Patent US3869585A successfully refreshed from Google Patents.
US3869585A
Expired / Lapsed
US
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Asymmetric quadrature hybrid couplers
Assignee: LORCH ELECTRONICS CORP
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Filing: 1972-12-19
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Granted: 1975-03-04
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Expires: 1992-12-19
Abstract
Abstract The quadrature hybrid couplers hereof are simplified circuitally over prior equivalent couplers. Couplers have four ports, and are constructed with lumped impedances. These couplers are provided with asymmetric networks, that have electrical performance that is the same as that of symmetric ones. The couplers set forth are simpler in construction, have fewer parts, and are substantially smaller in volume.
Inventors
- 👤 Richard V Snyder
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 18:26
CPC Classifications
H; H03; H03H; H03H7/00; H03H7/42; H03H7/48
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
209 words
An asymmetric quadrature hybrid coupler comprising a first and a second pair of ports, a first pair of coupled inductors each inductor of which is in circuit with an individual port of said first port pair, a second pair of coupled inductors each inductor of which is in circuit with an individual port of said second port pair, a first series inductor in conductive electrical connection with one inductor of said first inductor pair, a second series inductor in conductive electrical connection with one inductor of said second inductor pair, said one inductor of said first inductor pair and said first series inductor being in conductive connection with the second inductor of said second inductor pair between corresponding ports of said port pairs, the second inductor of said first inductor pair and said second series inductor being in conductive connection with the said one inductor of said second inductor pair between the remaining corresponding ports of said first and second port pairs, said two series inductors and said two pairs of coupled inductors being the sole operative inductances of the coupler, being connected in electrical asymmetric array, and being electrically proportioned to provide effective performance as an asymmetric coupler that is equivalent to that of a corresponding symmetrical coupler.
Claim 2
Dependent Claim
209 words
An asymmetric quadrature hybrid coupler comprising a first and a second pair of ports, a first pair of coupled inductors each inductor of which is in circuit with an individual port of said first port pair, a second pair of coupled inductors each inductor of which is in circuit with an individual port of said second port pair, a first series inductor in conductive electrical connection with one inductor of said first inductor pair, a second series inductor in conductive electrical connection with one inductor of said second inductor pair, said one inductor of said first inductor pair and said first series inductor being in conductive connection with the second inductor of said second inductor pair between corresponding ports of said port pairs, the second inductor of said first inductor pair and said second series inductor being in conductive connection with the said one inductor of said second inductor pair between the remaining corresponding ports of said first and second port pairs, said two series inductors and said two pairs of coupled inductors being the sole operative inductances of the coupler, being connected in electrical asymmetric array, and being electrically proportioned to provide effective performance as an asymmetric coupler that is equivalent to that of a corresponding symmetrical coupler.
Claim 3
Dependent Claim
45 words
An asymmetric quadrature hybrid coupler as claimed in claim 1, in which said first series inductor and said first inductor pair are wound on a first common core, and said second series inductor and said second inductor pair are wound on a second common core.
Claim 4
Dependent Claim
21 words
An asymmetric quadrature hybrid coupler as claimed in claim 2, in which said first and second cores are of torroidal form.
Claim 5
Dependent Claim
20 words
An asymmetric quadrature hybrid coupler as claimed in claim 3, in which the said torroidal cores are of ferrite material.
Claim 6
Dependent Claim
24 words
An asymmetric quadrature hybrid coupler as claimed in claim 2, in which said first and second inductor pairs are respectively wound in bifilar array.
Claim 7
Dependent Claim
28 words
An asymmetric quadrature hybrid coupler as claimed in claim 2, in which said first and second inductor pairs are wound in bifilar array on their respective said cores.
Claim 8
Dependent Claim
23 words
An asymmetric quadrature hybrid coupler as claimed in claim 6, in which the series inductor on each said core is a monofilar coil.
Claim 9
Dependent Claim
49 words
An asymmetric quadrature hybrid coupler as claimed in claim 1, in which the said first series inductor is in direct connection with the second inductor of said second inductor pair, and the said second series inductor is in direct connection with the second inductor of said first inductor pair.
Claim 10
Dependent Claim
45 words
An asymmetric quadrature hybrid coupler as claimed in claim 8, in which said first series inductor and said first inductor pair are wound on a first common core, and said second series inductor and said second inductor pair are wound on a second common core.
Claim 11
Dependent Claim
39 words
An asymmetric quadrature hybrid coupler as claimed in claim 1, in which the said first series inductor is in direct connection with its associated port, and the said second series inductor is in direct connection with its associAted port.
Claim 12
Dependent Claim
45 words
An asymmetric quadrature hybrid coupler as claimed in claim 10, in which said first series inductor and said first inductor pair are wound on a first common core, and said second series inductor and said second inductor pair are wound on a second common core.
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) | 1978-03-03 | 1978-09-02 | 1979-03-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-03 | 1982-09-02 | 1983-03-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-03 | 1986-09-02 | 1987-03-04 | $7700.00 | Window Closed / Lapsed |