ES345494A1 - Ultra-high frequency oscillators - Google Patents
Ultra-high frequency oscillatorsInfo
- Publication number
- ES345494A1 ES345494A1 ES345494A ES345494A ES345494A1 ES 345494 A1 ES345494 A1 ES 345494A1 ES 345494 A ES345494 A ES 345494A ES 345494 A ES345494 A ES 345494A ES 345494 A1 ES345494 A1 ES 345494A1
- Authority
- ES
- Spain
- Prior art keywords
- inner conductor
- wall
- resistance
- feedback loop
- tuning capacitor
- 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
- H03B5/1805—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 coaxial resonator
-
- 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
- H03B2201/00—Aspects of oscillators relating to varying the frequency of the oscillations
- H03B2201/01—Varying the frequency of the oscillations by manual means
- H03B2201/011—Varying the frequency of the oscillations by manual means the means being an element with a variable capacitance
-
- 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
- H03B2201/00—Aspects of oscillators relating to varying the frequency of the oscillations
- H03B2201/03—Varying beside the frequency also another parameter of the oscillator in dependence on the frequency
-
- 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
- H03B2202/00—Aspects of oscillators relating to reduction of undesired oscillations
- H03B2202/05—Reduction of undesired oscillations through filtering or through special resonator characteristics
Landscapes
- Inductance-Capacitance Distribution Constants And Capacitance-Resistance Oscillators (AREA)
- Machines For Laying And Maintaining Railways (AREA)
Abstract
The invention relates to an oscillator of the type comprising a grounded base transistor and a cavity resonator having an inner conductor L 1 connected to the wall of the resonator and to a variable tuning capacitor C, the base electrode being A.C. connected to the wall, the collector to the inner conductor and the emitter through a feedback loop L 2 to the wall and through feedback capacitance Cf (interelectrode or added) to the collector. According to the invention the feedback loop passes parallel to the inner conductor in a direction towards the emitter which is the same as the direction along the inner conductor from its wall connection to the tuning capacitor, the loop including a resistance R. With the feedback loop connected in this sense and with the inclusion of the resistance operation is reliable in a range extending well above the cut-off frequency of the transistor. The resistance also serves to prevent spurious oscillations due to negative resistance introduced by base lead inductance. The tuning capacitor may be a variable capacity tuning diode.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NL6613714A NL6613714A (en) | 1966-09-29 | 1966-09-29 |
Publications (1)
Publication Number | Publication Date |
---|---|
ES345494A1 true ES345494A1 (en) | 1968-11-16 |
Family
ID=19797795
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ES345494A Expired ES345494A1 (en) | 1966-09-29 | 1967-09-27 | Ultra-high frequency oscillators |
Country Status (9)
Country | Link |
---|---|
AT (1) | AT270746B (en) |
BE (1) | BE704389A (en) |
DE (1) | DE1591332A1 (en) |
DK (1) | DK117083B (en) |
ES (1) | ES345494A1 (en) |
GB (1) | GB1129799A (en) |
NL (1) | NL6613714A (en) |
NO (1) | NO118386B (en) |
SE (1) | SE320704B (en) |
-
1966
- 1966-09-29 NL NL6613714A patent/NL6613714A/xx unknown
-
1967
- 1967-09-13 DE DE19671591332 patent/DE1591332A1/en active Pending
- 1967-09-26 GB GB4378367A patent/GB1129799A/en not_active Expired
- 1967-09-26 AT AT872867A patent/AT270746B/en active
- 1967-09-26 NO NO16986667A patent/NO118386B/no unknown
- 1967-09-26 DK DK479267A patent/DK117083B/en unknown
- 1967-09-26 SE SE13225/67A patent/SE320704B/xx unknown
- 1967-09-27 BE BE704389D patent/BE704389A/xx unknown
- 1967-09-27 ES ES345494A patent/ES345494A1/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
DE1591332A1 (en) | 1970-12-17 |
DK117083B (en) | 1970-03-16 |
GB1129799A (en) | 1968-10-09 |
NO118386B (en) | 1969-12-22 |
SE320704B (en) | 1970-02-16 |
AT270746B (en) | 1969-05-12 |
NL6613714A (en) | 1968-04-01 |
BE704389A (en) | 1968-03-27 |
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