Multiband antenna with cross-band scattering suppression function

A multi-band antenna and functional technology, which is applied to antennas, antenna coupling, and devices that enable antennas to work in different bands at the same time, can solve the problem of high-frequency sub-antenna radiation pattern distortion, deterioration of multi-band antenna performance, and adverse effects on user experience and other problems, to achieve the effect of suppressing scattering interference, good scattering suppression effect, and ensuring consistency

Pending Publication Date: 2020-10-16
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This will seriously deteriorate the performance of multi-band antennas, specifically manifested in the deterioration of the port isolation between different frequency band sub-antennas, the distortion of the radiation pattern of high-frequency sub-antennas, etc., which will adversely affect the user experience

Method used

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  • Multiband antenna with cross-band scattering suppression function
  • Multiband antenna with cross-band scattering suppression function
  • Multiband antenna with cross-band scattering suppression function

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Such as figure 1 and figure 2 As shown, the multi-band antenna with cross-band scattering suppression function provided by this embodiment includes a low-frequency sub-antenna 202 and four high-frequency sub-antennas 102a-102d, and the low-frequency sub-antenna 202 is located at the four high-frequency sub-antennas 102a In the middle of -102d, the low-frequency sub-antenna 202 and the four high-frequency sub-antennas 102a-102d work in different frequency bands. 1690MHz to 2690MHz; the low-frequency sub-antenna 202 has four radiating arms 402a-402d, and the radiating arms 402a-402d are designed on the dielectric substrate 302, and the four radiating arms 402a-402d of the low-frequency sub-antenna 202 have the same physical structure. It is understood that the rotation of the radial arms 402a-402d in space does not affect their physical structural consistency. Such as image 3 As shown, the radiation arm 402a is divided into three arm sections 502a-502c, the arm secti...

Embodiment 2

[0038] Such as Figure 8As shown, the multi-band antenna with cross-band scattering suppression function provided by this embodiment includes a low-frequency sub-antenna 203 and four high-frequency sub-antennas 103a-103d, and the low-frequency sub-antenna 203 is located at the four high-frequency sub-antennas 103a In the middle of -103d, the low-frequency sub-antenna 203 and the four high-frequency sub-antennas 103a-103d work in different frequency bands, and the four radiation arms 403a-403d of the low-frequency sub-antenna 203 have the same physical structure. It should be understood that the radiation The rotation of the arms 403a-403d in space does not affect their physical conformity. Such as Figure 9 As shown, the radiation arm 403a is divided into three arm sections 503a-503c, the arm section 503a and the arm section 503b are electrically connected through the decoupling structure 603a, and the arm section 503b and the arm section 503c are electrically connected throu...

Embodiment 3

[0040] Such as Figure 11 As shown, the multi-band antenna with cross-band scattering suppression function provided by this embodiment includes a low-frequency sub-antenna 204 and four high-frequency sub-antennas 104a-104d, and the low-frequency sub-antenna 204 is located at the four high-frequency sub-antennas 104a In the middle of -104d, the low-frequency sub-antenna 204 and the four high-frequency sub-antennas 104a-104d work in different frequency bands, and the four radiation arms 404a-404d of the low-frequency sub-antenna 204 have the same physical structure. It should be understood that the rotation of the radiation arms 404a-404d in space does not affect the consistency of their physical structure. Such as Figure 12 As shown, the radiation arm 404a is divided into three arm sections 504a-504c, the arm section 504a is electrically connected to the arm section 504b through the decoupling structure 604a, and the arm section 504b and the arm section 504c are electrically ...

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Abstract

The invention discloses a multiband antenna with a cross-band scattering suppression function. The antenna comprises at least one low-frequency sub-antenna and at least one high-frequency sub-antenna,wherein the low-frequency sub-antenna and the high-frequency sub-antenna work in different frequency bands; the low-frequency sub-antenna comprises at least one radiation arm. The radiation arm is divided into a plurality of arm sections in the arm length direction of the radiation arm, and every two adjacent arm sections are connected through a decoupling structure. The decoupling structure is composed of a thin metal connecting line and at least one metal branch knot, wherein the metal branch knots are connected with the thin metal connecting lines; the two ends of the thin metal connectingwire are electrically connected with the two arm sections respectively; one end of each metal branch knot is electrically connected with the corresponding arm section, and the other end of each metalbranch knot is disconnected, so the high-frequency induction current on the metal branch knots can counteract the high-frequency induction current on the fine metal connecting wires in a reverse direction, the scattering interference of the low-frequency sub-antenna to the high-frequency sub-antenna is suppressed, and a stable high-frequency radiation pattern is obtained.

Description

technical field [0001] The invention relates to the technical field of wireless communication, in particular to a multi-band antenna with cross-band scattering suppression function. Background technique [0002] It is known in the industry that while providing more diversified services, multi-band antennas can effectively improve the space utilization of antennas and reduce the cost of antenna equipment and site rental. Therefore, the multi-band antenna has become an important research direction in the field of new generation wireless communication. A multi-band antenna usually consists of sub-antennas working in different frequency bands, including at least one low-frequency sub-antenna and at least one high-frequency sub-antenna. [0003] Each sub-antenna in the multi-band antenna is placed in a limited space, and there will be strong cross-band scattering interference between different sub-antennas. This will severely deteriorate the performance of the multi-band antenn...

Claims

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Application Information

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IPC IPC(8): H01Q5/28H01Q1/36H01Q1/38H01Q1/52
CPCH01Q1/36H01Q1/38H01Q1/52H01Q5/28
Inventor 褚庆昕常玉林温成龙吴锐
Owner SOUTH CHINA UNIV OF TECH
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