GB647015A - Improvements in frequency control of high frequency oscillators - Google Patents

Improvements in frequency control of high frequency oscillators

Info

Publication number
GB647015A
GB647015A GB5943/48A GB594348A GB647015A GB 647015 A GB647015 A GB 647015A GB 5943/48 A GB5943/48 A GB 5943/48A GB 594348 A GB594348 A GB 594348A GB 647015 A GB647015 A GB 647015A
Authority
GB
United Kingdom
Prior art keywords
resonant
stub
load
oscillator
frequency
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
Application number
GB5943/48A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
US Department of Commerce
Original Assignee
US Department of Commerce
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by US Department of Commerce filed Critical US Department of Commerce
Publication of GB647015A publication Critical patent/GB647015A/en
Expired legal-status Critical Current

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
    • 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
    • H03B2201/014—Varying the frequency of the oscillations by manual means the means being associated with an element comprising distributed inductances and capacitances
    • H03B2201/015—Varying the frequency of the oscillations by manual means the means being associated with an element comprising distributed inductances and capacitances the element being a cavity
    • 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
    • H03B2201/031—Varying beside the frequency also another parameter of the oscillator in dependence on the frequency the parameter being the amplitude of a signal, e.g. maintaining a constant output amplitude over the frequency range
    • 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
    • H03B2202/08—Reduction of undesired oscillations originated from the oscillator in circuit elements external to the oscillator by means associated with the oscillator
    • H03B2202/082—Reduction of undesired oscillations originated from the oscillator in circuit elements external to the oscillator by means associated with the oscillator by avoiding coupling between these circuit elements
    • H03B2202/086—Reduction of undesired oscillations originated from the oscillator in circuit elements external to the oscillator by means associated with the oscillator by avoiding coupling between these circuit elements through a frequency dependent coupling, e.g. which attenuates a certain frequency range

Landscapes

  • Control Of Motors That Do Not Use Commutators (AREA)
  • Inductance-Capacitance Distribution Constants And Capacitance-Resistance Oscillators (AREA)

Abstract

647,015. High-frequency impedance networks. DEPARTMENT OF COMMERCE, DIRECTOR OF THE OFFICE OF TECHNICAL SERVICES OF. Feb. 27, 1948, No. 5943. Convention date, April 18, 1945. [Class 40 (viii)] An impedance arrangement for stabilizing a high-frequency low Q oscillator comprises a transmission line connecting the oscillator to a load with a number of high-Q resonators connected to the line in such a manner that the frequencies at which they are each resonant, effect maximum power transfer to the load. Alternatively a stub may be connected to the transmission line, terminated by absorptive material and provided with a resonant cavity communicating with the stub through an iris. As shown, the generator 22 is connected by a wave-guide 23 to load 23A. An intermediate section 24 of the guide is provided with a stub 25 terminated by a load 35 and having one or more resonant cavities 26, 27, 28, and 29, coupled thereto through apertures in the wall thereof and provided with tuning screws 33. The stub may be slid by a screw 32 along section 24. This unit produces practically zero attenuates when one of its cavities is resonant at an oscillator frequency, but produces attenuation at other frequencies. It thus tends to stabilize the oscillator at any of the frequencies of its resonant cavities.
GB5943/48A 1945-04-18 1948-02-27 Improvements in frequency control of high frequency oscillators Expired GB647015A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US647015XA 1945-04-18 1945-04-18

Publications (1)

Publication Number Publication Date
GB647015A true GB647015A (en) 1950-12-06

Family

ID=22057733

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5943/48A Expired GB647015A (en) 1945-04-18 1948-02-27 Improvements in frequency control of high frequency oscillators

Country Status (1)

Country Link
GB (1) GB647015A (en)

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