US3705364A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for generating microwaves having a generating element and variable reactance element in a cavity resonator
Assignee: Panasonic Holdings Corp
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Filing: 1969-09-29
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Granted: 1972-12-05
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Expires: 1989-09-29
Abstract
Abstract Apparatus for generating microwaves comprising a cavity resonator, a microwave generating element and a solid-state variable reactance element such as a variable capacitance diode, both of these elements being disposed within the cavity resonator. It is possible to obtain a controlled and/or a modulated microwave output from the apparatus by varying the reactance of and/or by supplying a modulating signal to the variable reactance element.
Inventors
- 👤 Masumi Takeshima
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 16:42
CPC Classifications
H; H03; H03L; H03L7/00; H03L7/02; H03L7/04; H03B; H03B9/00; H03B9/12; H03B9/14; H03B9/141; H10; H10D; H10D99/00; H10P; H10P50/00; H10P50/69; H10P50/691; H10P95/00; H03B2200/00; H03B2200/006; H03B2200/0068
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
151 words
An apparatus for generating microwaves, comprising: a cavity resonator; a generating element disposed within said resonator; a load coupled with said resonator on one side thereof; a shortcircuiting piston provided on the opposite side of said resonator from said load; a variable reactance element formed on a single substrate with said generating element and axially positioned in said resonator on the same side of generating element as said load, wherein the distance between said generating element and said variable reactance element is between three-eighths and seven-eighths wavelength of a microwave generated by said apparatus; means applying a control signal to said variable reactance element; means, including a frequency discriminator, for producing a signal representative of tHe difference between the actual output of said apparatus and a predetermined reference; means for feeding back said difference signal to said variable reactance element; and means for superimposing a modulating signal on said control signal.
Claim 2
Independent Claim
151 words
An apparatus for generating microwaves, comprising: a cavity resonator; a generating element disposed within said resonator; a load coupled with said resonator on one side thereof; a shortcircuiting piston provided on the opposite side of said resonator from said load; a variable reactance element formed on a single substrate with said generating element and axially positioned in said resonator on the same side of generating element as said load, wherein the distance between said generating element and said variable reactance element is between three-eighths and seven-eighths wavelength of a microwave generated by said apparatus; means applying a control signal to said variable reactance element; means, including a frequency discriminator, for producing a signal representative of tHe difference between the actual output of said apparatus and a predetermined reference; means for feeding back said difference signal to said variable reactance element; and means for superimposing a modulating signal on said control signal.
Claim 3
Independent Claim
152 words
An apparatus for generating microwaves, comprising: a cavity resonator; a generating element disposed within said resonator; a load coupled with said resonator on one side thereof; a short-circuiting piston provided on the opposite side of said resonator from said load; a variable reactance element formed on a single substrate with said generating element and axially positioned in said resonator on the opposite side of said generating element as said load, wherein the distance between said generating element and said variable reactance element is between three-eighths and seven-eighths wavelength of a microwave generated by said apparatus; means applying a control signal to said variable reactance element; means, including a frequency discriminator, for producing a signal representative of the difference between the actual output of said apparatus and a predetermined reference; means for feeding back said difference signal to said variable reactance element; and means for superimposing a modulating signal on said control signal.
Claim 4
Independent Claim
152 words
An apparatus for generating microwaves, comprising: a cavity resonator; a generating element disposed within said resonator; a load coupled with said resonator on one side thereof; a short-circuiting piston provided on the opposite side of said resonator from said load; a variable reactance element formed on a single substrate with said generating element and axially positioned in said resonator on the opposite side of said generating element as said load, wherein the distance between said generating element and said variable reactance element is between three-eighths and seven-eighths wavelength of a microwave generated by said apparatus; means applying a control signal to said variable reactance element; means, including a frequency discriminator, for producing a signal representative of the difference between the actual output of said apparatus and a predetermined reference; means for feeding back said difference signal to said variable reactance element; and means for superimposing a modulating signal on said control signal.
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) | 1975-12-05 | 1976-06-05 | 1976-12-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-12-05 | 1980-06-05 | 1980-12-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-12-05 | 1984-06-05 | 1984-12-05 | $7700.00 | Window Closed / Lapsed |