US4162458A
Expired / Lapsed
US
⏱️ 0.0 years remaining
TM coaxial cavity oscillator and power combiner
Assignee: Motorola Solutions Inc
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Filing: 1978-05-26
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Granted: 1979-07-24
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Expires: 1998-05-26
Abstract
Abstract In an oscillator or power combiner of the type operating at microwave, millimeter wave and above, apparatus for increasing the size, so that one or more active devices can be coupled to the oscillator, including a TM coaxial cavity operating at a predetermined frequency, which cavity has an output coupled thereto for removing power, and a second cavity operating at a dominant mode and coupled to the TM coaxial cavity, which second cavity assures efficient and spurious free operation of the oscillator or power combiner at the desired frequency.
Inventors
- 👤 Michael Dydyk
- 👤 Joseph R. Tuzzolino
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 10:58
CPC Classifications
H; H03; H03B; H03B9/00; H03B9/12; H03B9/14; H03B9/143
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
100 words
In oscillatory apparatus for frequencies on the order of microwave, millimeter wave and above, including primary oscillatory circuitry having an active device coupled into said circuitry for sustaining oscillations therein and a first resonant circuit tuned to have an operating mode at a predetermined frequency, a second resonant circuit tuned to operate at the predetermined frequency and coupled to said primary oscillatory circuitry for controlling oscillations therein to the predetermined frequency, and output means coupled to said first resonant circuit for removing power therefrom at the predetermined frequency, the improvement comprising a TM coaxial cavity forming the first resonant circuit.
Claim 2
Dependent Claim
100 words
In oscillatory apparatus for frequencies on the order of microwave, millimeter wave and above, including primary oscillatory circuitry having an active device coupled into said circuitry for sustaining oscillations therein and a first resonant circuit tuned to have an operating mode at a predetermined frequency, a second resonant circuit tuned to operate at the predetermined frequency and coupled to said primary oscillatory circuitry for controlling oscillations therein to the predetermined frequency, and output means coupled to said first resonant circuit for removing power therefrom at the predetermined frequency, the improvement comprising a TM coaxial cavity forming the first resonant circuit.
Claim 3
Dependent Claim
20 words
Oscillatory apparatus as claimed in claim 1 wherein a plurality of active devices are included in the primary oscillatory circuitry.
Claim 4
Dependent Claim
127 words
Oscillatory apparatus for frequencies on the order of microwave, millimeter and above, comprising: (a) an active device having a negative resistance region of operation; (b) a TM coaxial resonant cavity designed to operate at a predetermined frequency within the region of operation of said active device; (c) a second resonant cavity formed to have a dominant mode of operation at the predetermined frequency; (d) coupling apparatus for coupling said active device and said TM coaxial and second resonant cavities, said coupling apparatus including means for supplying operating power to said active device and said coupling apparatus being constructed for controlling oscillations in the oscillatory apparatus to the predetermined frequency; and (e) output means coupled to said TM coaxial cavity for removing power therefrom at the predetermined frequency.
Claim 5
Dependent Claim
127 words
Oscillatory apparatus for frequencies on the order of microwave, millimeter and above, comprising: (a) an active device having a negative resistance region of operation; (b) a TM coaxial resonant cavity designed to operate at a predetermined frequency within the region of operation of said active device; (c) a second resonant cavity formed to have a dominant mode of operation at the predetermined frequency; (d) coupling apparatus for coupling said active device and said TM coaxial and second resonant cavities, said coupling apparatus including means for supplying operating power to said active device and said coupling apparatus being constructed for controlling oscillations in the oscillatory apparatus to the predetermined frequency; and (e) output means coupled to said TM coaxial cavity for removing power therefrom at the predetermined frequency.
Claim 6
Dependent Claim
18 words
Oscillatory apparatus as claimed in claim 3 wherein a plurality of active devices are coupled into the apparatus.
Claim 7
Dependent Claim
57 words
Oscillatory apparatus as claimed in claim 3 wherein the active device is coupled to the TM coaxial and second resonant cavities by means including an equalizing network constructed so that the impedances of the TM coaxial and second cavities at the active device are directly proportional to the loading of the TM coaxial and second cavities, respectively.
Claim 8
Dependent Claim
17 words
Oscillatory apparatus as claimed in claim 5 wherein the coupling apparatus includes a section of coaxial line.
Claim 9
Dependent Claim
77 words
Oscillatory apparatus as claimed in claim 6 wherein the active device is mounted adjacent one end of the section of coaxial line, the TM coaxial cavity is coupled to said section of coaxial line at a distance determined by the equalizing network, and the second cavity is coupled to said section of coaxial line at a distance from said TM coaxial cavity equal to N one-quarter wavelengths of the predetermined frequency, where N is an odd integer.
Claim 10
Dependent Claim
43 words
Oscillatory apparatus as claimed in claim 7 wherein a plurality of active devices are coupled to the TM coaxial cavity by a plurality of sections of coaxial line and to a plurality of second cavities by said plurality of sections of coaxial lines.
Claim 11
Dependent Claim
89 words
Oscillatory apparatus for frequencies on the order of microwave, millimeter wave and above, comprising primary oscillatory circuitry including an active device coupled into said circuitry for sustaining oscillations therein and a TM coaxial cavity tuned to have a higher mode of operation at a predetermined frequency, a second resonant cavity tuned to operate at the predetermined frequency and coupled to said primary oscillatory circuitry for controlling oscillations therein to the predetermined frequency, and output means coupled to said TM coaxial cavity for removing power therefrom at the predetermined frequency.
Claim 12
Dependent Claim
89 words
Oscillatory apparatus for frequencies on the order of microwave, millimeter wave and above, comprising primary oscillatory circuitry including an active device coupled into said circuitry for sustaining oscillations therein and a TM coaxial cavity tuned to have a higher mode of operation at a predetermined frequency, a second resonant cavity tuned to operate at the predetermined frequency and coupled to said primary oscillatory circuitry for controlling oscillations therein to the predetermined frequency, and output means coupled to said TM coaxial cavity for removing power therefrom at the predetermined frequency.
Claim 13
Dependent Claim
59 words
Oscillatory apparatus as claimed in claim 9 wherein the active device is coupled to the TM coaxial cavity and the second resonant cavity by means including an equalizing network constructed so that the impedances of the TM coaxial and second cavities at the active device are directly proportional to the loading of the TM coaxial and second cavities, respectively.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-07-23 | 1983-01-22 | 1983-07-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-07-23 | 1987-01-22 | 1987-07-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-07-23 | 1991-01-22 | 1991-07-24 | $7700.00 | Window Closed / Lapsed |