Broadband integrated balun and antenna unit

An antenna unit and broadband technology, applied in the direction of antenna, antenna coupling, antenna grounding device, etc., can solve the problems of isolation, gain difference, working bandwidth and radiation pattern that cannot meet the design requirements, etc., to achieve low cost and guarantee Ease of production and the effect of increasing the aperture area

Active Publication Date: 2020-03-24
SOUTHEAST UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The working frequency band of traditional base station antennas usually covers 1.4-2.7GHz or 1.7-2.7GHz, and the working bandwidth and radiation pattern cannot meet the design requir

Method used

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  • Broadband integrated balun and antenna unit
  • Broadband integrated balun and antenna unit
  • Broadband integrated balun and antenna unit

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Such as Figure 2-Figure 8 As mentioned above, a broadband integrated balun includes a dielectric substrate 211 , a microstrip line 212 and a metal strip. The microstrip line 212 is printed on the front side of the dielectric substrate 211 , and the metal strip 213 is printed on the back side of the dielectric substrate 211 . The metal strip is a first metal strip and a second metal strip arranged in the same plane, an isolation gap is formed between the first metal strip and the second metal strip, and the first metal strip and the second metal strip forming the isolation gap Both sides of the two metal strips are provided with tooth-shaped gaps.

[0040] The 212 microstrip line includes a first microstrip segment 2121 , a second microstrip segment 2122 and a third microstrip segment 2123 , and the second microstrip segment 2122 connects the first microstrip segment 2121 and the second microstrip segment 2123 .

[0041] The first microstrip section 2121 is located at ...

Embodiment 2

[0046] Figure 1-3 Shown is a beam-stabilized MIMO antenna unit that can be used in 2G / 3G / 4G / 5G mobile communications, including a reflection ground 1 , a balun unit 2 , a radiation unit 3 and a parasitic array 4 .

[0047]The parasitic array 4 is fixed above the radiating unit 3 through insulating pillars, and the radiating unit 3 is fixed on the reflector 1 by the balun unit 2 .

[0048] The parasitic array 4 is composed of a group of parasitic unit arrays 42 printed on the surface of the dielectric substrate 41 .

[0049] The radiation unit 3 is composed of the first radiation arm 31, the second radiation arm 32, the third radiation arm 33, and the fourth radiation arm 34 printed on the surface of the medium substrate. The first radiation arm 31 and the third radiation arm 33 constitute a -45 ° polarized radiation, the second radiation arm 32 and the fourth radiation arm 34 constitute +45° polarized radiation.

[0050] The balun unit 2 includes a first broadband integrate...

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Abstract

The invention discloses a broadband integrated balun and an antenna unit, the broadband integrated balun comprises a dielectric substrate, a microstrip line and a metal strip, the microstrip line is arranged on one side of the dielectric substrate, and the metal strip is arranged on the other side of the dielectric substrate; wherein the metal strips are a first metal strip and a second metal strip which are arranged in a coplanar mode, an isolation gap is formed between the first metal strip and the second metal strip, and tooth-shaped gaps are formed in one side, where the isolation gap is formed, of the first metal strip and one side, where the isolation gap is formed, of the second metal strip. The antenna unit disclosed by the invention can realize 2/3/4/5G frequency band (1.7-3.6 GHz) +/-45-degree dual-polarization stable electromagnetic radiation, and has the characteristics of wide working frequency band, high isolation degree and stable radiation pattern.

Description

technical field [0001] The invention relates to the field of mobile communication, in particular to a base station antenna with an integrated balun suitable for 2G / 3G / 4G / 5G mobile communication. Background technique [0002] With the development of 5G mobile communication technology, traditional 2G / 3G / 4G will coexist with 5G as a supplementary communication method for a long time. Designing a beam-stabilized MIMO antenna unit with a working frequency band covering 2G / 3G / 4G / 5G mobile communications can not only improve the electromagnetic compatibility problem of base station antennas, but also save installation space and reduce operating costs, so it has great commercial value. [0003] The working frequency band of traditional base station antennas usually covers 1.4-2.7GHz or 1.7-2.7GHz, and the working bandwidth and radiation pattern cannot meet the design requirements. 5G antennas (3.5GHz, 26.5GHz, and 40GHz) can only support a single operating frequency band, and the i...

Claims

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Application Information

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IPC IPC(8): H01Q1/38H01Q1/50H01Q1/52H01Q1/48H01Q19/10H01Q15/24
CPCH01Q1/38H01Q1/50H01Q1/52H01Q1/48H01Q19/104H01Q15/24
Inventor 傅随道曹振新陈鹏曹蕊江传民
Owner SOUTHEAST UNIV
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