum member formed of electrically conductive material disposed in a plane bisecting the distance between the spaced parallel planes of said pair of transmission line members and cooperating with equal lengths of each of said transmission members for converting said parallel line transmission line to a pair of equal amplitude, anti-phase microstrip circuits.
Claim 2
Dependent Claim
84 words
A microwave structure comprising, a parallel line transmission line formed of a pair of electrically conductive line members separated by a dielectric material and disposed in spaced parallel planes, and a septum member formed of electrically conductive material disposed in a plane bisecting the distance between the spaced parallel planes of said pair of transmission line members and cooperating with equal lengths of each of said transmission members for converting said parallel line transmission line to a pair of equal amplitude, anti-phase microstrip circuits.
Claim 3
Dependent Claim
84 words
A microwave structure comprising, a parallel line transmission line formed of a pair of electrically conductive line members separated by a dielectric material and disposed in spaced parallel planes, and a septum member formed of electrically conductive material disposed in a plane bisecting the distance between the spaced parallel planes of said pair of transmission line members and cooperating with equal lengths of each of said transmission members for converting said parallel line transmission line to a pair of equal amplitude, anti-phase microstrip circuits.
Claim 4
Dependent Claim
84 words
A microwave structure comprising, a parallel line transmission line formed of a pair of electrically conductive line members separated by a dielectric material and disposed in spaced parallel planes, and a septum member formed of electrically conductive material disposed in a plane bisecting the distance between the spaced parallel planes of said pair of transmission line members and cooperating with equal lengths of each of said transmission members for converting said parallel line transmission line to a pair of equal amplitude, anti-phase microstrip circuits.
Claim 5
Dependent Claim
48 words
The microwave structure specified in claim 1 wherein said parallel line members are in the form of a pair substantially thin flat strip members having portions disposed one above the other and extending in the same direction to form the line members of a parallel line transmission line.
Claim 6
Dependent Claim
56 words
The microwave structure specified in claim 2 wherein said pair of strip members include respective second portions which are of equal length and which extend in different directions relative to one another and relative to said same direction and cooperate with said septum member to form a pair of microstrip circuits with spaced apart outpUt ports.
Claim 7
Dependent Claim
26 words
The microwave structure specified in claim 3 wherein said second portion of each of said strip members extend in opposite directions perpendicular to said same direction.
Claim 8
Dependent Claim
36 words
The microwave structure specified in claim 1 further including a pair of spaced elements separated from one another by said dielectric material and forming a microstrip input operably connected to said parallel line transmission line elements.
Claim 9
Dependent Claim
38 words
The microwave structure specified in claim 3 wherein said electrically conductive strip members have third portions configured to form an input microstrip circuit operably connected adjacent those portions of said strip members forming said parallel line transmission line.
Claim 10
Dependent Claim
33 words
The microwave structure specified in claim 6 wherein said third portions include a portion of each of said strip members forming respectively a conductor and ground plane element for said microstrip input circuit.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-02-06 | 1976-08-07 | 1977-02-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-02-06 | 1980-08-07 | 1981-02-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-02-06 | 1984-08-07 | 1985-02-06 | $7700.00 | Window Closed / Lapsed |