US3743966A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Trapatt diode transmission line oscillator using time delayed triggering
Assignee: Unisys Corp
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Filing: 1972-02-09
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Granted: 1973-07-03
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Expires: 1992-02-09
Abstract
Abstract An active high-efficiency-mode semiconductor diode is coupled for the generation of oscillating high frequency electromagnetic fields in a transmission line network, the apparatus taking the form of a single port, high frequency oscillator device. Oscillations are sustained by using the time delayed triggering phenomenon in the TRAPPAT semiconductor diode.
Inventors
- 👤 M Grace
- 👤 H Pratt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 22:41
CPC Classifications
H; H03; H03B; H03B9/00; H03B9/12; H03B9/14; H03B9/145
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
192 words
A high frequency energy converter adapted to be coupled to utilization means comprising: transmission line means having first and second high frequency conductor means, conductive shorting means for mutually connecting said high frequency conductor means at one end of said transmission line means, semiconductor diode means shunt connected to capacitive means in said first high frequency conductor means, said diode means being centered at a distance substantially lambda /2 from said shorting means, where lambda is the operating fundamental wave length of said energy converter, third-harmonic choke means conductively associated with said transmission line means located substantially at a distance from said diode means such that said diode means is made series resonant thereby at said third harmonic, second-harmonic choke means conductively associated with said transmission line means located substantially at a distance from said diode means such that said diode means is made series resonant thereby at said second harmonic, and impedance matching means spaced in said transmission line means from said second harmonic choke means opposite said third harmonic choke means for matching said energy converter to said utilization means for efficient transfer of said fundamental wave length energy thereto.
Claim 2
Dependent Claim
192 words
A high frequency energy converter adapted to be coupled to utilization means comprising: transmission line means having first and second high frequency conductor means, conductive shorting means for mutually connecting said high frequency conductor means at one end of said transmission line means, semiconductor diode means shunt connected to capacitive means in said first high frequency conductor means, said diode means being centered at a distance substantially lambda /2 from said shorting means, where lambda is the operating fundamental wave length of said energy converter, third-harmonic choke means conductively associated with said transmission line means located substantially at a distance from said diode means such that said diode means is made series resonant thereby at said third harmonic, second-harmonic choke means conductively associated with said transmission line means located substantially at a distance from said diode means such that said diode means is made series resonant thereby at said second harmonic, and impedance matching means spaced in said transmission line means from said second harmonic choke means opposite said third harmonic choke means for matching said energy converter to said utilization means for efficient transfer of said fundamental wave length energy thereto.
Claim 3
Dependent Claim
17 words
Apparatus as described in claim 1 wherein said capacitive means is directly connected at said diode means.
Claim 4
Dependent Claim
18 words
Apparatus as described in claim 2 wherein said diode means comprises trapped plasma avalanche triggered transit diode means.
Claim 5
Dependent Claim
23 words
Apparatus as described in claim 2 wherein harmonic choke means comprises spaced resonant circuit means in series relation with said transmission line means.
Claim 6
Dependent Claim
24 words
Apparatus as described in claim 2 wherein said harmonic choke means comprises spaced resonant circuit means in shunt relation with said transmission line means.
Claim 7
Dependent Claim
28 words
Apparatus as described in claim 2 wherein said harmonic choke means comprises spaced radial transmission line means coupled in branching relation within said second high frequency conductor means.
Claim 8
Dependent Claim
26 words
Apparatus as described in claim 2 wherein said harmonic choke means comprises spaced folded choke means in conductive contact with said second high frequency conductor means.
Claim 9
Dependent Claim
28 words
Apparatus as described in claim 3 wherein said impedance matching means comprises a quarter wave length impedance discontinuity in conductive relation with said second high frequency conductor means.
References Cited (Backward Citations)
US3559097A
Cited
US3646357A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-07-02 | 1977-01-01 | 1977-07-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-02 | 1981-01-01 | 1981-07-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-02 | 1985-01-01 | 1985-07-03 | $7700.00 | Window Closed / Lapsed |