US3883833A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Linear phase filter with determinable gain characteristic
Assignee: Telex Computer Products Inc
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Filing: 1974-01-07
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Granted: 1975-05-13
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Expires: 1994-01-07
Abstract
Abstract Amplifiers are added at selected junctions between the reactances of a linear phase LC filter of the kind having an open circuit termination, and the outputs of the amplifiers are added to produce an output signal linear in phase with the input signal, but compensated as desired in respect of its frequency vs. amplitude characteristic. The characteristic is determinable by selecting various different values for the gains of the amplifiers.
Inventors
- 👤 Koho Ozone
- 👤 Uno Randmere
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 13:26
CPC Classifications
H; H03; H03H; H03H11/00; H03H11/02; H03H11/04; H03H11/12; H03H11/1217
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
75 words
A ''''phase less'''' corrected linear phase filter comprising a linear phase filter of the LC type having an open circuit termination, amplifiers having high input impedances, the inputs of said amplifiers being connected to selected junctions between the reactive components of the filter, and means connecting the outputs of said amplifiers to a common output terminal so that the signal at the common output terminal represents the sum of the output signals of the amplifiers.
Claim 2
Dependent Claim
75 words
A ''''phase less'''' corrected linear phase filter comprising a linear phase filter of the LC type having an open circuit termination, amplifiers having high input impedances, the inputs of said amplifiers being connected to selected junctions between the reactive components of the filter, and means connecting the outputs of said amplifiers to a common output terminal so that the signal at the common output terminal represents the sum of the output signals of the amplifiers.
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) | 1978-05-12 | 1978-11-11 | 1979-05-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-05-12 | 1982-11-11 | 1983-05-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-05-12 | 1986-11-11 | 1987-05-13 | $7700.00 | Window Closed / Lapsed |