A reflectarray antenna and method with controllable sidelobe level
A reflection array antenna and reflection array technology, applied in directions such as antennas and electrical components, can solve the problems of lack of realization means for the control of the side lobe level of the reflection array, and achieve the effects of convenient processing and simple structure realization.
Active Publication Date: 2018-01-12
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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Problems solved by technology
[0003] However, so far there is still no specific article, patent or product to propose a method for controlling the sidelobe level of the reflectarray
Since the reflectarray lacks T / R components compared with the phased array antenna, there is no effective means to control the sidelobe level of the reflectarray
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[0014] The technical solutions of the present invention will be described in detail below in conjunction with the accompanying drawings, but the protection scope of the present invention is not limited to the implementation examples.
[0015] The method of the invention introduces a structural variable capable of controlling insertion loss into its basic period unit, and increases the variation range of the insertion loss amplitude, while ensuring that the introduced phase error remains below a certain value within the entire variable variation range. Under the condition of ensuring that the phase compensation is satisfied, the sidelobe level control of the reflectarray antenna is completed by changing the insertion loss of each unit of the array to achieve different array level distributions.
[0016] figure 1 It is a side view of the forward feeding mode adopted by the present invention. The feed source 101 is located directly above the center of the reflection front 102 . ...
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The invention discloses a reflective array antenna and method with controllable sidelobe levels, and belongs to the fields of wireless communication technology, radar technology and imaging technology. By introducing a structural variable that can control the insertion loss in its basic period unit, and increasing the variation range of the insertion loss amplitude, while ensuring that the introduced phase error remains below a certain value within the entire variable variation range. Under the condition of ensuring that the phase compensation is satisfied, the sidelobe level control of the reflectarray antenna is completed by changing the insertion loss of each unit of the array to achieve different array level distributions. The structure is simple to realize and easy to process, and can be used in various frequency bands such as microwave, millimeter wave and even terahertz. The inventive method proposes for the first time that the reflectarray antenna realizes the control of the side lobe level by controlling the insertion loss of each unit of the array.
Description
technical field [0001] The invention belongs to the fields of wireless communication technology, radar technology and imaging technology. In particular, it relates to a novel reflectarray antenna with controllable sidelobe levels. Background technique [0002] The reflectarray antenna is composed of a primary feed and a planar array. By changing the structural size of the unit on the array or rotating its angle to compensate for the phase delay caused by the different path lengths of the primary feed to each unit on the array, the electric field can be realized in the far field. same-phase superposition. Compared with the traditional parabolic antenna and phased array antenna, the reflectarray can overcome the bulky volume of the parabolic antenna and the expensive cost of the phased array antenna while achieving high gain. This has led to rapid development and application of the reflectarray antenna after it was proposed. [0003] However, so far there are no specific ar...
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IPC IPC(8): H01Q15/14H01Q19/10
Inventor 屈世伟陈龙易欢杨仕文聂在平
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA