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Photo strip-gap ceramics Kontol fractal micro-strip antenna for radio frequency identification system

A radio frequency identification system, Cantor fractal technology, applied in the direction of antenna, resonant antenna, radiation element structure, etc., to achieve the effect of large bandwidth, simple structure and small size

Inactive Publication Date: 2009-09-16
XIAMEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there is no report on the technology that combines the Cantor fractal microstrip antenna, ceramic substrate material, and photonic bandgap structure and applies it to the RFID system in the 2.4-2.4835GHz working frequency band.

Method used

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  • Photo strip-gap ceramics Kontol fractal micro-strip antenna for radio frequency identification system
  • Photo strip-gap ceramics Kontol fractal micro-strip antenna for radio frequency identification system
  • Photo strip-gap ceramics Kontol fractal micro-strip antenna for radio frequency identification system

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Embodiment Construction

[0018] The present invention will be further described below in conjunction with embodiment and accompanying drawing.

[0019] see figure 1 and 2 , the present invention is provided with double-sided silver-plated ceramic substrate 1, both sides of the ceramic substrate 1 are provided with a silver-plated layer, one side of the ceramic substrate silver-plated layer is a second-order Cantor fractal antenna radiation patch 2, the other of the ceramic substrate 1 One side of the silver-plated layer is the antenna ground layer, and a rectangular hole array photonic bandgap structure is etched on the antenna ground layer. The rectangular hole array photonic bandgap structure consists of nine square holes 3 in three rows and three columns. The relative permittivity of the ceramic substrate is 9.

[0020] The ceramic substrate is square, and the size of the ceramic substrate is 20mm±1mm in side length and 1.0mm±0.05mm in thickness.

[0021] The second-order Cantor fractal antenna ...

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Abstract

The invention provides a photo strip-gap ceramics Kontol fractal micro-strip antenna for radio frequency identification system, relates to a micro-strip antenna. The photo strip-gap ceramics Kontol fractal micro-strip antenna for radio frequency identification system has small size, large bandwidth, lower return loss and omnidirectional radiation feature. The micro-strip antenna comprises a ceramic wafer and silver coatings are set on the two surfaces of the ceramic wafer, wherein one silver coating is Kontol fractal wireless radiation patch and another silver coating is rectangular-hole array photo strip-gap structure. The relative dielectric constant of the ceramic wafer is 9+-10%. The shape of the ceramic wafer is rectangle and the side length of the square ceramic wafer is 20mm+-1mm and the length thereof is 1.0mm+-0.05mm. The photo strip-gap ceramics Kontol fractal micro-strip antenna for radio frequency identification system has features of small size, large bandwidth, lower return loss, good omnidirectional radiation feature and easy to integrate. The antenna can satisfy the concrete requirement of a RFID application system to the antenna.

Description

technical field [0001] The invention relates to a microstrip antenna, in particular to a photonic bandgap ceramic Cantor fractal microstrip antenna for a radio frequency identification system. Background technique [0002] Radio Frequency Identification (Radio Frequency Identification, English abbreviation is RFID) is a kind of non-contact automatic identification technology realized by radio frequency communication that began to emerge in the 1990s. RFID tags have the characteristics of small size, large capacity, long life, and reusability. They can support fast reading and writing, non-visual identification, mobile identification, multi-target identification, positioning and long-term tracking management. Combined with other technologies, it can be used in logistics, manufacturing, public information services and other industries to achieve efficient management and operation and reduce costs. With the continuous improvement and maturity of security soft information-relat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q1/38H01Q9/04H01Q13/08
Inventor 游佰强林斌周建华熊兆贤郑建森徐伟明
Owner XIAMEN UNIV
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