US5712643A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Planar microstrip Yagi Antenna array
Assignee: Laird Technologies Inc
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Filing: 1995-12-05
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Granted: 1998-01-27
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Expires: 2015-12-05
Abstract
Abstract A multi-element directional antenna and process for making same are described. The antenna comprises a lightweight dielectric substrate having an array of parasitic elements disposed on the substrate. A printed circuit board having a ground plane on one side thereof, and a driven element and phasing means comprising a hybrid (magic-or-twin) tee junction on the other side thereof, disposed coplanar with the parasitic elements and the substrate. The multi-element directional antenna, may be formed using low labor cost manufacturing process such as stamping and laminating, and additive and/or subtractive (i.e. etching) techniques.
Inventors
- 👤 James M. Skladany
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 15:17
CPC Classifications
H; H01; H01Q; H01Q19/00; H01Q19/28; H01Q19/30; H01Q1/00; H01Q1/36; H01Q1/38; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49016; Y10T29/49018; Y10T29/49117; Y10T29/49124; Y10T29/4913; Y10T29/49144
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
108 words
A multi-element directional antenna comprising: a first dielectric substrate; a metallic foil forming an array of a parasitic elements affixed to a surface of said first dielectric substrate; a second dielectric substrate smaller in plan than said first dielectric substrate and having a ground plane reflector on one side thereof, and a driven element and phasing means comprising a hybrid junction on the other side thereof, affixed to said surface of said first dielectric substrate with said ground plane reflector side facing said surface of said first dielectric substrate, and, said second dielectric substrate being disposed such that said driven element is substantially parallel to said parasitic elements.
Claim 2
Dependent Claim
108 words
A multi-element directional antenna comprising: a first dielectric substrate; a metallic foil forming an array of a parasitic elements affixed to a surface of said first dielectric substrate; a second dielectric substrate smaller in plan than said first dielectric substrate and having a ground plane reflector on one side thereof, and a driven element and phasing means comprising a hybrid junction on the other side thereof, affixed to said surface of said first dielectric substrate with said ground plane reflector side facing said surface of said first dielectric substrate, and, said second dielectric substrate being disposed such that said driven element is substantially parallel to said parasitic elements.
Claim 3
Dependent Claim
45 words
A multi-element directional antenna as claimed in claim 1, and further comprising a source feed line affixed to said second dielectric substrate, said source feed line having a ground wire attached to said ground plane reflector and a signal wire attached to said phasing means.
Claim 4
Dependent Claim
39 words
A multi-element directional antenna as claimed in claim 1, wherein said second dielectric substrate comprises a double sided printed circuit board, and wherein the ground plane reflector, said phasing means, and said driven element are formed by subtractive techniques.
Claim 5
Dependent Claim
39 words
A multi-element directional antenna as claimed in claim 1, wherein said second dielectric substrate comprises a double sided printed circuit board, and wherein the ground plane reflector, said phasing means, and said driven element are formed by additive techniques.
Claim 6
Dependent Claim
33 words
A multi-element directional antenna as claimed in claim 1, wherein said second dielectric substrate is affixed to said first dielectric substrate adjacent one end thereof, overlying in part one end of said array.
Claim 7
Dependent Claim
16 words
A multi-element directional antenna as claimed in claim 1, wherein said array is formed by stamping.
Claim 8
Dependent Claim
16 words
A multi-element directional antenna as claimed in claim 1, wherein said array is formed by etching.
Claim 9
Dependent Claim
27 words
A multi-element directional antenna as claimed in claim 1, wherein said array and said second dielectric substrate are affixed to said first dielectric substrate by adhesive means.
Claim 10
Dependent Claim
17 words
A multi-element directional antenna as claimed in claim 8, wherein said adhesive means comprises double-sided adhesive tape.
Claim 11
Dependent Claim
18 words
A multi-element directional antenna as claimed in claim 1, wherein said first dielectric substrate comprises rigid foam board.
Claim 12
Dependent Claim
18 words
A multi-element directional antenna as claimed in claim 1, wherein said phasing means comprises a magic-or-twin tee junction.
Claim 13
Dependent Claim
18 words
A multi-element directional antenna as claimed in claim 1, wherein said metallic foil comprises a metal/dielectric film laminate.
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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) | 2001-01-26 | 2001-07-28 | 2002-01-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-01-26 | 2005-07-28 | 2006-01-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-01-26 | 2009-07-28 | 2010-01-27 | $7700.00 | Window Closed / Lapsed |