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Broadband base station antenna

A base station antenna and broadband technology, which is applied in the field of broadband base station antennas, can solve the problems of large size and cannot meet the requirements of practical applications, and achieve the effects of high isolation, reduced vertical spacing, and high gain

Pending Publication Date: 2017-05-31
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This has a guiding effect on the design of multi-frequency nested antennas, but because the size of the low-frequency array will be relatively large, it cannot meet the actual application requirements of modern mobile communication systems

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 2

[0036] Such as Figure 6 As shown, the difference from Embodiment 1 is that the second arm section 109 of this embodiment is parallel to the square metal reflector 2 and bent inward, which is beneficial to miniaturization.

Embodiment 3

[0038] Such as Figure 7 As shown, the difference from Embodiments 1 and 2 is that the second arm section 109 of this embodiment has an inclination angle to the square metal reflector 2 and is bent inward, which is conducive to further miniaturization.

Embodiment 4

[0040] Such as Figure 8 As shown, the difference from Embodiment 1 is that this embodiment only uses two array elements 1 to achieve +45° polarization and -45° polarization. 2 The line connecting the midpoints of opposite sides is a line of symmetry, showing a mirror image structure.

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Abstract

The invention discloses a broadband base station antenna which comprises a metal reflecting plate with flanged sides, and a plurality of arrays arranged on the reflecting plate, wherein a square structure is formed by enclosing of the plurality of arrays, and the arrays and the square metal reflecting plate have the same center; the arrays on two opposite sides of the square structure all are connected in parallel through a coaxial feeder, and the arrays on one pair of sides are polarized at +45 degrees and the arrays on the other pair of sides are polarized at -45 degrees; each array comprises two same array arms, two baluns matched with the two array arms, a resonator, an inverted U-shaped feeding sheet and a base; and each array arm comprises three arm sections, so that the miniaturization of the sizes of the oscillators is achieved. A novel resonant mode can be introduced by loading the resonator near the oscillator arms, great increase of the bandwidth can be achieved by properly controlling the resonant mode within a working frequency range and all low-frequency ranges of 698MHz-960MHz of mobile communication can be covered. Meanwhile, the broadband base station antenna also has the characteristics of high gain, high isolation, a high cross-polarization ratio and a stable radiation pattern.

Description

technical field [0001] The invention relates to the technical field of mobile communication, in particular to a broadband base station antenna. Background technique [0002] In modern mobile communication systems, the electromagnetic environment is becoming more and more complex, and the number of mobile communication users is increasing rapidly. The base station antennas used for mobile communication have changed from the early single-frequency single-polarization to the current multi-frequency dual-polarization. Higher requirements are put forward for the design of the base station antenna, not only to be able to cover a wider bandwidth, but also to have good radiation characteristics and circuit characteristics. Due to the high penetration and long-distance coverage of the LTE 700MHz frequency band, fewer base stations need to be built compared to the high-frequency band. At present, LTE700MHz has been commercially used in Europe and the United States, and Radio and Tele...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q1/36H01Q1/50H01Q5/10H01Q5/20H01Q1/52H01Q19/10H01Q21/00H01Q21/24
CPCH01Q1/36H01Q1/521H01Q5/10H01Q5/20H01Q19/104H01Q21/0006H01Q21/24
Inventor 褚庆昕吴锐
Owner SOUTH CHINA UNIV OF TECH
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