GB454077A - Improvements in or relating to variable tuned circuits - Google Patents

Improvements in or relating to variable tuned circuits

Info

Publication number
GB454077A
GB454077A GB9179/36A GB917936A GB454077A GB 454077 A GB454077 A GB 454077A GB 9179/36 A GB9179/36 A GB 9179/36A GB 917936 A GB917936 A GB 917936A GB 454077 A GB454077 A GB 454077A
Authority
GB
United Kingdom
Prior art keywords
resonator
circuited
inner conductor
circuit
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
GB9179/36A
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.)
STC PLC
Original Assignee
Standard Telephone and Cables PLC
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 Standard Telephone and Cables PLC filed Critical Standard Telephone and Cables PLC
Publication of GB454077A publication Critical patent/GB454077A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
    • H01P7/00—Resonators of the waveguide type
    • H01P7/04—Coaxial resonators
    • 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

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

Abstract

454,077. Electric resonant circuits. STANDARD TELEPHONES & CABLES, Ltd., 63, Aldwych, London.-(Assignees of Crawford, A. B.) March 27, 1936, No. 9179. Convention date, May 17, 1935. [Class 40 (iii)] A resonator of the quarter-wave-length coaxial-cylinder type is tuned by moving one end or other of the inner conductor 1 away from the axis of the outer conductor 2, set screws 8 and slots 6 being provided for this purpose. Eccentricity of the inner conductor at the short-circuited end decreases the natural frequency while eccentricity at the open-circuited end diminishes that frequency. Electrical connection is made at 9, 10, and the resonator is short-circuited at the right-hand end, the block 4 being of conductive material. It is open-circuited at the left-hand end, the end part 5 of the inner conductor being a glass rod, while the spacer 3 is conductive. Alternatively the spacer 3 and associated screws 8 may be insulating, the glass rod 5 being dispensed with. One such resonator may be connected in the plate circuit and another in the grid circuit of a valve oscillator, Fig. 3 (not shown); or such a resonator may be connected in the cathodeearth circuit of a Barkhausen oscillator to act as a radio-frequency choke, Fig. 4 (not shown). Specification 283,651, [Class 40 (v)], is referred to.
GB9179/36A 1935-05-17 1936-03-27 Improvements in or relating to variable tuned circuits Expired GB454077A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US22037A US2116996A (en) 1935-05-17 1935-05-17 Variable tuned circuits

Publications (1)

Publication Number Publication Date
GB454077A true GB454077A (en) 1936-09-23

Family

ID=21807490

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9179/36A Expired GB454077A (en) 1935-05-17 1936-03-27 Improvements in or relating to variable tuned circuits

Country Status (4)

Country Link
US (1) US2116996A (en)
DE (1) DE715477C (en)
FR (1) FR808523A (en)
GB (1) GB454077A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1218024B (en) * 1965-01-29 1966-06-02 Rohde & Schwarz Arrangement for frequency tuning of line resonators

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2435585A (en) * 1941-12-20 1948-02-10 Bell Telephone Labor Inc High-frequency relay employing an electron discharge device
US2483189A (en) * 1944-09-13 1949-09-27 Hartford Nat Bank & Trust Comp Transmission line oscillator
US2531426A (en) * 1945-02-05 1950-11-28 Farnsworth Res Corp Ultra high frequency oscillation generator
BE515926A (en) * 1951-11-30
DE939940C (en) * 1952-09-09 1956-03-08 Rohde & Schwarz Line resonance circuit that can be tuned by varying the characteristic impedance
DE1177221B (en) * 1961-04-07 1964-09-03 Telefunken Patent Tuning device for high-frequency electrical oscillations
DE1183559B (en) * 1961-06-02 1964-12-17 R & E Hopt K G Tuning device for maximum frequencies
DE1186526B (en) * 1961-11-30 1965-02-04 Telefunken Patent Device for the isolated mounting of a trimmer capacitor

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1218024B (en) * 1965-01-29 1966-06-02 Rohde & Schwarz Arrangement for frequency tuning of line resonators

Also Published As

Publication number Publication date
FR808523A (en) 1937-02-09
US2116996A (en) 1938-05-10
DE715477C (en) 1941-12-22

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