US3718935A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dual circularly polarized phased array antenna
Assignee: TDK Micronas GmbH
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Filing: 1971-02-03
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Granted: 1973-02-27
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Expires: 1991-02-03
Abstract
Abstract A phased array antenna is provided by stacking two PC boards in a superimposed relationship above the base of a housing for the antenna. Each of these PC boards contain therein a symmetrical arrangement of photo etched or printed mat-strip power division networks and a plurality of radial arrangements each including a plurality of photo etched or printed mat-strip dipole elements having a given angular relationship therebetween. The dipole elements of the radial arrangements on one PC board are orthogonally related to the dipole elements of the radial arrangements on the other PC board. RF switching means control the orthogonally related dipole elements of each of the PC boards that are connected to the power division network so that the phase of the dual circularly polarized radiation pattern can be controlled in quantized steps determined by said given angular relation. The ground plane for the lower PC board is the housing and the ground plane for the radial arrangements of dipole elements on the upper PC board is provided by parallel, space conductive members in a superimposed, parallel relationship with each of the radial arrangements. Each of the power division networks is fed by a double ended balun. The two baluns are in turn fed from a quadrature hybrid.
Inventors
- 👤 J Ranghelli
- 👤 E Perrotti
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 05:14
CPC Classifications
H; H01; H01Q; H01Q3/00; H01Q3/24; H01Q25/00; H01Q25/001; H01Q9/00; H01Q9/04; H01Q9/06; H01Q9/065
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
187 words
A dual circularly polarized phased array antenna comprising: a plurality of pairs of orthogonally related linearly polarized dipoles, each of said pairs of orthogonally related dipoles being disposed at a given angle with respect to each other and each of said pairs of orthogonally related dipoles having a dual circularly polarized radiation pattern; switching means coupled to each of said pairs of orthogonally related dipoles to control which of said pairs of orthogonally related dipoles are the active ones to enable phase control of said radiation pattern by quantized steps equal to said given angle; and a radio frequency energy transmission line having an end in juxtaposition to said plurality of said pairs of orthogonally related dipoles and said switching means; each dipole of said pairs of orthogonally related dipoles including two spaced section; said plurality of said pairs of orthogonally related dipoles being disposed such that said spaced sections are spaced from and radially extending from said end of said transmission line; and said switching means including a radio frequency switch means coupled between each of said spaced sections and said end of said transmission line.
Claim 2
Dependent Claim
187 words
A dual circularly polarized phased array antenna comprising: a plurality of pairs of orthogonally related linearly polarized dipoles, each of said pairs of orthogonally related dipoles being disposed at a given angle with respect to each other and each of said pairs of orthogonally related dipoles having a dual circularly polarized radiation pattern; switching means coupled to each of said pairs of orthogonally related dipoles to control which of said pairs of orthogonally related dipoles are the active ones to enable phase control of said radiation pattern by quantized steps equal to said given angle; and a radio frequency energy transmission line having an end in juxtaposition to said plurality of said pairs of orthogonally related dipoles and said switching means; each dipole of said pairs of orthogonally related dipoles including two spaced section; said plurality of said pairs of orthogonally related dipoles being disposed such that said spaced sections are spaced from and radially extending from said end of said transmission line; and said switching means including a radio frequency switch means coupled between each of said spaced sections and said end of said transmission line.
Claim 3
Dependent Claim
18 words
An antenna according to claim 1, wherein each of said radio frequency switch means includes a semiconductor device.
Claim 4
Dependent Claim
16 words
An antenna according to claim 2, wherein each of said semiconductor device includes a PIN diode.
Claim 5
Dependent Claim
222 words
A dual circularly polarized phased array antenna comprising: a plurality of pairs of orthogonally related linearly polarized dipoles, each of said pairs of orthogonally related dipoles being disposed at a given angle with respect to each other and each of said pairs of orthogonally related dipoles having a dual circularly polarized radiation pattern; switching means coupled to each of said pairs of orthogonally related dipoles to control which of said pairs of orthogonally related dipoles are the active ones to enable phase control of said radiation pattern by quantized steps equal to said given angle; a first printed circuit board containing thereon in printed circuit form one dipole of each of said plurality of said pairs of orthogonally related dipoles and a first associated portion of said switching means; a second printed circuit board containing thereon in printed circuit form the other dipole of each of said plurality of said pairs of orthogonally related dipoles and a second associated portion of said switching means; a first ground plane associated with said first printed circuit board; and a second ground plane associated with said second printed circuit board; the contents of said first and second printed circuit board and said first and second ground planes being disposed in a parallel, stacked, non-interfering relationship to provide said dual circularly polarized phase controlled radiation pattern.
