[go: up one dir, main page]

US2660709A - Mechanical modulator - Google Patents

Mechanical modulator Download PDF

Info

Publication number
US2660709A
US2660709A US255766A US25576651A US2660709A US 2660709 A US2660709 A US 2660709A US 255766 A US255766 A US 255766A US 25576651 A US25576651 A US 25576651A US 2660709 A US2660709 A US 2660709A
Authority
US
United States
Prior art keywords
line
modulator
gap
conductor
conductors
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 - Lifetime
Application number
US255766A
Other languages
English (en)
Inventor
Hampshire Robert Armitage
Iden Floyd William
Peter L Hancock
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
Federal Telephone and Radio Corp
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
Priority to IT500059D priority Critical patent/IT500059A/it
Priority to BE515436D priority patent/BE515436A/xx
Application filed by Standard Telephone and Cables PLC filed Critical Standard Telephone and Cables PLC
Priority to US255766A priority patent/US2660709A/en
Priority to GB25438/52A priority patent/GB707520A/en
Priority to DEI6543A priority patent/DE939881C/de
Priority to CH309360D priority patent/CH309360A/de
Priority to FR1066424D priority patent/FR1066424A/fr
Application granted granted Critical
Publication of US2660709A publication Critical patent/US2660709A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03C—MODULATION
    • H03C7/00—Modulating electromagnetic waves
    • H03C7/02—Modulating electromagnetic waves in transmission lines, waveguides, cavity resonators or radiation fields of antennas
    • 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
    • H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Electromagnetism (AREA)
  • Variable-Direction Aerials And Aerial Arrays (AREA)
  • Transmitters (AREA)
US255766A 1951-11-10 1951-11-10 Mechanical modulator Expired - Lifetime US2660709A (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
IT500059D IT500059A (xx) 1951-11-10
BE515436D BE515436A (xx) 1951-11-10
US255766A US2660709A (en) 1951-11-10 1951-11-10 Mechanical modulator
GB25438/52A GB707520A (en) 1951-11-10 1952-10-10 Radio modulators comprising variable reactors in aerial feed circuits
DEI6543A DE939881C (de) 1951-11-10 1952-11-07 Mechanischer Modulator
CH309360D CH309360A (de) 1951-11-10 1952-11-10 Modulator.
FR1066424D FR1066424A (fr) 1951-11-10 1952-11-10 Modulateur mécanique

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US255766A US2660709A (en) 1951-11-10 1951-11-10 Mechanical modulator

Publications (1)

Publication Number Publication Date
US2660709A true US2660709A (en) 1953-11-24

Family

ID=22969760

Family Applications (1)

Application Number Title Priority Date Filing Date
US255766A Expired - Lifetime US2660709A (en) 1951-11-10 1951-11-10 Mechanical modulator

Country Status (7)

Country Link
US (1) US2660709A (xx)
BE (1) BE515436A (xx)
CH (1) CH309360A (xx)
DE (1) DE939881C (xx)
FR (1) FR1066424A (xx)
GB (1) GB707520A (xx)
IT (1) IT500059A (xx)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2840700A (en) * 1954-06-30 1958-06-24 Jewel D Browder Electrode very low frequency radio receiving antenna for submarines
US2857553A (en) * 1956-02-23 1958-10-21 Gordon Van B King Spiral sweep generator
US3484786A (en) * 1965-06-02 1969-12-16 Montages Electr Atel Modulated wave mechanical generator
US5839062A (en) * 1994-03-18 1998-11-17 The Regents Of The University Of California Mixing, modulation and demodulation via electromechanical resonators

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2244756A (en) * 1939-08-03 1941-06-10 Internat Telephone Dev Co Inc Modulation system
US2368693A (en) * 1942-07-04 1945-02-06 Standard Telephones Cables Ltd Modulation system
US2434917A (en) * 1943-11-06 1948-01-27 Standard Telephones Cables Ltd Mechanical modulator

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2228692A (en) * 1938-10-14 1941-01-14 Washington Inst Of Technology Load stabilizing means for modulation systems

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2244756A (en) * 1939-08-03 1941-06-10 Internat Telephone Dev Co Inc Modulation system
US2368693A (en) * 1942-07-04 1945-02-06 Standard Telephones Cables Ltd Modulation system
US2434917A (en) * 1943-11-06 1948-01-27 Standard Telephones Cables Ltd Mechanical modulator

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2840700A (en) * 1954-06-30 1958-06-24 Jewel D Browder Electrode very low frequency radio receiving antenna for submarines
US2857553A (en) * 1956-02-23 1958-10-21 Gordon Van B King Spiral sweep generator
US3484786A (en) * 1965-06-02 1969-12-16 Montages Electr Atel Modulated wave mechanical generator
US5839062A (en) * 1994-03-18 1998-11-17 The Regents Of The University Of California Mixing, modulation and demodulation via electromechanical resonators

Also Published As

Publication number Publication date
FR1066424A (fr) 1954-06-04
DE939881C (de) 1956-03-08
BE515436A (xx) 1900-01-01
GB707520A (en) 1954-04-21
CH309360A (de) 1955-08-31
IT500059A (xx) 1900-01-01

Similar Documents

Publication Publication Date Title
US2244756A (en) Modulation system
US1691338A (en) Aerial system
US2656839A (en) Electrotherapeutic oscillator
US2310695A (en) Oscillating system
US2261879A (en) High frequency by-pass arrangement
US2660709A (en) Mechanical modulator
US3196443A (en) Circularly polarized dipole antenna
US2198025A (en) Modulation system
US2210491A (en) High frequency antenna
US1955093A (en) Oscillation circuit for electric waves
US2411034A (en) Lobe switching antenna
US2427107A (en) Centimeter wave apparatus
US2393785A (en) Carrier modulation
US2447879A (en) Antenna
US2266500A (en) Energy transfer circuits
US2232592A (en) Modulation system
US2207781A (en) Ultra high frequency antenna
US2259510A (en) Coupling arrangement for high frequency transmission systems
US2687475A (en) Low-frequency antenna
US2321456A (en) Short-wave keying device
US2365453A (en) Short wave transmission line balancing system
US2395441A (en) Modulator circuit
US2408779A (en) High-frequency coaxial distributor and system
US2415932A (en) Antenna system
US2625654A (en) Slotted cylindrical antenna