GB492610A - Improvements in or relating to high frequency oscillators - Google Patents
Improvements in or relating to high frequency oscillatorsInfo
- Publication number
- GB492610A GB492610A GB836737A GB836737A GB492610A GB 492610 A GB492610 A GB 492610A GB 836737 A GB836737 A GB 836737A GB 836737 A GB836737 A GB 836737A GB 492610 A GB492610 A GB 492610A
- Authority
- GB
- United Kingdom
- Prior art keywords
- resonator
- leads
- length
- bridge
- conductors
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03B—GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
- H03B5/00—Generation of oscillations using amplifier with regenerative feedback from output to input
- H03B5/18—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising distributed inductance and capacitance
- H03B5/1817—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising distributed inductance and capacitance the frequency-determining element being a cavity resonator
- H03B5/1835—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising distributed inductance and capacitance the frequency-determining element being a cavity resonator the active element in the amplifier being a vacuum tube
Landscapes
- Microwave Tubes (AREA)
Abstract
492,610. Valve generating circuits; electric resonators. GENERAL ELECTRIC CO., Ltd., and MEGAW, E. C. S. March 22, 1937, No. 8367. [Classes 40 (iii) and 40 (v)] An oscillator, for example, a split-anode magnetron, particularly for generating very high frequencies, has a pair of electrodes connected to points on a resonator having capacity and inductance (which may be distributed) by a pair of leads the length of which is adjustable so that the system comprising electrodes, leads, and resonator may oscillate as a whole at the desired frequency. In one arrangement, Fig. 1 (Prov.), the resonator comprises parallel conductors 9, 10 having a fixed bridge 11 at one end and a movable bridge 12 to tune it to the desired frequency. The lengths of the leads 5, 6 are adjusted by telescopic members so that the points 7, 8 are at the first potential node, i.e. the electrical length of the leads is one-quarter of a wave-length. The production of harmonics may be prevented by connecting resistances shunted by small inductances in the leads 5, 6 close to the generator. The load circuit 13 is connected across the resonator by tappings 16, 17. In a modification, Fig. 2 (Prov.) (not shown), the bridge 11 is replaced by a variable condenser to the terminals of which the leads 5, 6 are permanently connected. In a third arrangement shown in Fig. 1 (Comp.), the resonator is of fixed frequency and comprises coaxial tubes 5, 6 connected at one end by a grounded plate 7. The magnetron comprises four anode sections connected together in pairs and to conductors 9, 10 having their lengths adjusted by a bridge 11 to threequarters of the wave-length of the fundamental frequency. One connection from a generator electrode to the resonator takes place through ground at 8 and on the cathode the other comprises part of conductor 10 and lead 13 to a point 14 on the inner tube and the length of this connection is adjustable by telescopic means or by varying point 12. This system oscillates at three times the fundamental frequency and the fundamental may be suppressed by connecting a choke across terminals 2, 3. The load may be connected to the resonator or to conductors 9, 10. The resonator tubes may be of copper or steel plated with silver, and suitable dimensions are given in the Specification. Specification 417,564 is referred to.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB836737A GB492610A (en) | 1937-03-22 | 1937-03-22 | Improvements in or relating to high frequency oscillators |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB836737A GB492610A (en) | 1937-03-22 | 1937-03-22 | Improvements in or relating to high frequency oscillators |
Publications (1)
Publication Number | Publication Date |
---|---|
GB492610A true GB492610A (en) | 1938-09-22 |
Family
ID=9851177
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB836737A Expired GB492610A (en) | 1937-03-22 | 1937-03-22 | Improvements in or relating to high frequency oscillators |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB492610A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2562342A (en) * | 1946-02-18 | 1951-07-31 | Oliver I Steigerwalt | Transmitter output coupling circuit |
US2564005A (en) * | 1945-06-23 | 1951-08-14 | Halpern Julius | Automatic frequency control system |
-
1937
- 1937-03-22 GB GB836737A patent/GB492610A/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2564005A (en) * | 1945-06-23 | 1951-08-14 | Halpern Julius | Automatic frequency control system |
US2562342A (en) * | 1946-02-18 | 1951-07-31 | Oliver I Steigerwalt | Transmitter output coupling circuit |
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