FR57513E - Improvements to sets of directional antennas - Google Patents

Improvements to sets of directional antennas

Info

Publication number
FR57513E
FR57513E FR57513DA FR57513E FR 57513 E FR57513 E FR 57513E FR 57513D A FR57513D A FR 57513DA FR 57513 E FR57513 E FR 57513E
Authority
FR
France
Prior art keywords
sets
directional antennas
antennas
directional
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
Other languages
French (fr)
Inventor
Chester Watts
Leon Himmel
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.)
International Standard Electric Corp
Original Assignee
International Standard Electric Corp
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 International Standard Electric Corp filed Critical International Standard Electric Corp
Application granted granted Critical
Publication of FR57513E publication Critical patent/FR57513E/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
    • H01Q9/04—Resonant antennas
    • H01Q9/16—Resonant antennas with feed intermediate between the extremities of the antenna, e.g. centre-fed dipole
    • H01Q9/26—Resonant antennas with feed intermediate between the extremities of the antenna, e.g. centre-fed dipole with folded element or elements, the folded parts being spaced apart a small fraction of operating wavelength
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Aerials With Secondary Devices (AREA)
  • Variable-Direction Aerials And Aerial Arrays (AREA)
FR57513D 1943-07-09 1947-08-07 Improvements to sets of directional antennas Expired FR57513E (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US494040A US2436843A (en) 1943-07-09 1943-07-09 Radio antenna

Publications (1)

Publication Number Publication Date
FR57513E true FR57513E (en) 1953-01-29

Family

ID=23962773

Family Applications (1)

Application Number Title Priority Date Filing Date
FR57513D Expired FR57513E (en) 1943-07-09 1947-08-07 Improvements to sets of directional antennas

Country Status (4)

Country Link
US (1) US2436843A (en)
ES (1) ES182213A1 (en)
FR (1) FR57513E (en)
GB (1) GB586035A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2557941A (en) * 1945-07-07 1951-06-26 Standard Telephones Cables Ltd Directive antenna
US5291211A (en) * 1992-11-20 1994-03-01 Tropper Matthew B A radar antenna system with variable vertical mounting diameter

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR833253A (en) * 1937-06-11 1938-10-18 Materiel Telephonique Guidance systems using radio waves, in particular for the altitude guidance of aircraft
US2199050A (en) * 1937-06-14 1940-04-30 Howard L Jenkins Antenna support
US2281429A (en) * 1938-11-26 1942-04-28 Rca Corp Antenna
US2292791A (en) * 1940-08-03 1942-08-11 Morrill P Mims Directional antenna system
US2290800A (en) * 1940-09-30 1942-07-21 Rca Corp Antenna

Also Published As

Publication number Publication date
US2436843A (en) 1948-03-02
ES182213A1 (en) 1948-04-01
GB586035A (en) 1947-03-05

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