[go: up one dir, main page]
More Web Proxy on the site http://driver.im/

US3377596A - Slot antenna with programmed radiation pattern - Google Patents

Slot antenna with programmed radiation pattern Download PDF

Info

Publication number
US3377596A
US3377596A US254655A US25465563A US3377596A US 3377596 A US3377596 A US 3377596A US 254655 A US254655 A US 254655A US 25465563 A US25465563 A US 25465563A US 3377596 A US3377596 A US 3377596A
Authority
US
United States
Prior art keywords
cylinder
generatrices
slots
slot
radiation pattern
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
US254655A
Inventor
Spitz Erich
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.)
Thales SA
Original Assignee
CSF Compagnie Generale de Telegraphie sans Fil SA
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 CSF Compagnie Generale de Telegraphie sans Fil SA filed Critical CSF Compagnie Generale de Telegraphie sans Fil SA
Application granted granted Critical
Publication of US3377596A publication Critical patent/US3377596A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q3/00—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system
    • H01Q3/12—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system using mechanical relative movement between primary active elements and secondary devices of antennas or antenna systems
    • H01Q3/14—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system using mechanical relative movement between primary active elements and secondary devices of antennas or antenna systems for varying the relative position of primary active element and a refracting or diffracting device
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q3/00—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system
    • H01Q3/12—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system using mechanical relative movement between primary active elements and secondary devices of antennas or antenna systems
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q3/00—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system
    • H01Q3/26—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture
    • H01Q3/30—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture varying the relative phase between the radiating elements of an array
    • H01Q3/32—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture varying the relative phase between the radiating elements of an array by mechanical means

