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Intersected tapered slot antenna with reflecting plate

A technology of gradient slots and reflectors, applied in the field of gradient slot antennas, can solve the problems of difficulty in maintaining the flatness of the antenna plane and the relative position accuracy, and achieve the effects of stable lobe pattern, high port isolation, and wide frequency band

Inactive Publication Date: 2016-09-21
BEIJING UNIV OF POSTS & TELECOMM
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0004] Generally, the thickness of a single tapered slot antenna is very thin, and it is difficult to maintain the flatness of the antenna plane by virtue of its own medium.
In addition, when two tapered slot antennas need to be perpendicular to each other, the relative position accuracy is more difficult to maintain

Method used

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  • Intersected tapered slot antenna with reflecting plate
  • Intersected tapered slot antenna with reflecting plate
  • Intersected tapered slot antenna with reflecting plate

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Embodiment Construction

[0030] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings.

[0031] figure 1 is a structural diagram of a single tapered slot antenna in the embodiment. The tapered slot antenna is composed of a ground plane radiator 1, a central dielectric 2 and a microstrip feed balun 3. There is a slot 1c in the center of the radiation sheet on the ground plane. The slot extends forward and gradually expands to form 1a according to the law of the tangent function, and forms a loop through the circular structure 1d backward. A resistor 4 is connected to the circular structure to guide the flow of current. There are some slot structures 1b on both sides of the radiation sheet, the length of the slots changes according to the law of the hyperbolic cosine function, and the width is fixed. The die...

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Abstract

The invention discloses a tapered slot antenna with a cross structure with reflectors, which comprises two mutually perpendicular tapered slot antennas (1, 2), a reflector (3) and a plastic structure used for supporting and stabilizing the antenna; the tapered slot antenna Two dielectric plates are used for cladding. This stable method effectively solves the problem of easy deformation caused by the thin medium of the tapered slot antenna itself, so as to ensure the vertical accuracy of the two tapered slot antennas after they cross, so as to improve the two The isolation effect of the antenna. The antenna of the invention can realize impedance matching and stability of lobe width in a wide frequency range, provide ±45° polarization and high front-to-back ratio, and meet the requirements of mobile communication base station antennas.

Description

technical field [0001] The invention relates to the field of microwave communication, and more specifically relates to a cross-structure tapered slot antenna with reflectors used as a mobile communication base station antenna. Background technique [0002] Due to its ultra-wide frequency characteristics, the tapered slot antenna is widely used in printed circuit board antennas to achieve impedance matching and far-field requirements in a wide frequency range. Although most mobile communication base station antennas are dipole antennas and patch antennas, the advantages of tapered slot antennas in bandwidth make them fully qualified for the task of base station antennas. Modern mobile base station antennas require a polarization of plus or minus 45 degrees, so in order to achieve the polarization distribution of two vertical planes, two identical tapered slot antennas must be vertically crossed together. The mobile communication cell is divided into several sectors, and diff...

Claims

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Application Information

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IPC IPC(8): H01Q1/36H01Q1/50
CPCH01Q1/36H01Q1/50
Inventor 苏明刘元安高兆栋唐碧华于翠屏黎淑兰吴永乐王卫民
Owner BEIJING UNIV OF POSTS & TELECOMM
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