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A Low Profile Wide Bandwidth Beam Antenna with Stub Loading

A low-profile, wide-bandwidth technology, applied in the field of low-profile wide-bandwidth beam antennas, can solve problems such as difficult impedance matching, and achieve the effects of low production cost, increased design freedom, and easy processing

Active Publication Date: 2021-09-21
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the case of other dielectric materials, the structure is difficult to achieve good impedance matching

Method used

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  • A Low Profile Wide Bandwidth Beam Antenna with Stub Loading
  • A Low Profile Wide Bandwidth Beam Antenna with Stub Loading
  • A Low Profile Wide Bandwidth Beam Antenna with Stub Loading

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] Embodiment 1 will be described by taking an antenna model with a dielectric substrate material having a dielectric constant of 2.65, a thickness of 2 mm, and a loss tangent less than 0.0015 as an example, but it is also applicable to materials with other dielectric constants.

[0046] Such as Figure 1a , Figure 1b , Figure 1c As shown, a stub-loaded low-profile wide-bandwidth beam antenna of this embodiment includes a rectangular magnetic dipole 11 and a dielectric substrate 15;

[0047] The magnetic dipole 11 includes a magnetic dipole upper surface 111 and a magnetic dipole lower surface 112, and the magnetic dipole lower surface 112 and the magnetic dipole upper surface 111 are respectively printed on the upper and lower surfaces of the dielectric substrate 15 The upper surface 111 of the magnetic dipole is arranged on the surface of the medium substrate 15; the lower surface 112 of the magnetic dipole is connected with the upper surface 111 of the magnetic dipo...

Embodiment 2

[0058] It should be noted that the technical solution of the present invention is also applicable to millimeter wave working frequency bands. Such as Figure 12a , 12b As shown in , 12c, different from the above embodiment, the millimeter wave antenna sample is processed on the RT / duroid 5880 plate, the dielectric constant is 2.2, and the dielectric substrate 35 with a thickness of 0.508mm, and the upper surface of the magnetic dipole 111 and the magnetic The lower surface 112 of the dipole is short-circuited by the short-circuit wall 33 . From Figure 13 It can be seen from the figure that the millimeter wave antenna can cover the frequency band from 24.68GHz to 34.74GHz, with a relative bandwidth of 33.9%. Likewise, the mmWave antenna has stable gain and wide beam characteristics over the entire operating frequency range.

[0059] Figure 14a , Figure 14b , Figure 15a and Figure 15b The simulation pattern of 26.5GHz and 31.6GHz is given, and it can be seen from th...

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Abstract

The invention discloses a branch-loaded low-profile wide-bandwidth beam antenna. The antenna includes a magnetic dipole, a dielectric substrate, and a feeding coaxial; the magnetic dipole includes an upper surface of the magnetic dipole and a magnetic dipole. The lower surface of the magnetic dipole, the lower surface of the magnetic dipole and the upper surface of the magnetic dipole are respectively printed on the upper and lower surfaces of the medium substrate; the upper surface of the magnetic dipole is arranged on the surface of the medium substrate; the lower surface of the magnetic dipole The surface is connected to the upper surface of the magnetic dipole through a short-circuit nail to form a rectangular frame, wherein one side of the rectangular frame is short-circuited by a short-circuit nail, and three side openings are opened, and the opening in the +X direction is used as the main radiation aperture of the antenna; The upper surface of the magnetic dipole antenna away from the side of the short-circuit nail introduces a parasitic strip, the parasitic strip is located in the middle of the side of the upper surface of the magnetic dipole, and the feeding coaxial is located near the opening of the parasitic strip.

Description

technical field [0001] The invention relates to the antenna field of electronic communication technology, and provides a low-profile and wide-bandwidth beam antenna loaded with branches. Background technique [0002] Among existing communication technologies, wide-beam antennas can achieve wider coverage and scanning range, thus attracting extensive attention. In the current beam broadening technology, the profile height of the antenna structure is usually exchanged for the radiation characteristics of the wide beam, but there are few research methods to achieve the wide beam characteristics in the application scenario of low profile. In addition, due to its low-profile structural characteristics, the magnetic dipole antenna makes impedance matching difficult and its working bandwidth is narrow. In order to solve the above problems, there is a prior art sectoral magnetic dipole antenna that utilizes parasitic strips to realize wide beams (Cheng Shen, Wen-Jun Lu, and Lei Zhu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01Q1/36H01Q1/38H01Q1/50
CPCH01Q1/36H01Q1/38H01Q1/50
Inventor 张文海薛泉廖绍伟车文荃
Owner SOUTH CHINA UNIV OF TECH
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