Compact metamaterial coplanar waveguide ferrite tunable resonator

Abdalla, Mahmoud A.; Hu, Zhirun

doi:10.1049/iet-map.2015.0515

Cited by 19 publications

(15 citation statements)

References 49 publications

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“…where n is the iteration number, W Parameters a 1 and a 2 , which determine the efficiency of the size reduction, are ratios of middle segment width and indentation width, both with respect to the iteration length (L n ) (Hint: a 1 must be less than a 2 to avoid overlapping of elements from different iteration orders) [13]. A fractal wearable microstrip antenna presented in this paper with a 1 = 0.1, a 2 = 0.4 is deemed the most suitable for operating in assigned different frequency bands for wireless applications at the same time such as GPS, WiFi like Bluetooth, and WiMax as shown in Fig.…”

Section: Antenna Design and Simulationmentioning

confidence: 99%

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Sar Calculations of Novel Wearable Fractal Antenna on Metamaterial Cell for Search and Rescue Applications

Ahmed¹,

Ahmed²,

Shaalan³

2017

PIER M

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Abstract-In this paper, a novel multiband wearable fractal antenna suitable for GPS, WiMax and WiFi (Bluetooth) applications is presented. This antenna is designed to operate at four resonance frequencies are 1.57, 2.7, 3.4 and 5.3 GHz. The proposed wearable antenna may be attached to human body, so the specific absorption ratio (SAR) must be calculated. Therefore, another design to reduce SAR value with a spiral metamaterial meandered in the ground plane is introduced. In addition, a wearable fractal antenna system integrated on a life jacket is also presented.

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Section: Antenna Design and Simulationmentioning

confidence: 99%

“…More details about the MTMs structure are given in [12] and [13]. Figure 1 illustrates the geometry of the wearable fractal microstrip antenna.…”

Section: Introductionmentioning

confidence: 99%

Sar Calculations of Novel Wearable Fractal Antenna on Metamaterial Cell for Search and Rescue Applications

Ahmed¹,

Ahmed²,

Shaalan³

2017

PIER M

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“…Over the ferrite CRLH TLs, it has proven that coplanar waveguide based devices needs smaller DC magnetic bias compared to microstrip configuration [7] . Examples for these devices include tunable/nonreciprocal couplers, resonators, circulators, phase shifter [13][14][15][16][17][18][19][20][21][22][23][24][25][26] and antennas [27,28] .…”

Section: Introductionmentioning

confidence: 99%

A review on novel magnetic properties of metamaterials CRLH devices : Part 1

Abdalla

2018

Eng. Sci. and Milit. Techno.

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This paper introduces different varieties of novel composite right / left handed metamaterials devices with novel magnetic operation properties. The reported devices are discussed in terms of their theoretical. The reported devices have the advantages of their small size, multi frequency band in addition to broadband operation (≈60 %) compared to their conventional design. Moreover, these devices are designed to illustrate novel magnetic properties such as their tuning and non reciprocity operation capabilities. Theoretical explanations supported by simulation results of presented devices confirmed the operation of a tunable and nonreciprocal coupler and tunable transformer. The novelty and advantage of the reported devices are their combined properties of compactness and nonreciprocity. Furthermore the devices require very low external DC magnetic bias due to its much lower demagnetization compared to the microstrip configuration. Accordingly, the devices can be applied in many RF front end novel applications such as circulators and isolators.

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“…It has been shown in that two coupled CRLH transmission lines can have very high backward coupling that can reach 0 dB [13]. Thanks to these properties, compact microwave resonators [14] filters [15] - [17] and couplers [18] are designed.…”

Section: Introductionmentioning

confidence: 99%

Coupled CRLH transmission lines for compact and high selective bandpass filters

Ibrahim

Abdalla

Budimir

2017

Microw. Opt. Technol. Lett.

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In case of abuse or copyright appearing without permission e-mail repository@westminster.ac.uk > REPLACE THIS LINE WITH YOUR PAPER IDENTIFICATION NUMBER (DOUBLE-CLICK HERE TO EDIT) < 1  Abstract-A compact size and high selective bandpass filter is presented in this paper. The filter is designed to serve at 3.5 GHz with two transmission zeros at 3.35 GHz and 3.85 GHz. The filter is designed as two gap capacitor coupled to coupled composite right left handed transmission lines. The coupled lines were designed to demonstrate a zeroth order phase at 3.5 GHz. Also, the transmission zeros were achieved as a consequence of the electrical / magnetic couplings between the two coupled transmission lines. The employed cell, filter design equations are emphasized. The filter S-parameters were extracted based on the circuit model, full wave simulation and experimental measurements. A good agreement between modeled, simulated and measured results is achieved. The measured centre frequency of the bandpass filter is 3.55 GHz and 100 MHz bandwidth which is suitable for WiMAX applications. Also, the filter has low measured insertion loss which does not exceed 1 dB within passband. Finally, the filter has advantageous of compactness (size is only 20 × 18 mm 2 ) which is only 50% compared to conventional non-selective one stage coupled line filter.

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Compact metamaterial coplanar waveguide ferrite tunable resonator

Cited by 19 publications

References 49 publications

Sar Calculations of Novel Wearable Fractal Antenna on Metamaterial Cell for Search and Rescue Applications

Sar Calculations of Novel Wearable Fractal Antenna on Metamaterial Cell for Search and Rescue Applications

A review on novel magnetic properties of metamaterials CRLH devices : Part 1

Coupled CRLH transmission lines for compact and high selective bandpass filters

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