GB604582A - Directive antenna system and associated thermionic valve generator - Google Patents

Directive antenna system and associated thermionic valve generator

Info

Publication number
GB604582A
GB604582A GB33903/45A GB3390345A GB604582A GB 604582 A GB604582 A GB 604582A GB 33903/45 A GB33903/45 A GB 33903/45A GB 3390345 A GB3390345 A GB 3390345A GB 604582 A GB604582 A GB 604582A
Authority
GB
United Kingdom
Prior art keywords
transformer
valve
aerial
cathode
frequency modulating
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
GB33903/45A
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 GB604582A publication Critical patent/GB604582A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H2/00—Networks using elements or techniques not provided for in groups H03H3/00 - H03H21/00
    • H03H2/005—Coupling circuits between transmission lines or antennas and transmitters, receivers or amplifiers
    • H03H2/006—Transmitter or amplifier output circuits
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S1/00—Beacons or beacon systems transmitting signals having a characteristic or characteristics capable of being detected by non-directional receivers and defining directions, positions, or position lines fixed relatively to the beacon transmitters; Receivers co-operating therewith
    • G01S1/02—Beacons or beacon systems transmitting signals having a characteristic or characteristics capable of being detected by non-directional receivers and defining directions, positions, or position lines fixed relatively to the beacon transmitters; Receivers co-operating therewith using radio waves
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/52—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure
    • H01Q1/521—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure reducing the coupling between adjacent antennas
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03C—MODULATION
    • H03C3/00—Angle modulation
    • H03C3/10—Angle modulation by means of variable impedance
    • H03C3/12—Angle modulation by means of variable impedance by means of a variable reactive element
    • H03C3/18—Angle modulation by means of variable impedance by means of a variable reactive element the element being a current-dependent inductor

Abstract

604,582. Valve generating and frequency modulating circuits ; aerials. STANDARD TELEPHONES & CABLES, Ltd. Dec. 14, 1945, No. 33903. Convention date, April 9. [Classes 40 (v), 40 (vi) and 40 (vii)] A combined oscillation generator and aerial system comprises a grounded grid oscillator with the anode circuit coupled to the cathode circuit by a feedback loop including the aerial. Valve 1 feeds over tuned circuit 4, 5 the centre tap of transformer 7, energy passing along and being radiated from the parallel wire aerial 8, 9 to the transformer 10 which presents the surge impedance to the line. The current flowing in the secondary of transformer 10 induces a voltage in the primary which travels back to transformer 7 without appreciable loss since the potentials on the two wires 8, 9 are out of phase, the secondary voltage being applied to the cathode of valve 1 to maintain oscillation. In a modification, Fig. 2 (not shown) compensating capacitors are included in the lines 8, 9 to make the velocity of the propagation of the current more nearly equal to the radiated wave velocity. The feedback from the secondary of transformer 10 also includes an adjustable artificial line. In a further modification, Fig. 3, the effective inductance of the transformer 18 is varied by applying a signal to the valve 42 to vary its impedance which shunts the secondary, thus frequency modulating the oscillations. Specification 585,746 is referred to.
GB33903/45A 1945-04-09 1945-12-14 Directive antenna system and associated thermionic valve generator Expired GB604582A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US587239A US2480164A (en) 1945-04-09 1945-04-09 Feedback antenna system

Publications (1)

Publication Number Publication Date
GB604582A true GB604582A (en) 1948-07-06

Family

ID=24348969

Family Applications (1)

Application Number Title Priority Date Filing Date
GB33903/45A Expired GB604582A (en) 1945-04-09 1945-12-14 Directive antenna system and associated thermionic valve generator

Country Status (4)

Country Link
US (1) US2480164A (en)
BE (1) BE464416A (en)
ES (1) ES179050A1 (en)
GB (1) GB604582A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2810906A (en) * 1951-08-29 1957-10-22 Leonard J Lynch Electronic antenna

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1986623A (en) * 1931-03-21 1935-01-01 Rca Corp Signaling apparatus
DE738032C (en) * 1937-05-05 1943-07-31 Telefunken Gmbh Antenna with advancing waves
US2262932A (en) * 1939-09-14 1941-11-18 Radio Patents Corp Frequency variation response system
US2297925A (en) * 1940-04-06 1942-10-06 Rca Corp Antenna system
US2396884A (en) * 1940-05-02 1946-03-19 Robinson James Radio receiving and transmitting system
US2290314A (en) * 1940-09-24 1942-07-21 Rca Corp Feedback system for traveling wave antennas
BE474202A (en) * 1944-01-05

Also Published As

Publication number Publication date
BE464416A (en)
ES179050A1 (en) 1947-10-01
US2480164A (en) 1949-08-30

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