US3867707A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Controlled signal receiver
Assignee: HP Inc
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Filing: 1973-04-19
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Granted: 1975-02-18
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Expires: 1993-04-19
Abstract
Abstract A microwave FM receiver is provided comprising a tuned radio frequency receiver utilizing microwave integrated circuits, the system including a novel automatic gain control limiter for AM suppression and a novel discriminator circuit for FM demodulation, said discriminator comprising a MIC transmission line structure provided with dissipative elements to absorb harmonics of the carrier frequency.
Inventors
- 👤 Richard D Pering
- 👤 James A Hall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 06:47
CPC Classifications
H; H03; H03H; H03H7/00; H03H7/24; H03H7/25; H03H7/253; H03H7/255; H03D; H03D9/00; H03D9/02; H03D9/04; H03G; H03G11/00; H03G11/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
186 words
A signal translating apparatus for suppressing amplitude variations appearing on an applied high frequency signal, the apparatus comprising: first and second means, each having a pair of inputs and an output for producing at the output thereof a signal which is representative of the combination of signals applied to the inputs thEreof; means for coupling the output of the first means to one input of the second means; detector means for producing an output signal representative of amplitude variations of a high frequency signal applied thereto; means coupling the output of said second means to said detector means for applying a high frequency signal thereto from said second means; first circuit means for applying said output signal from said detector means to another input of the second means; second circuit means for applying said output signal from said detector means to one input of said first means, said second circuit means having a longer time constant than said first circuit means; and means coupled to another input of said first means for applying thereto a high frequency signal having amplitude variations which are to be suppressed.
Claim 2
Dependent Claim
186 words
A signal translating apparatus for suppressing amplitude variations appearing on an applied high frequency signal, the apparatus comprising: first and second means, each having a pair of inputs and an output for producing at the output thereof a signal which is representative of the combination of signals applied to the inputs thEreof; means for coupling the output of the first means to one input of the second means; detector means for producing an output signal representative of amplitude variations of a high frequency signal applied thereto; means coupling the output of said second means to said detector means for applying a high frequency signal thereto from said second means; first circuit means for applying said output signal from said detector means to another input of the second means; second circuit means for applying said output signal from said detector means to one input of said first means, said second circuit means having a longer time constant than said first circuit means; and means coupled to another input of said first means for applying thereto a high frequency signal having amplitude variations which are to be suppressed.
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) | 1978-02-17 | 1978-08-19 | 1979-02-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-02-17 | 1982-08-19 | 1983-02-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-02-17 | 1986-08-19 | 1987-02-18 | $7700.00 | Window Closed / Lapsed |