Patent US3566046A successfully refreshed from Google Patents.
US3566046A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Two-way amplifier for single-line transmission
Assignee: General Electric Co
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Filing: 1968-08-27
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Granted: 1971-02-23
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Expires: 1988-08-27
Abstract
Abstract An amplifier employing a directional coupler and branching filter amplifies a plurality of signals having different frequencies and moving in different directions in a single transmission line or coaxial cable. The directional coupler couples the plurality of signals into and out of a plurality of amplifying branches and also provides power isolation between branches. The branching filter performs the function of separating the signals having different frequencies.
Inventors
- 👤 Edward D Mccormick
- 👤 Frederick A Hottes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 09:46
CPC Classifications
H; H04; H04J; H04J1/00; H04J1/02; H04J1/10; H04B; H04B3/00; H04B3/02; H04B3/36; H04B3/38
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
173 words
An amplifying device for amplifying signals in a plurality of frequency domains ranging up through the VHF band and moving in forward and reverse directions in a single transmission medium, said device comprising: a plurality of amplifying branches; directional coupling means for coupling forward moving signals into at least one of said plurality of amplifying branches and coupling reverse moving signals received from at least one of said plurality of amplifying branches into a first portion of the transmission medium; selective frequency passing means connected to a second portion of the transmission medium ant to each of said plurality of amplifying branches, said selective frequency passing means passing signals in the higher frequency domains between at least one of said amplifying branches and the second portion of the transmission medium and passing signals in the lower frequency domains between the remaining amplifying branches and the second portion of the transmission medium; and wherein said directional coupling means and said selective frequency passing means are asymmetrically located at the ends of said amplifying branches.
Claim 2
Dependent Claim
173 words
An amplifying device for amplifying signals in a plurality of frequency domains ranging up through the VHF band and moving in forward and reverse directions in a single transmission medium, said device comprising: a plurality of amplifying branches; directional coupling means for coupling forward moving signals into at least one of said plurality of amplifying branches and coupling reverse moving signals received from at least one of said plurality of amplifying branches into a first portion of the transmission medium; selective frequency passing means connected to a second portion of the transmission medium ant to each of said plurality of amplifying branches, said selective frequency passing means passing signals in the higher frequency domains between at least one of said amplifying branches and the second portion of the transmission medium and passing signals in the lower frequency domains between the remaining amplifying branches and the second portion of the transmission medium; and wherein said directional coupling means and said selective frequency passing means are asymmetrically located at the ends of said amplifying branches.
Claim 3
Dependent Claim
19 words
The device of claim 1 wherein said directional coupling means provides power isolation between said plurality of amplifying branches.
Claim 4
Dependent Claim
26 words
The device of claim 1 wherein at least one of the plurality of amplifying branches has means for amplifying signals in more than one frequency domain.
Claim 5
Dependent Claim
66 words
The device of claim 1 wherein at least one of the plurality of amplifying branches has amplifying means for amplifying forward and reverse moving signals in more than one frequency domain, said amplifying means including an amplifier for each frequency domain, branch filter means for separating signals in different frequency domains, and branch directional coupling means for coupling signals into and out of said amplifying branch.
Claim 6
Dependent Claim
90 words
The device of claim 1 haviNg two amplifying branches: a first branch having means for amplifying forward moving signals in a first frequency domain; a second branch having means for amplifying reverse moving signals in a second frequency domain; said directional coupling means located at one junction of the branches; and said selective frequency passing means located at the other junction of said branches, whereby said signals in a first frequency domain travel in the first branch and the signals in said second frequency domain travel in the second branch.
Claim 7
Dependent Claim
15 words
The device of claim 5 wherein said main directional coupling means is a hybrid coupler.
Claim 8
Dependent Claim
96 words
The device of claim 5 wherein said selective frequency passing means comprises first and second branch filter means coupled to said forward and reverse moving signal amplifiers respectively, and further comprising: a second means for amplifying forward moving signals coupled between said first branch and said second branch filter means; and second direction coupling means coupled between said first and second branch filters and said means for amplifying reverse moving signals, whereby signals moving in either direction in transmission media connected to the amplifying device are properly sorted, amplified and power isolated one from the other.
Claim 9
Dependent Claim
31 words
The device of claim 7 further comprising third directional coupler means coupled to said second branch filter means for coupling a plurality of transmission media to said second branch filter means.
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) | 1974-02-22 | 1974-08-24 | 1975-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-22 | 1978-08-24 | 1979-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-22 | 1982-08-24 | 1983-02-23 | $7700.00 | Window Closed / Lapsed |