US3681769A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dual polarized printed circuit dipole antenna array
Assignee: TDK Micronas GmbH
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Filing: 1970-07-30
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Granted: 1972-08-01
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Expires: 1990-07-30
Abstract
Abstract An antenna array is provided by stacking two PC boards in a superimposed relationship above a housing acting as a ground plane. Each of these two PC boards contain thereon a symmetrical arrangement of photo etched or printed mat-strip power division networks and dipole elements providing linear polarization, the dipole elements on one PC board being oriented with the dipole elements on the other PC board to provide orthogonal linear polarizations. A ground plane for the dipole elements on the upper PC board is provided by parallel, spaced conductive members in a superimposed, parallel relationship with the dipole elements of the upper PC board. In one embodiment, the ground plane conductive members are provided by conductive strips on a third PC board disposed between the first two PC boards. In another embodiment, the same third PC board is disposed between the lower PC board and the housing ground plane therefore. In a third embodiment, the ground plane conductive members are formed as ridges on the housing ground plane. The dipole elements and the power division networks of the first two PC boards and the conductive members are so oriented that they are mutually transparent to radiation to and from the dipole elements of the first two PC boards. The symmetrical dipole elements on each of the first two PC boards are fed by a balanced, symmetrically branched power division mat-strip network carried by the associated board and a combined balun and power divider coupling an input waveguide to the balanced line network. Each combined balun and power divider includes a coaxial transmission line having its center conductor connected directly to a mat-strip conductor extending radially in two directions from the center conductor to the mat-strip network, this latter mat-strip having the same width as the mat-strip conductors of the network, and its outer conductor connected to a mat-strip conductor connected to the mat-strip network having a greater width than the matstrip conductors of tne network. The mat-strip conductors of the network includes at the branching locations reflectionless impedance transformers formed by a predetermined length of predetermined mat-strip width different than the given width.
Inventors
- 👤 Emmanual J Perrotti
- 👤 Joseph C Ranghelli
- 👤 Robert A Felsenheld
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:39
CPC Classifications
H; H01; H01Q; H01Q9/00; H01Q9/04; H01Q9/06; H01Q9/065; H01Q21/00; H01Q21/06; H01Q21/061; H01Q21/062; H01Q25/00; H01Q25/001
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
170 words
An antenna array comprising: a first plurality of dipole elements; a first ground plane superimposed relative to and associated with said first plurality of elements; a first power distribution network associated with said first plurality of elements and disposed in a superimposed relation to said first ground plane; a second plurality of dipole elements; a second ground plane sUperimposed relative to and associated with said second plurality of elements; and a second power distribution network associated with said second plurality of elements and disposed in a superimposed relation to said second ground plane; each of said first and second plurality of elements being fed at its electrical center by their associated one of said first and second distribution networks; said first plurality of elements, ground plane and power distribution network being disposed in a superimposed relation to and oriented in relation with said second plurality of elements, ground plane and power distribution network to be mutually transparent with respect to radiation to and from both said first and second elements.
Claim 2
Dependent Claim
170 words
An antenna array comprising: a first plurality of dipole elements; a first ground plane superimposed relative to and associated with said first plurality of elements; a first power distribution network associated with said first plurality of elements and disposed in a superimposed relation to said first ground plane; a second plurality of dipole elements; a second ground plane sUperimposed relative to and associated with said second plurality of elements; and a second power distribution network associated with said second plurality of elements and disposed in a superimposed relation to said second ground plane; each of said first and second plurality of elements being fed at its electrical center by their associated one of said first and second distribution networks; said first plurality of elements, ground plane and power distribution network being disposed in a superimposed relation to and oriented in relation with said second plurality of elements, ground plane and power distribution network to be mutually transparent with respect to radiation to and from both said first and second elements.
Claim 3
Dependent Claim
195 words
An antenna array comprising: a first printed circuit board including thereon at least a first pair of dipole elements each having a given orientation; a second printed circuit board including thereon at least a second pair of dipole elements each having an orientation orthogonal to said given orientation, said second board being coextensive with and being disposed in spaced, parallel relation to said first board, said second pair of dipole elements being in a superimposed relationship with respect to said first pair of dipole elements; a conductive body coextensive with, parallel to and spaced a predetermined amount from one surface of one of said first and second boards to provide a ground plane therefore; and at least a pair of spaced, parallel conductive members each having an orientation parallel to and in a superimposed relation with a different one of said dipole elements on the other of said first and second boards and spaced from said other of said first and second boards by said predetermined amount to provide a ground plane therefore and yet be transparent to the radiation to or from said dipole elements on said one of said first and second boards.
