scholarly journals Design of compact microstrip patch antenna for WBAN applications at ISM 2.4 GHz

2019 ◽  
Vol 15 (3) ◽  
pp. 1509
Author(s):  
Shahid M Ali ◽  
Varun Jeoti ◽  
Tale Saeidi ◽  
Wong Peng Wen
Keyword(s):  
Patch Antenna ◽  
Specific Absorption Rate ◽  
Ground Plane ◽  
Wireless Body Area Network ◽  
Microstrip Patch Antenna ◽  
Area Network ◽  
Radiation Characteristics ◽  
Microstrip Patch ◽  
Field Radiation ◽  
Good Agreement

This paper introduces the design of compact microstrip patch antenna for wireless body area network (WBAN) applications at ISM 2.4 GHz. The design consists of a radiating patch on one side of the substrate and a ground plane is located on the other side of the substrate. The antenna is fed through an inset transmission line and then loaded by two triangles, and shorting pins on both sides of the radiating patch to lengthen the path for current, as result it reduced the overall size. The dimensions of radiating patch antenna are 62 mm<em>× </em>43 mm <em>× </em>1.67 mm. By locating the proposed antenna On and Off body communication, it can maintain compact and stable far field radiation characteristics and negligible specific absorption rate (SAR). Furthermore, high efficiencies of about 53 % and 46% are obtained during off and on body, which is higher than recent similar works in the literature. The simulated results showed a good agreement with the measured results. Owing to the acceptable results, the proposed design can be a reliable candidate for WBAN applications at ISM band.

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.

scholarly journals Rectangular Zigzag Microstrip Patch Antenna with Swastik Shape DGS for WLAN, C and Ku-Band Applications

2019 ◽  
Vol 8 (9S) ◽  
pp. 280-284
Keyword(s):  
Patch Antenna ◽  
Wireless Local Area Network ◽  
Local Area Network ◽  
Ground Plane ◽  
Microstrip Patch Antenna ◽  
Area Network ◽  
Defected Ground Structure ◽  
Ground Structure ◽  
Microstrip Patch ◽  
Ku Band

A triple band microstrip-fed patch antenna is presented which contains the radiating structure having rectangular zigzag shape patch and an altered ground structure with a swastic shape design. This modified ground plane actually acts as a defected ground structure (DGS). Both the modified ground plane and radiating patch are perfect electric conductors. The patch is imprinted on a substrate named as Epoxy Glass FR-4 having thickness 1.6 mm, relative permittivity 4.4, and loss tangent 0.0024. The designed microstrip patch antenna (MPA) is able to generate three specific operating bands viz. 11.9–13.6 GHz, 5.71–5.82 GHz, 4.5-4.6 GHz with adequate bandwidth of 1.64 GHz, 110 MHz and 100 MHz and corresponding return loss of -32dB, -23dB, -14.3dB respectively covering Wireless Local Area Network (WLAN), C-band and Ku-band applications. A parametric study has been performed for the rectangular slots located in the patch. Proposed MPA is simulated using Computer Simulation Technology Microwave Studio Version 14.0 (CST MWS V14.0). Lastly, the fabrication of the proposed antenna with optimized parameters has been accomplished and measured results for S-parameter magnitude have been discussed

Bandwidth enhancement of a planar monopole microstrip patch antenna

2014 ◽  
Vol 8 (2) ◽  
pp. 237-242 ◽  
Author(s):  
Sudeep Baudha ◽  
Dinesh Kumar Vishwakarma
Keyword(s):  
Patch Antenna ◽  
Return Loss ◽  
Ground Plane ◽  
Microstrip Patch Antenna ◽  
Impedance Bandwidth ◽  
Communication Services ◽  
Bandwidth Enhancement ◽  
Microstrip Patch ◽  
Peak Gain ◽  
Good Agreement

This paper presents a simple broadband planar monopole microstrip patch antenna with curved slot and partial ground plane. The proposed antenna is designed and fabricated on commercially available FR4 material with εr = 4.3 and 0.025 loss tangent. Bandwidth enhancement has been achieved by introducing a curved slot in the patch and optimizing the gap between the patch and the partial ground plane and the gap between the curved slot and the edge of the patch. Simulated peak gain of the proposed antenna is 4.8 dB. The impedance bandwidth (defined by 10 dB return loss) of the proposed antenna is 109% (2–6.8 GHz), which shows bandwidth enhancement of 26% as compared with simple monopole antenna. The antenna is useful for 2.4/5.2/5.8-GHz WLAN bands, 2.5/3.5/5.5-GHz WiMAX bands, and other wireless communication services. Measured results show good agreement with the simulated results. The proposed antenna details are described and measured/simulated results are elaborated.

