US5122809A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Microwave electric power receiver
Assignee: Yokowo Co Ltd
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Filing: 1991-08-23
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Granted: 1992-06-16
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Expires: 2011-08-23
Abstract
Abstract In a microwave electric power receiver, a microstrip resonator having a line length 1/2 of a wavelength of a microwave to be received is notched to be split at its longitudinally central portion into two portions. A rectification diode is interposed between notched end portions of the microstrip resonator portions to be matched therewith. The diode generates a DC power.
Inventors
- 👤 Shinichi Haruyama
- 👤 Masao Tomiyama
- 👤 Yoshikazu Kawashima
- 👤 Hiroaki Kojima
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 10:16
CPC Classifications
H; H01; H01Q; H01Q9/00; H01Q9/04; H01Q9/16; H01Q9/28; H01Q9/285; H01Q1/00; H01Q1/12; H01Q1/22; H01Q1/24; H01Q1/248
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
155 words
A microwave electric power receiver for generating a DC power from a received microwave comprising: two microstrip resonators formed on an upper surface of a planar dielectric substrate which includes a ground plate disposed on a lower surface, said microstrip resonators each having a line length 1/2 of a wavelength of the microwave to be received are arranged perpendicular to each other in a cross shape, each of said two microstrip resonators is split at a longitudinally central portion thereof into two portions, two rectification diodes are interposed respectively between the notched end portions of the corresponding microstrip resonators to be matched therewith; and wherein a choke coil is interposed between a cathode of at least one of the diodes and a positive output terminal and another choke coil is interposed between an anode of at least one of the diodes and a negative output terminal, said choke coils being formed on the dielectric substrate.
Claim 2
Dependent Claim
155 words
A microwave electric power receiver for generating a DC power from a received microwave comprising: two microstrip resonators formed on an upper surface of a planar dielectric substrate which includes a ground plate disposed on a lower surface, said microstrip resonators each having a line length 1/2 of a wavelength of the microwave to be received are arranged perpendicular to each other in a cross shape, each of said two microstrip resonators is split at a longitudinally central portion thereof into two portions, two rectification diodes are interposed respectively between the notched end portions of the corresponding microstrip resonators to be matched therewith; and wherein a choke coil is interposed between a cathode of at least one of the diodes and a positive output terminal and another choke coil is interposed between an anode of at least one of the diodes and a negative output terminal, said choke coils being formed on the dielectric substrate.
Claim 3
Dependent Claim
90 words
A microwave electric power receiver accordingly to claim 1, wherein said two diodes are connected in parallel with each other such that a first branch between positive and negative output terminals includes a choke coil, a microstrip resonator portion, a diode, another microstrip resonator portion and another choke coil connected in series, and a second branch connected in parallel with the first branch between positive and negative output terminals includes a choke coil, a microstrip resonator portion, a diode, another microstrip resonator portion and another choke coil connected in series.
Claim 4
Dependent Claim
59 words
A microwave electric power receiver according to claim 1, wherein said two diodes are connected in series such that between positive and negative output terminals are connected in series a choke coil, a microstrip resonator portion, a diode, another microstrip resonator portion, another choke coil, another microstrip resonator portion, another diode, another microstrip resonator portion, and another choke coil.
Claim 5
Dependent Claim
29 words
A microwave electric power receiver according to claim 1, wherein said notched end portions of said microstrip resonator are tapered toward distal ends thereof to match with said diode.
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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) | 1995-06-16 | 1995-12-16 | 1996-06-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-06-16 | 1999-12-16 | 2000-06-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-06-16 | 2003-12-16 | 2004-06-16 | $7700.00 | Window Closed / Lapsed |