US1874983A - Ultra short wave antenna system - Google Patents

Ultra short wave antenna system Download PDF

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Publication number
US1874983A
US1874983A US469415A US46941530A US1874983A US 1874983 A US1874983 A US 1874983A US 469415 A US469415 A US 469415A US 46941530 A US46941530 A US 46941530A US 1874983 A US1874983 A US 1874983A
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United States
Prior art keywords
reflector
conductor
antenna system
ultra short
short wave
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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
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US469415A
Inventor
Clarence W Hansell
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RCA Corp
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RCA Corp
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Publication date
Priority to BE381315D priority Critical patent/BE381315A/xx
Priority to DER82188D priority patent/DE551695C/en
Application filed by RCA Corp filed Critical RCA Corp
Priority to US469415A priority patent/US1874983A/en
Application granted granted Critical
Publication of US1874983A publication Critical patent/US1874983A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q19/00—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic
    • H01Q19/10—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces
    • H01Q19/12—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces wherein the surfaces are concave
    • H01Q19/17—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces wherein the surfaces are concave the primary radiating source comprising two or more radiating elements
    • H01Q19/175—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces wherein the surfaces are concave the primary radiating source comprising two or more radiating elements arrayed along the focal line of a cylindrical focusing surface

Definitions

  • This invention relates to antennae and especially towards the provision of an ultra short wave antennae utilizing the directive properties of a parabolic reflector.
  • parabolic reflectors have been used in combination with antennae, the combination is directive mainly in a plane perpendicular to the longitudinal axis of the reflector.
  • This I do by utilizing in combination with a reflector a linear conductor, radiant action along alternate half wave length portions of which is suppressed. In this manner, each of the working portions of the conductor, one-half wave length long carry currents of like phase, which tend to concentrate electromagnetic Wave action in a direction along the axis of the reflector.
  • Still a further object of my invention is to provide a simple support for the conductor within the reflector and this I do by supporting the conductor with insulators directly on the reflector.
  • I provide the combination of ametallic reflector 2 with a conductor 4 folded upon itself in U-shaped loops 6 at alternate half wave lengths.
  • the portions 8 of the conductor parallel to the longitudinal axis of the reflector 2 constitute the active portion of the conductor for electromagnetic wave transmission or reception.
  • the portions 8 will carry currents in phase, as they constitute alternate half wave lengths of the conductor 4, and will increase the directivity of the system along the longitudinal axis of the reflector 2.
  • the loops 6, being folded upon themselves will be substantially non-active with respect to electromagnetic waves. Coupling may be established to the conductor 4 through an in- 1930. Serial No. 469,415.
  • insulators 14 suitably mounted within the reflector are provided through which the loops 6 pass.
  • the active portions of the radiator 4 should be placed one-quarter wave parabolic reflector 2 for best theoretical action, in practice, the spacing is not critical. Consequently any variation therefrom such as may be caused by passing the half wave length loops 6 through the insulators 14, does not affect, too adversely the action of the ultra short wave antenna system described. It is only necessary that the radiators 8 be close to the focal point fleeting action.
  • a conductor In combination, a conductor, a plurality of wave lengths long having U-shaped loops one-half wave length long at wave lengths thereof, and a parabolic reflector, associated with and insulated from said conductor, for rendering electromagnetic action of the conductor substantially undirectional, said reflector being constructed at cer tain portions thereof to receive the U-shaped loops for supporting said conductor.
  • a linear conductor having U-shaped loops one-half wave length long at alternate half wave lengths along the axisof the conductor, and, a parabolic reflector associated therewith and constructed to hold the conductor in fixed relation with respect to said reflector, the loops of the conductor being arranged to support the conductor on the parabolic reflector.
  • a linear conductor having U-shaped loops one-half wave length long at alternate half wave lengths along the axis of the conductor, and, a parabolic reflector associated therewith and constructed to hold the conductor in fixed relation with respect to said reflector by means of insulators mounted in the reflector, the loops of said conlength from the alternate halfof the reflector for good re- M 77 a 4.
  • a linear antenna element 1 havlng non-rad1ating -portions at alternate V 5 half Wave lengths along its length, a parabolic ductor-being arranged to pass through said insulators,
  • said members being constructed tofirmly se- 7 cure said loops to said reflector.

