In-band notch broadband antenna applied to wireless local area network (WLAN) frequency band

A wireless local area network, broadband antenna technology, applied to antennas, resonant antennas, antenna grounding devices, etc., can solve problems such as notch width, signal interference, etc., and achieve the effect of reducing gain, realizing ultra-wideband, and increasing bandwidth

Active Publication Date: 2021-10-01
HANGZHOU DIANZI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The antenna is small in size and simple in structure, and can cover the entire frequency band of WLAN, but because its notch is too wide, signals at other frequencies may be interfered

Method used

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  • In-band notch broadband antenna applied to wireless local area network (WLAN) frequency band
  • In-band notch broadband antenna applied to wireless local area network (WLAN) frequency band
  • In-band notch broadband antenna applied to wireless local area network (WLAN) frequency band

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Embodiment Construction

[0031] Below in conjunction with accompanying drawing and specific embodiment, the present invention is described in further detail:

[0032] refer to figure 1 , the present invention provides a notched broadband antenna, such as figure 1 include:

[0033] Dielectric substrate 4;

[0034] The radiation patch 1 is arranged on the upper surface of the dielectric substrate;

[0035] The microstrip feeder 2 is arranged on the upper surface of the dielectric substrate and connected to the radiation patch;

[0036] The metal grounding plate 3 is arranged on the lower surface of the dielectric substrate;

[0037] The length of the microstrip feeder is the same as that of the metal ground plane.

[0038] The top view of the radiation patch 1 and the microstrip feeder 2 on the upper surface of the dielectric substrate of the present invention is as follows figure 2 As shown in (a), the schematic diagram of the structure of the first groove and the radiation branch on the radiati...

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Abstract

The invention discloses an in-band notch broadband antenna applied to a wireless local area network (WLAN) frequency band. The in-band notch broadband antenna comprises a dielectric substrate; a radiation patch arranged on the upper surface of the dielectric substrate; a microstrip feeder line arranged on the upper surface of the dielectric substrate and connected with the radiation patch; and a metal grounding plate arranged on the lower surface of the dielectric substrate, wherein a first groove is formed in the radiation patch, two axisymmetric radiation branches are arranged in the first groove, the two radiation branches are not contacted, each radiation branch comprises a first branch and a second branch perpendicular to the first branch, one end of the first branch is connected with the radiation patch, the other endof the first branch is connected with the second branch, a second groove is etched in the metal grounding plate, and the position of the second groove corresponds to the microstrip feeder line. According to the invention, the peak value of VSWR is regulated and controlled by adjusting the distance d from the bottom edge of the first groove to the feed port, and the peak value position of the VSWR is regulated and controlled by adjusting the distance g between the two radiation branches.

Description

technical field [0001] The invention belongs to the technical field of antennas, relates to the technical field of broadband notch antennas, in particular to an antenna with a notch function. Background technique [0002] In the 1960s, the UltraWideband antenna (UltraWideband) began to appear. At first, it used the impulse response at the nanosecond to microsecond level to describe the instantaneous characteristics of a microwave network, and it could be used for short-distance indoor positioning. In the design of broadband antenna. Today's broadband technology has the advantages of high transmission rate, strong anti-interference ability, strong anti-multipath effect ability, etc., and is widely used in wireless sensors, high-precision positioning, radar and other fields. However, in the wide frequency band, there are other communication frequency bands, which cause interference during the communication process and affect the transmission quality of the signal. [0003] I...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q1/36H01Q1/48H01Q13/08H01Q9/04
CPCH01Q1/36H01Q1/48H01Q13/08H01Q9/0407
Inventor 周涛迟梦娇宋开新石仁刚程知群潘勉董志华李世琦刘国华刘杰高扬华
Owner HANGZHOU DIANZI UNIV
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