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Left-right hand circular polarization reconstructible micro-strip travelling wave antenna array

A technology of traveling wave antenna and circular polarization, which is applied in the field of microstrip traveling wave antenna array, can solve the problems of low gain, difficulty in forming an array, and difficult implementation, and achieve the effect of improving antenna performance, compact structure, and high reliability

Inactive Publication Date: 2015-08-26
UNIV OF ELECTRONIC SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] The earliest reconfigurable circularly polarized microstrip antenna adopts the orthogonal feeding method, but when this antenna forms an antenna array element, a complex feeding network is required to form circularly polarized feeding, which is not easy to realize and difficult to form an array
In order to solve the problems of complex feeding network, low gain, narrow bandwidth, low efficiency, and difficult formation of reconfigurable circularly polarized microstrip antenna arrays, the purpose of the present invention is to provide a reconfigurable circularly polarized Microstrip traveling wave antenna array, which has the characteristics of simple feed network, broadband, low cross polarization, compact structure, and easy implementation

Method used

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  • Left-right hand circular polarization reconstructible micro-strip travelling wave antenna array
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  • Left-right hand circular polarization reconstructible micro-strip travelling wave antenna array

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Embodiment 1

[0042] see Figure 2 to Figure 7 , a basic 2×4 antenna array, the patch spacing is determined by the design method of conventional array antennas: horizontal direction, array element spacing 0.52λ 0 , use the transmission line 9 to cascade the patch array elements; in the vertical direction, the array element spacing is 0.47λ 0 , where λ 0 is the free-space wavelength corresponding to the center frequency of 5.6 GHz.

[0043] figure 2 In order to realize the 2×4 element reconfigurable microstrip traveling wave antenna array structure with left and right circular polarization, the order from top to bottom is the microstrip traveling wave antenna array, the upper dielectric substrate 1, the metal ground plate 3, the lower dielectric Substrate 4 and Wilkinson power division and feeding network; metal column 2 penetrates through two layers of dielectric substrates; through holes 6 are respectively provided at the positions corresponding to the metal columns on the metal ground...

Embodiment 2

[0050] see figure 1 , Figure 5 to Figure 11 , a 4×4 element reconfigurable microstrip traveling wave antenna array that can realize left and right circular polarization, and the array element spacing is the same as that of the antenna array element shown in Example 1.

[0051] Figure 8 Schematic diagram of a 4×4 element reconfigurable microstrip traveling wave antenna array that can realize left and right circular polarization. Its structure consists of two identical (such as figure 2 shown) 2 × 4 microstrip traveling wave antenna arrays are arranged up and down, and the spacing of each element in the vertical direction is 0.47λ 0 , and the rest of the antenna structures are the same as figure 2 The antenna structures shown are the same.

[0052] Figure 9 It is a schematic diagram of the array structure of the specific implementation of the 4×4 element reconfigurable microstrip traveling wave antenna array that can realize the left and right circular polarization. ...

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Abstract

The invention discloses a left-right hand circular polarization reconstructible micro-strip travelling wave antenna array, and belongs to the antenna technical field; the left-right hand circular polarization reconstructible micro-strip travelling wave antenna array uses a conventional square corner cut circular polarization micro-strip antenna structure as a base, considers impedance match characteristics between array elements, employs a cascade mode to connected the sub-array elements, thus forming the micro-strip travelling wave antenna array, and further using a switch control feed network feed mode to reach a left-right hand circular polarization reconstructible purpose. The micro-strip travelling wave antenna array, a Wilkinson power divider and the circular polarization technology are combined, so low profile, low cost and low cross polarization characteristics of a tradition circular polarization micro-strip paster antenna can be inherited, and broadband and high gain advantages can be added; the left-right hand circular polarization reconstructible micro-strip travelling wave antenna array is applied to the radar and communication systems like an aircraft, a ship, and a vehicle device.

Description

technical field [0001] The invention belongs to the technical field of antennas, and relates to a reconfigurable microstrip traveling wave antenna array with left-right circular polarization, which realizes the requirement of switching between left-right circular polarizations as required. Background technique [0002] For satellite communication and remote sensing systems, in order to effectively transmit information and overcome the polarization distortion caused by the ionospheric Faraday rotation effect, the antenna is required to have circular polarization performance, and the same antenna front works simultaneously in the receive and transmit modes. The antenna is required to have the working capability of left-hand circular polarization and right-hand circular polarization. In terms of military use, in the field of early warning of space targets, countries also generally use circularly polarized antennas as basic radiation units. Therefore, circular polarization tech...

Claims

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Application Information

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IPC IPC(8): H01Q1/36H01Q1/50H01Q15/24H01Q21/08
Inventor 李家林邱日成王秉中
Owner UNIV OF ELECTRONIC SCI & TECH OF CHINA
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