US3761834A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Composite wave amplifier
Assignee: Raytheon Co
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Filing: 1971-10-20
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Granted: 1973-09-25
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Expires: 1991-10-20
Abstract
Abstract A solid state composite wave amplifier is disclosed, having a corporate fed TEM mode linear RF structure with numerous transmission lines in parallel. Negative resistance devices such as the IMPATT type diode are mounted between each transmission line to provide a plus and minus mode configuration of the RF energy with the in-phase energy being transmitted axially along the lines. Cylindrical inner and outer resistor structures selectively absorb the radiated out-of-phase energy and assure the desired propagation mode orientation. A compact hybrid structure is provided for combining large numbers of negative resistance devices with equal RF voltage, power and impedance characteristics. Input and output transitions, such as balun transformers are utilized for the two-port transmission amplifier. A single-port reflection type amplifier also incorporated the invention.
Inventors
- 👤 K Dudley
- 👤 Master G Mac
- 👤 L Nichols
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 09:59
CPC Classifications
H; H03; H03F; H03F3/00; H03F3/04; H03F3/10
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
124 words
A composite wave nonresonant electromagnetic energy amplifier device comprising: coaxial waveguide input and output energy coupling means having center conductors; a circular array of spaced electrically isolated wire transmission lines disposed between said input and output coupling means in a direction parallel to the longitudinal axis of said coaxial waveguides; transition and impedance matching means electrically interconnecting said center conductors to each transmission line; a plurality of DC biased negative resistance semiconductor devices electrically coupled between said lines in a direction transverse to the longitudinal waveguide axis; coaxial resistive loading means disposed inside and outside of said lines to attenuate radiated out-of-phase energy propagating in said lines to provide a single coaxial TEM propagation mode for the combined amplified energy in said output means.
Claim 2
Dependent Claim
124 words
A composite wave nonresonant electromagnetic energy amplifier device comprising: coaxial waveguide input and output energy coupling means having center conductors; a circular array of spaced electrically isolated wire transmission lines disposed between said input and output coupling means in a direction parallel to the longitudinal axis of said coaxial waveguides; transition and impedance matching means electrically interconnecting said center conductors to each transmission line; a plurality of DC biased negative resistance semiconductor devices electrically coupled between said lines in a direction transverse to the longitudinal waveguide axis; coaxial resistive loading means disposed inside and outside of said lines to attenuate radiated out-of-phase energy propagating in said lines to provide a single coaxial TEM propagation mode for the combined amplified energy in said output means.
Claim 3
Dependent Claim
16 words
The device according to claim 1 wherein said transition and transformation means comprise a balun transformer.
Claim 4
Dependent Claim
22 words
The device according to claim 2 wherein said balun transformer comprises a plurality of pie-shaped segments joined together in a cylindrical configuration.
Claim 5
Dependent Claim
26 words
The device according to claim 3 wherein each segment defines at least one wall member supporting substantially a one-half section of said parallel wire transmission line.
Claim 6
Dependent Claim
24 words
The device according to claim 1 wherein said negative resistance devices incorporate a bellows arrangement to contact a predetermined alternate parallel wire transmission lines.
Claim 7
Dependent Claim
130 words
A compositive wave reflection type electromagnetic energy amplifier device comprising: a common coaxial waveguide input and output energy coupling means having a center conductor; a circular array of spaced electrically isolated wire transmission lines extending parallel to the longitudinal axis of said waveguide; transition and impedance matching means electrically interconnecting said center conductor to each transmission line; a plurality of DC biased negative resistance semi-conductor devices disposed betweEn said lines in a direction transverse to the longitudinal waveguide axis; coaxial resistive loading means disposed inside and outside of said lines to attenuate radiated out-of-phase energy propagating in said lines to provide a single coaxial TEM propagation mode for the combined amplified energy in said output means; and a circular conductive shorting plate member joined to alternate parallel wire transmission lines.
Claim 8
Dependent Claim
130 words
A compositive wave reflection type electromagnetic energy amplifier device comprising: a common coaxial waveguide input and output energy coupling means having a center conductor; a circular array of spaced electrically isolated wire transmission lines extending parallel to the longitudinal axis of said waveguide; transition and impedance matching means electrically interconnecting said center conductor to each transmission line; a plurality of DC biased negative resistance semi-conductor devices disposed betweEn said lines in a direction transverse to the longitudinal waveguide axis; coaxial resistive loading means disposed inside and outside of said lines to attenuate radiated out-of-phase energy propagating in said lines to provide a single coaxial TEM propagation mode for the combined amplified energy in said output means; and a circular conductive shorting plate member joined to alternate parallel wire transmission lines.
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) | 1976-09-24 | 1977-03-26 | 1977-09-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-24 | 1981-03-26 | 1981-09-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-24 | 1985-03-26 | 1985-09-25 | $7700.00 | Window Closed / Lapsed |