US3716805A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Delta connected lumped element circulator
Assignee: Individual
•
Filing: 1971-08-30
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Granted: 1973-02-13
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Expires: 1991-08-30
Abstract
Abstract A junction strip line circulator of the lumped constant type in which the gyromagnetically coupled strip line members are delta connected in the common region and tuned by three capacitors effectively connected respectively from each vertex of the delta to a common point and by a further reactance from the common point to the strip line ground plane. Separate mode tuning is facilitated and the crossovers usually found in Y-connected circulators are eliminated.
Inventors
- 👤 R Knerr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 11:08
CPC Classifications
H; H01; H01P; H01P1/00; H01P1/32; H01P1/38; H01P1/383; H01P1/387
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
173 words
A circulator for operation in a given band of high frequency electromagnetic wave energy comprising at least one ground plane and a strip line configuration above said ground plane, said configuration including three strip line ports arranged in rotational symmetry about a central axis, and a further conductive strip connecting the ports in succession one with the next, a core of magnetically biased gyromagnetic material located on said axis and intercoupling segments of said further strip when any of said ports is excited by high frequency wave energy relative to said ground plane, said segments each exhibiting an inductive reactance, means for introducing a capacitance having first and second portions between said configuration and said ground plane, said first portion being individually related to each one of said ports to a greater degree than to the other of said ports, said second portion being related symmetrically to all of said ports, said capacitance being of such value to interact with the inductive reactance of said segments to produce circulation within said given band.
Claim 2
Dependent Claim
173 words
A circulator for operation in a given band of high frequency electromagnetic wave energy comprising at least one ground plane and a strip line configuration above said ground plane, said configuration including three strip line ports arranged in rotational symmetry about a central axis, and a further conductive strip connecting the ports in succession one with the next, a core of magnetically biased gyromagnetic material located on said axis and intercoupling segments of said further strip when any of said ports is excited by high frequency wave energy relative to said ground plane, said segments each exhibiting an inductive reactance, means for introducing a capacitance having first and second portions between said configuration and said ground plane, said first portion being individually related to each one of said ports to a greater degree than to the other of said ports, said second portion being related symmetrically to all of said ports, said capacitance being of such value to interact with the inductive reactance of said segments to produce circulation within said given band.
Claim 3
Dependent Claim
173 words
A circulator for operation in a given band of high frequency electromagnetic wave energy comprising at least one ground plane and a strip line configuration above said ground plane, said configuration including three strip line ports arranged in rotational symmetry about a central axis, and a further conductive strip connecting the ports in succession one with the next, a core of magnetically biased gyromagnetic material located on said axis and intercoupling segments of said further strip when any of said ports is excited by high frequency wave energy relative to said ground plane, said segments each exhibiting an inductive reactance, means for introducing a capacitance having first and second portions between said configuration and said ground plane, said first portion being individually related to each one of said ports to a greater degree than to the other of said ports, said second portion being related symmetrically to all of said ports, said capacitance being of such value to interact with the inductive reactance of said segments to produce circulation within said given band.
Claim 4
Dependent Claim
173 words
A circulator for operation in a given band of high frequency electromagnetic wave energy comprising at least one ground plane and a strip line configuration above said ground plane, said configuration including three strip line ports arranged in rotational symmetry about a central axis, and a further conductive strip connecting the ports in succession one with the next, a core of magnetically biased gyromagnetic material located on said axis and intercoupling segments of said further strip when any of said ports is excited by high frequency wave energy relative to said ground plane, said segments each exhibiting an inductive reactance, means for introducing a capacitance having first and second portions between said configuration and said ground plane, said first portion being individually related to each one of said ports to a greater degree than to the other of said ports, said second portion being related symmetrically to all of said ports, said capacitance being of such value to interact with the inductive reactance of said segments to produce circulation within said given band.
Claim 5
Dependent Claim
17 words
The circulator according to claim 1 including capacitive gaps along the course of said further conductive strip.
Claim 6
Dependent Claim
18 words
The circulator according to claim 1 wherein said further conductive strip is in the form of a ring.
Claim 7
Dependent Claim
51 words
The circulator according to claim 1 wherein said capacitance is introduced by a conductive member interposed between said configuration and said ground plane so that said first portion is formed between said configuration and said member and so that said second portion is formed between said member and said ground plane.
Claim 8
Dependent Claim
33 words
The circulator according to claim 4 including additional conductive members connected to each of said ports and extending between said configuration and said conductive member to increase said first portion of said capacitance.
Claim 9
Dependent Claim
97 words
A circulator comprising at least one ground plane, a plurality of strip line ports arranged above said ground plane in rotational symmetry about a central axis, a plurality of further strips connecting said ports in succession one with the next, a core of magnetically biased gyromagnetic material located on said axis and intercoupling said further strips when any of said ports is excited by high frequency wave energy relative to said ground plane, and an intermediate conductive layer separated by dielectric material from said conductive strips on one side and from said ground plane on the other.
Claim 10
Dependent Claim
97 words
A circulator comprising at least one ground plane, a plurality of strip line ports arranged above said ground plane in rotational symmetry about a central axis, a plurality of further strips connecting said ports in succession one with the next, a core of magnetically biased gyromagnetic material located on said axis and intercoupling said further strips when any of said ports is excited by high frequency wave energy relative to said ground plane, and an intermediate conductive layer separated by dielectric material from said conductive strips on one side and from said ground plane on the other.
Claim 11
Dependent Claim
78 words
A circulator comprising at least one ground plane, three strip line ports arranged above said ground plane, three further strips connecting each port in succession to the next port in a delta configuration, a core of magnetically biased gyromagnetic material intercoupling said further strips when any of said ports is excited by high frequency wave energy relative to said ground plane, and an intermediate conductive layer separated in space from said conductive strips and from said ground plane.
Claim 12
Dependent Claim
78 words
A circulator comprising at least one ground plane, three strip line ports arranged above said ground plane, three further strips connecting each port in succession to the next port in a delta configuration, a core of magnetically biased gyromagnetic material intercoupling said further strips when any of said ports is excited by high frequency wave energy relative to said ground plane, and an intermediate conductive layer separated in space from said conductive strips and from said ground plane.
Claim 13
Dependent Claim
111 words
A circulator comprising at least one ground plane and a strip line configuration above said ground plane, said configuration including three strip line ports arranged in rotational symmetry about a central axis, and a further conductive strip connecting the ports in succession one with the next, a core of magnetically biased gyromagnetic material located on said axis and intercoupling segments of said further strip when any of said ports is excited by high frequency wave energy relative to said ground plane, means for introducing capacitance between said configuration and a point intermediate said configuration and said ground plane, and means for introducing capacitance between said intermediate point and said ground plane.
Claim 14
Dependent Claim
111 words
A circulator comprising at least one ground plane and a strip line configuration above said ground plane, said configuration including three strip line ports arranged in rotational symmetry about a central axis, and a further conductive strip connecting the ports in succession one with the next, a core of magnetically biased gyromagnetic material located on said axis and intercoupling segments of said further strip when any of said ports is excited by high frequency wave energy relative to said ground plane, means for introducing capacitance between said configuration and a point intermediate said configuration and said ground plane, and means for introducing capacitance between said intermediate point and said ground plane.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-02-13 | 1976-08-14 | 1977-02-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-02-13 | 1980-08-14 | 1981-02-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-02-13 | 1984-08-14 | 1985-02-13 | $7700.00 | Window Closed / Lapsed |