Patent US3609573A successfully refreshed from Google Patents.
US3609573A
Expired / Lapsed
US
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Balanced amplifier
Assignee: Anaren Microwave Inc
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Filing: 1969-05-26
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Granted: 1971-09-28
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Expires: 1989-05-26
Abstract
Abstract A balanced transistor amplifier is disposed on a slab of electrically and thermally conductive material. Two transistors are fixed in thermal contact with the slab. A 3 db. quadrature coupler feeds a signal from a common input to both transistors. A second 3 db. quadrature coupler feeds the amplified signals from both transistors to a common output.
Inventors
- 👤 Hugh A Hair
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:49
CPC Classifications
H; H03; H03F; H03F3/00; H03F3/20; H03F3/21
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
329 words
A balanced amplifier comprising: a slab of thermally and electrically conductive material, said slab being provided with at least two cavities, said slab having sufficient thermal capacity to act as a heat sink; at least two solid state signal amplifying devices, each of said signal-amplifying devices having a thermally conductive housing and at least two terminals, the housing of each of said signal-amplifying devices resting in one Of said cavities, respectively, to be in thermal contact with said slab whereby heat generated by said signal-amplifying devices flows into said slab; at least two stripline couplers, each of said couplers comprising a sheet of insulating material disposed opposite said slab and parallel thereto, a pair of striplike conductors, each of said striplike conductors being printed on a different side of said sheet of said insulating material, said striplike conductors being electromagnetically coupled to each other, and an electrically conductive ground plane element disposed in a plane parallel to the plane of said slab, and spaced from and opposite the striplike conductor remote from said slab, the portion of said slab opposite the other striplike conductor providing the other ground plane element for the coupler; means for connecting one end of one striplike conductor of one of said couplers to one terminal of one of said signal-amplifying devices; means for connecting one end of the other striplike conductor of said one of said couplers to the same one terminal of the other signal-amplifying device; means for connecting one end of one striplike conductor of the other of said couplers to the other terminal of said one signal-amplifying device; and means for connecting one end of the other striplike conductor of the other of said couplers to the other terminal of said other signal-amplifying device; and other ends of the striplike conductors of said one coupler being adapted to receive an input signal, and the other ends of the striplike conductors of said other coupler being adapted to transmit an output signal.
Claim 2
Dependent Claim
329 words
A balanced amplifier comprising: a slab of thermally and electrically conductive material, said slab being provided with at least two cavities, said slab having sufficient thermal capacity to act as a heat sink; at least two solid state signal amplifying devices, each of said signal-amplifying devices having a thermally conductive housing and at least two terminals, the housing of each of said signal-amplifying devices resting in one Of said cavities, respectively, to be in thermal contact with said slab whereby heat generated by said signal-amplifying devices flows into said slab; at least two stripline couplers, each of said couplers comprising a sheet of insulating material disposed opposite said slab and parallel thereto, a pair of striplike conductors, each of said striplike conductors being printed on a different side of said sheet of said insulating material, said striplike conductors being electromagnetically coupled to each other, and an electrically conductive ground plane element disposed in a plane parallel to the plane of said slab, and spaced from and opposite the striplike conductor remote from said slab, the portion of said slab opposite the other striplike conductor providing the other ground plane element for the coupler; means for connecting one end of one striplike conductor of one of said couplers to one terminal of one of said signal-amplifying devices; means for connecting one end of the other striplike conductor of said one of said couplers to the same one terminal of the other signal-amplifying device; means for connecting one end of one striplike conductor of the other of said couplers to the other terminal of said one signal-amplifying device; and means for connecting one end of the other striplike conductor of the other of said couplers to the other terminal of said other signal-amplifying device; and other ends of the striplike conductors of said one coupler being adapted to receive an input signal, and the other ends of the striplike conductors of said other coupler being adapted to transmit an output signal.
