Patent US6181291B1 successfully refreshed from Google Patents.
US6181291B1
Expired / Lapsed
US
⏱️ 0.0 years remaining
Standing wave antenna array of notch dipole shunt elements
Assignee: Raytheon Co
•
Filing: 1999-03-24
•
Granted: 2001-01-30
•
Expires: 2019-03-24
Abstract
Abstract A compact high-performance antenna. The antenna includes a waveguide ( 16 ) for providing or receiving electromagnetic energy. A feed circuit ( 18, 106, 108, 110 ) provides or receives the electromagnetic energy to or from the waveguide ( 16 ). A radiating circuit ( 112, 114 ) provides or receives the electromagnetic energy to or from the feed circuit ( 18 ). One or more notches ( 120 ) in the feed circuit ( 108, 110 ) compensate for insertion phase errors in the electromagnetic energy. One or more tabs ( 18 ) in the radiating circuit ( 112, 114 ) compensate for radiation phase errors in the electromagnetic energy. In a specific embodiment, the antenna is a dipole antenna and includes an array of dipole cards. The radiating circuit ( 112, 114 ) includes first ( 112 ) and second ( 114 ) radiating circuits included in each of the dipole cards ( 14 ). The first ( 112 ) and second ( 114 ) radiating circuits include a plurality of quarter-wave stripline transformers ( 24 ). The transformers ( 24 ) include one more rectangular tabs ( 18 ) for tuning out radiation phase errors, capacitance effects, and/or junction effects. The feed circuit ( 108, 110 ) includes v-shaped notches ( 120 ) near the bases of the transformers that compensate for insertion phase errors. In the illustrative embodiment, the transformers ( 24 ) are arranged so that an equivalent circuit of the radiating circuit ( 112, 114 ) appears shunt to an equivalent circuit of the feed circuit ( 18, 106, 108, 110 ). Each transformer ( 24 ) is connected to a slotline radiating element ( 116 ). The magnitude of the transmitted or received electromagnetic energy is a function of the sizes of the transformers ( 24 ). The feed waveguide ( 16 ) includes indentations for inductive tuning.
Inventors
- 👤 Joseph M. Anderson
- 👤 Pyong K Park
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 08:06
CPC Classifications
H; H01; H01Q; H01Q13/00; H01Q13/10; H01Q13/106; H01Q21/00; H01Q21/0006; H01Q21/0037; H01Q21/06; H01Q21/061; H01Q21/064; H01Q3/00; H01Q3/26
Claims Analysis
Total Claims: 31
Claim 1
Independent Claim
70 words
A compact high-performance antenna comprising: waveguide means for providing or receiving electromagnetic energy; feed means for providing or receiving said electromagnetic energy to or from said waveguide means; radiating means for providing or receiving said electromagnetic energy to or from said feed means; insertion phase means for compensating for insertion phase errors in said electromagnetic energy; and radiation phase means for compensating for radiation phase errors in said electromagnetic energy.
Claim 2
Dependent Claim
70 words
A compact high-performance antenna comprising: waveguide means for providing or receiving electromagnetic energy; feed means for providing or receiving said electromagnetic energy to or from said waveguide means; radiating means for providing or receiving said electromagnetic energy to or from said feed means; insertion phase means for compensating for insertion phase errors in said electromagnetic energy; and radiation phase means for compensating for radiation phase errors in said electromagnetic energy.
Claim 3
Dependent Claim
12 words
The invention of claim 1 wherein said antenna is a dipole antenna.
Claim 4
Dependent Claim
14 words
The invention of claim 2 wherein said antenna includes an array of dipole cards.
Claim 5
Dependent Claim
22 words
The invention of claim 3 wherein said radiating means includes first and second radiating circuits included in each of said dipole cards.
Claim 6
Dependent Claim
17 words
The invention of claim 3 wherein said first and second radiating circuits include a plurality of transformers.
Claim 7
Dependent Claim
11 words
The invention of claim 5 wherein said transformers are quarter-wave transformers.
Claim 8
Dependent Claim
11 words
The invention of claim 5 wherein said transformers are stripline transformers.
Claim 9
Dependent Claim
29 words
The invention of claim 5 wherein one or more of said plurality of transformers includes one more tabs for tuning out radiation phase errors, capacitance effects, and/or junction effects.
