Ultra wideband antenna based on gradient step structure

An ultra-wideband antenna, step-shaped technology, applied in slot antennas, antenna coupling, resonant antennas, etc., can solve the problems of complex antenna structure and process, local area network system interference, equipment electromagnetic interference, etc., to facilitate mass production, simple and compact structure , the effect of convenient processing

Inactive Publication Date: 2015-06-03
HARBIN FEIYU TECH
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Problems solved by technology

[0003] However, the frequency band occupied by the current ultra-wideband communication has a common part with the wireless local area network, so it is necessary to design an antenna that can reduce the interference to the wireless local area network, and the design of ultra-wideband antennas with notch characteristics has become a current research hotspot
If there is no proper design to suppress harmonic resonance and spurious emission, the antenna will cause electromagnetic interference to nearby equipment, endangering the normal operation of the system itself and adjacent systems, especially causing interference to the currently used LAN system
Adding a filter is the most commonly used method to solve such problems, but it often causes a mismatch between the antenna and the microwave circuit, and even reduces the overall performance of the system. Antenna is one of the commonly used methods to solve this problem, and at the same time solve the problem that the structure and process of the current antenna are relatively complicated

Method used

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  • Ultra wideband antenna based on gradient step structure
  • Ultra wideband antenna based on gradient step structure
  • Ultra wideband antenna based on gradient step structure

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example

[0020] Such as figure 1 As shown, the ultra-wideband antenna based on the gradient stepped structure with notch characteristics consists of: a dielectric substrate (1), a radiation patch unit (2), a U-shaped structure slot (3), and a microstrip transmission line ( 4), ground plane (5). The radiation unit, the microstrip transmission line, and the U-shaped structure groove are all printed on the upper surface of the dielectric substrate, and the ground plane is printed on the back of the dielectric substrate. Specific dimensions: Ws=30mm, Ls=35mm, Wp=15mm, Lp=14.5mm, d 1 =12.5mm, Lg=11.3mm, step1=1.5×12mm 2 , step2=1×9mm 2 , W 1 =3.5mm, h=1.6mm, s=0.5mm, Lt=3mm, Wt=12mm, h1=7.5mm.

[0021] The dielectric substrate is made of polytetrafluoroethylene with a thickness of 1.6 mm and a relative dielectric constant of 2.55.

[0022] The radiating unit has a gradual stepped structure to realize the ultra-wideband characteristic of the antenna.

[0023] The microstrip transmissi...

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Abstract

The invention discloses an ultra wideband antenna based on a gradient step structure. The ultra wideband antenna has band-notched characteristic in the WLAN (wireless local area network) frequency band. The ultra wideband antenna consists of a dielectric substrate (1), a radiation patch unit (2), a U-shaped structural slot (3), a micro-strip transmission line (4) and a grounding surface (5). The radiation unit, the micro-strip transmission line and the U-shaped structural slot are all printed on the upper surface of the dielectric substrate. The ultra wideband antenna based on the gradient step structure has the advantages that the structure is compact, the size is small, and the band-notched frequency can be adjusted by changing the size and position of the U-shaped structural slot, so that the problem of same frequency interference in an ultra wideband communication system is solved.

Description

technical field [0001] The invention relates to an antenna, specifically designs an ultra-wideband antenna based on a gradual stepped structure, and realizes a notch function in a WLAN signal frequency band on the basis of the ultra-wideband antenna. Background technique [0002] With the rapid development of mobile communication, communication systems have higher and higher requirements for antenna bandwidth. Since the U.S. Federal Communications Commission (Federal Communications Commission) allowed the 3.1-10.6GHz frequency band to be used commercially on February 14, 2002, UWB technology has received more attention in academic and commercial fields. At the same time, UWB antennas have also proposed more The high requirements make it more challenging than traditional antenna design, mainly in the following aspects: In addition to having an ultra-wide operating frequency band (generally 3.1GHz-10.6GHz), the antenna must also be able to maintain a compact size and light wei...

Claims

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Application Information

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IPC IPC(8): H01Q9/04H01Q13/10H01Q1/52
Inventor 金佳佳张冰然王姣
Owner HARBIN FEIYU TECH
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