US5220334A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multifrequency antenna, useable in particular for space telecommunications
Assignee: Alcatel Espace Industries SA
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Filing: 1989-02-13
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Granted: 1993-06-15
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Expires: 2009-02-13
Abstract
Abstract The present invention relates to a multifrequency antenna comprising a microstrip patch first antenna (10, 11, 12) operating at one or more frequencies, and a second antenna (17) disposed in front of the antenna and using the same radiating surface and operating at a different frequency. The invention is applicable, in particular, to space telecommunications.
Inventors
- 👤 Gerard Raguenet
- 👤 Regis Lenormand
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 23:56
CPC Classifications
H; H01; H01Q; H01Q1/00; H01Q1/36; H01Q1/362; H01Q21/00; H01Q21/28; H01Q5/00; H01Q5/40; H01Q5/45; H01Q9/00; H01Q9/04; H01Q9/0407; H01Q9/16; H01Q9/20
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
144 words
A multifrequency antenna structure comprising: a microstrip patch first antenna (10, 11, 12) including a radiating surface (10) and a ground plane (11) and operating at one frequency, and a separately fed, wire type, dipole, second antenna (17) disposed in front of the first antenna radiating surface and said ground plane, and operating at a second different frequency, and wherein the first antenna (10, 11, 12) comprises a dielectric substrate (12) on said ground plane (11) and a metal top conductor (10) deposited on said dielectric substrate forming said radiating surface, a through hole passes through said dielectric substrate and the center of symmetry of said metal top conductor, a feedine for said wire type, dipole, second antenna passes through said first antenna via said through hole (15) and wherein the ground plane (11) of the first antenna is parallel to said second antenna.
Claim 2
Dependent Claim
144 words
A multifrequency antenna structure comprising: a microstrip patch first antenna (10, 11, 12) including a radiating surface (10) and a ground plane (11) and operating at one frequency, and a separately fed, wire type, dipole, second antenna (17) disposed in front of the first antenna radiating surface and said ground plane, and operating at a second different frequency, and wherein the first antenna (10, 11, 12) comprises a dielectric substrate (12) on said ground plane (11) and a metal top conductor (10) deposited on said dielectric substrate forming said radiating surface, a through hole passes through said dielectric substrate and the center of symmetry of said metal top conductor, a feedine for said wire type, dipole, second antenna passes through said first antenna via said through hole (15) and wherein the ground plane (11) of the first antenna is parallel to said second antenna.
Claim 3
Dependent Claim
29 words
A multifrequency structure antenna according to claim 1, characterized in that the second antenna is fed with a coaxial cable (16) which terminates in said dipole, second antenna (17).
Claim 4
Dependent Claim
23 words
A multifrequency structure antenna according to claims 1 or 2, wherein the first antenna top conductor (10, 11, 12) occupies a flat plane.
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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) | 1996-06-14 | 1996-12-14 | 1997-06-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-06-14 | 2000-12-14 | 2001-06-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-06-14 | 2004-12-14 | 2005-06-15 | $7700.00 | Window Closed / Lapsed |