Patent US5708444A successfully refreshed from Google Patents.
US5708444A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multipatch antenna with ease of manufacture and large bandwidth
Assignee: Technology Foundation STW
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Filing: 1994-09-27
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Granted: 1998-01-13
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Expires: 2014-09-27
Abstract
Abstract A multipatch antenna including radiating patches (2) positioned on a dielectric sheet (1). The patches (2) are capacitively fed by probes (7) ending in the dielectric sheet (1) near the patches (2). By positioning the probes (7) near selected edges of the radiating patches (2), a selected polarization direction of the radiation field can be realized. By positioning several probes (7) near a radiating patch (2), a radiation field with an adjustable polarization direction or a radiation field with an extremely low cross-polarization can be obtained.
Inventors
- 👤 Arthur Johannes Hendrikus Pouwels
- 👤 Adrianus Bernardus Smolders
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 09:45
CPC Classifications
H; H01; H01Q; H01Q21/00; H01Q21/06; H01Q21/061; H01Q21/065; H01Q9/00; H01Q9/04; H01Q9/0407; H01Q9/045; H01Q9/0457
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
131 words
A multipatch antenna comprising: an array of at least substantially equal radiators, positioned on one side of a dielectric sheet; a conductive ground plane positioned on the other side of the dielectric sheet; feeding means positioned near the ground plane on a side facing away from the dielectric sheet; and capacitive coupling means incorporated between the feeding means and the radiators for energizing the radiators; wherein the radiators each consist of one single radiating patch, positioned on an outer surface of the dielectric sheet and the capacitive coupling means comprise constant diameter conducting probes, on one side connected to the feeding means and on the other side ending in the dielectric sheet near the radiating patch, such that the ends of the conducting probes are completely embedded in the dielectric sheet.
Claim 2
Dependent Claim
131 words
A multipatch antenna comprising: an array of at least substantially equal radiators, positioned on one side of a dielectric sheet; a conductive ground plane positioned on the other side of the dielectric sheet; feeding means positioned near the ground plane on a side facing away from the dielectric sheet; and capacitive coupling means incorporated between the feeding means and the radiators for energizing the radiators; wherein the radiators each consist of one single radiating patch, positioned on an outer surface of the dielectric sheet and the capacitive coupling means comprise constant diameter conducting probes, on one side connected to the feeding means and on the other side ending in the dielectric sheet near the radiating patch, such that the ends of the conducting probes are completely embedded in the dielectric sheet.
Claim 3
Dependent Claim
30 words
The multipatch antenna as claimed in claim 1, wherein the ground plane is provided with apertures at the location of the radiating patches to allow the passage of the probes.
Claim 4
Dependent Claim
29 words
The multipatch antenna as claimed in claim 2, wherein the probes end near selected edges of the radiating patches for generating a radiation pattern with a selected polarization direction.
Claim 5
Dependent Claim
26 words
The multipatch antenna as claimed in claim 3, wherein for each radiating patch, two probes are provided, both ending near opposite edges of the radiating patch.
Claim 6
Dependent Claim
22 words
The multipatch antenna as claimed in claim 4, wherein the feeding means are arranged for feeding the two probes in opposite phases.
Claim 7
Dependent Claim
20 words
The multipatch antenna as claimed in claim 5, wherein the antenna comprises a conformal array on a curved ground plane.
Claim 8
Dependent Claim
20 words
The multipatch antenna as claimed in claim 4, wherein the antenna comprises a conformal array on a curved ground plane.
Claim 9
Dependent Claim
20 words
The multipatch antenna as claimed in claim 3, wherein the antenna comprises a conformal array on a curved ground plane.
Claim 10
Dependent Claim
51 words
The multipatch antenna as claimed in claim 3, wherein for each radiating patch, a first probe is provided for generating a radiation pattern with a first polarization direction and a second probe is provided for generating a second polarization direction which is at least substantially perpendicular to the first polarization direction.
Claim 11
Dependent Claim
62 words
The multipatch antenna as claimed in claim 3, wherein for each radiating patch, a first pair of probes is provided for generating a radiation pattern with a first polarization direction and a second pair of probes is provided for generating a radiation pattern with a second polarization direction, the second polarization direction being at least substantially perpendicular to the first polarization direction.
Claim 12
Dependent Claim
20 words
The multipatch antenna as claimed in claim 2, wherein the antenna comprises a conformal array on a curved ground plane.
Claim 13
Dependent Claim
20 words
The multipatch antenna as claimed in claim 1 wherein the antenna comprises a conformal array on a curved ground plane.
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) | 2001-01-12 | 2001-07-14 | 2002-01-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-01-12 | 2005-07-14 | 2006-01-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-01-12 | 2009-07-14 | 2010-01-13 | $7700.00 | Window Closed / Lapsed |