US3740751A - Wideband dual-slot waveguide array - Google Patents

Wideband dual-slot waveguide array Download PDF

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Publication number
US3740751A
US3740751A US00264033A US3740751DA US3740751A US 3740751 A US3740751 A US 3740751A US 00264033 A US00264033 A US 00264033A US 3740751D A US3740751D A US 3740751DA US 3740751 A US3740751 A US 3740751A
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United States
Prior art keywords
subgroups
radiating elements
distance
slot
transmission line
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Expired - Lifetime
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US00264033A
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English (en)
Inventor
J Nemit
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.)
TDK Micronas GmbH
ITT Inc
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Deutsche ITT Industries GmbH
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Assigned to ITT CORPORATION reassignment ITT CORPORATION CHANGE OF NAME (SEE DOCUMENT FOR DETAILS). Assignors: INTERNATIONAL TELEPHONE AND TELEGRAPH CORPORATION
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q21/00—Antenna arrays or systems
    • H01Q21/0006—Particular feeding systems
    • H01Q21/0037—Particular feeding systems linear waveguide fed arrays
    • H01Q21/0043—Slotted waveguides

Definitions

  • ABSTRACT A slottedwaveguide array having a unique dual-slot configuration which significantly increases the bandwidth and scanning angle capability of a linear waveguide slot array.
  • the pattern of the array sub-group has a null in the direction at which a grating lobe would normally occur. With the grating lobe suppressed in this manner, slot conductances are stable with frequency. The result is good pattern integrity and high antenna efficiency.
  • two system variables basically determine the slot array geomtry. These variable are beam position-and change of beam position asa function of frequency. These two parameter uniquely define the following two design parameter, namely, the feedline propagation constant (K which for a waveguide, is determined primarily by the waveguie a dimension; and secondly, the slot spacing (s) which is normally greater than one-half wavelength but less than one wavelength.
  • K the feedline propagation constant
  • s the slot spacing
  • the spacing s is determined by sytem parameters previously discussed, i.e., beam positioning considerations.
  • the spacing between elements in the subgroup is illustrated as s, and isselected so that the dual-slot element pattern will produce a null in the direction in which a grating lobe would normally occur for the single radiating element slot arrangement of FIG. 1, assuming all other characteristics of FIG. 1 and FIG. 2 were the same.
  • the element pattern of a subgroup with equal amplitude excitation is: p,,(u) cos [SI/2 (kg-k0 u)], where u sin0,
  • the strengths of themain beam and grating lobe are p (uo) cos [SI/2S2 1r] and p (ug) cos [551/252 1r]
  • S1 and S2 refer to the equivalent electrical length which may be slightly different from the physical dimensions.
  • width of the individual slots is a design consideration susceptible to selection in accordance with well known principles.
  • width and depth of the individual slot cuts the structure of the present invention follows known criteria.
  • a linear antenna array having a plurality of radiating elements fed from successive points along a transmission line, and comprising the combination of:
  • first spacing factor being. chosen in accordance with parameters including predetermined beam position and angular beam scan sensitivity as a function of frequency ⁇ and a second set of said radiating elements in which the individual elements thereof are spaced along said transmission line first spacing factor, said second set being offset along said transmission line by a second spacing factor with respect to said first set, said second spacing factor being such that the field at the antenna aperture resulting from both of said sets of radiating elements do not produce a grating lobe at a beam andle at which such a lobe would be generated as a result of radiation by said first set in the absence of said second set.
  • a linear antenna array for frequency or phase scanning comprising:
  • first means comprising a plurality of radiators fed from successive pointsv mutually spaced a first distance'along said transmission line for establishing a predetermined relationship of beam angle versus excitation frequency;
  • said second distance being such as to tend to produce a null at the angle at which a grating lobe would be produced by said first means in the absence of said second means.
  • any radiating element in one subgroup to the corresponding element in the adjacent groups is defined as being not less than one half wavelength and not more than one wavelength for any frequency of excitation within the band of utility of said array.