Description

Aug. 30, 1932. c. w. HANSELL ULTRA SHORT WAVE ANTENNA SYSTEM Filed July 21. 1930 INVENTOR CLARENCE W. HANSELL BY 17%? ATTORNEY Patented Aug. 30, 1932 NITED STATE P'rsr Fries CLARENCE W. HAN SELL, OF PORT JEFFERSON, NEW YORK, ASSIGNOR T0 RADIO CORPO- RATION OF AMERICA, A CORPORATION OF DELAWARE ULTRA SHORT WAVE ANTENNA SYSTEM Application filed July 21,
This invention relates to antennae and especially towards the provision of an ultra short wave antennae utilizing the directive properties of a parabolic reflector.
Although parabolic reflectors have been used in combination with antennae, the combination is directive mainly in a plane perpendicular to the longitudinal axis of the reflector. To improve the directive characteristic of the system in a direction along the axis of the reflector, is one of the objects of my present invention and this I do by utilizing in combination with a reflector a linear conductor, radiant action along alternate half wave length portions of which is suppressed. In this manner, each of the working portions of the conductor, one-half wave length long carry currents of like phase, which tend to concentrate electromagnetic Wave action in a direction along the axis of the reflector.
Still a further object of my invention is to provide a simple support for the conductor within the reflector and this I do by supporting the conductor with insulators directly on the reflector.
Although I have defined my invention with particularity in the appended claims, the invention itself both as to its structural organization and mode of operation may best be understood by referring to the accompanying drawing which is given by way of illustration only of the features of my invention.
Turning to the drawing, I provide the combination of ametallic reflector 2 with a conductor 4 folded upon itself in U-shaped loops 6 at alternate half wave lengths. The portions 8 of the conductor parallel to the longitudinal axis of the reflector 2 constitute the active portion of the conductor for electromagnetic wave transmission or reception. The portions 8 will carry currents in phase, as they constitute alternate half wave lengths of the conductor 4, and will increase the directivity of the system along the longitudinal axis of the reflector 2.
The loops 6, being folded upon themselves will be substantially non-active with respect to electromagnetic waves. Coupling may be established to the conductor 4 through an in- 1930. Serial No. 469,415.
termediate loop by means of suitable leads 10 leading to radio apparatus 12 either transmitting or receiving.
In order to provide for the simple support of the radiating element or conductor 4' within the reflector 2, insulators 14 suitably mounted within the reflector are provided through which the loops 6 pass. Although the active portions of the radiator 4 should be placed one-quarter wave parabolic reflector 2 for best theoretical action, in practice, the spacing is not critical. Consequently any variation therefrom such as may be caused by passing the half wave length loops 6 through the insulators 14, does not affect, too adversely the action of the ultra short wave antenna system described. It is only necessary that the radiators 8 be close to the focal point fleeting action.
Having thus described my invention, what I claim is 1. In combination, a conductor, a plurality of wave lengths long having U-shaped loops one-half wave length long at wave lengths thereof, and a parabolic reflector, associated with and insulated from said conductor, for rendering electromagnetic action of the conductor substantially undirectional, said reflector being constructed at cer tain portions thereof to receive the U-shaped loops for supporting said conductor.
2. In combination, a linear conductor, having U-shaped loops one-half wave length long at alternate half wave lengths along the axisof the conductor, and, a parabolic reflector associated therewith and constructed to hold the conductor in fixed relation with respect to said reflector, the loops of the conductor being arranged to support the conductor on the parabolic reflector.
3. In combination, a linear conductor having U-shaped loops one-half wave length long at alternate half wave lengths along the axis of the conductor, and, a parabolic reflector associated therewith and constructed to hold the conductor in fixed relation with respect to said reflector by means of insulators mounted in the reflector, the loops of said conlength from the alternate halfof the reflector for good re- M 77 a 4. In combination, a linear antenna element 1 havlng non-rad1ating -portions at alternate V 5 half Wave lengths along its length, a parabolic ductor-being arranged to pass through said insulators,
" .reflector therefor, and means for supporting i ing non-radiating I the elementupon the reflector at the non-ray diating portions in such non-radiating portions extend through id refle tor; 5. In comblnatlon, a linear conductor havductor, a parabolic refiectorassoeiated therewith and having insulating members mounted in the reflector and spaced predetermined dis- 'tances apart, said U-shaped loops: being. ar-
ranged to pass through said insulating IneInhers and to extend through said reflector; and
'I said members being constructed tofirmly se- 7 cure said loops to said reflector.
c, CLARENCE W; HANSELL.
manner that said 7 U-shaped loops at alternate half Wave lengths along th axi o the M or
US469415A 1930-07-21 1930-07-21 Ultra short wave antenna system Expired - Lifetime US1874983A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
BE381315D BE381315A (en) 1930-07-21
DER82188D DE551695C (en) 1930-07-21 Shortwave radiators
US469415A US1874983A (en) 1930-07-21 1930-07-21 Ultra short wave antenna system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US469415A US1874983A (en) 1930-07-21 1930-07-21 Ultra short wave antenna system

