• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    An array antenna for radiating wave energy signals into a selected region of space and suppressing radiation in other regions of space is formed with an aperture which is an array of N antenna element modules, each comprising two or more antenna element groups, and each group comprising one or more antenna elements. A plurality of 2N first transmission lines is provided, each for supplying wave energy signals to one of the element groups. The antenna also includes N second transmission lines. Each of the second transmission lines has an input terminal, intersects a selected number of first transmission lines, and is terminated at its other end. Directional couplers are provided for coupling the second transmission lines to the intersected first transmission lines. The directional couplers have selected coupling amplitudes and coupling phases to cause signals supplied to any of the input terminals to be coupled primarily to the elements of the element module corresponding to the input terminal, and to be coupled with selected relative amplitudes and phases to selected elements in other element modules of the array.
    公开号:SU1077586A3
    申请号:SU813237206
    申请日:1981-01-28
    公开日:1984-02-29
    发明作者:Р.Лопез Альфред
    申请人:Хэзелтайн Корпорейшн (Фирма)；
    IPC主号:
    专利说明:

      ate
    00
    yes The invention relates to antenna technology, namely, antenna arrays with a limited scanning sector. Antenna arrays are known that contain antenna modules of antenna elements, at least one of which can be active, and a transmission line connecting the antenna array inputs with the corresponding antenna elements so that the distribution of the field in the aperture of the antenna array is described by the function sin х / х l The disadvantage of this array antenna is the limited range of operating frequencies. Closest to the present invention is an antenna array containing N antenna modules, each antenna module containing A groups of antenna elements, each of which has one or more antenna elements, each antenna module and groups of antenna elements being placed on a spatial contour. 2 The disadvantages of the known antenna array include the limited operating frequency range and the complexity of the antenna array excitation scheme, which results in its lack of reliability. The purpose of the invention is to expand the frequency range while increasing the antenna array performance. To achieve this goal in an antenna array containing N antenna modules, each antenna module contains And antenna groups of elements, each of which has one or more antenna elements, each antenna module and antenna element groups located on the spatial circuit, antenna the modules are connected to the AN by the first transmission lines, the opposite ends of which are loaded for matched loads, the first transmission lines at equal intervals are electrically connected through directional couplers with N second l Transmission sources, one ends of which are loaded on matched loads, while others are antenna array entrances, with the intervals between adjacent antenna modules being equal to the interval at which the zeros of the antenna modules coincide with the highest diffraction maxima of the antenna array. In addition, the first and second transmission lines are made in the form of asymmetrical strip lines. FIG. 1 shows the structural scheme of the proposed antenna array; FIG. 2 shows an embodiment of an antenna array on an asymmetrical strip line. The antenna array contains N (in Fig. 1, three modules) of antenna modules 1. Each antenna module 1 contains A (in Fig. 1 two groups) groups 2 of antenna elements 3 (in Fig. 1 each group 2 contains antenna element 3), Each antenna module 1 and groups 2 of antenna elements 3 are located on a spatial contour, for example, on a straight line. Antenna modules 1 are connected to the AN by the first 4 transmission lines, the opposite ends of which are loaded on matched loads 5. The first transmission lines 4 at equal intervals are electrically connected through directional couplers 6 to H with the second transmission lines 7, one ends of which are loaded on matched loads 5, and the others are inputs 8 of the antenna array. The antenna array operates as follows. The control signals supplied to the antenna array inputs 8 pass through the second transmission lines 7 and are transmitted through the directional couplers b to the first transmission lines 4, and then to the antenna elements 3 to the antenna modules 1. The transient attenuation of the directional switches 6 is chosen so that the amplitude-phase distribution of the excitation currents in the antenna elements 3 creates a field distribution in the aperture of the antenna array, described by the sin x / x function. The lengths of the segments of the first 4 and second 7 transmission lines, as well as the coupling coefficients of the directional couplers b, are chosen so that the total electrical lengths of the transmission lines between each of the inputs 8 and the corresponding antenna elements 3 are equal, which ensures a minimum phase change when the operating frequency changes those. allows you to maintain the desired performance of the antenna array in a wide frequency range. The intervals between adjacent antenna modules 1 are chosen to be equal to the interval at which the zeros of the radiation pattern of the antenna modules 1 coincide with the higher diffraction maxima of the antenna array. With the use of asymmetric stripline technology, the entire antenna array drive circuit can be performed on a single printed circuit board.
    Thus, the proposed lattice antenna has a relatively simple, inexpensive and reliable power scheme and can operate in a relatively wide range of operating frequencies with effective suppression of the main lobes of the higher frequencies.
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    权利要求:
    Claims (2)
    [1]
    1. ANTENNA ARRAY containing N antenna modules, each antenna module containing A groups of antenna elements, each of which has one or more antenna elements, each antenna module and groups of antenna elements are placed on a spatial circuit, characterized in that, in order to expand the frequency range while improving reliability, the antenna modules are connected to the A-N first transmission lines, the opposite ends of which are loaded on matched loads, the first transmission lines at regular intervals are electrically connected through directional couplers with N second transmission lines, some ends of which are loaded on matched loads, and the other are inputs of the antenna array, while the intervals between adjacent antenna modules are chosen equal to the interval at which the zeros of the radiation pattern of the antenna modules coincide with the highest diffraction maxima of the antenna lattice.
    [2]
    2. The lattice according to claim 1, characterized in that the first and second transmission lines are made in the form of asymmetric strip lines.
    SU ™ 1077586
    1077536
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    引用文献:
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    US3056961A|1957-08-15|1962-10-02|Post Office|Steerable directional random antenna array|
    US3293648A|1961-10-27|1966-12-20|Gen Electric|Monopulse radar beam antenna array with network of adjustable directional couplers|
    US3295134A|1965-11-12|1966-12-27|Sanders Associates Inc|Antenna system for radiating directional patterns|
    US3824500A|1973-04-19|1974-07-16|Sperry Rand Corp|Transmission line coupling and combining network for high frequency antenna array|
    US4041501A|1975-07-10|1977-08-09|Hazeltine Corporation|Limited scan array antenna systems with sharp cutoff of element pattern|
    DE2625062C3|1976-06-03|1982-03-11|Siemens AG, 1000 Berlin und 8000 München|Phased antenna arrangement|
    US4117494A|1977-03-31|1978-09-26|Hazeltine Corporation|Antenna coupling network with element pattern shift|
    GB2023940B|1978-06-15|1983-02-02|Plessey Co Ltd|Directional arrays|
    US4168503A|1977-06-17|1979-09-18|Motorola, Inc.|Antenna array with printed circuit lens in coupling network|
    US4143379A|1977-07-14|1979-03-06|Hazeltine Corporation|Antenna system having modular coupling network|
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    EP0113985A3|1982-12-16|1986-04-23|The Marconi Company Limited|Receiving or transmitting multiple beam array|
    JPS6024472A|1983-07-21|1985-02-07|Nec Corp|Radar equipment|
    JPH0534841B2|1983-11-09|1993-05-25|Nippon Electric Co|
    CA1238713A|1984-06-04|1988-06-28|Alliedsignal Inc.|Antenna feed network|
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    法律状态:
    优先权:
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    US06/116,735|US4321605A|1980-01-29|1980-01-29|Array antenna system|
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