scholarly journals Design and Analysis of UWB Microstrip Patch Antenna Loaded With Modified SRR and DGS for WBAN Applications

2021 ◽  
Author(s):  
Sesha Vidhya S ◽  
Rukmani Devi S. ◽  
Shanthi K. G.
Keyword(s):  
Patch Antenna ◽  
Biomedical Applications ◽  
Performance Metrics ◽  
Wireless Body Area Network ◽  
Wide Band ◽  
Split Ring Resonator ◽  
Microstrip Patch Antenna ◽  
Area Network ◽  
Split Ring ◽  
Microstrip Patch

Abstract Wireless Body Area Network (WBAN) is the booming field incorporating the recent wireless sensor networks and miniaturized wearable devices. There are growing appeals for WBANs in medical and non-medical applications due to its flexibility and portability. This paper proposes an Ultra Wide Band (UWB)Microstrip patch antenna loaded with modified Split Ring Resonator (SRR) and Defective Ground Structure (DGS) for WBAN applications. The proposed antenna has a modified SRR structure and DGS at the ground and a patch scratched over the surface of the Arlon substrate with 1.6mm thickness. The structure is partially grounded and also loaded with meta-material to reduce the back-body radiations. The performance metrics of the proposed antenna are analysed and compared with different antenna configurations. The proposed UWB Microstrip patch antenna operating at 5.2GHz yielded a return loss of -21.12dB, VSWR of 1.19, higher efficiency and less Specific Absorption Rate (SAR) making it the best choice for biomedical applications.

scholarly journals 2.45 GHz wearable rectenna array design for microwave energy harvesting

2019 ◽  
Vol 14 (2) ◽  
pp. 677 ◽  
Author(s):  
Syahirah Shawalil ◽  
Khairul Najmy Abdul Rani ◽  
Hasliza A. Rahim
Keyword(s):  
Antenna Array ◽  
Patch Antenna ◽  
Wireless Body Area Network ◽  
Microstrip Patch Antenna ◽  
Circuit Board ◽  
Design System ◽  
Area Network ◽  
Dc Voltage ◽  
Rectifier Circuit ◽  
Microstrip Patch

This paper presents a design of a wearable textile microstrip patch rectifying antenna (rectenna) array operating for wireless body area network (WBAN) at the center frequency, <em>f<sub>c</sub></em> of 2.45 GHz.  Precisely, jeans or denim with the relative permittivity, <sub> </sub>= 1.70 and thickness of 1.00 mm is chosen as a substrate attached to SheildIt Super as a conductive material with the thickness, <em>h</em> of 0.17 mm and conductivity of 6.67  10<sup>5</sup> S/m, respectively. In the first stage, a microstrip patch antenna array layout with the inset fed technique is designed and simulated by using the Keysight Advanced Design System (ADS) software.  In the second stage, a wearable textile microstrip patch antenna array is fabricated, integrated, and hidden inside the jeans fabric.  In the third stage, the rectifier circuit layout on the flame retardant-4    (FR-4) printed circuit board (PCB) with the dielectric constant,  = 4.7, thickness, <em>h</em> = 1.6 mm, and loss tangent, <em>δ</em> = 0.018 that can generate radio frequency-direct current (RF-DC) conversion is designed and simulated using the ADS software  Each simulation result and fabrication measurement shows that the designed antenna array characteristics are suitable for an industrial, scientific, and medical radio (ISM) band by having the reflection coefficient, <em>S</em><sub>11</sub> less than -10 decibel (dB) at the respective resonant frequency, <em>f<sub>r</sub>.</em>  Moreover, through simulation, the output DC voltage for the bridge rectifier circuit is from 132 mV to 5.01 V with the corresponding power conversion efficiency (PCE) between 3.48% and 50.20% whereas for the voltage doubler rectifier, the output DC voltage is from 417 mV to 2.91 V with the corresponding PCE between 34.78% and 53.56%, respectively.

Design and Analysis of Miniaturized Microstrip Patch Antenna with Metamaterials Based on Modified Split-Ring Resonator for UWB Applications

Frequenz ◽  
2016 ◽  
Vol 70 (11-12) ◽  
Author(s):  
D. Khedrouche ◽  
T. Bougoutaia ◽  
A. Hocini
Keyword(s):  
Patch Antenna ◽  
Ring Resonator ◽  
Federal Communication Commission ◽  
Split Ring Resonator ◽  
Microstrip Patch Antenna ◽  
Ultra Wideband ◽  
Band Spectrum ◽  
Split Ring ◽  
Microstrip Patch ◽  
Uwb Applications

AbstractIn this paper, a miniaturized microstrip patch antenna using a negative index metamaterial with modified split-ring resonator (SRR) unit cells is proposed for ultra-wideband (UWB) applications. The new design of metamaterial based microstrip patch antenna has been optimized to provide an improved bandwidth and multiple frequency operations. All the antenna performance parameters are presented in response-graphs. Also it is mentioned that the physical dimensions of the metamaterial based patch antenna are very small, which is convenient to modern communication. A 130 % bandwidth, covering the frequency band of 2.9–13.5 GHz, (for return loss less than or equal –10 dB) is achieved, which allow the antenna to operate in the Federal Communication Commission (FCC) band. In addition, the antenna has a good radiation pattern in the ultra-wide band spectrum, and it is nearly omnidirectional.

Microstrip patch antenna project with split ring resonator periodically arrayed on the substrate

2015 ◽  
Vol 57 (12) ◽  
pp. 2715-2720 ◽  
Author(s):  
José L. da Silva ◽  
Humberto D. de Andrade ◽  
Humberto C. C. Fernandes ◽  
Isaac B. T. da Silva ◽  
Idalmir de S. Q. Júnior ◽  
...  
Keyword(s):  
Patch Antenna ◽  
Ring Resonator ◽  
Split Ring Resonator ◽  
Microstrip Patch Antenna ◽  
Split Ring ◽  
Microstrip Patch

Gain Improvement of Microstrip Patch Antenna Using CLS Split Ring Resonator Metamaterial

Frequenz ◽  
2015 ◽  
Vol 69 (3-4) ◽  
Author(s):  
Pankaj Rameshchandra Katiyar ◽  
Wan Nor Liza Binti Wan Mahadi
Keyword(s):  
Patch Antenna ◽  
Ring Resonator ◽  
Split Ring Resonator ◽  
Microstrip Patch Antenna ◽  
Electromagnetic Energy ◽  
Anechoic Chamber ◽  
Far Field ◽  
Split Ring ◽  
Beam Focusing ◽  
Microstrip Patch

AbstractMetamaterials are artificial materials with negative permittivity and permeability. Metamaterials due to their unique negative parameter are capable of focusing the electromagnetic energy incident upon them. This focusing of electromagnetic energy is used to increase the gain of microstrip patch antenna. A capacitive loaded strip (CLS)-loaded split ring resonator is used to form a multilayer array of metamaterial and used in front of microstrip patch antenna to enhance far-field gain of antenna. An accurate simulation model is created and analyzed using CST. The simulated model is then fabricated and measured in fully anechoic chamber for validation. The far-field gain of regular patch antenna with and without metamaterial is measured in anechoic chamber. The increase in gain by 4 dB is measured at 95 mm from antenna. The beam focusing property is also evident from 3 dB beamwidth of antenna which is reduced to 42.01°.

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