Anti-interference multi-stopband UWB (ultra-wideband) antenna unit aiming at ultra-wideband system

An antenna unit, ultra-wideband technology, applied in the field of antenna and UWB system anti-interference, can solve the problem of few UWB antennas, and achieve the effect of good broadband characteristics, good omnidirectional characteristics, and good suppression function

Inactive Publication Date: 2013-02-06
SOUTHWEST JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although the multi-stopband technology based on the combination of the two technologies has also been studied, there are still few studies on UWB antennas with four or more stopbands.

Method used

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  • Anti-interference multi-stopband UWB (ultra-wideband) antenna unit aiming at ultra-wideband system
  • Anti-interference multi-stopband UWB (ultra-wideband) antenna unit aiming at ultra-wideband system
  • Anti-interference multi-stopband UWB (ultra-wideband) antenna unit aiming at ultra-wideband system

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Embodiment 1

[0026] The antenna unit uses a circular patch with a radius of 7mm as the main radiator, and the ground plate is a square patch with a radius of 26mm×28mm. A circular slot with a radius of 12mm is engraved in the middle of the square patch to form a coplanar waveguide feed, its structure is as figure 1 shown. The dielectric constant of the substrate material is 4.4, the dielectric loss tangent is 0.002, and the thickness of the substrate is 0.4mm. Taking the upper left corner of the grounding plate as a reference point, the center of the slot in the grounding plate is (13mm, 15.5mm), the center of the antenna radiator is (13mm, 30mm), the width of the feeder is 1.8mm, and the distance between the grounding plate and the feeder is The spacing is 0.2mm.

[0027]Different stopband characteristics can be achieved by adding parasitic units in the gap between the antenna radiator and the ground or etching slotted units on the radiator. By changing the positions of these resonance ...

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Abstract

The invention discloses an anti-interference multi-stopband UWB (ultra-wide-band) antenna unit aiming at an ultra-wideband system. A circular slot is carved in the middle of a square patch of an earth plate, a circular patch serving as a main radiator is arranged in the circular slot, at least one C-shaped parasitic Strip unit is arranged in a slot on the radiator, and at least one C-shaped Slot unit and an inverted-U-shaped unit are arranged on the earth plate. A simple, flexible and highly reliable UWB antenna is provided by means of adding a parasitic resonance unit and a slot resonance unit without increasing the size of the antenna and cost, arbitrary stopband and multi-frequency stopband within a whole UWB frequency range are achieved, and the four-stopband UWB antenna aiming at the downlink waveband and the ITU (international telecommunication union) of the WLAN (wireless local area network) technology and the satellite communication technology of the X waveband has excellent wideband characteristics and omnidirectional radiation characteristics.

Description

technical field [0001] The invention mainly relates to the anti-jamming field of antenna and UWB system, especially for the UWB communication technology in the complex environment where multiple wireless communication technologies coexist. Background technique [0002] In recent years, ultra-wideband (UWB) technology has broad application prospects in short-distance wireless communication due to its characteristics of large bandwidth, high speed, and anti-multipath, and has attracted more and more attention. UWB antenna is a key component of UWB system, and its related research has also become a hot research topic. On the other hand, because the frequency spectrum involved in UWB is in the wide frequency range of 3.1-10.6GHz, many technologies have been applied in this frequency band, such as WLAN technology (5.15-5.35GHZ, 5.75-5.85GHz), X-band satellite For the downlink band (7.25-7.75GHz) and ITU (8.025-8.4GHz) of communication technology, etc., to avoid mutual interferen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q1/38H01Q1/48
Inventor 李晓银闫连山潘炜罗斌
Owner SOUTHWEST JIAOTONG UNIV
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