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Broadband reconfigurable transmission array antenna based on polarization rotating surface

A technology of polarization rotation and transmission array, which is applied to antenna unit combinations, antennas, antenna arrays and other directions with different polarization directions. Avoid the effect of blocking electromagnetic wave transmission

Active Publication Date: 2020-09-25
XIDIAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] To sum up, although the existing reconfigurable transmission array antennas use different technologies to expand the bandwidth, their relative bandwidth is still relatively narrow, which greatly limits their application range.

Method used

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  • Broadband reconfigurable transmission array antenna based on polarization rotating surface
  • Broadband reconfigurable transmission array antenna based on polarization rotating surface
  • Broadband reconfigurable transmission array antenna based on polarization rotating surface

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Embodiment Construction

[0028] Below in conjunction with accompanying drawing and specific embodiment, the present invention is described in further detail:

[0029] refer to figure 1 , the present invention includes an array composed of M×N periodically arranged reconfigurable transmission array antenna units 1, and a feed source 2 and a main control circuit board 3. The feed source 2 adopts the phase of the standard gain horn antenna The center is located on the central normal of the array. In this embodiment, the focal diameter ratio of the equivalent phase center of the horn antenna to the side length of the array is 1.24. In this embodiment, M=16, N=16.

[0030] The main control circuit board 3 is connected to the polarization grid 13 on the upper surface of the first dielectric board 11 and the lower surface of the second dielectric board 12, and its main function is to encode the on and off states of all PIN diodes, thereby realizing antenna beam scanning function, the main control circuit b...

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Abstract

The invention provides a broadband reconfigurable transmission array antenna based on a polarization rotation surface, and aims to solve the problem that in the prior art, the bandwidth is narrow. Thebroadband reconfigurable transmission array antenna comprises an array surface composed of M*N periodically arranged reconfigurable transmission array antenna units, a feed source and a main controlcircuit board, wherein the phase shift structure of each reconfigurable transmission array antenna unit comprises two T-shaped microstrip structures and a PIN diode loaded between the bottom ends of longitudinal branches of the two T-shaped microstrip structures. According to the invention, the positive and negative directions of emergent wave polarization are changed by controlling conduction andcut-off states of a PIN diode, and the emergent waves in the two states physically form a broadband 180-degree phase difference, so that the defect of obvious frequency change caused by using a receiving and re-transmitting structure in the prior art is avoided, and the working bandwidth of the reconfigurable transmission array antenna is effectively expanded.

Description

technical field [0001] The invention belongs to the technical field of antennas, and relates to a transmission array antenna, in particular to a reconfigurable broadband transmission array antenna with scannable beams, which can be used in the technical fields of wireless communication such as astronomical exploration and satellite communication. Background technique [0002] The transmission array antenna is composed of a feed antenna and a planar array. Each unit of the planar array has the ability to adjust the phase to compensate for the phase delay caused by the different spatial paths of the feed irradiating each unit on the array, thus forming required high-gain radiation characteristics. The reconfigurable transmission array antenna is to load the PIN diode on the traditional transmission array antenna unit, discretize the transmission phase of the array unit, and then use the main control circuit board to digitally encode the on and off states of the PIN diode on th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q15/00H01Q13/02H01Q15/24H01Q21/00H01Q21/24
CPCH01Q13/02H01Q15/002H01Q15/242H01Q21/00H01Q21/245
Inventor 赵钢罗传威陈官韬焦永昌丁金闪张立翁子彬
Owner XIDIAN UNIV