Patent US3573632A successfully refreshed from Google Patents.
US3573632A
Expired / Lapsed
US
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Combined parametric amplifier and mixer arrangement
Assignee: International Standard Electric Corp
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Filing: 1967-11-09
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Granted: 1971-04-06
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Expires: 1987-11-09
Abstract
Abstract An arrangement comprising a parametric amplifier, a mixer, an oscillator coupled to the mixer, a frequency doubler coupled to the oscillator to provide a pump frequency for the amplifier, and a source of input signals coupled to the amplifier wherein the idler frequency and amplified input signals are combined with the oscillator signals in the mixer to produce two sideband signals of the same frequency that are combined resulting in a single sideband signal output of the mixer having increased amplitude.
Inventors
- 👤 Hans Kuhn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 07:43
CPC Classifications
H; H03; H03D; H03D7/00; H03F; H03F7/00; H03F7/04; H03D7/16; H03D7/161; H03D7/163
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
215 words
A combined parametric amplifier and mixer arrangement to generate a single sideband signal having increased amplitude comprising: a source of input signal having a first given frequency; a parametric amplifier having a pump signal input and a combined input-output; first means to generate a local oscillator signal having a second given frequency different than said first frequency; a mixer having two inputs and an output, one of said inputs being coupled to the output of said first means; second means coupled between said output of said first means and said pump signal input of said parametric amplifier to provide a pump signal having a third given frequency different than said first and second given frequency for said parametric amplifier; and third means coupled between the output of said source, said combined input-output of said parametric amplifier and the other of said inputs of said mixer; said mixer responding to said input signal, said local oscillator signal and the lower sideband of said input signal and said pump signal to combine the difference frequency of said local oscillator signal and said input signal with the difference frequency of said local oscillator signal and the lower sideband of said input signal and said pump signal to generate said single sideband signal at the output of said mixer.
Claim 2
Dependent Claim
215 words
A combined parametric amplifier and mixer arrangement to generate a single sideband signal having increased amplitude comprising: a source of input signal having a first given frequency; a parametric amplifier having a pump signal input and a combined input-output; first means to generate a local oscillator signal having a second given frequency different than said first frequency; a mixer having two inputs and an output, one of said inputs being coupled to the output of said first means; second means coupled between said output of said first means and said pump signal input of said parametric amplifier to provide a pump signal having a third given frequency different than said first and second given frequency for said parametric amplifier; and third means coupled between the output of said source, said combined input-output of said parametric amplifier and the other of said inputs of said mixer; said mixer responding to said input signal, said local oscillator signal and the lower sideband of said input signal and said pump signal to combine the difference frequency of said local oscillator signal and said input signal with the difference frequency of said local oscillator signal and the lower sideband of said input signal and said pump signal to generate said single sideband signal at the output of said mixer.
Claim 3
Dependent Claim
17 words
An arrangement according to claim 1, wherein, said third given frequency is twice said second given frequency.
Claim 4
Dependent Claim
14 words
An arrangement according to claim 1, wherein, said second means includes a frequency doubler.
Claim 5
Dependent Claim
86 words
An arrangement according to claim 1, wherein, said third means includes; first circulator means coupled between said source and said parametric amplifier to supply said input signal to said parametric amplifier and to extract said input signal and said lower sideband of said input signal and said pump signal from said parametric amplifier; and second circulator means coupled between said first circulator means and said mixer to supply said input signal and said lower sideband of said input signal and said pump signal to said mixer.
Claim 6
Dependent Claim
94 words
An arrangement according to claim 1, wherein: said second means includes a frequency doubler; and said third means includes; first circulator means coupled between said source and said parametric amplifier to supply said input signal to said parametric amplifier and to extract said input signal and said lower sideband of said input signal and said pump signal from said parametric amplifier; and second circulator means coupled between said first circulator means and said mixer to supply said input signal and said lower sideband of said input signal and said pump signal to said mixer.
Claim 7
Dependent Claim
17 words
An arrangement according to claim 5, wherein, said parametric amplifier has a negative resistance and up-converter characteristic.
Claim 8
Dependent Claim
17 words
An arrangement according to claim 1, wherein, said parametric amplifier has a negative resistance and up-converter characteristic.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-04-05 | 1974-10-05 | 1975-04-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-04-05 | 1978-10-05 | 1979-04-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-04-05 | 1982-10-05 | 1983-04-06 | $7700.00 | Window Closed / Lapsed |