Hilbert Curve Fractal Antenna for RFID Application

Murad, Noor Asniza; Esa, Mazlina; Yusoff, Mohd Fairus Mohd; Ali, Siti Hajar Aminah

doi:10.1109/rfm.2006.331065

Cited by 25 publications

(14 citation statements)

References 5 publications

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“…In this part, we will present some examples of using Fractal in order to reduce antenna size, as shown in Figure10, [23] presents a compact antenna based on the Hilbert curve fractal. The basic antenna is designed at 2.4 GHz, one of the frequencies used in RFID applications, it was shown that the antenna size can be reduced up to ten times in the third iteration and the resonant frequency has shifted down by approximately 0.09 GHz from the first iteration.…”

Section: Fractalmentioning

confidence: 99%

Contribution to the miniaturization of antennas: State of the art

Tarbouch¹,

Elamri²,

Terchoune³

2016

TNC

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Nowadays, communications systems have become more mobile and personal, that means materials used must be as smaller as possible. Low weight reduced volume and low cost are some of the characteristics that must be accomplished in modern telecommunication equipment. It is well known that the antenna is one of the most important devices in the radiofrequency (RF) section. This element needs to perform effectively according to the necessities. To achieve low weight, small volume and low cost, the size needs to be reduced, but keeping the main characteristics. The size reduction of antennas can be made by several techniques according to the type of the element. In this study we will present the fundamental limitations of small antennas as a major constraint of antenna miniaturization, then we will discuss major techniques that have been reported in literature to reduce the size of an antenna. Feasibility, features, effects on the miniaturisation of antennas of each technique will be presented and discussed. At the end of this study we will give some examples of real systems that used antennas miniaturization techniques.

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Section: Fractalmentioning

confidence: 99%

Contribution to the miniaturization of antennas: State of the art

Tarbouch¹,

Elamri²,

Terchoune³

2016

TNC

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“…Additionally, this kind of serpentine antennas, such as meander and zig-zag shaped antennas [32], can reduce the capability in antenna size. Initially, the fractal concept in stretchable electronics is presented to merely improve the deformability, by using thin films of hard electronic materials patterned in deterministic fractal motifs and bonded to elastomers [33].…”

Section: Self-similar Design and Fabrication Of Wireless Lc Strain Sementioning

confidence: 99%

Self-similar design for stretchable wireless LC strain sensors

Huang

Dong

Huang

et al. 2015

Sensors and Actuators A: Physical

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a b s t r a c tStretchable sensors provide a foundation for applications that exceed the scope of conventional device technologies due to their unique capacity to integrate with soft materials and curvilinear surfaces. This article presents the implementation and characterization of a large-area stretchable wireless RF strain sensor, operating at around 760 MHz, based on the concept of self-similar design. It has an electrical LC resonant circuit formed by a self-similar inductor coil and a capacitor to facilitate passive wireless sensor. The inductance of the wireless sensor varies with the elongation of the PDMS substrate, so is the resonance frequency of the sensor that is detected using an external coil linked to a vector network analyzer. Finite element modeling was used in combination with experimental verification to demonstrate that the wireless strain sensor with 300 m width can be stretched up to 40%. Self-similar structured coil incorporating variable inductance has been implemented to monitor the strain of artificial skin. Strain response of the stretchable wireless sensor has been characterized by experiments, and demonstrates high strain responsivity about 33.7 MHz/10%, which confirms the feasibility of strain sensing for biomedical and wearable applications.

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“…The geometries were generated in iterative patterns. Provided that outer dimension of h and order of fractal iteration n , the length of each line segment d is given by [15] / 2 1…”

Section: A Fractal Theory and Hilbert Structurementioning

confidence: 99%

A Miniature Antenna for 2.45 GHz RFID Tag

Yu¹,

Huang²,

Zheng³

et al. 2014

JCP

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On the basic of fractal theory and folded technique, a miniature antenna for 2.45 GHz radio frequency identification (RFID) tag applications is designed and analyzed in the present paper. In order to realize the miniaturization of tag antenna, a Hilbert fractal structure is used. Impedance matching between antenna and IC chip is of great importance for improving tag performances. A folded technique is employed to achieve impedance matching flexibly. The value of input impedance of tag antenna can be varied readily only by tuning the high of folded line. The dimensions for the designed tag antenna at 2.45GHz are 23.32mm×7.66mm, and its return loss, bandwidth, and gain are analyzed by HFSS. The detection distance is estimated by Friis transfer theory. Analysis results demonstrate that the tag antenna designed in this paper may satisfy the requirements of RFID tag applications.

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Hilbert Curve Fractal Antenna for RFID Application

Cited by 25 publications

References 5 publications

Contribution to the miniaturization of antennas: State of the art

Contribution to the miniaturization of antennas: State of the art

Self-similar design for stretchable wireless LC strain sensors

A Miniature Antenna for 2.45 GHz RFID Tag

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