US3737810A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wideband tem components
Assignee: RADIATION SYSTEMS Inc
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Filing: 1969-05-05
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Granted: 1973-06-05
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Expires: 1989-05-05
Abstract
Abstract A prior art microwave component for multi-octave operation includes a plurality of sections of coupled TEM transmission lines interconnected in cascade to form a single composite fourport network in which the coupled sections have progressively tighter coupling coefficients. As the number of sections of the composite network increases, or as the bandwidth requirements of the network increase, the separation between adjacent transmission lines becomes progressively smaller unit a point is attained at which the coupling coefficient cannot be realized using conventional manufacturing processes. The disclosed invention provides a technique by which coupling coefficients that have heretofore been unrealizable in practice can be achieved for coupled sections requiring such coupling coefficients, by interconnecting one or more additional groups of cascaded coupled sections in tandem with the original cascade configuration. In a cascade interconnection, the direct and isolated ports of one couple are connected to the input and coupled ports of the next succeeding seciton. In contrast, in the tandem interconnection the direct and coupled ports of one group of cascaded coupled sections are connected to the input and isolated ports of another group of cascaded coupled sections, where a ''''group'''' may constitute simply one section, as well as any larger number of sections.
Inventors
- 👤 J Shelton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 21:40
CPC Classifications
H; H01; H01P; H01P5/00; H01P5/12; H01P5/16; H01P5/18; H01P5/184; H01P5/187; H01P1/00; H01P1/18; H01P1/184
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
66 words
A directional coupler system, comprising a first directional coupler having a first direct and a first coupled output port, a second directional coupler having a second input port and an isolated port, said second input port and said isolated port constituting signal input ports, and means directly connecting said signal input ports, respectively, one to each of said first direct and said first coupled output ports.
Claim 2
Dependent Claim
66 words
A directional coupler system, comprising a first directional coupler having a first direct and a first coupled output port, a second directional coupler having a second input port and an isolated port, said second input port and said isolated port constituting signal input ports, and means directly connecting said signal input ports, respectively, one to each of said first direct and said first coupled output ports.
Claim 3
Dependent Claim
32 words
The combination accOrding to claim 1, wherein said first coupled output port is connected to said isolated port and wherein said first direct output port is connected to said second input port.
Claim 4
Dependent Claim
31 words
The combination according to claim 1, wherein said first coupled output port is connected to said second input port and said first direct output port is connected to said isolated port.
Claim 5
Dependent Claim
15 words
The combination according to claim 1, wherein said first and second directional couplers are identical.
Claim 6
Dependent Claim
20 words
The combination according to claim 1, wherein said first and second directional couplers are composed of dissimilar numbers of sections.
Claim 7
Dependent Claim
25 words
The combination according to claim 1, wherein one of said directional couplers includes an odd number of cascaded sections, the center section having a crossover.
Claim 8
Dependent Claim
18 words
The combination according to claim 1, wherein said second directional coupler is a single quarter wave length coupler.
Claim 9
Dependent Claim
114 words
An array of directional couplers, comprising plural directional couplers, each directional coupler including two coupled transmission lines having a central crossover, each of said couplers including two input ports and two output ports, and means directly connecting the output ports of each directional coupler to the input ports of the next succeeding directional couplers of said array, wherein said directional couplers are quarter wave length couplers and wherein is further provided a multiple cascaded directional coupler having an odd number of quarter wave sections, and having an input and an isolated port, and means connecting said input and isolated ports, respectively to the output ports of the last quarter wave coupler in said array.
Claim 10
Dependent Claim
114 words
An array of directional couplers, comprising plural directional couplers, each directional coupler including two coupled transmission lines having a central crossover, each of said couplers including two input ports and two output ports, and means directly connecting the output ports of each directional coupler to the input ports of the next succeeding directional couplers of said array, wherein said directional couplers are quarter wave length couplers and wherein is further provided a multiple cascaded directional coupler having an odd number of quarter wave sections, and having an input and an isolated port, and means connecting said input and isolated ports, respectively to the output ports of the last quarter wave coupler in said array.
Claim 11
Dependent Claim
62 words
A coupled transmission line phase shifter, comprising a cascade of directional couplers, each comprising an n quarter wave length two conductor transmission lines, where n is an integer greater than 1, the first of said couplers in the cascade providing an input port and an output port, the last of the couplers in the cascade having directly interconnected direct and isolated ports.