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US1874983A true US1874983A (en) 1932-08-30

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BE (1) BE381315A (en)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2460286A (en) * 1938-01-17 1949-02-01 Univ Leland Stanford Junior Radiating electromagnetic resonator
US2570599A (en) * 1946-03-19 1951-10-09 Rca Corp Aerial array and feeder arrangement for use therewith
US2622198A (en) * 1950-08-23 1952-12-16 Philco Corp Phased antenna array
DE754559C (en) * 1934-04-14 1953-08-31 Julius Pintsch K G Arrangement for directional transmission or reception of ultra-high frequency electromagnetic oscillations
US2705754A (en) * 1945-01-24 1955-04-05 Bell Telephone Labor Inc Directive antenna systems
US2750589A (en) * 1952-09-20 1956-06-12 Edward F Harris Vertically polarized high frequency antenna array
US3680147A (en) * 1970-08-30 1972-07-25 Robert W Redlich Colinear antenna apparatus
US3757343A (en) * 1970-10-12 1973-09-04 Ampex Slot antenna array
US3879719A (en) * 1973-05-21 1975-04-22 Shorrock Developments Limited Flat beam intruder detection device
US4031537A (en) * 1974-10-23 1977-06-21 Andrew Alford Collinear dipole array with reflector
US4872021A (en) * 1987-03-12 1989-10-03 "Mirta" Collinear dipole array with inductive and capacitive phasing

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE754559C (en) * 1934-04-14 1953-08-31 Julius Pintsch K G Arrangement for directional transmission or reception of ultra-high frequency electromagnetic oscillations
US2460286A (en) * 1938-01-17 1949-02-01 Univ Leland Stanford Junior Radiating electromagnetic resonator
US2705754A (en) * 1945-01-24 1955-04-05 Bell Telephone Labor Inc Directive antenna systems
US2570599A (en) * 1946-03-19 1951-10-09 Rca Corp Aerial array and feeder arrangement for use therewith
US2622198A (en) * 1950-08-23 1952-12-16 Philco Corp Phased antenna array
US2750589A (en) * 1952-09-20 1956-06-12 Edward F Harris Vertically polarized high frequency antenna array
US3680147A (en) * 1970-08-30 1972-07-25 Robert W Redlich Colinear antenna apparatus
US3757343A (en) * 1970-10-12 1973-09-04 Ampex Slot antenna array
US3879719A (en) * 1973-05-21 1975-04-22 Shorrock Developments Limited Flat beam intruder detection device
US4031537A (en) * 1974-10-23 1977-06-21 Andrew Alford Collinear dipole array with reflector
US4872021A (en) * 1987-03-12 1989-10-03 "Mirta" Collinear dipole array with inductive and capacitive phasing

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Publication number Publication date
BE381315A (en)

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