Broadband directional circularly polarized antenna applied in wireless communication system

A wireless communication system and circularly polarized antenna technology, applied in the field of broadband directional circularly polarized antennas, can solve the problems of poor radiation pattern performance, narrow working bandwidth, etc., and achieve the effects of widening working bandwidth, light weight and low cost

Active Publication Date: 2018-09-04
XIDIAN UNIV
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  • Application Information

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Problems solved by technology

However, general circularly polarized antennas have narrow operating bandwidth and poor radiat

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  • Broadband directional circularly polarized antenna applied in wireless communication system
  • Broadband directional circularly polarized antenna applied in wireless communication system
  • Broadband directional circularly polarized antenna applied in wireless communication system

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Embodiment Construction

[0027] In order to make the object, technical solution and advantages of the present invention more clear, the present invention will be further described in detail below in conjunction with the embodiments and accompanying drawings. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0028] Such as figure 1 , 2 As shown in and 3, the broadband directional circularly polarized antenna applied in the wireless communication system of the present invention includes a dielectric substrate 1, a metal back cavity 2 and a metal floor 15 arranged below the dielectric substrate 1; the upper surface of the dielectric substrate 1 The upper fan-shaped symmetrical oscillator metal patch a3 and the upper fan-shaped symmetrical oscillator metal patch b4 are provided, and the lower surface of the dielectric substrate 1 is provided with the lower fan-shaped symmetrical oscillator metal patch...

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Abstract

The invention discloses a broadband directional circularly polarized antenna applied in a wireless communication system. The broadband directional circularly polarized antenna comprises a dielectric substrate, a metal back cavity and a metal floor; upper and lower surfaces of the dielectric substrate have fan-shaped symmetrical dipole metallic patches; rotation parasitic metallic patches are distributed between the fan-shaped symmetrical dipole metallic patches; the fan-shaped symmetrical dipole metallic patches and the rotation parasitic metallic patches are symmetrically distributed around the center; the fan-shaped symmetrical dipole metallic patches and the rotation parasitic metallic patches rotate 90 degrees around the center in order; phase shifting rings of the connected fan-shapedsymmetrical dipole metallic patches on the upper and lower surfaces of the dielectric substrate are connected to an inner core and an outer sheath of a coaxial line; and the coaxial line passes through the floor and is connected with an SMA connector. The invention is simple in structure, is easy to process, and has wide axial ratio bandwidth and impedance bandwidth; a directional diagram is relatively stable in the common frequency band, so that the broadband directional circularly polarized antenna can be used for a wide-band wireless communication system and can reduce the antenna complexity of the communication system.

Description

technical field [0001] The invention relates to a broadband directional circularly polarized antenna used in a wireless communication system. The antenna works at 1.35GHz to 2.94GHz and can be used in the wireless communication system. Background technique [0002] As the front end of receiving and transmitting of the wireless communication system, the performance index of the antenna is directly related to the communication quality. Low profile, broadband development, and good gain and pattern characteristics are also important indicators of antenna performance. However, general circularly polarized antennas have narrow operating bandwidth and poor radiation pattern performance (especially in the high frequency part of the operating frequency band). Contents of the invention [0003] In order to solve the above problems, the object of the present invention is to provide a broadband directional circularly polarized antenna that can be applied in a wireless communication s...

Claims

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Application Information

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IPC IPC(8): H01Q1/38H01Q1/50H01Q1/48
CPCH01Q1/38H01Q1/48H01Q1/50
Inventor 李亚鹏赵志鹏唐朝阳刘金海尹应增
Owner XIDIAN UNIV
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