Definitions

  • An antenna according to the invention comprises a stationary elongated energy guiding system having at least one aperture and mechanical means for masking said aperture according to a predetermined pattern.
  • the stationary system is built up by a waveguide section having a lengthwise slot, the length of said slot being of the order of the wavelength of the radiated energy.
  • the masking system is built up by a ruled surface and is caused to move in such a way that one of the generatrices is always applied to said slot. It is provided with slots and the registering of the stationary and the moving systems determines the radiation pattern of the energy fed to the stationary system.
  • FIG. 1 is a perspective view of an antenna according to the invention
  • FIG. 2 is an end view of the antenna illustrated of FIG. 1;
  • FIG. 3 is a plane view of the system of FIG. 2;
  • FIG. 4 shows an example of the programming cylinder in a developed state
  • FIG. 5 shows the scanning pattern obtained by means of the systems of FIGS. 1 to 4;
  • FIGS. 6 and 7 show developments of different programming cylinders
  • FIG. 8 shows the scanning pattern of the cylinder of FIG. 7
  • FIG. 9 shows another developed programming cylinder
  • FIG. 10 shows the scanning pattern corresponding to the cylinder of FIG. 9
  • FIG. 11 shows a further form of the programming cylinder
  • FIG. 12 shows a modification
  • the antenna illustrated in FIG. 1 comprises a reflector 1 having the shape of a parabolic cylinder and made of a conductive material. Along the focal line of reflector 1, there is mounted a circular waveguide 2. A slot 3 is formed along a generatrix of guide 2.
  • a cylinder 4 whose axis is parallel to that of cylinder 2, surrounds the latter and is tangent thereto along slot 3. Cylinder 4 can be rotated about its axis by any suitable known means.
  • FIG. 2 shows an end-view of the system of FIG. 1, the arrow symbolically indicating the rotating motor and the direction of rotation.
  • FIG. 3 there are shown the two cylinders 2 and 4. Cylinder 4 is provided with slots 5 which are equally spaced along a generatrix of the cylinder. During the rotation of the latter, they move past the slot 3 of guide 2. Thus, cylinder 4 will mask portions of slot 3, while leaving the remaining portions 6 thereof free to radiate energy. Those portions are shown hatched in FIG. 3. The width and shape of slot portions 6 depend on those of slots 3 and slots 5.
  • Cylinder 2 will be referred to hereinafter as the radiating cylinder and cylinder 4 as the programming cylinder.
  • cylinder 2 has a circular cross section and ultra-high frequency energy is propagated therein according to any suitable mode, for example the H mode.
  • FIG. 4 the cylinder 4 is shown developed. Slots 5 are formed along a number of generatrices, for example seven, i.e. generatrices G G G G G G and G but their spacing varies from one generatrix to another.
  • the spacing along generatrix G is M, k being the wavelength in guide 2 of the energy propagating therein.
  • the spacing along G is k -t-a.
  • the spacing along G is A +2a.
  • the spacing along G is A t-3a.
  • the spacing along G is A a.
  • the spacing along G is )t -2a.
  • the spacing along G is A 3a. a being a given length.
  • FIG. 5 shows the variations of angle a between the perpendicular to slot 3 and the radiation direction corresponding to various generatrices, assuming that cylinder 4. is rotating with uniform speed.
  • the angle defining the maximum radiation direction varies by steps, while remaining constant as long as a slot 5 is moving past slot 3.
  • N is the number of rotations per minute and n the number of rows of slots, i.e. seven in the case of FIG. 4.
  • the spacing between the adjacent rows of slots is disregarded.
  • the slOtS corresponding to one program or set of programs are to cover the whole of the circumference of the cylinder. In this case, the transmission will take place according to a sawtooth pattern, as shown in FIG. 5.
  • the invention provides several embodiments of the programming cylinder.
  • FIG. 7 shows a developed programming cylinder. Slotshave their edges parallel to the straight line connecting the centers of the slots occupying the same position in each row. The resulting scanning is then effected as shown in FIG. 8.
  • the generatrix G, moving past the slot corresponds to an angle a which varies in the range rx and +a
  • the maximum distance between two consecutive strips is A +a the minimum distance being h a
  • the scanning pattern was of the saw-tooth type.
  • FIG. 11 illustrates the development of a programming cylinder, when it is desired to obtain a continuous program at a slower scanning speed in a predetermined region of the space, say in the vicinity of 11:0.
  • FIG. 12 shows in cross section an arrangment where cylinder 2 is a rectangular waveguide.
  • the rotary motion may have a constant speed, whatever the scanning program.
  • the scanning rate may be very high. Taking, by way of example, an angular speed of 6000 r.p.m. and about ten programs on the programming cylinder, the scanning rate is of one kc./s.
  • Antenna for radiating ultra-high frequency energy comprising: a wave guide extending in a predetermined propagation direction, having an elongated aperture extending in said direction; masking means including a wall having a ruled surface having generatrices; means for moving said means, in such a way that one of said generatrices is always applied to said aperture, said wall having a plurality of rows of slots, extending along spaced generatrices thereof, thus unma-sking spaced radiating slots in said guide.
  • Antenna for radiating ultra-high frequency energy comprising:
  • a wave guide having a wall, said wall having an elongated aperture; a masking cylinder having generatrices; means for rotating said cylinder, in such a way that one of said generatrices is always applied to said aperture; said masking cylinder having a plurality of rows of spaced slots respectively extending along a plurality of said generatrices, thus unmasking portions of said aperture for radiating energy.
  • Antenna for radiating ultra-high frequency energy comprising: a wave guide having a wall, said wall having an elongated aperture; a masking cylinder having generatrices; means for rotating said cylinder, in such a way that one of said generatrices is always applied to said aperture; said masking cylinder having a plurality of rows of spaced slots respectively extending along a plurality of said generatrices, the distance between said slots not being the same in all of said rows, thus unmasking portions of said aperture.
  • Antenna for radiating ultra-high frequency energy comprising: a wave guide having a wall, said wall having an elongated aperture; a masking cylinder having generatrices; means for rotating said cylinder, insuch a way that one of said generatrices is always applied to said apertureysaid masking cylinder having a plurality of rows of spaced slots respectively extending along a plurality of said generatrices, the distance between said slots not being the same in all of said rows, said slots also forming second rows intersecting said generatrices, the slotsof each one of said rows having opposite edges extending along the same straight lines.
  • Antenna for radiating ultra-high frequency energy comprising: a wave guide having a wall, said wall having an elongated aperture; a masking cylinder having generatrices; means for rotating said cylinder, in such a way that one of said generatrices is always applied to said aperture; said mask ing cylinder having a plurality of slots intersecting said generatrices, thus unmasking portions of said aperture for radiating energy.

