US3665333A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Push-pull amplifier
Assignee: Jerrold Electronics Corp
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Filing: 1970-05-05
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Granted: 1972-05-23
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Expires: 1990-05-05
Abstract
Abstract In an improved push-pull amplifier, the input and output phase inverters each include 3db hybrid splitters with a 180* phase shift transformer in one output leg and a 0* phase shift transformer in the other leg. Each phase inverter is separately mounted on a plug-in circuit board having provisions for releasable connection with the inputs and outputs of the amplifier sections.
Inventors
- 👤 Henry Yastrov
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 03:02
CPC Classifications
H; H03; H03F; H03F1/00; H03F1/32; H03F1/3217; H03F3/00; H03F3/26; H03H; H03H7/00; H03H7/18; H03H7/21; H03H7/48; H03H7/487
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
149 words
In a push-pull amplifier including first and second amplifier sections, an input phase inverter comprising a first 3db hybrid splitter having an input coupled to a source of an input signal and first and second output legs, first 180* phase shift means coupled to one of said output legs, and first 0* phase shift means coupled to the other of said output legs, first and second ouput terminals coupled respectively to said first 0* and 180* phase shift means for respective connection to the inputs of said first and second amplifier sections, an output combiner comprising a second 3db hybrid splitter having first and second legs for respective connection to the outputs of said first and second amplifier sections, second 0* phase shift means coupled to one leg of said second hybrid splitter, and second 180* phase shift means coupled to the other leg of said second hybrid splitter.
Claim 2
Dependent Claim
149 words
In a push-pull amplifier including first and second amplifier sections, an input phase inverter comprising a first 3db hybrid splitter having an input coupled to a source of an input signal and first and second output legs, first 180* phase shift means coupled to one of said output legs, and first 0* phase shift means coupled to the other of said output legs, first and second ouput terminals coupled respectively to said first 0* and 180* phase shift means for respective connection to the inputs of said first and second amplifier sections, an output combiner comprising a second 3db hybrid splitter having first and second legs for respective connection to the outputs of said first and second amplifier sections, second 0* phase shift means coupled to one leg of said second hybrid splitter, and second 180* phase shift means coupled to the other leg of said second hybrid splitter.
Claim 3
Dependent Claim
44 words
In the amplifier of claim 1, in which the elements of said phase inverter are mounted and connected on a printed circuit card, said card comprising plug-in means for releasable coupling of said inverter to the input of said first and second amplifier sections.
Claim 4
Dependent Claim
37 words
The amplifier of claim 2, further comprising a second phase inverter As defined in claim 1 having components mounted on a second plug-in unit for releasable coupling to the outputs of said first and second amplifier sections.
Claim 5
Dependent Claim
42 words
In combination with the amplifier of claim 3, a first fixture for releasably receiving one of said phase inverters for testing the impedance and insertion loss thereof, and a second test fixture for testing the phase shift characteristics of said phase inverter.
Claim 6
Dependent Claim
37 words
The phase inverter of claim 1, in which said 0* and 180* phase shift means include first and second transformers respectively having their primary and secondary winding series coupled to the output legs of said hybrid splitter.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-05-23 | 1975-11-22 | 1976-05-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-23 | 1979-11-22 | 1980-05-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-23 | 1983-11-22 | 1984-05-23 | $7700.00 | Window Closed / Lapsed |