US5218374A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Power beaming system with printer circuit radiating elements having resonating cavities
Assignee: BAE Systems Information and Electronic Systems Integration Inc
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Filing: 1989-10-10
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Granted: 1993-06-08
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Expires: 2009-10-10
Abstract
Abstract A system and method for "power beaming" energy from a source at high frequencies and rectifying such energy to provide a source of DC energy is disclosed. The system operates at a frequency of at least 10 GHz and incorporates a rectenna array having a plurality of rectenna structures that utilize circuit elements formed with microstrip circuit techniques. Each rectenna element is associated with a resonating cavity structure.
Inventors
- 👤 Peter Koert
- 👤 James T. Cha
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 19:03
CPC Classifications
H; H01; H01Q; H01Q1/00; H01Q1/12; H01Q1/22; H01Q1/24; H01Q1/248; H01Q21/00; H01Q21/06; H01Q21/061; H01Q21/065; Y; Y10; Y10S; Y10S343/00; Y10S343/02
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
101 words
A rectenna array including at least one rectenna structure, comprising: a.) a top layer containing a top and bottom surface on which conductive coating is deposited, said bottom surface conductive coating being deposited to form an antenna, and said top surface conductive coating being formed to include a hole to allow RF energy to pass to said antenna; b.) a diode connected to said antenna; and c.) a resonating cavity structure containing at least one resonating cavity, wherein said resonating cavity structure is located adjacent said bottom surface and said resonating cavity is aligned with said hole in said top surface.
Claim 2
Dependent Claim
101 words
A rectenna array including at least one rectenna structure, comprising: a.) a top layer containing a top and bottom surface on which conductive coating is deposited, said bottom surface conductive coating being deposited to form an antenna, and said top surface conductive coating being formed to include a hole to allow RF energy to pass to said antenna; b.) a diode connected to said antenna; and c.) a resonating cavity structure containing at least one resonating cavity, wherein said resonating cavity structure is located adjacent said bottom surface and said resonating cavity is aligned with said hole in said top surface.
Claim 3
Dependent Claim
22 words
A rectenna array as claimed in claim 1, wherein said resonating cavity structure comprises a cavity substrate made of a conductive material.
Claim 4
Dependent Claim
37 words
A rectenna array as claimed in claim 1, wherein said resonating cavity structure comprises a cavity substrate having said resonating cavity formed therein, and a conductive coating applied over substantially the entire surface of said resonating cavity.
Claim 5
Dependent Claim
24 words
A rectenna array as claimed in claim 1, wherein said resonating cavity structure comprises a cavity substrate top connected to a cavity substrate bottom.
Claim 6
Dependent Claim
23 words
A rectenna array as claimed in claim 1, wherein an insulating layer is provided between said top layer and said resonating cavity structure.
Claim 7
Dependent Claim
22 words
A rectenna array as claimed in claim 1, wherein said resonating cavity structure comprises a resonating canister attached to said top layer.
Claim 8
Dependent Claim
21 words
A rectenna array as claimed in claim 1, wherein said antenna comprises a single dipole to receive linearly polarized RF energy.
Claim 9
Dependent Claim
21 words
A rectenna array as claimed in claim 1, wherein said antenna comprises a cross dipole to receive circularly polarized RF energy.
Claim 10
Dependent Claim
16 words
A rectenna array as claimed in claim 1, wherein said antenna comprises a bow tie antenna.
Claim 11
Dependent Claim
15 words
A rectenna array as claimed in claim 1, wherein said antenna comprises a V-line probe.
Claim 12
Dependent Claim
15 words
A rectenna array as claimed in claim 1, wherein said antenna comprises a cross-line probe.
Claim 13
Dependent Claim
16 words
A rectenna array as claimed in claim 1, wherein said antenna comprises a straight line probe.
Claim 14
Dependent Claim
15 words
A rectenna array as claimed in claim 1, wherein said antenna comprises a loop probe.
Claim 15
Dependent Claim
114 words
A rectenna array including at least one rectenna structure, comprising: a) a top layer containing a top and bottom surface on which conductive coating is deposited, said bottom surface conductive coating being deposited to form an antenna, and said top surface conductive coating being formed to include a hole to allow RF energy to pass to said antenna; b) a diode connected to said antenna; and c) a resonating cavity structure containing at least one resonating cavity, wherein said resonating cavity structure is located adjacent said bottom surface and said resonating cavity is aligned with said hole in said top surface, and wherein said top layer includes a focus element formed within said hole.
Claim 16
Dependent Claim
114 words
A rectenna array including at least one rectenna structure, comprising: a) a top layer containing a top and bottom surface on which conductive coating is deposited, said bottom surface conductive coating being deposited to form an antenna, and said top surface conductive coating being formed to include a hole to allow RF energy to pass to said antenna; b) a diode connected to said antenna; and c) a resonating cavity structure containing at least one resonating cavity, wherein said resonating cavity structure is located adjacent said bottom surface and said resonating cavity is aligned with said hole in said top surface, and wherein said top layer includes a focus element formed within said hole.
Claim 17
Dependent Claim
24 words
A rectenna array as claimed in claim 14, wherein a feed line connected to the antenna forms a low pass filter and DC bus.
Claim 18
Dependent Claim
124 words
A rectenna array including at least one rectenna structure, comprising: a) a top layer containing a top and bottom surface on which conductive coating is deposited, said bottom surface conductive coating being deposited to form an antenna, and said top surface conductive coating being formed to include a hole to allow RF energy to pass to said antenna; b) a diode connected to said antenna; and c) a resonating cavity structure containing at least one resonating cavity, wherein said resonating cavity structure is located adjacent said bottom surface and said resonating cavity is aligned with said hole in said top surface, and wherein said resonating cavity structure further comprises a resonating canister attached to said top layer, said canister having no surrounding lower substrate.
Claim 19
Dependent Claim
124 words
A rectenna array including at least one rectenna structure, comprising: a) a top layer containing a top and bottom surface on which conductive coating is deposited, said bottom surface conductive coating being deposited to form an antenna, and said top surface conductive coating being formed to include a hole to allow RF energy to pass to said antenna; b) a diode connected to said antenna; and c) a resonating cavity structure containing at least one resonating cavity, wherein said resonating cavity structure is located adjacent said bottom surface and said resonating cavity is aligned with said hole in said top surface, and wherein said resonating cavity structure further comprises a resonating canister attached to said top layer, said canister having no surrounding lower substrate.
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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) | 1996-06-07 | 1996-12-07 | 1997-06-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-06-07 | 2000-12-07 | 2001-06-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-06-07 | 2004-12-07 | 2005-06-08 | $7700.00 | Window Closed / Lapsed |