Claim 4
Dependent Claim
195 words
An antenna array comprising: a first printed circuit board including thereon at least a first pair of dipole elements each having a given orientation; a second printed circuit board including thereon at least a second pair of dipole elements each having an orientation orthogonal to said given orientation, said second board being coextensive with and being disposed in spaced, parallel relation to said first board, said second pair of dipole elements being in a superimposed relationship with respect to said first pair of dipole elements; a conductive body coextensive with, parallel to and spaced a predetermined amount from one surface of one of said first and second boards to provide a ground plane therefore; and at least a pair of spaced, parallel conductive members each having an orientation parallel to and in a superimposed relation with a different one of said dipole elements on the other of said first and second boards and spaced from said other of said first and second boards by said predetermined amount to provide a ground plane therefore and yet be transparent to the radiation to or from said dipole elements on said one of said first and second boards.
Claim 5
Dependent Claim
64 words
An antenna array according to claim 2, further including a first balanced power division transmission line carried by said first board symmetrically coupled to each of said dipole elements of said first pair of dipole elements, and a second balanced, power division transmission line carried by said second board symmetrically coupled to each of said dipole elements of said second pair of dipole elements.
Claim 6
Dependent Claim
61 words
An antenna array according to claim 2, wherein each dipole element of said first and second pair of dipole elements includes a first conductive radiating section disposed on one surface of the associated one of said first and second boards, and a second conductive radiating section disposed on the other surface of said associated one of said first and second boards.
Claim 7
Dependent Claim
109 words
An antenna array according to claim 4, further including a symmetrical, balanced, power division transmission line network carried by each of said first and second boards symmetrically coupled to each dipole element of the associated one of said first and second pair of dipole elements for equal power distribution, each of said networks including a first conductive transmission line element disposed on said one surface of said associated one of said first and second boards connected to said first radiating section, and a second conductive transmission line element disposed on said other surface of said associated one of said first and second boards connected to said second radiating section.
Claim 8
Dependent Claim
41 words
An antenna array according to claim 2, wherein said pair of conductive members includes a third printed circuit board having thereon at least a pair of spaced, parallel conductive strips, said third board being disposed between said first and second boards.
Claim 9
Dependent Claim
48 words
An antenna array according to claim 2, wherein said pair of conductive members includes a third printed circuit board having thereon at least a pair of spaced, parallel conductive strips, said third board being disposed between said conductive body and said one of said first aNd second boards.
Claim 10
Dependent Claim
38 words
An antenna array according to claim 2, wherein said pair of conductive members includes a pair of spaced, parallel conductive ridges extending from one surface of said conductive body towards said other of said first and second boards.
Claim 11
Dependent Claim
121 words
An antenna array according to claim 2, wherein said first board includes N of said first pair of dipole elements symmetrically disposed on said first board, where N is an integer greater than one; said second board includes N of said second pair of dipole elements symmetrically disposed on said second board in a superimposed relationship with respect to said plurality of said first pair of dipole elements; and said ground plane for said other of said first and second boards include a plurality of parallel, spaced conductive members, each of said members being disposed parallel to and in a superimposed relation with all those dipole elements aligned along a given line on said other of said first and second boards.
Claim 12
Dependent Claim
225 words
An antenna array according to claim 9, further comprising a mat-strip type balanced power division transmission line network disposed on each of said first and second boards extending symmetrically and radially in two directions from adjacent the point of symmetry to provide a symmetrical energy coupling relation with the associated one of said N of said first and second pair of dipole antennas, and a combined balun and power divider coupled to each of said networks including a coaxial transmission line disposed perpendicular to the associated one of said first and second boards adjacent said point of symmetry, said coaxial line having an outer conductor and a center conductor extending through said associated one of said first and second boards to one surface thereof, a first strip conductor disposed on said one surface of said associated one of said first and second boards connected directly to and extending radially in two directions from said center conductor for connection to the inputs of said network, said first strip conductor having a given width, and a second strip conductor disposed on the other surface of said associated one of said first and second boards in a superimposed relation with said first strip conductor and connected between said outer conductor and said inputs of said network, said second strip conductor having a width greater than said given width.
Claim 13
Dependent Claim
181 words
An antenna array according to claim 10, wherein each of said transmission line networks including a third strip conductor disposed on said one surface of said associated one of said first and second boards having said given width and one end thereof coupled to one end of said first strip conductor, a fourth strip conductor disposed on said one surface of said associated one of said first and second boards having said given width and one end thereof coupled to the other end of said first strip conductor. a fifth strip conductor disposed on the other surface of said associated one of said first and second boards having said given width and one end thereof coupled to said second strip conductor, said fifth strip conductor being disposed in a superimposed relation with said third strip conductor, and a sixth strip conductor disposed on said other surface of said associated one of said first and second boards having said given width and one end thereof coupled to said second strip conductor being disposed in a superimposed relation with said fourth strip conductor.
