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Novel millimeter-wave low-profile planar differential double-helix antenna

A double-helix, millimeter-wave technology, applied in the direction of antenna, antenna grounding device, antenna grounding switch structure connection, etc., can solve the problems of planar helical antennas that cannot apply differential RF front-ends, asymmetrical pattern, poor radiation directivity, etc., to achieve Enrich practical applications, improve circular polarization gain, and gain stability

Pending Publication Date: 2020-08-25
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The purpose of the present invention is to overcome the above-mentioned defects in the prior art, provide a novel millimeter-wave low-profile planar differential double helix antenna, and solve the problem that the existing single-ended planar helical antenna cannot be applied to a differential radio frequency front end, and the pattern is asymmetrical, Problems such as poor radiation directionality and unstable gain, and are suitable for 5G millimeter wave frequency bands, making the application of millimeter wave antennas in 5G frequency bands more abundant and flexible

Method used

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  • Novel millimeter-wave low-profile planar differential double-helix antenna

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Embodiment 1

[0041] This embodiment discloses a novel millimeter-wave low-profile planar differential double-helix antenna. The differential double-helix antenna is a planar structure and consists of three parts. Differential feed is realized, the feeding structures located on the front and bottom of the dielectric board are completely symmetrical, port 1 is located on the front of the dielectric board, and is connected to the strip line on the front of the dielectric board, port 2 is located on the bottom of the dielectric board, and connected to the bottom of the dielectric board The second part is a planar spiral structure, one end of the spiral is connected with the strip line, the spiral connected with the strip line on the front of the dielectric plate is called the first spiral, and the spiral connected with the bottom surface of the dielectric plate is called the second spiral; The other end of the helix extends axially. The number of turns of the first helix and the second helix a...

Embodiment 2

[0043] This embodiment gives a specific design example of a low-profile planar differential double helix antenna working in the 5G millimeter wave frequency band (24.25-29.5 GHz). The three-dimensional structure of the low-profile planar differential double helix antenna disclosed in this embodiment is as follows: figure 2 As shown, the top and bottom views are as image 3 , Figure 4 shown.

[0044] 1. Feed structure

[0045] The dielectric board adopts Rogers RT / duroid 5880, the quantity is one piece, the dielectric constant is 2.2, the loss tangent is 0.0009, and the thickness is 1.575mm. The strip lines located on both sides of the bottom of the same dielectric board realize differential feeding. The two sides of the bottom of the feed structure are completely symmetrical. Port 1 is located on the top of the dielectric board, and port 2 is located on the bottom of the dielectric board. On both sides of the stripline are metal grounds printed on both sides of the botto...

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Abstract

The invention discloses a novel millimeter-wave low-profile planar differential double-helix antenna. The antenna consists of three parts: a first part has a feed structure, the differential feed is realized through strip lines located at two sides of the front bottom of the same dielectric plate, and the two sides of the front bottom are completely symmetrical; a second part is of a planar helixstructure, one end of the helix is connected with the strip line, and the other end axially extends, the planar helix is formed by connecting metal strips printed on the front surface and the bottom surface of the dielectric plate with the metalized via holes in a staggered manner and is of a double-helix structure, the diameter of the helix is gradually increased, and the structures of the frontsurface and the bottom surface of the dielectric plate are in 180-degree rotational symmetry; and a third part is of a parasitic structure and is composed of a metallized via hole and metal strips printed on the two sides of the front bottom of the dielectric plate. The parasitic unit is disposed around the helix. The antenna has the advantages of being low in profile, wide in bandwidth, stable incircular polarization gain, good in radiation directivity, simple in structure, easy to process and the like, and has a good application prospect in the 5G millimeter wave frequency band.

Description

technical field [0001] The invention relates to the technical field of 5G millimeter-wave antennas, in particular to a novel millimeter-wave low-profile planar differential double-helix antenna. Background technique [0002] With the rapid development of wireless communication technology, people's requirements for communication quality are also constantly improving. Due to the increasing utilization and development of the microwave frequency band, the microwave frequency band becomes more and more crowded, and the available bandwidth becomes narrower and narrower. Millimeter wave technology is an important direction of wireless technology development in recent years. It has very important value in military, civil and industrial fields, and has attracted extensive attention from academia and industry. Especially with the advent of the 5G era, the research and development of 5G millimeter wave antennas has become crucial. [0003] Modern communication systems need to achieve...

Claims

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Application Information

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IPC IPC(8): H01Q1/36H01Q1/38H01Q1/48H01Q1/50H01Q5/385H01Q15/24H01Q21/24
CPCH01Q1/36H01Q1/38H01Q1/48H01Q1/50H01Q5/385H01Q15/24H01Q21/24
Inventor 靳贵平杨菊廖绍伟
Owner SOUTH CHINA UNIV OF TECH
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