US5559377A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transformer coupler for communication over various lines
Assignee: Satius Holding Inc
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Filing: 1994-07-01
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Granted: 1996-09-24
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Expires: 2014-07-01
Abstract
Abstract Apparatus for electrical line communication that includes a coupler at each of two or more locations along a pair of lines, the coupler having capacitive circuits serially connected with an air-core transformer. The capacitive circuit is designed to resonate with the air-core transformer at a preselected frequency. A transmitter, receiver and modem may also be provided at each location. The apparatus incorporates a novel phase linear coupler which eliminates noise and is matched resistively to the characteristic impedance of the line at a preselected frequency. This apparatus therefore linearizes communication on the line and allows high speed data and voice communication over long distances.
Inventors
- 👤 Charles Abraham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 00:09
CPC Classifications
H; H04; H04B; H04B3/00; H04B3/54; H04B3/56; H04B2203/00; H04B2203/54; H04B2203/5429; H04B2203/545
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
116 words
A communications apparatus for communicating electrical signals through an electrical line having a characteristic impedance comprising: modulator means for modulating the electrical signals to produce a modulated carrier signal having a first preselected frequency; transmitter means having an output impedance, connected to said modulator means for transmitting the modulated carrier signal; first coupler means connected between the electrical line and the transmitter means for matching the output impedance of said transmitter means to the characteristic impedance of the electrical line, said first coupler means comprising linear phase means for communicating the modulated carrier signal to the electrical line without phase distortion and capacitor means for resonating with the linear phase means at the first preselected frequency.
Claim 2
Dependent Claim
116 words
A communications apparatus for communicating electrical signals through an electrical line having a characteristic impedance comprising: modulator means for modulating the electrical signals to produce a modulated carrier signal having a first preselected frequency; transmitter means having an output impedance, connected to said modulator means for transmitting the modulated carrier signal; first coupler means connected between the electrical line and the transmitter means for matching the output impedance of said transmitter means to the characteristic impedance of the electrical line, said first coupler means comprising linear phase means for communicating the modulated carrier signal to the electrical line without phase distortion and capacitor means for resonating with the linear phase means at the first preselected frequency.
Claim 3
Dependent Claim
65 words
The communication apparatus of claim 1 wherein said linear phase means comprises air-core transformer means for communicating said modulated carrier signal without phase distortion, said air-core transformer means comprising primary coil having a first diameter, and secondary coil having a second smaller diameter, said secondary coil extending coaxially within said primary coil such that an air-gap is created between said primary and said secondary coils.
Claim 4
Dependent Claim
16 words
The communications apparatus in accordance with claim 2 wherein said primary coil comprises a resistance wire.
Claim 5
Dependent Claim
14 words
The communications apparatus of claim 2 wherein said secondary coil comprises a resistance wire.
Claim 6
Dependent Claim
19 words
The communications apparatus of claim 2 wherein said primary coil and said secondary coil each comprise a resistance wire.
Claim 7
Dependent Claim
19 words
The communications apparatus of claim 3 wherein said resistance wire is comprised of approximately 15% Chromium and 60% Nickel.
Claim 8
Dependent Claim
19 words
The communications apparatus of claim 4 wherein said resistance wire is comprised of approximately 15% Chromium and 60% Nickel.
Claim 9
Dependent Claim
20 words
The communications apparatus of claim 3 wherein said resistance wire has a specific resistivity of approximately 675 OHM°CIR. MIL. FT.
Claim 10
Dependent Claim
20 words
The communications apparatus of claim 4 wherein said resistance wire has a specific resistivity of approximately 675 OHM°CIR. MIL. FT.
Claim 11
Dependent Claim
54 words
The communication apparatus of claim 1 wherein said linear phase means comprises dielectric core transformer means for communicating said modulated carrier signal without phase distortion; said dielectric core transformer means comprising primary coil having a first diameter, and secondary coil having a second smaller diameter, said secondary coil extending coaxially within said primary coil.
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) | 1999-09-24 | 2000-03-25 | 2000-09-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-09-24 | 2004-03-25 | 2004-09-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-09-24 | 2008-03-25 | 2008-09-24 | $7700.00 | Window Closed / Lapsed |