CA1233531A
Expired / Lapsed
CA
⏱️ 0.0 years remaining
Electronic hybrid circuit
Assignee: Nortel Networks Ltd
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Filing: 1985-09-16
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Granted: 1988-03-01
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Expires: 2005-09-16
Abstract
Abstract ELECTRONIC HYBRID CIRCUIT Abstract of the Disclosure An electronic hybrid circuit includes a differential amplifier having its non-inverting input coupled via a resistor to a four-wire input port and via a coupling transformer to a two-wire input/output port, its output coupled to a four-wire output port, and its inverting input coupled via a resistor to the input port and also coupled to an impedance network. The impedance network includes an inductive impedance which is coupled either to the amplifier output or to circuit ground, and which may be constituted by a gyrator or other electronic circuit which simulates an inductor. - i -
Inventors
- 👤 Mumtaz B. Gawargy
Bibliographic Details
Application Number
—
Jurisdiction
CA
Data Source
google_patents
Last Synchronized
2026-11-01 13:36
CPC Classifications
H; H04; H04B; H04B1/00; H04B1/38; H04B1/40; H04B1/54; H04B1/58; H04B1/586
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
104 words
An electronic hybrid circuit comprising: an input port and an output port for connection to a four-wire path; a differential amplifier having an inverting input, a non-inverting input, and an output coupled to the output port; first and second impedances each coupled between the input port and a respective one of the inputs of the differential amplifier; means for coupling a two-wire path to a junction between the first impedance and the respective input of the differential amplifier; and impedance means coupled to a junction between the second impedance and the respective input of the differential amplifier, the impedance means including an inductive impedance.
Claim 2
Dependent Claim
104 words
An electronic hybrid circuit comprising: an input port and an output port for connection to a four-wire path; a differential amplifier having an inverting input, a non-inverting input, and an output coupled to the output port; first and second impedances each coupled between the input port and a respective one of the inputs of the differential amplifier; means for coupling a two-wire path to a junction between the first impedance and the respective input of the differential amplifier; and impedance means coupled to a junction between the second impedance and the respective input of the differential amplifier, the impedance means including an inductive impedance.
Claim 3
Dependent Claim
24 words
A circuit as claimed in claim 1 wherein the impedance means is coupled between the inverting input and the output of the differential amplifier.
Claim 4
Dependent Claim
31 words
A circuit as claimed in claim 1 wherein the inductive impedance of the impedance means is coupled between the inverting input of the differential amplifier and a point of reference potential.
Claim 5
Dependent Claim
29 words
A circuit as claimed in claim 3 wherein the impedance means comprises a series-connected capacitor and resistor coupled between the inverting input and the output of the differential amplifier.
Claim 6
Dependent Claim
26 words
A circuit as claimed in claim 1, 2, or 3 wherein the impedance means comprises a series-connected capacitor and resistor in parallel with the inductive impedance.
Claim 7
Dependent Claim
24 words
A circuit as claimed in any of claims 1 to 3 wherein the impedance means comprises a capacitor in parallel with the inductive impedance.
Claim 8
Dependent Claim
32 words
A circuit as claimed in claim 2 wherein the impedance means comprises a series-connected capacitor and resistor in parallel with the inductive impedance, and a capacitor in parallel with the inductive impedance.
Claim 9
Dependent Claim
23 words
A circuit as claimed in any of claims 1 to 3 wherein the inductive impedance comprises an electronic circuit which simulates an inductor.
Claim 10
Dependent Claim
21 words
A circuit as claimed in claim 4 or 7 wherein the inductive impedance comprises an electronic circuit which simulates an inductor.
Claim 11
Dependent Claim
19 words
A circuit as claimed in any of claims 1 to 3 wherein the first and second impedances comprise resistors.
Claim 12
Dependent Claim
38 words
A circuit as claimed in any of claims 1 to 3 wherein the means for coupling a two-wire path to the junction between the first impedance and the respective input of the differential amplifier comprises a coupling transformer.
Claim 13
Dependent Claim
53 words
A circuit as claimed in any of claims 1 to 3 wherein the means for coupling a two-wire path to the junction between the first impedance and the respective input of the differential amplifier comprises a coupling transformer, the circuit including a capacitor coupled between said junction and a point of reference potential.
References Cited (Backward Citations)
No citation records indexed.
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