US3810037A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Traveling-wave type power addition circuit
Assignee: Kyoto University
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Filing: 1972-06-15
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Granted: 1974-05-07
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Expires: 1992-06-15
Abstract
Abstract A traveling-wave type power addition circuit has an original oscillator and a separate directional coupler, reflector and phase shifter associated with each additional oscillator such that a wave provided by the original oscillator is supplied to a subsequent directional coupler and a part of the wave is supplied to a subsequent reflector. Any reflected wave from the reflector is injected through the phase shifter to the additional oscillator. The synchronized output is passed through the directional coupler to a main line.
Inventors
- 👤 M Nakajima
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 09:33
CPC Classifications
H; H03; H03L; H03L7/00; H03L7/24
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
221 words
A microwave traveling-wave type power addition circuit, which comprises: a main solid-state microwave oscillator; a main transmission line for receiving the output of said main oscillator and for transmitting it to a load; and a power combination circuit which comprises an additive solidstate microwave oscillator having output power characteristics different from those of said main oscillator, directional coupling means disposed along said main transmission line between said main oscillator and said load for receiving output signals from said main oscillator and said additive oscillator, reflecting means connected to said directional coupling means for receiving part of said output signal from said main oscillator and reflecting it back through said directional coupling means to said additive oscillator, phase shifting means connected between said directional coupling means and said additive oscillator for adjusting the phase of the signals passing therethrough, and isolator means positioned between said main oscillator and said directional coupling means for preventing a feedback signal from said additive oscillator from reaching said main oscillator and for allowing the omission of the phase adjustment between either said additive oscillator or said reflecting means and said directional coupling means, the power output of said additive oscillator signal being combined in phase with the power output of said main oscillator signal, said combined signal passing through said directional coupling means towards said load.
Claim 2
Dependent Claim
221 words
A microwave traveling-wave type power addition circuit, which comprises: a main solid-state microwave oscillator; a main transmission line for receiving the output of said main oscillator and for transmitting it to a load; and a power combination circuit which comprises an additive solidstate microwave oscillator having output power characteristics different from those of said main oscillator, directional coupling means disposed along said main transmission line between said main oscillator and said load for receiving output signals from said main oscillator and said additive oscillator, reflecting means connected to said directional coupling means for receiving part of said output signal from said main oscillator and reflecting it back through said directional coupling means to said additive oscillator, phase shifting means connected between said directional coupling means and said additive oscillator for adjusting the phase of the signals passing therethrough, and isolator means positioned between said main oscillator and said directional coupling means for preventing a feedback signal from said additive oscillator from reaching said main oscillator and for allowing the omission of the phase adjustment between either said additive oscillator or said reflecting means and said directional coupling means, the power output of said additive oscillator signal being combined in phase with the power output of said main oscillator signal, said combined signal passing through said directional coupling means towards said load.
Claim 3
Dependent Claim
79 words
The microwave traveling-wave type power addition circuit according to claim 1 further comprising a plurality of said power combination circuits, each of which receives its input at its isolator means, said input signal comprising said combined signal from the directional coupler of the immediately preceding combination circuit, whereby the total power output of said circuit delivered to said load is substantially equal to the sum of the power outputs of said main oscillator and said plurality of additive oscillators.
Claim 4
Dependent Claim
35 words
The microwave traveling-wave type power addition circuit according to claim 2 wherein each of said plurality of reflecting means comprises a transmission line having a predetermined length that is short circuited at one end thereof.
Claim 5
Dependent Claim
34 words
The microwave traveling-wave type power addition circuit according to claim 3 wherein each of said plurality of phase shifting means comprises a transmission line whose length is selected to yield the desired phase shift.
Claim 6
Dependent Claim
31 words
The microwave traveling-wave type power addition circuit according to claim 4 wherein the output from said plurality of additive oscillators is automatically frequency-modulated by an FM signal from said main oscillator.
References Cited (Backward Citations)
US2803750A
Cited
US3633123A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-05-06 | 1977-11-05 | 1978-05-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-05-06 | 1981-11-05 | 1982-05-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-05-06 | 1985-11-05 | 1986-05-07 | $7700.00 | Window Closed / Lapsed |