Patent US3810038A successfully refreshed from Google Patents.
US3810038A
Expired / Lapsed
US
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System for deriving from a single stable oscillator a plurality of different selectable local oscillator signal
Assignee: Alcatel Lucent NV
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Filing: 1972-11-14
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Granted: 1974-05-07
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Expires: 1992-11-14
Abstract
Abstract An arrangement is disclosed to provide a different local oscillator signal for each of N receivers contained in a communication station, where N is equal to an integer greater than one. Each of the receivers receive a different one of N communication frequency channels with adjacent ones of the N frequency channels being spaced from each other by a given frequency value. One embodiment incorporates a highly stable oscillator generating a signal having a frequency equal to the given frequency value. The oscillator output signal is then amplified to a high level and distributed to N multiplier/electrically controlled filter units. A different local oscillator signal is then selected for each of the receivers by an associated one of the electrically controlled filters. A second embodiment is identical to the first embodiment through the output of the N multipliers. In the second embodiment there is provided N units, each of which is coupled to a different one of the N multipliers. Each of these N units include N filters, each tuned to a different one of the required local oscillator signals, and N electrically controlled semiconductor switches. A different local oscillator signal is then selected for each of the receivers by a filter and a semiconductor switch of an associated one of the N units. A third embodiment includes the oscillator of the first and second embodiment, a multiplier coupled to the oscillator and one group of N filters of the second embodiment. The outputs of the N filters in this embodiment is fed to a semiconductor NxN matrix. The matrix is controlled to route each of the different local oscillator signals to a different associated one of the N receivers.
Inventors
- 👤 J Dewland
- 👤 D Hershberg
- 👤 A Chaplin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 05:13
CPC Classifications
H; H03; H03B; H03B21/00; H03B21/01; H03B21/02
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
201 words
An arrangement to provide a different local oscillator signal for each of N receivers contained in a station, where N is equal to an integer greater than one, each of said N receivers receiving a different one of N frequency channels, adjacent ones of said N frequency channels being spaced from each other by a given frequency valUe, said arrangement comprising: a highly stable oscillator having an output to provide a signal having a frequency equal to said given frequency value; N first means each generating N signals, each of said first means having an input coupled to the output of said oscillator and an output to provide said N signals, each of said N signals having a different frequency related to said given frequency value, adjacent ones of said different frequencies being spaced by said given frequency value; and N second means each having an output coupled to an associated one of said N receivers and an input coupled to the output of an associated one of said first means, said N second means being capable of simultaneous selection of an appropriate one of said N signals to provide a different local oscillator signal for each of said N receivers.
Claim 2
Dependent Claim
201 words
An arrangement to provide a different local oscillator signal for each of N receivers contained in a station, where N is equal to an integer greater than one, each of said N receivers receiving a different one of N frequency channels, adjacent ones of said N frequency channels being spaced from each other by a given frequency valUe, said arrangement comprising: a highly stable oscillator having an output to provide a signal having a frequency equal to said given frequency value; N first means each generating N signals, each of said first means having an input coupled to the output of said oscillator and an output to provide said N signals, each of said N signals having a different frequency related to said given frequency value, adjacent ones of said different frequencies being spaced by said given frequency value; and N second means each having an output coupled to an associated one of said N receivers and an input coupled to the output of an associated one of said first means, said N second means being capable of simultaneous selection of an appropriate one of said N signals to provide a different local oscillator signal for each of said N receivers.
Claim 3
Dependent Claim
61 words
An arrangement according to claim 1, wherein each of said first means includes an amplifier having an output and an input coupled to the output of said oscillator, and a frequency multiplier having an output and an input coupled to the output of said amplifier, said multiplier being rich in harmonics of said given frequency value to generate said N signals.
Claim 4
Dependent Claim
94 words
An arrangement according to claim 2, wherein each of said second means includes an electrically controlled filter means having an output coupled to an associated one of said N receivers, a control input and a signal input coupled to the output of an associated one of said multipliers, and third means having an output coupled to the control input of said controlled filter means capable of controlling said controlled filter means to pass different ones of said N signals independent of each other, said third means selecting said appropriate one of said N signals.
Claim 5
Dependent Claim
158 words
An arrangement according to claim 2, wherein each of said second means includes N filters each having an output and an input coupled to an associated one of said multipliers, each of said N filters being tuned to a different one of said N signals, N switch means, each of said N switch means having an output, a control input and a signal input coupled to the output of a different one of said N filters, third means having N outputs each coupled to the control input of a different one of said N switch means for control thereof to select said appropriate one of said N signals, and fourth means having an output coupled to an associated one of said N receivers and N inputs each coupled to the output of an associated one of said N switch means to couple said selected appropriate one of said N signals to said associated one of said N receivers.
Claim 6
Dependent Claim
15 words
An arrangement according to claim 4, wherein said N switch means includes N semiconductor switches.
Claim 7
Dependent Claim
87 words
An arrangement according to claim 1, wherein each of said second means includes an electrically controlled filter means having an output coupled to an associated one of said receivers, a control input and a signal input coupled to said first means, and third means having an output coupled to the control input of said controlled filter means capable of controlling said controlled filter means to pass different ones of said N signals independent of each other, said third means selecting said appropriate one of said N signals.
Claim 8
Dependent Claim
155 words
An arrangement according to claim 1, wherein each of said second means includes N filters each having an output and an input coupled to said first means, each of said N filters being tuned to a different one of said N signals, N switch means, each of said N switch means having an output, a control input and a signal input coupled to the output of a different one of said N filters, third means having N outputs each coupled to the control input of a different one of said N switch means for control thereof to select said appropriate one of said N signals, and fourTh means having an output coupled to an associated one of said N receivers and N inputs each coupled to the output of an associated one of said N switch means to couple said selected appropriate one of said N signals to said associated one of said N receivers.
Claim 9
Dependent Claim
15 words
An arrangement according to claim 7, wherein said N switch means includes N semiconductor switches.
References Cited (Backward Citations)
US3277379A
Cited
US3626315A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-05-06 | 1977-11-05 | 1978-05-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-05-06 | 1981-11-05 | 1982-05-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-05-06 | 1985-11-05 | 1986-05-07 | $7700.00 | Window Closed / Lapsed |