Claim 14
Dependent Claim
74 words
An antenna according to claim 11, wherein said third and fifth strip conductors and said fourth and sixth strip conductors are symmetrically branched at predetermined locations to provide said energy coupling relation, and said third and fifth strip conductors and said fourth and sixth strip conductors each include a different predetermined width than said given width for a predetermined length at said predetermined locations to provide reflectionless enErgy transformation in said transmission line network.
Claim 15
Dependent Claim
38 words
An antenna array according to claim 9, wherein said plurality of conductive members includes a third printed circuit board having thereon a plurality of spaced, parallel strips, said third board being disposed between said first and second boards.
Claim 16
Dependent Claim
45 words
An antenna array according to claim 9, wherein said plurality of conductive members includes a third printed circuit board having thereon a plurality of spaced, parallel strips, said third board being disposed between said conductive body and said one of said first and second boards.
Claim 17
Dependent Claim
37 words
An antenna array according to claim 9, wherein said plurality of conductive members includes a plurality of spaced, parallel ridges extending from one surface of said conductive body towards said other of said first and second boards.
Claim 18
Dependent Claim
204 words
In a symmetrical antenna array having radiating elements in the form of conductive strips disposed symmetrically on a printed circuit board, a symmetrical energy coupling network for said radiating elements comprising: a mat-strip type balanced power division transmission line network disposed on said board extending symmetrically and radially in two directions from adjacent the point of symmetry of said radiating elements to provide a symmetrical energy coupling relation with said radiating elements; and a combined balun and power divider coupled to said network including a coaxial transmission line disposed perpendicular to said board adjacent said point of symmetry, said coaxial line having an outer conductor and a center conductor extending through said board to one surface thereof, a first strip conductor disposed on said one surface of said board connected directly to and extending radially in two directions from said center conductor for connection to the inputs of said network, said first strip conductor having a given width, and a second strip conductor disposed on the other surface of said board in a superimposed relation with said first strip conductor and connected between said outer conductor and said inputs of said network, said second strip conductor having a width greater than said given width.
Claim 19
Dependent Claim
204 words
In a symmetrical antenna array having radiating elements in the form of conductive strips disposed symmetrically on a printed circuit board, a symmetrical energy coupling network for said radiating elements comprising: a mat-strip type balanced power division transmission line network disposed on said board extending symmetrically and radially in two directions from adjacent the point of symmetry of said radiating elements to provide a symmetrical energy coupling relation with said radiating elements; and a combined balun and power divider coupled to said network including a coaxial transmission line disposed perpendicular to said board adjacent said point of symmetry, said coaxial line having an outer conductor and a center conductor extending through said board to one surface thereof, a first strip conductor disposed on said one surface of said board connected directly to and extending radially in two directions from said center conductor for connection to the inputs of said network, said first strip conductor having a given width, and a second strip conductor disposed on the other surface of said board in a superimposed relation with said first strip conductor and connected between said outer conductor and said inputs of said network, said second strip conductor having a width greater than said given width.
Claim 20
Dependent Claim
157 words
The symmetrical energy coupling network according to claim 16, wherein said transmission line network includes a third strip conductor disposed on said one surface of said board having said given width and one end thereof coupled to one end of said first strip conductor, a fourth strip conductor disposed on said one surface of said board having said given width and one end thereof coupled to the other end of said first strip conductor, a fifth strip conductor disposed on the other surface of said board having said given width and one end thereof coupled to said second strip conductor, said fifth strip conductor being disposed in a superimposed relation with said third strip conductor, and a sixth strip conductor disposed on said other surface of said board having said given width and one end thereof coupled to said second strip conductor, said sixth strip conductor being disposed in a superimposed relation with said fourth strip conductor.
Claim 21
Dependent Claim
77 words
The symmetrical energy coupling network according to claim 17, wherein said third and fifth strip conductors and said fourth and sixth strip conductors are symmetrically branched at predetermined locations to provide said energy coupling relation, and said third and fifth strip conductors and said fourth and sixth strip conductors each include a different predetermined width than said given width for a predetermined length at said predetermined locations to provide reflectionless energy transformation in said transmission line network.
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) | 1975-08-01 | 1976-01-31 | 1976-08-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-01 | 1980-01-31 | 1980-08-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-01 | 1984-01-31 | 1984-08-01 | $7700.00 | Window Closed / Lapsed |