A Compact UHF Antenna Based on Complementary Fractal Technique

Wang, Feng; Feng, Bin; Fan, Jingmin; Ye, Huisheng

doi:10.1109/access.2017.2756672

Cited by 22 publications

(13 citation statements)

References 21 publications

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“…The differentially fed configuration virtually eliminates the loss caused by matching circuits and baluns, and its symmetrical structure enhances the ability of common-signal ('noise') suppression, the first quantitative evaluation of which is studied in this work. The dual-band operation allows IMDs, compatible with commonly used transceivers, such as Zarlink ZL70102 [29], to operate in two modes, thus saving energy and extending the battery life of IMDs. Finally, to alleviate the effect of surrounding lossy muscles, a layer of the biocompatible film has been coated around the fabricated antenna.…”

Section: Introductionmentioning

confidence: 99%

Novel coated differentially fed dual‐band fractal antenna for implantable medical devices

Fan

Liu

et al. 2019

IET Microwaves, Antennas & Propagation

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A novel differentially fed fractal antenna coated with a layer of a dielectric film and operating at two bands of Medical Implant Communication Services 402–405 MHz and Industrial, Scientific, and Medical 2.4–2.48 GHz, is investigated to enable sufficient data transmission rates, while featuring a ‘mode‐control’ signal to prolong the battery life. The symmetrical fractal technology of Hilbert curve is employed to miniaturise the dimension. To facilitate interfacing with peripheral integrated circuits, differentially feeding is adopted. To demonstrate how common‐mode noises are suppressed, for the first time, a detailed analysis about the noise suppression of the differential configuration with two feedings is presented. A layer of thin film is coated around the proposed antenna to isolate the effect of human tissues and alleviate the electromagnetic coupling with human body. Moreover, to draw a design methodological guideline, the key geometrical parameters are analysed numerically and theoretically. Health safety considerations, radiation performance, and link budgets are also discussed to validate the proposed antenna's applicability in biomedical telemetry.

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Section: Introductionmentioning

confidence: 99%

Novel coated differentially fed dual‐band fractal antenna for implantable medical devices

Fan

Liu

et al. 2019

IET Microwaves, Antennas & Propagation

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“…This phenomenon is got since the length of a fractal can be infinite, and according to this characteristic, the electric length of a radiator is increased if the fractal is employed in it. As a result, the size of the antenna is diminished [9][10][11][12][13] compared to a conventional structure without any fractal iteration. On the other hand, it is important to remark that the use of fractals in antennas is not limited to one kind.…”

Section: Introductionmentioning

confidence: 99%

Inscribed Fibonacci Circle Fractal in a Circular Radiator for Ultra-Wideband Antenna Operation and Size Reduction

Tirado‐Méndez

Martinez-Lara

Jardón‐Aguilar

et al. 2019

International Journal of Antennas and Propagation

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In this article, a Fibonacci circle fractal is inscribed into a circular radiator in order to provide ultra-wideband behavior as well as a 50% size reduction compared to a conventional circular monopole. The third iteration of the Fibonacci series allows the antenna to obtain a steady S11 parameter over the operation bandwidth, going from 2.7 GHz to 14 GHz, an average gain around 1 dB, with a quasi-omnidirectional radiation pattern and a group delay no bigger than 1 ns, suitable for short-pulsed communications.

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“…Wang et al [18] proposed a compact UHF antenna based on complementary fractal technique operating from 0.7 GHz to 4.71 GHz. Hu et al [19] proposed a novel rectangle tree fractal UWB antenna with dual band-notched characteristics operating in 3-11 GHz with two notch bands at 3.3-4.08 GHz and 5.04-6.03 GHz, respectively.…”

Section: Introductionmentioning

confidence: 99%

Design and Analysis of Hetero Triangle Linked Hybrid Web Fractal Antenna for Wide Band Applications

Deepak¹,

Madhav²,

Prabhakar³

et al. 2018

PIER C

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Abstract-Design and analysis of a novel wide-band covering, hetero triangle linked hybrid web fractal antenna is presented in this paper. The hetero triangle linked hybrid web structure has been designed through multiple iterations in the CST MICROWAVE STUDIO electromagnetic simulation tool and has been fabricated on FR4 dielectric of ε r = 4.4 with height of 1.6 mm. The proposed antenna offers a comprehensive bandwidth of 18.055 GHz, covering from 1.945 GHz to 20 GHz. It supports various applications starting from 3G, LTE, ISM, Bluetooth, Wi-Fi, WLAN (2.4-2.48 GHz) and 5.2/5.8 GHz (5.15-5.35 GHz/5.72-5.82 GHz), WiMAX operating in the 2.3/2.5 GHz (2.305-2.36 GHz/2.5-2.69 GHz), 5.5 GHz (5.25-5.85 GHz) and Satellite communication (Ku band: Uplink of 14 GHz and Downlink of 10.9-12.75 GHz). The proposed antenna provides peak realized gain of 7.17 dB with efficiency more than 78% in the operating band. The antenna parameters such as reflection coefficient, gain and radiation patterns are determined through numerical simulation, and good matching is obtained with measured results.

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A Compact UHF Antenna Based on Complementary Fractal Technique

Cited by 22 publications

References 21 publications

Novel coated differentially fed dual‐band fractal antenna for implantable medical devices

Novel coated differentially fed dual‐band fractal antenna for implantable medical devices

Inscribed Fibonacci Circle Fractal in a Circular Radiator for Ultra-Wideband Antenna Operation and Size Reduction

Design and Analysis of Hetero Triangle Linked Hybrid Web Fractal Antenna for Wide Band Applications

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