US4590446A
Expired / Lapsed
US
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Radial waveguide power divider/combiner
Assignee: Northrop Grumman Space and Mission Systems Corp
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Filing: 1984-06-28
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Granted: 1986-05-20
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Expires: 2004-06-28
Abstract
Abstract A waveguide structure operable as a power combiner or a power divider at millimeter-wave frequencies and having desirably low losses, large bandwidth and high power transmitting characteristics. The structure includes a single rectangular input/output waveguide, coupled to a circularly symmetrical waveguide section, which is in turn coupled to a radial waveguide. The radial waveguide has disposed about its periphery multiple transitions to rectangular output/input waveguides.
Inventors
- 👤 Ting-Ih Hsu
- 👤 Mario D. Simonutti
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 18:52
CPC Classifications
H; H01; H01P; H01P5/00; H01P5/12
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
97 words
A non-resonant N-way power divider/combiner network having a large bandwidth, comprising: a rectangular waveguide serving as an input/output port; a first waveguide transition, from rectangular to circularly symmetrical; a circularly symmetrical waveguide section of the coaxial type coupled to the first waveguide transition; a second waveguide transition, from circularly symmetrical to radial; a radial waveguide coupled to the second waveguide transition; a plurality (N) of waveguide transitions of a third type, from radial to rectangular; and a plurality (N) of rectangular waveguides coupled to the waveguide transitions of the third type, to serve as N output/input ports.
Claim 2
Dependent Claim
97 words
A non-resonant N-way power divider/combiner network having a large bandwidth, comprising: a rectangular waveguide serving as an input/output port; a first waveguide transition, from rectangular to circularly symmetrical; a circularly symmetrical waveguide section of the coaxial type coupled to the first waveguide transition; a second waveguide transition, from circularly symmetrical to radial; a radial waveguide coupled to the second waveguide transition; a plurality (N) of waveguide transitions of a third type, from radial to rectangular; and a plurality (N) of rectangular waveguides coupled to the waveguide transitions of the third type, to serve as N output/input ports.
Claim 3
Dependent Claim
31 words
An N-way power divider/combiner network as set forth in claim 1, wherein: the radial waveguide is circularly symmetrical, and provides equal power outputs to the waveguide transitions of the third type.
Claim 4
Dependent Claim
34 words
An N-way power divider/combiner network as set forth in claim 1, wherein: the radial waveguide, the waveguide transitions of the third type, and the plurality of rectangular waveguides are formed as a unitary structure.
Claim 5
Dependent Claim
41 words
An N-way power divider/combiner network as set forth in claim 1, wherein: the first waveguide transition includes a matching bead extending into the rectangular input/output waveguide from the coaxial waveguide section, and a backshort element disposed in the rectangular input/output waveguide.
Claim 6
Dependent Claim
33 words
An N-way power divider/combiner network as set forth in claim 1, wherein: the second waveguide transition includes a matching bead extending into the center of the radial waveguide from the coaxial waveguide section.
Claim 7
Dependent Claim
47 words
An N-way power divider/combiner network as set forth in claim 1, wherein the waveguide transitions of the third type include: a like plurality of rectangular ports disposed uniformly about the periphery of the radial waveguide; and a plurality of dielectric matching chips disposed in the rectangular ports.
Claim 8
Dependent Claim
109 words
A non-resonant N-way power divider/combiner network having a large bandwidth, comprising: a rectangular waveguide serving as an input/output port; a first waveguide transition, from rectangular to coaxial; a coaxial waveguide section coupled to the first waveguide transition; a second waveguide transition, from coaxial symmetrical to radial; a circularly symmetrical radial waveguide coupled to the second waveguide transition, and having a pair of parallel waveguide plates to propagate energy uniformly in a radial sense; a plurality (N) of waveguide transitions of a third type, from radial to rectangular; and a plurality (N) of rectangular waveguides coupled to the waveguide transitions of the third type, to serve as N output/input ports.
Claim 9
Dependent Claim
109 words
A non-resonant N-way power divider/combiner network having a large bandwidth, comprising: a rectangular waveguide serving as an input/output port; a first waveguide transition, from rectangular to coaxial; a coaxial waveguide section coupled to the first waveguide transition; a second waveguide transition, from coaxial symmetrical to radial; a circularly symmetrical radial waveguide coupled to the second waveguide transition, and having a pair of parallel waveguide plates to propagate energy uniformly in a radial sense; a plurality (N) of waveguide transitions of a third type, from radial to rectangular; and a plurality (N) of rectangular waveguides coupled to the waveguide transitions of the third type, to serve as N output/input ports.
Claim 10
Dependent Claim
41 words
An N-way power divider/combiner network as set forth in claim 8, wherein: the first waveguide transition includes a matching bead extending into the rectangular input/output waveguide from the coaxial waveguide section, and a backshort element disposed in the rectangular input/output waveguide.
Claim 11
Dependent Claim
33 words
An N-way power divider/combiner network as set forth in claim 8, wherein: the second waveguide transition includes a matching bead extending into the center of the radial waveguide from the coaxial waveguide section.
Claim 12
Dependent Claim
47 words
An N-way power divider/combiner network as set forth in claim 8, wherein the waveguide transitions of the third type include: a like plurality of rectangular ports disposed uniformly about the periphery of the radial waveguide; and a plurality of dielectric matching chips disposed in the rectangular ports.
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) | 1989-05-19 | 1989-11-18 | 1990-05-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-05-19 | 1993-11-18 | 1994-05-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-05-19 | 1997-11-18 | 1998-05-20 | $7700.00 | Window Closed / Lapsed |