Claim 10
Dependent Claim
15 words
The invention of claim 8 wherein said one or more tabs is two rectangular tabs.
Claim 11
Dependent Claim
23 words
The invention of claim 5 wherein said feed means includes notches near the bases of said transformers for compensating for insertion phase errors.
Claim 12
Dependent Claim
29 words
The invention of claim 5 wherein said transformers are arranged so that an equivalent circuit of said radiating means appears shunt to an equivalent circuit of said feed means.
Claim 13
Dependent Claim
14 words
The invention of claim 5 wherein said feed means includes a stripline feed circuit.
Claim 14
Dependent Claim
14 words
The invention of claim 12 wherein said transformers are connected to said stripline circuit.
Claim 15
Dependent Claim
24 words
The invention of claim 5 wherein said feed means includes one or more slotline circuit elements connected to one or more of said transformers.
Claim 16
Dependent Claim
16 words
The invention of claim 1 wherein said waveguide means includes a feed waveguide and a probe.
Claim 17
Dependent Claim
15 words
The invention of claim 15 wherein said feed waveguide is a standing wave waveguide feed.
Claim 18
Dependent Claim
15 words
The invention of claim 15 wherein said feed waveguide is an iris excited slotted waveguide.
Claim 19
Dependent Claim
14 words
The invention of claim 15 wherein said feed waveguide includes indentations for inductive tuning.
Claim 20
Dependent Claim
17 words
The invention of claim 1 further including gain means for controlling the magnitude of said electromagnetic energy.
Claim 21
Dependent Claim
27 words
The invention of claim 19 wherein said gain means includes one or more transformers, said magnitude a function of the sizes of said one or more transformers.
Claim 22
Dependent Claim
15 words
The invention of claim 1 wherein said radiation phase means includes one or more transformers.
Claim 23
Dependent Claim
22 words
The invention of claim 21 wherein said radiation phase means further includes one or more tabs in said one or more transformers.
Claim 24
Dependent Claim
26 words
The invention of claim 22 wherein said one or more tabs are rectangular and located in a side or sides of said one or more transformers.
Claim 25
Dependent Claim
19 words
The invention of claim 1 wherein said insertion phase means includes one or more notches in said feed means.
Claim 26
Dependent Claim
27 words
The invention of claim 24 wherein said notches are v-shaped and located near a base or bases of one or more transformers included in said radiation means.
Claim 27
Dependent Claim
85 words
A compact high-performance antenna comprising: one or more waveguides for providing input electromagnetic energy; a feed circuit for receiving said input electromagnetic energy and providing feed electromagnetic energy in response thereto; one or more radiating elements connected to said feed circuit, said one or more radiating elements including one or more transformers; and one or more tuning tabs located in the sides of said one or more transformers for adjusting the phase of said feed electromagnetic energy and radiating in-phase electromagnetic energy in response thereto.
Claim 28
Dependent Claim
85 words
A compact high-performance antenna comprising: one or more waveguides for providing input electromagnetic energy; a feed circuit for receiving said input electromagnetic energy and providing feed electromagnetic energy in response thereto; one or more radiating elements connected to said feed circuit, said one or more radiating elements including one or more transformers; and one or more tuning tabs located in the sides of said one or more transformers for adjusting the phase of said feed electromagnetic energy and radiating in-phase electromagnetic energy in response thereto.
Claim 29
Dependent Claim
17 words
The invention of claim 26 further including one or more tuning notches located in said feed circuit.
Claim 30
Dependent Claim
62 words
A compact high-performance antenna comprising: a waveguide; a probe connected to said waveguide; a feed circuit connected to said waveguide via said probe; a radiating element connected to said feed circuit, said radiating element connected to a transformer; a tuning tab located in a side of said transformer; and a tuning notch in said feed circuit near the base of said transformer.
Claim 31
Dependent Claim
62 words
A compact high-performance antenna comprising: a waveguide; a probe connected to said waveguide; a feed circuit connected to said waveguide via said probe; a radiating element connected to said feed circuit, said radiating element connected to a transformer; a tuning tab located in a side of said transformer; and a tuning notch in said feed circuit near the base of said transformer.
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) | 2004-01-30 | 2004-07-31 | 2005-01-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2008-01-30 | 2008-07-31 | 2009-01-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2012-01-30 | 2012-07-31 | 2013-01-30 | $7700.00 | Window Closed / Lapsed |