Landscapes

  • Variable-Direction Aerials And Aerial Arrays (AREA)

Description

E. SPITZ April 9, 1968 SLOT ANTENNA WITH PROGRAMMED RADIATION PATTERN 6 Sheets-Sheet 1 Filed Jan. 29, 1963 April 9, 1968 E. SPITZ 3,377,596
SLOT ANTENNA WITH PROGRAMME!) RADIATION PATTERN Filed Jan. 29, 1963 6 Sheets-Sheet 2 April 9, 1968 E. SPITZ 3,377,596
SLOT ANTENNA WITH PROGRAMMED RADIATION PATTERN Filed Jan. 29.. 1963 6 Sheets-Sheet 5 nu l l l [a I l l l l n l -;i vv2 r I l I I -[o-( I L -no( L.-
FIG.5
E. SPITZ April 9, 1968 SLOT ANTENNA WITH PROGRAMMED RADIATION PATTERN 6 Sheets-Sheet 4.
Filed Jan. 29, 1963 EZZZZZ April 9, 1968 E. SPITZ 3,377,596
SLOT ANTENNA WITH PROGRAMMED RADIATION PATTERN Filed Jan. 29, 1963 6 Sheets-Sheet 5 a I i o 0 g I 0 4 l 2' I I & 0 l l i i Q v H FI'GJO E. SPITZ A ril 9, 1968 SLOT ANTENNA WITH PROGRAMMED RADIATION PATTERN Filed Jan. 29, 1963 6 Sheets-Sheet 6 FIG. f1
3,377,596 SLOT ANTENNA WITH PROGRAMMED RADIATION PATTERN Erich Spitz, Paris, France, assignor to CSF-Compagnie Generale de Telegraphic Sans Fl], a corporation of France Filed Jan. 2?, 1963, Ser. No. 254,655 Claims priority, application France, Jan. 31, 1962, 886,464, Patent 1,320,855 Claims. (Cl. 343-768) The present invention relates to microwave antennas.
The problem often arises in microwave technique to provide antennas adapted to scan predetermined space portions with the maximum radiation direction varying in time according to a predetermined program.
Electrical or electronic systems have been devised to this effect which require no moving mechanical components. While such systems generally have the advantage of making high scanning velocities possible, they are, in particular those comprising ferrite switches, ill suited for very short waves, for example millimetric waves.
It is an object of the invention to provide an antenna with a programmed radiation pattern which is particularly suitable for millimeter waves.
An antenna according to the invention comprises a stationary elongated energy guiding system having at least one aperture and mechanical means for masking said aperture according to a predetermined pattern.
According to a preferred embodiment of the invention, the stationary system is built up by a waveguide section having a lengthwise slot, the length of said slot being of the order of the wavelength of the radiated energy. The masking system is built up by a ruled surface and is caused to move in such a way that one of the generatrices is always applied to said slot. It is provided with slots and the registering of the stationary and the moving systems determines the radiation pattern of the energy fed to the stationary system.
The invention will be best understood from the following description and appended drawing, wherein:
FIG. 1 is a perspective view of an antenna according to the invention;
FIG. 2 is an end view of the antenna illustrated of FIG. 1;
FIG. 3 is a plane view of the system of FIG. 2;
FIG. 4 shows an example of the programming cylinder in a developed state;
FIG. 5 shows the scanning pattern obtained by means of the systems of FIGS. 1 to 4;
FIGS. 6 and 7 show developments of different programming cylinders;
FIG. 8 shows the scanning pattern of the cylinder of FIG. 7;
FIG. 9 shows another developed programming cylinder;
FIG. 10 shows the scanning pattern corresponding to the cylinder of FIG. 9;
FIG. 11 shows a further form of the programming cylinder; and
FIG. 12 shows a modification.
The antenna illustrated in FIG. 1 comprises a reflector 1 having the shape of a parabolic cylinder and made of a conductive material. Along the focal line of reflector 1, there is mounted a circular waveguide 2. A slot 3 is formed along a generatrix of guide 2.
A cylinder 4, whose axis is parallel to that of cylinder 2, surrounds the latter and is tangent thereto along slot 3. Cylinder 4 can be rotated about its axis by any suitable known means.
FIG. 2 shows an end-view of the system of FIG. 1, the arrow symbolically indicating the rotating motor and the direction of rotation.
States Patent 0 In FIG. 3, there are shown the two cylinders 2 and 4. Cylinder 4 is provided with slots 5 which are equally spaced along a generatrix of the cylinder. During the rotation of the latter, they move past the slot 3 of guide 2. Thus, cylinder 4 will mask portions of slot 3, while leaving the remaining portions 6 thereof free to radiate energy. Those portions are shown hatched in FIG. 3. The width and shape of slot portions 6 depend on those of slots 3 and slots 5.
Cylinder 2 will be referred to hereinafter as the radiating cylinder and cylinder 4 as the programming cylinder.
In the example illustrated, cylinder 2 has a circular cross section and ultra-high frequency energy is propagated therein according to any suitable mode, for example the H mode.
In FIG. 4, the cylinder 4 is shown developed. Slots 5 are formed along a number of generatrices, for example seven, i.e. generatrices G G G G G G and G but their spacing varies from one generatrix to another.
The spacing along generatrix G is M, k being the wavelength in guide 2 of the energy propagating therein.
The spacing along G is k -t-a. The spacing along G is A +2a. The spacing along G is A t-3a. The spacing along G is A a. The spacing along G is )t -2a. The spacing along G is A 3a. a being a given length.
, The system operates as follows:
When generatrix G is in register with slot 3, all the slot portions 6 are fed in phase. The radiation direction r from cylinder 2 in the plane containing slot 3 is perpendicular to this slot. While generatrix G moves past slot 3, the maximum radiation direction forms an angle on with the perpendicular to slot 3; and while generatrix Gj (j='3 0 +3) is moving past slot 3, this angle is equal to jet.
FIG. 5 shows the variations of angle a between the perpendicular to slot 3 and the radiation direction corresponding to various generatrices, assuming that cylinder 4. is rotating with uniform speed. The angle defining the maximum radiation direction varies by steps, while remaining constant as long as a slot 5 is moving past slot 3.
When a single program is provided, i.e. there is a single set of slots on cylinder 4, the time interval '7', during which the radiation is in a predetermined direction, 1s
