US3777271A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Generation of microwave frequency combs with narrow line spacing
Assignee: Cutler Hammer Inc
•
Filing: 1971-10-04
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Granted: 1973-12-04
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Expires: 1991-10-04
Abstract
Abstract A harmonic generator such as a step recovery diode device is driven by two or more input signals of different frequencies to produce a comb spectrum consisting of lines at multiples of the input signal frequencies interspersed with lines at the frequencies of the intermodulation products.
Inventors
- 👤 F Telewski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 19:22
CPC Classifications
H; H03; H03B; H03B21/00; H03B19/00
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
42 words
The method of generating a microwave frequency comb with narrow line spacing, comprising the steps of: a. producing signals that differ in frequency by the desired line spacing, b. Generating harmonics of said signals, and c. generating intermodulation products of said harmonics.
Claim 2
Independent Claim
42 words
The method of generating a microwave frequency comb with narrow line spacing, comprising the steps of: a. producing signals that differ in frequency by the desired line spacing, b. Generating harmonics of said signals, and c. generating intermodulation products of said harmonics.
Claim 3
Independent Claim
64 words
The method of generating a microwave frequency comb with narrow line spacing, comprising the steps of: a. producing a signal of a frequency equal to the desired line spacing, b. utilizing said signal to produce at least two further signals that differ in frequency by the desired line spacing, c. generating harmonics of said further signals, and d. generating intermodulation products of said harmonics.
Claim 4
Independent Claim
64 words
The method of generating a microwave frequency comb with narrow line spacing, comprising the steps of: a. producing a signal of a frequency equal to the desired line spacing, b. utilizing said signal to produce at least two further signals that differ in frequency by the desired line spacing, c. generating harmonics of said further signals, and d. generating intermodulation products of said harmonics.
Claim 5
Independent Claim
29 words
The method of operating a step recovery diode comb generator which comprises driving said generator at two frequencies that differ from each other by the desired comb line spacing.
Claim 6
Independent Claim
29 words
The method of operating a step recovery diode comb generator which comprises driving said generator at two frequencies that differ from each other by the desired comb line spacing.
Claim 7
Dependent Claim
19 words
The method set forth in claim 3, wherein said two frequencies are integral multiples of said comb line spacing.
Claim 8
Dependent Claim
78 words
Apparatus for generating a microwave frequency comb with narrow line spacing Fs, comprising: a. a harmonic generator adapted to be driven by signals of frequencies in the vicinity of NFs, where N is a number substantially greater than unity, b. means for producing at least two drive signals of frequencies in the vicinity of NFs that differ in frequency by the desired line spacing Fs, and c. means for applying said drive signals simultaneously to said harmonic generator.
Claim 9
Dependent Claim
78 words
Apparatus for generating a microwave frequency comb with narrow line spacing Fs, comprising: a. a harmonic generator adapted to be driven by signals of frequencies in the vicinity of NFs, where N is a number substantially greater than unity, b. means for producing at least two drive signals of frequencies in the vicinity of NFs that differ in frequency by the desired line spacing Fs, and c. means for applying said drive signals simultaneously to said harmonic generator.
Claim 10
Dependent Claim
52 words
The invention set forth in claim 5, wherein said harmonic generator is a step recovery diode device, and said means for producing said drive signals comprises an oscillator of frequency Fs, an impulse generator driven by said oscillator, and band pass filter means designed to pass frequencies in the vicinity of NFs.
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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) | 1976-12-03 | 1977-06-04 | 1977-12-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-03 | 1981-06-04 | 1981-12-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-03 | 1985-06-04 | 1985-12-04 | $7700.00 | Window Closed / Lapsed |