GB585746A - Radio antenna system and associated thermionic valve generator - Google Patents

Radio antenna system and associated thermionic valve generator

Info

Publication number
GB585746A
GB585746A GB20346/44A GB2034644A GB585746A GB 585746 A GB585746 A GB 585746A GB 20346/44 A GB20346/44 A GB 20346/44A GB 2034644 A GB2034644 A GB 2034644A GB 585746 A GB585746 A GB 585746A
Authority
GB
United Kingdom
Prior art keywords
valve
circuit
condenser
line
oscillation
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
GB20346/44A
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 GB585746A publication Critical patent/GB585746A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04K—SECRET COMMUNICATION; JAMMING OF COMMUNICATION
    • H04K3/00—Jamming of communication; Counter-measures
    • H04K3/40—Jamming having variable characteristics
    • H04K3/42—Jamming having variable characteristics characterized by the control of the jamming frequency or wavelength
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q11/00—Electrically-long antennas having dimensions more than twice the shortest operating wavelength and consisting of conductive active radiating elements
    • H01Q11/02—Non-resonant antennas, e.g. travelling-wave antenna
    • H01Q11/06—Rhombic antennas; V-antennas
    • 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
    • H03B5/08—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance
    • H03B5/10—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being vacuum tube
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04K—SECRET COMMUNICATION; JAMMING OF COMMUNICATION
    • H04K2203/00—Jamming of communication; Countermeasures
    • H04K2203/30—Jamming or countermeasure characterized by the infrastructure components
    • H04K2203/32—Jamming or countermeasure characterized by the infrastructure components including a particular configuration of antennas

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Transmitters (AREA)
  • Channel Selection Circuits, Automatic Tuning Circuits (AREA)

Abstract

585,746. Valve generating circuits; aerials. STANDARD TELEPHONES & CABLES, Ltd. Oct. 20, 1944, No. 20346. Convention date, Jan. 5. [Class 40 (v)] In a combined oscillator and rhombic aerial system, a feed-back circuit between the anodecathode and grid-cathode circuits of the valve includes the conductors of the rhombic. The oscillator valve 1, tuned by inductance 9 and condenser 10, feeds over a coupling coil and transmission line 13 the rhombic aerial 14. The remote end feeds through the transmission line 15 and artificial line 15<1> a coil 21 coupled to the cathode isolating coils 24, 25 to maintain the circuit in oscillation. The main tuning control is variable condenser 10, the adjustment of the artificial line 15<1> giving a fine control. The grid of valve 1 is held effectively at earth potential by the condenser 8. When employed as a jamming transmitter, contact arm 30 is rotated in synchronism with condenser 10 and the coupling of the coils comprising the artificial line 15'. By this means, all frequencies in the band are radiated, except those corresponding to the position of condenser 10 when arm 30 is in the gap between contacts 31, the breaking of the cathode circuit causing valve 1 to cease oscillating. The frequency of oscillation may also be adjusted by changing the lengths of the transmission lines, or by coupling a tuned circuit to one of the lines or by inserting a dielectric between the conductors comprising the line. The resonant anode circuit may consist of a short-circuited line, the transmission line 13' being coupled by condensers. In a modification, Fig. 2 (not shown), valve 1 is connected in a neutralized circuit. In a further modification, Fig. 5 (not shown), the valve 1 operates as a power amplifier stage, driven by a crystal-controlled oscillator, the feed-back being insufficient for self-oscillation.
GB20346/44A 1944-01-05 1944-10-20 Radio antenna system and associated thermionic valve generator Expired GB585746A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US517001A US2393656A (en) 1944-01-05 1944-01-05 Radio antenna system

Publications (1)

Publication Number Publication Date
GB585746A true GB585746A (en) 1947-02-21

Family

ID=24057966

Family Applications (1)

Application Number Title Priority Date Filing Date
GB20346/44A Expired GB585746A (en) 1944-01-05 1944-10-20 Radio antenna system and associated thermionic valve generator

Country Status (4)

Country Link
US (1) US2393656A (en)
BE (1) BE474202A (en)
CH (1) CH257591A (en)
GB (1) GB585746A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE464416A (en) * 1945-04-09
US2642530A (en) * 1948-04-03 1953-06-16 Honeywell Regulator Co Control apparatus

Also Published As

Publication number Publication date
US2393656A (en) 1946-01-29
CH257591A (en) 1948-10-15
BE474202A (en)

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