scholarly journals The Improved Radiations in Planar Microstrip Patch Antenna using Linear Slot Etched Ground Plane

2020 ◽  
Vol 8 (6) ◽  
pp. 123-127
Keyword(s):  
Dielectric Constant ◽  
Resonant Frequency ◽  
Patch Antenna ◽  
Ground Plane ◽  
Dominant Mode ◽  
Microstrip Patch Antenna ◽  
Microstrip Patch ◽  
Rectangular Microstrip Patch Antenna ◽  
Simulation Results ◽  
Good Agreement

Radiations improvement in a probe fed rectangular microstrip patch antenna using linear slot etched ground plane is proposed. Conventional MPA is designed using Glass Epoxy FR4 substrate. Substrate has dielectric constant 4.4 and its thickness 1.6 mm, operated at resonant frequency 3.05 GHz. The proposed method is simple and easy to etch on a substrate. This will suppress cross-polarized (XP) radiation field only without disturbing the dominant mode and co-polarized radiations. The concept has been tested using HFSS tool and verified its results experimentally. The experimental results show a good agreement with the simulation results.

scholarly journals Enhancement in RMPA Parameters by Rhombus Connected With Circle Meta Material Structure Using at 1.9 GHz

2016 ◽  
Vol 4 (1) ◽  
pp. 43-45
Author(s):  
Vijay Dandotiya ◽  
Chetan Pathak
Keyword(s):  
Patch Antenna ◽  
High Frequency ◽  
Return Loss ◽  
Ground Plane ◽  
Microstrip Patch Antenna ◽  
Material Structure ◽  
Radiation Characteristics ◽  
Microstrip Patch ◽  
Left Handed ◽  
Rectangular Microstrip Patch Antenna

Author proposed a new design of meta-material to provide advancement into the factors of the rectangular microstrip patch antenna (RMPA) “Enhancement in RMPA parameters Rhombus Connected With Circle Meta material structure high using at 1.9GHz” As a rectangular microstrip patch antenna is designed at a height of 1.6mm & Left handed Meta material structure is designed at a height of 3.2mm from the ground plane by using CST-MWS software. The resonance frequency 1.9GHz of the designed antenna is using as a high frequency. This paper mainly worked on return loss. The Return loss of the proposed antenna reduced to -31,16dB & bandwidth is increased up to 41.9MHz. This antenna is small size, cheap, compact and easy to fabricate, and achieve good radiation characteristics with higher return loss. In this paper return loss basically defined as system becomes stable with reduced return loss.

scholarly journals Comparison and Performance Evaluation on Microstrip Patch Antenna for WLAN Application

2016 ◽  
Vol 4 (3) ◽  
pp. 80-84
Author(s):  
Meenal Kate ◽  
Anjana Goen
Keyword(s):  
Patch Antenna ◽  
Wireless Local Area Network ◽  
Local Area Network ◽  
Ground Plane ◽  
Local Area ◽  
Microstrip Patch Antenna ◽  
Dual Band ◽  
Area Network ◽  
Microstrip Patch ◽  
And Performance

This paper present a comparative study between two works proposed for microstrip patch antenna dual band operations. The comparison is made between a dual-band planar antenna with a compact radiator for 2.4/5.2/5.8-GHz Wireless Local Area Network (WLAN) applications and a printed circular microstrip patch antenna with a four rectangular shape strip and co planar rectangular ground plane antenna. The comparative analysis between these two antennas consist of following parameters such as dimensions, bandwidth, gain, return loss, directivity etc.

scholarly journals Size Reduction and Gain Enhancement of a Microstrip Antenna using Partially Defected Ground Structure and Circular/Cross Slots

2017 ◽  
Vol 7 (2) ◽  
pp. 894 ◽  
Author(s):  
Nada N. Tawfeeq
Keyword(s):  
Patch Antenna ◽  
Wireless Local Area Network ◽  
Local Area Network ◽  
Ground Plane ◽  
Microstrip Patch Antenna ◽  
Area Network ◽  
Defected Ground Structure ◽  
Ground Structure ◽  
Gain Enhancement ◽  
Microstrip Patch