Claim 12
Dependent Claim
62 words
A coupled transmission line phase shifter, comprising a cascade of directional couplers, each comprising an n quarter wave length two conductor transmission lines, where n is an integer greater than 1, the first of said couplers in the cascade providing an input port and an output port, the last of the couplers in the cascade having directly interconnected direct and isolated ports.
Claim 13
Dependent Claim
32 words
A coupled transmission line phase shifter, comprising a first phase shifter including a directional coupler having an input port and a coupled output port and having directly interconnected direct and isolated ports.
Claim 14
Dependent Claim
32 words
A coupled transmission line phase shifter, comprising a first phase shifter including a directional coupler having an input port and a coupled output port and having directly interconnected direct and isolated ports.
Claim 15
Dependent Claim
67 words
A coupled transmission line phase shifter, comprising a first coupled transmission line phase shifter having a first input port and a first coupled output port, and further having direct and isolated ports directly interconnected, a second coupled transmission line phase shifter having a second input port directly connected to said first output port and having a coupled output port, and having directly interconnected direct and isolated ports.
Claim 16
Dependent Claim
67 words
A coupled transmission line phase shifter, comprising a first coupled transmission line phase shifter having a first input port and a first coupled output port, and further having direct and isolated ports directly interconnected, a second coupled transmission line phase shifter having a second input port directly connected to said first output port and having a coupled output port, and having directly interconnected direct and isolated ports.
Claim 17
Dependent Claim
84 words
A coupled transmission line phase shifter, comprising a first coupled transmission line phase shifter having a first input port and a first coupled output port, and further having direct and isolated ports directly interconnected, a second coupled transmission line phase shifter having a second input port connected to said first output port and having a coupled output port, and having directly connected direct and isolated ports, wherein the second transmission line phase shifter has closer interline coupling than the first transmission line phase shifter.
Claim 18
Dependent Claim
84 words
A coupled transmission line phase shifter, comprising a first coupled transmission line phase shifter having a first input port and a first coupled output port, and further having direct and isolated ports directly interconnected, a second coupled transmission line phase shifter having a second input port connected to said first output port and having a coupled output port, and having directly connected direct and isolated ports, wherein the second transmission line phase shifter has closer interline coupling than the first transmission line phase shifter.
Claim 19
Dependent Claim
83 words
In a directional coupler system, a first directional coupler having an input and an isolated port and further having a coupled and a direct output port, a second directional coupler comprising two coupled transmission lines having proximate ports and remote ports, and means connecting said coupled and said direct output ports respectively to one of said coupled transmission lines one at a proximate port and the other at a remote port, the remaining ports of said two coupled transmission lines constituting output ports.
Claim 20
Dependent Claim
83 words
In a directional coupler system, a first directional coupler having an input and an isolated port and further having a coupled and a direct output port, a second directional coupler comprising two coupled transmission lines having proximate ports and remote ports, and means connecting said coupled and said direct output ports respectively to one of said coupled transmission lines one at a proximate port and the other at a remote port, the remaining ports of said two coupled transmission lines constituting output ports.
Claim 21
Dependent Claim
47 words
A directional stripline coupler system, comprising a first stripline coupler having tWo first direct and coupled output ports, and a second stripline coupler having two further output ports and two further ports, constituting respectively a direct and an isolated port, connected respectively to said first output ports.
Claim 22
Dependent Claim
47 words
A directional stripline coupler system, comprising a first stripline coupler having tWo first direct and coupled output ports, and a second stripline coupler having two further output ports and two further ports, constituting respectively a direct and an isolated port, connected respectively to said first output ports.
Claim 23
Dependent Claim
78 words
A directional coupler system, comprising a first directional coupler having a first input port, a first direct output port, a first isolated port and a first coupled port, a second directional coupler having a second input port, a second direct output port, a second isolated port and a second coupled port, a direct connection between said first coupled port and said second input port, and a direct connection between said first direct port and said second isolated port.
Claim 24
Dependent Claim
78 words
A directional coupler system, comprising a first directional coupler having a first input port, a first direct output port, a first isolated port and a first coupled port, a second directional coupler having a second input port, a second direct output port, a second isolated port and a second coupled port, a direct connection between said first coupled port and said second input port, and a direct connection between said first direct port and said second isolated port.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-06-04 | 1976-12-04 | 1977-06-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-06-04 | 1980-12-04 | 1981-06-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-06-04 | 1984-12-04 | 1985-06-05 | $7700.00 | Window Closed / Lapsed |