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  • Waveguide Aerials (AREA)
  • Variable-Direction Aerials And Aerial Arrays (AREA)
US00264033A 1972-06-19 1972-06-19 Wideband dual-slot waveguide array Expired - Lifetime US3740751A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US26403372A 1972-06-19 1972-06-19

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US3740751A true US3740751A (en) 1973-06-19

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US00264033A Expired - Lifetime US3740751A (en) 1972-06-19 1972-06-19 Wideband dual-slot waveguide array

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US (1) US3740751A (US06818201-20041116-C00086.png)
JP (1) JPS528217B2 (US06818201-20041116-C00086.png)
DE (1) DE2330654C3 (US06818201-20041116-C00086.png)
FR (1) FR2189891B1 (US06818201-20041116-C00086.png)
GB (1) GB1433022A (US06818201-20041116-C00086.png)
IT (1) IT989163B (US06818201-20041116-C00086.png)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2855280A1 (de) * 1977-12-29 1979-07-12 Int Standard Electric Corp Antennenzeile, insbesondere schlitzantennenzeile
US4243990A (en) * 1979-04-30 1981-01-06 International Telephone And Telegraph Corporation Integrated multiband array antenna
WO1987002192A1 (en) * 1985-10-03 1987-04-09 Allied Corporation Waveguide slot array antenna
US5311200A (en) * 1991-06-18 1994-05-10 Malibu Research Associates, Inc. Millimeter wave variable width waveguide scanner
US20070069966A1 (en) * 2005-09-27 2007-03-29 Elta Systems Ltd. Waveguide slot antenna and arrays formed thereof
US7830322B1 (en) 2007-09-24 2010-11-09 Impinj, Inc. RFID reader antenna assembly
CN107123854A (zh) * 2017-06-14 2017-09-01 复旦大学 基于单脊蛇形波导的频相混合电扫双缝阵列天线
US20240063555A1 (en) * 2022-07-20 2024-02-22 The United States Of America As Represented By The Secretary Of The Navy Grating Lobe Cancellation

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2906363A (en) * 1955-05-06 1959-09-29 Jersey Prod Res Co Multiple transducer array
US3100300A (en) * 1956-10-10 1963-08-06 Carlyle J Sletten Antenna array synthesis method

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3183511A (en) * 1963-03-28 1965-05-11 Hughes Aircraft Co Broadband waveguide slot radiator with mutually coupled slots of different perimeters and orientation

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2906363A (en) * 1955-05-06 1959-09-29 Jersey Prod Res Co Multiple transducer array
US3100300A (en) * 1956-10-10 1963-08-06 Carlyle J Sletten Antenna array synthesis method

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2855280A1 (de) * 1977-12-29 1979-07-12 Int Standard Electric Corp Antennenzeile, insbesondere schlitzantennenzeile
US4243990A (en) * 1979-04-30 1981-01-06 International Telephone And Telegraph Corporation Integrated multiband array antenna
WO1987002192A1 (en) * 1985-10-03 1987-04-09 Allied Corporation Waveguide slot array antenna
US5311200A (en) * 1991-06-18 1994-05-10 Malibu Research Associates, Inc. Millimeter wave variable width waveguide scanner
US20070069966A1 (en) * 2005-09-27 2007-03-29 Elta Systems Ltd. Waveguide slot antenna and arrays formed thereof
US7379029B2 (en) 2005-09-27 2008-05-27 Elta Systems Ltd Waveguide slot antenna and arrays formed thereof
US7830322B1 (en) 2007-09-24 2010-11-09 Impinj, Inc. RFID reader antenna assembly
CN107123854A (zh) * 2017-06-14 2017-09-01 复旦大学 基于单脊蛇形波导的频相混合电扫双缝阵列天线
CN107123854B (zh) * 2017-06-14 2023-09-29 复旦大学 基于单脊蛇形波导的频相混合电扫双缝阵列天线
US20240063555A1 (en) * 2022-07-20 2024-02-22 The United States Of America As Represented By The Secretary Of The Navy Grating Lobe Cancellation
US12119557B2 (en) * 2022-07-20 2024-10-15 Naval Information Warfare Center Pacific Grating lobe cancellation

Also Published As

Publication number Publication date
IT989163B (it) 1975-05-20
DE2330654A1 (de) 1974-01-17
JPS506257A (US06818201-20041116-C00086.png) 1975-01-22
DE2330654B2 (de) 1980-07-03
FR2189891A1 (US06818201-20041116-C00086.png) 1974-01-25
FR2189891B1 (US06818201-20041116-C00086.png) 1980-04-18
AU5696273A (en) 1974-12-19
GB1433022A (en) 1976-04-22
JPS528217B2 (US06818201-20041116-C00086.png) 1977-03-08
DE2330654C3 (de) 1981-04-09

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Free format text: CHANGE OF NAME;ASSIGNOR:INTERNATIONAL TELEPHONE AND TELEGRAPH CORPORATION;REEL/FRAME:004389/0606

Effective date: 19831122