Claim 6
Dependent Claim
222 words
A dual circularly polarized phased array antenna comprising: a plurality of pairs of orthogonally related linearly polarized dipoles, each of said pairs of orthogonally related dipoles being disposed at a given angle with respect to each other and each of said pairs of orthogonally related dipoles having a dual circularly polarized radiation pattern; switching means coupled to each of said pairs of orthogonally related dipoles to control which of said pairs of orthogonally related dipoles are the active ones to enable phase control of said radiation pattern by quantized steps equal to said given angle; a first printed circuit board containing thereon in printed circuit form one dipole of each of said plurality of said pairs of orthogonally related dipoles and a first associated portion of said switching means; a second printed circuit board containing thereon in printed circuit form the other dipole of each of said plurality of said pairs of orthogonally related dipoles and a second associated portion of said switching means; a first ground plane associated with said first printed circuit board; and a second ground plane associated with said second printed circuit board; the contents of said first and second printed circuit board and said first and second ground planes being disposed in a parallel, stacked, non-interfering relationship to provide said dual circularly polarized phase controlled radiation pattern.
Claim 7
Dependent Claim
60 words
An antenna according to claim 4, wherein said first ground plane includes the metallic bottom wall of the housing for said antenna; and said second ground plane includes a third printed circuit board containing thereon a metallic member superimposed with respect to said other dipoles, said third printed circuit board being disposed between said first and second printed circuit board.
Claim 8
Dependent Claim
62 words
An antenna according to claim 4, wherein said first ground plane includes the metallic bottom wall of the housing of said antenna; and said second ground plane includes a third printed circuit board containing thereon a metallic member superimposed with respect to said other dipoles, said third printed circuit board being disposed between said bottom wall and said first printed circuit board.
Claim 9
Dependent Claim
44 words
An antenna according to claim 4, wherein said first ground plane includes the metallic bottom wall of the housing of said antenna; and said second ground plane includes a raised metallic member disposed on said bottom wall superimposed with respect to said other dipoles.
Claim 10
Dependent Claim
24 words
An antenna according to claim 4, wherein said dipoles disposed on each of said first and second printed circuit boards have a mat-strip configuration.
Claim 11
Dependent Claim
213 words
An antenna according to claim 4, further including a first printed circuit radio frequency energy transmission line section disposed on said first printed circuit board, said first section having an end in juxtaposition to each of said one dipoles and said first portion of said switching means; and a second printed circuit radio frequency energy transmission line second disposed on said second printed circuit board, said first section having an end in juxtaposition to each of said other dipoles and said second portion of said switching means; and wherein each of said one dipoles including two spaced sections disposed in spaced relation with an extending radially from said end of said first transmission line section; each of said other dipoles including two spaced sections disposed in spaced relation with and extending radially from said end of said second transmission line section; said first portion of said switching means includes a first radio frequency switch means coupled between each of said spaced sections of each of said one dipoles and said end of said first transmission line section; and said second portion of said switching means includes a second radio frequency switch means coupled between each of said spaced sections of each of said other dipoles and said end of second transmission line section.
Claim 12
Dependent Claim
45 words
An antenna according to claim 9, wherein said first and second transmission line sections have a mat-strip configuration; said spaced sections of each of said one dipoles have a mat-strip configuration; and said spaced sections of each of said other dipoles have a mat-strip configuration.
Claim 13
Dependent Claim
164 words
An antenna according to claim 9, wherein the radial relationship between said two spaced sections of each of said one dipoles and said end of said first transmission line section and said first portion of said switching means form a first radial arrangement; the radial relationship between said two spaced sections of each of said other dipoles and said end of said second transmission line section and said second portion of said switching means form a second radial arrangement; said first printed circuit board includes a plurality of said first radial arrangements symmetrically disposed thereon; and said second printed circuit board includes a plurality of said second radial arrangement symmetrically disposed thereon; and further including a first radio frequency energy distribution system coupled to said first transmission line section of each of said plurality of said first radial arrangement; and a second radio frequency energy distribution system coupled to said second transmission line section of each of said plurality of said second radial arrangement.
Claim 14
Dependent Claim
39 words
An antenna according to claim 11, wherein both said first and second distribution systems include interconnected printed circuit radio frequency transmission lines of the mat-strip type disposed on the associated one of said first and second printed circuit boards.
Claim 15
Dependent Claim
51 words
An antenna according to claim 11, wherein each of said first and second distribution systems include interconnected radio frequency transmission lines of the printed circuit mat-strip type disposed on the associated one of said first and second printed circuit boards, and a double ended balun coupled to said interconnected transmission lines.
Claim 16
Dependent Claim
17 words
An antenna according to claim 13, further including a quadrature hybrid coupled to said double ended baluns.
Claim 17
Dependent Claim
43 words
An antenna according to claim 14, wherein each of said first and second switch means includes a semiconductor device; and further including a source of switching voltage selectively coupled to each of said semiconductor devices to control the phase of said radiation pattern.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-02-27 | 1976-08-28 | 1977-02-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-02-27 | 1980-08-28 | 1981-02-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-02-27 | 1984-08-28 | 1985-02-27 | $7700.00 | Window Closed / Lapsed |