US3721919A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High efficiency mode planar microcircuit high frequency signal generator
Assignee: Unisys Corp
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Filing: 1972-03-13
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Granted: 1973-03-20
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Expires: 1992-03-13
Abstract
Abstract An active high-efficiency-mode semiconductor diode is coupled for the generation of oscillating high frequency electromagnetic fields in a planar transmission line network, the apparatus taking the form of a single port, high frequency oscillator device. Oscillations are sustained by time delayed triggering phenomenon within the TRAPATT semiconductor diode.
Inventors
- 👤 M Grace
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 04:31
CPC Classifications
H; H03; H03B; H03B9/00; H03B9/12; H03B9/14; H03B9/147
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
239 words
A high frequency planar microcircuit oscillator comprising: ground plate heat sink means, dielectric sheet means bonded to said ground plate means, planar conductive circuit means having first and second transmission line sections bonded to said dielectric sheet means opposite said ground plate means, said first transmission line section having conductive coupling means coupled to said ground plate means, said second transmission line section including capacitor plate means capacitively coupled through said dielectric sheet means to said ground plate means, diode means conductively supported on said capacitor plate means and conductively coupled to said first transmission line section substantially at an electrical distance one half wave length at the fundamental operation frequency of said oscillator from said first transmission line section conductive coupling means coupled to said ground plate means, first stub transmission line means branching from said second transmissIon line section spaced from said diode means for series resonating said diode means at the third harmonic of said fundamental frequency, second stub transmission line means branching from said second transmission line section spaced from said first transmission line means and from said diode means for series resonating said diode means at the second harmonic of said fundamental frequency, and impedance matching transformer means branching from said second transmission line section and spaced from said first and second branching stub transmission line means for matching said oscillator to utilization means for efficient transfer of signals of said fundamental frequency thereto.
Claim 2
Dependent Claim
239 words
A high frequency planar microcircuit oscillator comprising: ground plate heat sink means, dielectric sheet means bonded to said ground plate means, planar conductive circuit means having first and second transmission line sections bonded to said dielectric sheet means opposite said ground plate means, said first transmission line section having conductive coupling means coupled to said ground plate means, said second transmission line section including capacitor plate means capacitively coupled through said dielectric sheet means to said ground plate means, diode means conductively supported on said capacitor plate means and conductively coupled to said first transmission line section substantially at an electrical distance one half wave length at the fundamental operation frequency of said oscillator from said first transmission line section conductive coupling means coupled to said ground plate means, first stub transmission line means branching from said second transmissIon line section spaced from said diode means for series resonating said diode means at the third harmonic of said fundamental frequency, second stub transmission line means branching from said second transmission line section spaced from said first transmission line means and from said diode means for series resonating said diode means at the second harmonic of said fundamental frequency, and impedance matching transformer means branching from said second transmission line section and spaced from said first and second branching stub transmission line means for matching said oscillator to utilization means for efficient transfer of signals of said fundamental frequency thereto.
Claim 3
Dependent Claim
41 words
Apparatus as described in claim 1 wherein at least a portion of said dielectric sheet means beneath said capacitor plate means and said diode means comprises diamond for conveying heat from said diode means to said ground plate heat sink means.
Claim 4
Dependent Claim
42 words
Apparatus as described in claim 1 wherein at least a portion of said dielectric sheet means beneath said capacitor plate means and said diode means comprises beryllium oxide for conveying heat from said diode means to said ground plate heat sink means.
Claim 5
Dependent Claim
17 words
Apparatus as described in claim 1 wherein said diode means comprises trapped plasma triggered transit diode means.
Claim 6
Dependent Claim
33 words
Apparatus as described in claim 1 wherein said first stub transmission line means is bonded to said dielectric sheet means and projects from said second transmission line section adjacent said capacitor plate means.
Claim 7
Dependent Claim
40 words
Apparatus as described in claim 5 wherein said second stub transmission line means is bonded to said dielectric sheet means and projects from said second transmission line section adjacent said first stub transmission line means opposite said capacitor plate means.
Claim 8
Dependent Claim
39 words
Apparatus as described in claim 6 wherein said impedance matching transformer means comprises an enlarged portion of said second transmission line section of length equal to one quarter wave at said fundamental frequency in the direction of energy propagation.
Claim 9
Dependent Claim
25 words
Apparatus as described in claim 7 wherein said first and second stub transmission line means branch in opposite directions from said second transmission line section.
Claim 10
Dependent Claim
30 words
Apparatus as described in claim 1 including means connected to said second transmission line section and to said ground plate means for supply of bias current through said diode 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) | 1976-03-19 | 1976-09-18 | 1977-03-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-03-19 | 1980-09-18 | 1981-03-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-03-19 | 1984-09-18 | 1985-03-20 | $7700.00 | Window Closed / Lapsed |