where N is the number of rotations per minute and n the number of rows of slots, i.e. seven in the case of FIG. 4. The spacing between the adjacent rows of slots is disregarded.
Several programs P P P may also be provided as shown in FIG. 6. The time interval 1- is then 60/Nnp, p being the number of programs.
If it is desired that there should be no idle period between the programs or set of programs, which are continuously repeated, the slOtS corresponding to one program or set of programs are to cover the whole of the circumference of the cylinder. In this case, the transmission will take place according to a sawtooth pattern, as shown in FIG. 5.
In order to insure a continuous scanning, the invention provides several embodiments of the programming cylinder.
FIG. 7 shows a developed programming cylinder. Slotshave their edges parallel to the straight line connecting the centers of the slots occupying the same position in each row. The resulting scanning is then effected as shown in FIG. 8.
In FIG. 9, the slots having the same position in each row have been merged in one continuous cut-out portion 7. Several sets of such cut-outs, corresponding to several programs may be formed in the cylinder. The scanning angle oc=f(t) is illustrated in FIG. 10.
The generatrix G, moving past the slot corresponds to an angle a which varies in the range rx and +a The maximum distance between two consecutive strips is A +a the minimum distance being h a In the preceding figures, the scanning pattern was of the saw-tooth type.
FIG. 11 illustrates the development of a programming cylinder, when it is desired to obtain a continuous program at a slower scanning speed in a predetermined region of the space, say in the vicinity of 11:0.
The slots 7 are somewhat S-shaped, with a linear portion perpendicular to the generatrices; the distance between the linear portions of two consecutive slots is equal to A FIG. 12 shows in cross section an arrangment where cylinder 2 is a rectangular waveguide.
In this case, cylinders 2 and 4, which are arranged as shown, are no longer tangent to one another. Slot 3 is defined by means of traps 8, having a length equal to M4, for preventing any loss of energy between the two guides.
Among the many advantages of the system according to the invention the following may be set forth:
(1) Only the programming cylinder, which has a reduced weight, is rotated.
(2) The rotary motion may have a constant speed, whatever the scanning program.
(3) The scanning rate may be very high. Taking, by way of example, an angular speed of 6000 r.p.m. and about ten programs on the programming cylinder, the scanning rate is of one kc./s.
(4) By a simple modification of the program, which may be done by means of a foil spread on the programming cylinder, the diagram pattern and the scanning law may be readily modified.
Of course, the invention is not limited to the embodiments described which are given solely by way of example.
What is claimed is:
1. Antenna for radiating ultra-high frequency energy, according to a programmed radiation pattern, comprising: a wave guide extending in a predetermined propagation direction, having an elongated aperture extending in said direction; masking means including a wall having a ruled surface having generatrices; means for moving said means, in such a way that one of said generatrices is always applied to said aperture, said wall having a plurality of rows of slots, extending along spaced generatrices thereof, thus unma-sking spaced radiating slots in said guide.
2. Antenna for radiating ultra-high frequency energy, according to a programmed radiation pattern, comprising:
a wave guide having a wall, said wall having an elongated aperture; a masking cylinder having generatrices; means for rotating said cylinder, in such a way that one of said generatrices is always applied to said aperture; said masking cylinder having a plurality of rows of spaced slots respectively extending along a plurality of said generatrices, thus unmasking portions of said aperture for radiating energy.
3. Antenna for radiating ultra-high frequency energy, according to a programmed radiation pattern, comprising: a wave guide having a wall, said wall having an elongated aperture; a masking cylinder having generatrices; means for rotating said cylinder, in such a way that one of said generatrices is always applied to said aperture; said masking cylinder having a plurality of rows of spaced slots respectively extending along a plurality of said generatrices, the distance between said slots not being the same in all of said rows, thus unmasking portions of said aperture.
4. Antenna for radiating ultra-high frequency energy, according to a programmed radiation pattern, comprising: a wave guide having a wall, said wall having an elongated aperture; a masking cylinder having generatrices; means for rotating said cylinder, insuch a way that one of said generatrices is always applied to said apertureysaid masking cylinder having a plurality of rows of spaced slots respectively extending along a plurality of said generatrices, the distance between said slots not being the same in all of said rows, said slots also forming second rows intersecting said generatrices, the slotsof each one of said rows having opposite edges extending along the same straight lines.
5. Antenna for radiating ultra-high frequency energy, according to a programmed radiation pattern, comprising: a wave guide having a wall, said wall having an elongated aperture; a masking cylinder having generatrices; means for rotating said cylinder, in such a way that one of said generatrices is always applied to said aperture; said mask ing cylinder having a plurality of slots intersecting said generatrices, thus unmasking portions of said aperture for radiating energy.
References Cited UNITED STATES PATENTS 2,480,181 8/1949 Breen et al. 343-768 2,534,451 12/1950 Kahan et a1 343-771 X 2,648,003 8/1953 Chn 343768 2,670,436 2/1954 Dun-bar 343-468 X 2,711,440 6/1955 Rines 343771 XR 3,018,479 1/1962 Kelly 343-768 FOREIGN PATENTS 886,164 8/1953 Germany.
ELI LIEBERMAN, Primary Examiner.
HERMAN KARL SAALBACH, C. L. JUSTUS,
Examiners.
T. H. TUBBESING, Assistant Examiner.-

