Wide-band and high-gain WiFi (Wireless Fidelity) omnidirectional antenna

An omnidirectional antenna and high-gain technology, applied in the field of wireless communication, can solve the problems of uneven signal strength, small volume omnidirectional performance, narrow bandwidth, etc., achieve convenient and flexible adjustment, meet omnidirectional radiation characteristics, and suppress pattern declination effect

Active Publication Date: 2017-01-25
XIDIAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Aiming at the problems of narrow bandwidth, small gain and uneven signal strength at the same distance and different azimuth angles in the prior art, the present invention provides a wide-band, h

Method used

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  • Wide-band and high-gain WiFi (Wireless Fidelity) omnidirectional antenna
  • Wide-band and high-gain WiFi (Wireless Fidelity) omnidirectional antenna
  • Wide-band and high-gain WiFi (Wireless Fidelity) omnidirectional antenna

Examples

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Embodiment 1

[0027] The present invention is a broadband high-gain WiFi omnidirectional antenna, comprising a radio frequency coaxial cable, a radio frequency coaxial cable access point, an antenna PCB substrate 1 and an antenna radiation unit located on the surface of the substrate, the antenna PCB substrate 1 is a rectangular substrate, and the substrate The antenna components in include a convex ground 2, a radio frequency coaxial cable access point, and a radiation unit. The radiation unit includes a first arm dipole radiation unit 41 and a second arm dipole radiation unit 6. A serpentine structure is used between the two radiation units. The lines 5 are connected to each other; the feed point 3 is also connected to the radiating unit; the radiating unit 41 of the first arm oscillator and the radiating unit 6 of the second arm are connected to each other by a serpentine line 5; The point and the feeding point, that is, the first arm oscillator radiation unit 41 and the second arm oscill...

Embodiment 2

[0031] The overall composition of the broadband high-gain WiFi omni-directional antenna is the same as that of Embodiment 1. In the present invention, the loading unit 7 is composed of a rectangular copper sheet. The gap between the loading unit 7 and the top of the antenna is 0.2mm, and the size of the loading unit 7 is 1mm*3mm. .

[0032] The present invention adopts the technical scheme of loading a metal patch on the top of the antenna, that is, the loading unit 7. On the basis of increasing the gain of the antenna, it can effectively suppress the influence of the deflection angle of the pattern of the series-fed antenna. The gap distance and the size of the top loading unit 7 are adjusted according to actual needs. If the deflection angle is too large, adjust it by adjusting the size or according to the size of the antenna. In this example, the gap distance between the loading unit 7 and the top of the antenna is 0.2mm, and the size of the loading unit 7 is 1mm*3mm. The ...

Embodiment 3

[0034] The overall composition of the broadband high-gain WiFi omnidirectional antenna is the same as that of Embodiment 1-2. The convex ground 2 of the present invention is composed of two rectangular blocks. The size of the first rectangular block 21 is 2.5mm*2mm, and the second The size of the rectangular blocks 22 is 6.5mm*8mm; they are all arranged along the axis of the substrate. The actual measurement proves that under the structure size, the convex ground realizes good impedance matching.

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Abstract

The invention discloses a wide-band and high-gain WiFi (Wireless Fidelity) omnidirectional antenna, and mainly solves the problems of narrow band width, low gain, complex structure and poor omnidirectivity of the existing WiFi antennae. According to the wide-band and high-gain WiFi omnidirectional antenna disclosed by the invention, a PCB (Printed Circuit Board) substrate is designed that a copper foil is coated on each of an upper surface and a lower surface of the substrate; namely, copper foils which are provided with completely the same wiring are arranged on the upper surface and the lower surface of the substrate as irradiating bodies, and are provided with separate raised spots; a progressive matching segment is present between a feeding point and a first arm radiation unit; radiation units on the upper surface and the lower surface of the substrate are respectively connected with the raised spots by means of metallized through holes; and a loading unit is arranged at the top end of the antenna. According to the wide-band and high-gain WiFi omnidirectional antenna disclosed by the invention, the band width of the antenna can be widened effectively, without increasing size of the antenna, gain is increased and an deflection angle of a directional diagram is inhibited, a small-size WiFi antenna with high gain, wide frequency band, low cost and excellent omnidirectivity is realized on a F4B substrate; and the wide-band and high-gain WiFi omnidirectional antenna has the advantages of simple feeding manner, compact structure, easiness for processing and a wider application scope, and can be used for a 5G Hz WiFi frequency band communication system.

Description

technical field [0001] The invention belongs to the technical field of wireless communication, and in particular relates to a WiFi antenna, in particular to a broadband, high-gain and omnidirectional WiFi antenna, which is a high-gain omnidirectional small antenna applied to the 5GHz frequency band. Background technique [0002] With the development of wireless communication technology, the popularity of using WiFi network is getting higher and higher, and with the rapid development and widespread popularization of smart phones, tablet computers and various smart devices, data transmission and exchange can be realized through wireless WiFi network Such as surfing the Internet, transmitting screens, copying files, etc. have become the basic functional configurations of these smart devices. Compared with wired methods, wireless WiFi has the advantages of convenience, speed and mobility. With the continuous improvement of transmission rate, wireless WiFi has become the standar...

Claims

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Application Information

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IPC IPC(8): H01Q1/38H01Q1/50
CPCH01Q1/38H01Q1/50
Inventor 魏峰廖敦微王馨怡黄丘林史小卫
Owner XIDIAN UNIV
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