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Low-frequency radiation unit and multi-frequency antenna with the low-frequency radiation unit

A technology of radiating unit and multi-frequency antenna, applied in the direction of radiating element structure, antenna, antenna coupling, etc., can solve the problems of multi-frequency mutual coupling and broadband mutual coupling that are difficult to solve, achieve simple preparation process, good market application prospects, The effect of good electrical properties and radiation properties

Active Publication Date: 2018-08-14
JIANGSU HENGXIN TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the existing technology, usually only the electrical performance of high frequency or low frequency is considered separately, and debugging is carried out during actual use. At present, the following implementation schemes are mainly used: the first one is to adjust the distance between high and low frequency units; the second one is to adjust the distance between high and low frequency units. , using a side-by-side array form; the third is to raise the high-frequency unit; set up open-circuit branches, etc., but it is often difficult to solve multi-frequency mutual coupling and broadband mutual coupling by using the above methods

Method used

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  • Low-frequency radiation unit and multi-frequency antenna with the low-frequency radiation unit
  • Low-frequency radiation unit and multi-frequency antenna with the low-frequency radiation unit
  • Low-frequency radiation unit and multi-frequency antenna with the low-frequency radiation unit

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Effect test

Embodiment 1

[0027] In order to reduce the influence of the low-frequency radiation unit on the spatial mutual coupling of the high-frequency radiation unit in the multi-frequency antenna, a low-frequency radiation unit is designed and developed in this embodiment. Such as figure 1 As shown, the low-frequency radiation unit of this embodiment includes four radiating arms perpendicular to each other, and two parallel filtering branches are formed in each radiating arm. Specifically, each filter branch includes a long through hole groove extending along the length direction of the radiating arm, and a short through hole groove provided at one end of the long through hole groove, and the short through hole The groove is perpendicular to the long through hole groove and the short through hole groove extends outward along the width direction of the radiation arm, and a corrugated structure is formed on the side wall of the long through hole groove. The length of the slot is 5-50 times the length...

Embodiment 2

[0031] In order to reduce the influence of the low-frequency radiation unit on the spatial mutual coupling of the high-frequency radiation unit in the multi-frequency antenna, another low-frequency radiation unit is designed in this embodiment. Such as Figure 8 As shown, the low-frequency radiation unit of this embodiment includes four radiating arms perpendicular to each other, and two parallel filtering branches are formed in each radiating arm. Specifically, each filter branch includes a long through hole groove extending along the length direction of the radiating arm, and a short through hole groove provided at one end of the long through hole groove, and the short through hole The groove is perpendicular to the long through hole groove and the short through hole groove extends outward along the width direction of the radiation arm. And each long through hole slot is divided into two sections of sub through hole grooves, the two sections of sub through hole grooves are no...

Embodiment 3

[0033] The difference from the low-frequency radiation unit of embodiment 1 is that the radiation arm is made of composite materials. Specifically, the radiation arm used in this embodiment is composed of a PTFE plate with a thickness of 4 mm and aluminum foil covering the upper and lower surfaces of the PTFE plate. , The thickness of the aluminum foil is 0.5mm. A plurality of holes parallel to the length direction of the PTFE plate are formed in the PTFE plate, and the diameter of the holes is 0.2 mm. The low-frequency radiation unit, the high-frequency radiation unit and the reflector are assembled into a multi-frequency antenna; specifically, the low-frequency radiation unit and the high-frequency radiation unit are fixed side by side on the reflector along the same axis. The operating frequency of the low-frequency radiation unit is 790-960 MHz, and the operating frequency of the high-frequency radiation unit is 1710-2170 MHz. The radiation arm prepared by using a PTFE pla...

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Abstract

The invention relates to a low-frequency radiation unit and a multifrequency antenna having the low-frequency radiation unit, belonging to the technical field of mobile communication base station antenna technology. The low-frequency radiation unit includes four mutually vertical radiation arms, two filtering branches are formed in each radiation arm, each filtering branch includes a long through-hole groove extending along the length direction of the radiation arm and a short through-hole groove arranged in one end of the long through-hole groove, the short through-hole groove is vertical to the long through-hole groove, and the short through-hole groove extends outwards along the width direction of the radiation arm. The low-frequency radiation unit has the filtering branches and has better electrical performance and the radiation performance, reduces the interference of the low-frequency radiation unit in a multi-frequency antenna array to a high-frequency radiation unit, thereby effectively improving the radome radiation performance index; and moreover, the low-frequency radiation unit is simple in preparation process and has good market application prospect.

Description

Technical field [0001] The present invention relates to the technical field of mobile communication base station antenna technology. More specifically, the present invention relates to a low-frequency radiation unit and a multi-frequency antenna with the low-frequency radiation unit. Background technique [0002] With the development of mobile communication technology, modern communication systems have put forward higher and higher requirements for various indicators of base station antennas, especially gain, bandwidth characteristics, spatial mutual coupling, and processing technology. At present, broadband multi-port base station antennas including multiple frequencies have become the development trend of communication systems. In recent years, the electrical performance of broadband, multi-port antennas has attracted much attention from operators and equipment vendors. [0003] Multi-frequency antennas refer to multiple antennas that can work in different frequency bands in the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01Q1/36H01Q1/52H01Q5/47H01Q5/20
CPCH01Q1/36H01Q1/521H01Q5/20H01Q5/47
Inventor 孙健张隆梁启迪华彦平周晨光
Owner JIANGSU HENGXIN TECH CO LTD