Claims (1)

1. ANTENNA FOR RADIATING ULTRA-HIGH FREQUENCY ENERGY, ACCORDING TO A PROGRAMMED RADIATION PATTERN, COMPRISING: A WAVE GUIDE EXTENDING IN A PREDETERMINED PROPAGATION DIRECTION, HAVING AN ELONGATED APERTURE EXTENDING IN SAID DIRECTION; MASKING MEANS INCLUDING A WALL HAVING A RULED SURFACE HAVING GENERATRICES; MEANS FOR MOVING SAID MEANS, IN SUCH A WAY THAT ONE OF SAID GENERATRICES IS ALWAYS APPLIED TO SAID APERTURE, SAID WALL HAVING A PLURALITY OF ROWS OF SLOTS, EXTENDING ALONG SPACED GENERATRICES THEREOF, THUS UNMASKING SPACED RADIATING SLOTS IN SAID GUIDE.
US254655A 1962-01-31 1963-01-29 Slot antenna with programmed radiation pattern Expired - Lifetime US3377596A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR886464A FR1320855A (en) 1962-01-31 1962-01-31 Radiation program antenna

Publications (1)

Publication Number Publication Date
US3377596A true US3377596A (en) 1968-04-09

Family

ID=8771611

Family Applications (1)

Application Number Title Priority Date Filing Date
US254655A Expired - Lifetime US3377596A (en) 1962-01-31 1963-01-29 Slot antenna with programmed radiation pattern

Country Status (3)

Country Link
US (1) US3377596A (en)
FR (1) FR1320855A (en)
GB (1) GB957702A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3501766A (en) * 1965-08-16 1970-03-17 Marconi Co Ltd Variable directivity aerial of the slotted waveguide type
US5546096A (en) * 1989-09-13 1996-08-13 Beam Company Limited Traveling-wave feeder type coaxial slot antenna
DE102011001569A1 (en) * 2011-03-25 2012-09-27 Technische Universität Carolo-Wilhelmina Zu Braunschweig Method and apparatus for modeling antenna radiation characteristics
GB2553634A (en) * 2016-06-24 2018-03-14 Ford Global Tech Llc A multiple orientation antenna for vehicle communication