Claim 3
Dependent Claim
23 words
The AC signal amplifier of claim 1 wherein each of said signal-amplifying devices has a third terminal which is connected to said slab.
Claim 4
Dependent Claim
15 words
The AC signal amplifier of claim 1 wherein each coupler is a 3 db. coupler.
Claim 5
Dependent Claim
14 words
The AC signal amplifier of claim 1 wherein each coupler is a quadrature coupler.
Claim 6
Dependent Claim
44 words
The AC signal amplifier of claim 1 wherein each of said striplike conductors of each of said couplers traces a meandered path in its associated plane, said meandered paths being opposite each other whereby the associated striplike conductors are in opposed substantially face-to-face relationship.
Claim 7
Dependent Claim
322 words
A balanced amplifier comprising: a slab of thermally and electrically conductive material, said slab having sufficient thermal capacity to act as a heat sink, said slab being provided with at least two cavities; at least two solid state signal amplifying devices, each of said signal-amplifying devices having a thermally conductive housing and at least two terminals, the housing of each of said signal-amplifying devices resting in one of said cavities, respectively, to be in thermal contact with said slab whereby heat generated by said signal-amplifying devices flows into said slab; at least two stripline couplers, each of said couplers comprising a pair of striplike conductors disposed in planes mutually spaced from each other and parallel to the plane of said slab, said striplike conductors having the same meandered path and being electromagnetically coupled to each other, and an electrically conductive ground plane element disposed in a plane parallel to the plane of said slab and spaced from and opposite the striplike conductor remote from said slab, the portion of said slab opposite the other striplike conductor providing the other ground plane element for the coupler; means for connecting one end of one striplike conductor of one of said couplers to one terminal of one of said signal amplifying devices; means for connecting one end of the other striplike conductor of said one of said couplers to the same one terminal of the other signal-amplifying device; means for connecting one end of one striplike conductor of the other of said couplers to the other terminal of said one signal-amplifying device; and means for connecting one end of the other striplike conductor of the other of said couplers to the other terminal of said other signal-amplifying devicE; the other ends of the striplike conductors of said one coupler being adapted to receive an input signal, and the other ends of the striplike conductors of said other coupler being adapted to transmit an output signal.
Claim 8
Dependent Claim
322 words
A balanced amplifier comprising: a slab of thermally and electrically conductive material, said slab having sufficient thermal capacity to act as a heat sink, said slab being provided with at least two cavities; at least two solid state signal amplifying devices, each of said signal-amplifying devices having a thermally conductive housing and at least two terminals, the housing of each of said signal-amplifying devices resting in one of said cavities, respectively, to be in thermal contact with said slab whereby heat generated by said signal-amplifying devices flows into said slab; at least two stripline couplers, each of said couplers comprising a pair of striplike conductors disposed in planes mutually spaced from each other and parallel to the plane of said slab, said striplike conductors having the same meandered path and being electromagnetically coupled to each other, and an electrically conductive ground plane element disposed in a plane parallel to the plane of said slab and spaced from and opposite the striplike conductor remote from said slab, the portion of said slab opposite the other striplike conductor providing the other ground plane element for the coupler; means for connecting one end of one striplike conductor of one of said couplers to one terminal of one of said signal amplifying devices; means for connecting one end of the other striplike conductor of said one of said couplers to the same one terminal of the other signal-amplifying device; means for connecting one end of one striplike conductor of the other of said couplers to the other terminal of said one signal-amplifying device; and means for connecting one end of the other striplike conductor of the other of said couplers to the other terminal of said other signal-amplifying devicE; the other ends of the striplike conductors of said one coupler being adapted to receive an input signal, and the other ends of the striplike conductors of said other coupler being adapted to transmit an output signal.
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) | 1974-09-27 | 1975-03-29 | 1975-09-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-27 | 1979-03-29 | 1979-09-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-27 | 1983-03-29 | 1983-09-28 | $7700.00 | Window Closed / Lapsed |