Patent US3258703A successfully refreshed from Google Patents.
US3258703A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Antiferrcmagnetic parametric amplifier
Assignee: —
•
Filing: —
•
Granted: 1966-06-28
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Expires: 1983-06-28
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 16:49
CPC Classifications
H; H03; H03F; H03F7/00; H03F7/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
111 words
A PARAMETRIC AMPLIFIER COMPRISING A FIRST WAVEGUIDE SECTION ADAPTED TO RECEIVE AND PROPAGATE A MICROWAVE LOCAL OSCILLATOR PUMP FREQUENCY SIGNAL, A SECOND MICROWAVE GUIDE SECTION ADAPTED TO RECEIVE AND PROPAGATE A SIGNAL FREQEUCNY, AN ELECTROMAGNETIC CAVITY RESONANT AT THE PUMP AND SIGNAL FREQUENCIES, AND ELEMENT OF MATERIAL HAVING TWO NATURAL UNIFORM PRECESSIONAL MODES AND NO NET EXTERNAL MAGNETIC MOMENT ARRANGED IN SAID CAVITY, ONE OF SAID PRECESSIONAL MODES CORRESPONDING TO ONE OF THE RESONANT MODES OF SAID CAVITY, MEANS FOR SUPPLYING A FIXED MAGNETIC BIASING FIELD PARALLEL TO THE UNPERTURBED DIRECTION OF THE MAGNETIC MOMENTS OF SAID MATERIAL AND MEANS FOR COUPLING SAID CAVITY TO SAID FIRST AND SECOND MICROWAVE SECTIONS.
Claim 2
Dependent Claim
111 words
A PARAMETRIC AMPLIFIER COMPRISING A FIRST WAVEGUIDE SECTION ADAPTED TO RECEIVE AND PROPAGATE A MICROWAVE LOCAL OSCILLATOR PUMP FREQUENCY SIGNAL, A SECOND MICROWAVE GUIDE SECTION ADAPTED TO RECEIVE AND PROPAGATE A SIGNAL FREQEUCNY, AN ELECTROMAGNETIC CAVITY RESONANT AT THE PUMP AND SIGNAL FREQUENCIES, AND ELEMENT OF MATERIAL HAVING TWO NATURAL UNIFORM PRECESSIONAL MODES AND NO NET EXTERNAL MAGNETIC MOMENT ARRANGED IN SAID CAVITY, ONE OF SAID PRECESSIONAL MODES CORRESPONDING TO ONE OF THE RESONANT MODES OF SAID CAVITY, MEANS FOR SUPPLYING A FIXED MAGNETIC BIASING FIELD PARALLEL TO THE UNPERTURBED DIRECTION OF THE MAGNETIC MOMENTS OF SAID MATERIAL AND MEANS FOR COUPLING SAID CAVITY TO SAID FIRST AND SECOND MICROWAVE SECTIONS.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-06-27 | 1969-12-27 | 1970-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-06-27 | 1973-12-27 | 1974-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-06-27 | 1977-12-27 | 1978-06-28 | $7700.00 | Window Closed / Lapsed |