US3619655A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Noise paralleled signal seriesed multistaged amplifier
Assignee: Collins Radio Co
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Filing: 1969-12-19
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Granted: 1971-11-09
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Expires: 1989-12-19
Abstract
Abstract A noise paralleled signal seriesed multistaged amplifier with a plurality of transistors each with an antenna sensed AC signal connection to the base as a control element input and with this including a DC bias connection through an individual antenna wire conductor and with these antenna wires insulated mutually from each other. Each transistor includes a collector connection to a voltage supply, and an emitter follower connection through an individual transformer primary coil to ground. The transformer secondary coils are connected in series in a signal output circuit to, in combination, provide the desired device noise paralleled and signal seriesed result for an optimized system signal to noise ratio in the output from an H-vector loop VLF-LF antenna to amplifier system.
Inventors
- 👤 Paul M Cunningham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 18:48
CPC Classifications
H; H03; H03F; H03F1/00; H03F1/26; H03F3/00; H03F3/189; H03F3/19
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
149 words
In a noise paralleled signal seriesed multisolid state device amplifier system, a plurality of solid state devices having at least three electrodes, a first electrode, a second, and a third electrode; voltage connective means to each of said first electrodes; individual DC voltage bias connective circuit means to each of said second electrodes, and with said second electrodes a control electrode for each of said respective solid state devices; transformer primary coils individually connected respectively between each of said third electrodes and a voltage potential reference source; an RF signal sensing element individually included in each of said individual DC voltage bias connective circuit means; transformer secondary coils individually in signal coupling relation to said transformer primary coils; with a plurality of transformer secondary coils series connected in a signal output circuit; and wherein said RF signal sensing elements are individual antenna line conductors mutually insulated from each other.
Claim 2
Dependent Claim
149 words
In a noise paralleled signal seriesed multisolid state device amplifier system, a plurality of solid state devices having at least three electrodes, a first electrode, a second, and a third electrode; voltage connective means to each of said first electrodes; individual DC voltage bias connective circuit means to each of said second electrodes, and with said second electrodes a control electrode for each of said respective solid state devices; transformer primary coils individually connected respectively between each of said third electrodes and a voltage potential reference source; an RF signal sensing element individually included in each of said individual DC voltage bias connective circuit means; transformer secondary coils individually in signal coupling relation to said transformer primary coils; with a plurality of transformer secondary coils series connected in a signal output circuit; and wherein said RF signal sensing elements are individual antenna line conductors mutually insulated from each other.
Claim 3
Dependent Claim
45 words
The noise paralleled signal seriesed multisolid state device amplifier system of claim 1, wherein said individual antenna line conductors are each connected to individual bias means at antenna line conductor ends remote from connections thereof, respectively, to said second electrodes of the solid state devices.
Claim 4
Dependent Claim
27 words
The noise paralleled signal seriesed multisolid state device amplifier system of claim 2, wherein said individual bias means each include a voltage divider from a voltage supply.
Claim 5
Dependent Claim
34 words
The noise paralleled signal seriesed multisolid state device amplifier system of claim 3, wherein said voltage supply is a common voltage supply connected to said voltage connective means to each of said first electrodes.
Claim 6
Dependent Claim
62 words
The noise paralleled signal seriesed multisolid state device amplifier system of claim 1, wherein said solid state devices are transistors with said first electrode a transistor collector, said second electrode a transistor base, and said third electrode an emitter; and with the emitter of each transistor connected through a transformer coil to said voltage potential reference source in an emitter follower configuration.
Claim 7
Dependent Claim
27 words
The noise paralleled signal seriesed multisolid state device amplifier system of claim 5, wherein said transistors are NPN transistors, and said voltage potential reference source is ground.
Claim 8
Dependent Claim
33 words
The noise paralleled signal seriesed multisolid state device amplifier system of claim 6, wherein said signal output circuit includes series connection of said transformer secondary coils between ground and signal output connective 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) | 1974-11-08 | 1975-05-10 | 1975-11-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-08 | 1979-05-10 | 1979-11-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-08 | 1983-05-10 | 1983-11-09 | $7700.00 | Window Closed / Lapsed |