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2897475B1 (en) * 2006-02-15 2008-04-18 Thales Sa MECHANICAL SCANNING ANTENNA SCANNING A WIDE SPATIAL DOMAIN WITH REDUCED DIMENSIONS
EP2587586B1 (en) * 2011-10-26 2017-01-04 Alcatel Lucent Distributed antenna system and method of manufacturing a distributed antenna system

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2480181A (en) * 1945-01-24 1949-08-30 Us Sec War Directive high-frequency antenna
US2534451A (en) * 1946-05-31 1950-12-19 Radio Industrie Sa Directional aerial
US2648003A (en) * 1946-01-07 1953-08-04 Us Navy Vernier scanner
DE886164C (en) * 1944-03-28 1953-08-13 Telefunken Gmbh Antenna system with swiveling directional characteristic
US2670436A (en) * 1950-05-03 1954-02-23 Allen S Dunbar Helical slot scanner
US2711440A (en) * 1944-10-09 1955-06-21 Rines Robert Harvey Microwave scanning system
US3018479A (en) * 1959-02-02 1962-01-23 Hughes Aircraft Co Scanning antenna

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE886164C (en) * 1944-03-28 1953-08-13 Telefunken Gmbh Antenna system with swiveling directional characteristic
US2711440A (en) * 1944-10-09 1955-06-21 Rines Robert Harvey Microwave scanning system
US2480181A (en) * 1945-01-24 1949-08-30 Us Sec War Directive high-frequency antenna
US2648003A (en) * 1946-01-07 1953-08-04 Us Navy Vernier scanner
US2534451A (en) * 1946-05-31 1950-12-19 Radio Industrie Sa Directional aerial
US2670436A (en) * 1950-05-03 1954-02-23 Allen S Dunbar Helical slot scanner
US3018479A (en) * 1959-02-02 1962-01-23 Hughes Aircraft Co Scanning antenna

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3501766A (en) * 1965-08-16 1970-03-17 Marconi Co Ltd Variable directivity aerial of the slotted waveguide type
US5546096A (en) * 1989-09-13 1996-08-13 Beam Company Limited Traveling-wave feeder type coaxial slot antenna
DE102011001569A1 (en) * 2011-03-25 2012-09-27 Technische Universität Carolo-Wilhelmina Zu Braunschweig Method and apparatus for modeling antenna radiation characteristics
GB2553634A (en) * 2016-06-24 2018-03-14 Ford Global Tech Llc A multiple orientation antenna for vehicle communication
US10439275B2 (en) 2016-06-24 2019-10-08 Ford Global Technologies, Llc Multiple orientation antenna for vehicle communication

Also Published As

Publication number Publication date
FR1320855A (en) 1963-03-15
GB957702A (en) 1964-05-13

Similar Documents

Publication Publication Date Title
US3500422A (en) Sub-array horn assembly for phased array application
US3448455A (en) Armoured structure antenna
US4129872A (en) Microwave radiating element and antenna array including linear phase shift progression angular tilt
US2840818A (en) Slotted antenna
US3039097A (en) Frequency-sensitive rapid-scanning antenna
US3377596A (en) Slot antenna with programmed radiation pattern
US2453414A (en) System for directing radio waves
US3881178A (en) Antenna system for radiating multiple planar beams
US3568208A (en) Varying propagation constant waveguide
US3864679A (en) Antenna system for radiating doppler coded pattern using multiple beam antenna
US3078463A (en) Parallel plate waveguide with slotted array and multiple feeds
US3775773A (en) Technique for generating planar beams from a linear doppler line source employing a circular parallel-plate waveguide
US2721263A (en) Curved throat scan horn for the transmission of electromagnetic energy
US2939142A (en) Bending microwaves by means of a magnetic or electric field
US3230535A (en) Microwave scanning apparatus employing feed horn coupled to spaced lens by coaxial transmission lines
US3109174A (en) Antenna array
US3029432A (en) Scanning antenna
US2894261A (en) Antenna array
US4468673A (en) Frequency scan antenna utilizing supported dielectric waveguide
US4516131A (en) Variable slot conductance dielectric antenna and method
US2478241A (en) Flat beam antenna
US2878471A (en) Conical scanning means for antenna beam
US3188642A (en) Polarization grating for scanning antennas
US3005985A (en) Pre-programmed scanning antenna
US2892191A (en) Antenna system having a directionally variable radiation pattern