Microwave engineers have been known to designedly created defects in the shape of carved out patterns on the ground plane of microstrip circuits and transmission lines for a long time, although their implementations to the antennas are comparatively new. The term Defected Ground Structure (DGS), precisely means a single or finite number of defects. At the beginning, DGS was employed underneath printed feed lines to suppress higher harmonics. Then DGS was directly integrated with antennas to improve the radiation characteristics, gain and to suppress mutual coupling between adjacent elements. Since then, the DGS techniques have been explored extensively and have led to many possible applications in the communication industry. The objective of this paper is to design and investigate microstrip patch antenna that operates at 2.4 GHz for Wireless Local Area Network WLAN IEEE 802.11b/g/n, ,Zigbee, Wireless HART, Bluetooth and several proprietary technologies that operate in the 2.4 GHz band. The design of the proposed antenna involves using partially Defected Ground Structure and circular/cross slots and compare it to the traditional microstrip patch antenna.  The results show improvement in both the gain of 3.45 dB and the S11 response of -22.3 dB along with reduction in the overall dimensions of the antenna. As a conclusion, the performance of the antenna has been improved through the incorporation with the DGS and slots structures regarding the S11 response and the gain. The proposed antenna become more compact. Finally, the radiation pattern of proposed antenna has remained directional in spite of adding slots on the ground plane.

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.

Theoretical Analysis of Gap Coupled Microstrip Patch Antenna

2017 ◽  
Vol 7 (2) ◽  
pp. 567
Author(s):  
Akanksha Gupta ◽  
D K Srivastava ◽  
J.P. Saini
Keyword(s):  
Theoretical Analysis ◽  
Resonant Frequency ◽  
Patch Antenna ◽  
Ground Plane ◽  
Microstrip Patch Antenna ◽  
Impedance Bandwidth ◽  
Concept Model ◽  
Microstrip Patch ◽  
Parasitic Patch ◽  
Good Agreement

<p class="Author">When a patch is placed close to the fed patch, get excited due to parasitic coupling between the two elements. This proposed work presents theoretical analysis of rectangular gap coupled microstrip patch antenna (R-GCMSA) using circuit concept model, and the effect of gap(g), feed width (W<sub>f</sub>), and feed length on performance of the impedance bandwidth is also studied, it is observe as the gap between the parasitic element is increased resonant frequency shifted towards the parasitic patch resonant frequency for broadening the impedance bandwidth. The maximum impedance bandwidth for the proposed antenna design is 12.7% in the frequency range of 3.24-3.7GHz measured, with rectangular shape ground plane size 6030m.m<sup>2</sup>.the highest directivity achieved is 4dBi.The proposed design is simple in structure and compact in size, proposed design is simulated on IE3D Microwave simulator, the simulated result is in good agreement with obtained theoretical and measured results.</p>

scholarly journals Design and Fabrication of DGS Microstrip Patch Antenna for S, C & X Band Applications

2019 ◽  
Vol 8 (2) ◽  
pp. 141-144
Keyword(s):  
Patch Antenna ◽  
Return Loss ◽  
Wireless Local Area Network ◽  
Local Area Network ◽  
Ground Plane ◽  
Local Area ◽  
Microstrip Patch Antenna ◽  
Area Network ◽  
Defected Ground Structure ◽  
Microstrip Patch

The design and simulation of defected ground structure microstrip patch antenna for Worldwide Interoperability for Microwave Access (WiMAX) and Wireless Local Area Network (WLAN) applications are additionally testing as the antenna ought to be little in size, light in weight, easy to manufacture, minimal effort, and simplicity of joining in such gadgets. The target of this work is to plan and creation of an antenna which will be appropriate for WiMAX and WLAN applications with improved gain and optimized bandwidth. WiMAX depend on gauges, for example, IEEE 802.16, intended to work between 2-11 GHz and spreads S, C and X microwave recurrence groups. Metropolitan Area Network (MAN) conventions are in the 2.3 GHz, 2.5 GHz, 3.5 GHz and 5.8 GHz ranges. A planar antenna with imperfect ground plane is proposed and manufactured, 3.5/5.5 GHz WiMAX band, 5.2/5.8 GHz WLAN band, 4/6 GHz satellite correspondence, and different remote correspondence applications. This structure canvassed two groups in which it is extending from 3.34-8.72 GHz implies a band of 5.38 GHz with impedance BW 89.22%. The resonating frequencies are 3.92 GHz and 7.88 GHz with return loss - 35.59 dB and - 31.99 dB, VSWR 1.03 and 1.05 and gain 9.46 dB and 0.14 dB respectively. The second band covers 9.22-13.06 GHz implies a band of 3.84 GHz with impedance BW 34.47%. This resounds at 10.58 GHz with return loss - 55.52 dB, VSWR 1.00 and gain is 7.09 dB. The deliberate outcomes are in great concurrence with reproduced consequences of the proposed antenna.

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