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Miniaturized high-gain double-frequency WIFI antenna

A high-gain, antenna technology, applied in antennas, antenna arrays, resonant antennas, etc., can solve the problems of low gain and large size of WIFI antennas, achieve miniaturization design, overcome large size, small gain and small omnidirectionality

Active Publication Date: 2020-01-10
XIDIAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the above-mentioned deficiencies in the prior art, and proposes a miniaturized high-gain dual-band WIFI antenna to solve the technical problems of large size and low gain of the existing WIFI antenna

Method used

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  • Miniaturized high-gain double-frequency WIFI antenna
  • Miniaturized high-gain double-frequency WIFI antenna
  • Miniaturized high-gain double-frequency WIFI antenna

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Refer to attached figure 1 , attached figure 2 , attached image 3 , attached Figure 4 , attached Figure 5 And attached Image 6

[0036] A miniaturized high-gain dual-band WIFI antenna, including a dielectric plate 1, a microstrip feed network 2, a pad 3, two symmetrical dipole radiating elements 4, an asymmetrical dipole radiating element 5 and "u" Shaped branch 6, the pad 3 is composed of three identical rectangular pads 3.1 and an annular pad 3.2;

[0037]The microstrip feed network 2 includes a ladder-shaped microstrip line 2.1 printed on the upper layer of the dielectric board 1 and a ladder-shaped microstrip line 2.2 on the lower layer; the two symmetrical dipole units 4 are respectively located at both ends of the dielectric board 1; Each symmetrical dipole unit 4 includes two dipole arms 4.1 of the same structure printed on the upper and lower layers of the dielectric board 1, the dipole arms 4.1 are composed of the first low-frequency branch 4.1.1 and...

Embodiment 2

[0049] This embodiment has the same structure as Embodiment 1, only the following parameters are adjusted:

[0050] The length and width of the dielectric board 1 are L11 and L12 respectively, wherein, L11=166-170mm, L12=9-13mm, L11=166mm, L12=9mm.

[0051] The distances between the upper dipole arms 4.1 of the two symmetrical dipole units 4 and the upper dipole arms 5.1 of the asymmetric dipole unit 5 are L21 and L22 respectively, wherein L21=63~67mm , L22=52~56mm, L21=63mm, L22=52mm.

[0052] The lengths of the first low-frequency branch 4.1.1 and the first high-frequency branch 4.1.2 are L41 and L42 respectively, wherein, L41=17.3-19.3mm, L42=12-14mm, L41=17.3mm, L42=12mm ; The width of the first low-frequency branch 4.1.1 is L43, wherein, L43=4.3-6.3mm, L43=4.3mm.

[0053] The lengths of the second low-frequency branch 5.1.1 and the second high-frequency branch 5.1.2 are L51 and L52 respectively, wherein L51=21.3-23.3mm, L52=12-14mm, L51=21.3mm, L52=12mm; The lengths of...

Embodiment 3

[0057] The length and width of the dielectric board 1 are L11 and L12 respectively, wherein L11=166-170mm, L12=9-13mm, L11=170mm, L12=13mm.

[0058] The distances between the upper dipole arms 4.1 of the two symmetrical dipole units 4 and the upper dipole arms 5.1 of the asymmetric dipole unit 5 are L21 and L22 respectively, wherein L21=63~67mm , L22=52~56mm, L21=67mm, L22=56mm.

[0059] The lengths of the first low-frequency branch 4.1.1 and the first high-frequency branch 4.1.2 are L41 and L42 respectively, wherein, L41=17.3-19.3mm, L42=12-14mm, L41=19.3mm, L42=14mm ; The width of the first low-frequency branch 4.1.1 is L43, wherein, L43=4.3-6.3mm, L43=6.3mm.

[0060] The lengths of the second low-frequency branch 5.1.1 and the second high-frequency branch 5.1.2 are L51 and L52 respectively, wherein L51=21.3-23.3mm, L52=12-14mm, L51=23.3mm, L52=14mm; The lengths of the third low-frequency branch 5.2.1 and the third high-frequency branch 5.2.2 are L53 and L54 respectively, ...

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Abstract

The invention provides a miniaturized high-gain double-frequency WIFI antenna, which comprises a dielectric plate, a micro-strip feed network, a bonding pad, two symmetrical dipole radiation units, anasymmetric dipole radiation unit and u-shaped stubs. The micro-strip feed network comprises stepped micro-strip lines printed on the upper layer and the lower layer of the dielectric plate. Each dipole unit comprises two dipole arms printed on the upper layer and the lower layer of the dielectric plate, and each dipole arm is composed of a low-frequency radiation stub and a high-frequency radiation stub which respectively cover low-frequency and high-frequency bandwidths. The dipole units are positioned on the same side of the micro-strip feed network, so that miniaturization of the antenna is realized. The asymmetric dipole unit is connected with one symmetric dipole unit in parallel and then connected with the other symmetric dipole unit in series, so that the currents of the radiationunits of the antenna is in the same phase, and the gain of the antenna gain is increased. The u-shaped stubs play a role in adjusting the phase of the antenna. The technical problems of overlarge size, relatively low gain and relatively poor omnidirectivity of an antenna are solved.

Description

technical field [0001] The invention belongs to the field of communication technology, and further relates to a WIFi antenna based on a dipole array antenna in the field of electromagnetic field and microwave technology. The high-gain characteristics of the router and at the same time ensure the omnidirectional radiation characteristics of the antenna. Background technique [0002] With the rapid development of mobile communications, WIFI terminals have become an indispensable part of people's daily life. As a necessary part of WIFI terminals, dual-band WIFI antennas are widely used in various router devices. Dual-band WIFI antennas can be divided into two types: built-in and external according to the installation method. Due to factors such as size, cost, installation method and location, internal antennas have insufficient performance compared to external antennas. External antennas are generally in the form of monopole antennas or crossed dipole antennas, which are wide...

Claims

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Application Information

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IPC IPC(8): H01Q1/38H01Q1/50H01Q3/30H01Q5/20H01Q5/307H01Q9/16H01Q21/00
CPCH01Q1/38H01Q1/50H01Q3/30H01Q5/20H01Q5/307H01Q9/16H01Q21/0075
Inventor 刘英刘爽贾永涛孙磊林维涛罗奕
Owner XIDIAN UNIV
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