Journal of microwave engineering & technologies (vol1, issue2) by STM Journals Publication

eISSN: 2349 - 9001

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Microwave Engineering & Technologies May - August 2014 (JoMET)

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Journal of Microwave Engineering & Technologies eISSN: 2349-9001 Focus and Scope Covers ? Microwave, Millimeter-Wave, and Terahertz Technologies ? Microwave Antennas and Devices ? Microwave photonics ? Infrared and laser technologies ? Band gap materials ? Electromagnetic field

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Dr. Rajiv Prakash School of Materials Science and Technology, Institute of Technology, Banaras Hindu University, Varanasi, India.

Prof. S. Ramaprabhu Alternative Energy Technology Laboratory, Department of Physics, Indian Institute of Technology, Chennai, India.

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Dr. Baldev Raj

Prof. Bankim Chandra Ray

Chairman, National Institute of Technology Puducherry, India. Former Director, Indira Gandhi Centre for Atomic Research, India.

Professor and Head, Department of Metallurgical and Materials Engineering National Institute of Technology, Rourkela, India.

Dr. Hardev Singh Virk Professor Emeritus, Eternal University, Baru Sahib, India.

Dr. Baskar Kaliyamoorthy Associate Professor, Department of Civil Engineering National Institute of Technology Trichy, India.

Prof. D. N. Rao Professor, Department of Biochemistry, AIIMS, New Delhi, India.

Prof. Jugal Kishore Professor, Department of Community Medicine, Maulana Azad Medical College, New Delhi, India.

Dr. Ashish Runthala

Dr. Pankaj Poddar

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Dr. Nandini Chatterjee Singh Associate Professor, National Brain Research Centre, Manesar, India.

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Dr. Priyavrat Thareja

Dr. Rakesh Kumar

Head, Materials and Metallurgical Engineering Department, PEC University of Technology, Chandigarh, India.

Assistant Professor, Department of Applied Chemistry, BIT Mesra, Patna, India.

Dr. Shankargouda Patil

Dr. Shrikant Balkisan Dhoot

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Prof. Subash Chandra Mishra

Prof. Sundara Ramaprabhu

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Bratin Ghosh, Associate Professor Department of Electronics and Electrical Communication Engineering, Indian Institute of Technology, Kharagpur, India.

Rajib Kar Assistant Professor, Department of Electronics & Communication Engineering, NIT Durgapur, West Bengal, India.

Ravibabu Mulaveesala Assistant Professor, Department of Electrical Engineering, Indian Institute of Technology Ropar, India.

Rowdra Ghatak Microwave and Antenna Research Laboratory, Electronics and Communication Department National Institute of Technology Durgapur.

Sanjay Kumar Soni Associate Professor, ECE department Delhi Technological University, India.

Sanjeev Kumar Raghuwanshi Assistant Professor, Department of Electronics Engineering, Indian School of Mines Dhanbad, India.

Santanu Kumar Behera Associate Professor, Department of Electronics & Communication Engineering National Institute of Technology Rourlela, India.

Vinod Kumar Singh Associate Professor, Electrical Engineering S.R.G.I. Jhansi, India.

Director's Desk

STM JOURNALS

I take the privilege to present the print version for the [Volume 1 Issue (2)] of Journal of Microwave Engineering and Technologies. The intension of JoMET is to create an atmosphere that stimulates creativeness, research and growth in the area of Microwave Engineering and Technologies. The development and growth of the mankind is the consequence of brilliant Research done by eminent Scientists and Engineers in every field. JoMET provides an outlet for Research findings and reviews in areas of Microwave Engineering and Technologies found to be relevant for National and International recent developments & research initiative. The aim and scope of the Journal is to provide an academic medium and an important reference for the advancement and dissemination of Research results that support high level learning, teaching and research in the domain of Microwave Engineering and Technologies. Finally, I would like to thank Authors for their continued support and invaluable contributions and suggestions in the form of authoring. I express my sincere gratitude and thanks to our Editorial/ Reviewer board for write ups/ reviewing and providing constructive comments for the advancement of the journals. With regards to their due continuous support and co-operation, we have been able to publish quality Research/Reviews findings for our customers base. I hope you will enjoy reading this issue and we welcome your feedback on any aspect of the Journal.

Dr. Archana Mehrotra Director STM Journals

Journal of Microwave Engineering & Technologies

Contents

1. Design and Performance Improvement of Wearable Antenna Zakir Ali, Vinod Kumar Singh, Ashutosh Kumar Singh

2. Triple Band PIFA Antenna Using The DGS Method Atul Nogia, P. K. Singhal

3. Rectangular Patch Monopole Antenna with Different Shaped Multiple Slots for Triple Band Frequency Applications Umang Supekar, P.K. Singhal

Journal of Microwave Engineering & Technologies ISSN: 2349-9001 (online) Volume 1, Issue 2 www.stmjournals.com

Design and Performance Improvement of Wearable Antenna Zakir Ali1, Vinod Kumar Singh2*, Ashutosh Kumar Singh3 1

I.E.T. Bundelkhand University, Jhansi, India 2 S.R.Group of Institutions, Jhansi, India 3 I. I.I.T., Allahabad, India

Abstract In this paper, a novel structure of wearable antenna using clothing materials, suitable for wearable application has been presented. The substrate of the designed antenna was made of textile material, while radiating element and ground plane are made out of copper tape. To design a novel wearable flexible antenna which has high gain, efficiency, good return loss. Improvement in the design is done by increasing the electrical length and area without increasing the size of the antenna. The simulations were carried out using CST Microwave Studio software and the comparison of measured and simulated results of proposed antenna have been studied. Measured and simulated results are in excellent agreement.

Keywords: Antenna, textile materials, wearable, CST microwave

Journal of Microwave Engineering & Technologies ISSN: 2349-9001 (online) Volume 1, Issue 2 www.stmjournals.com

Triple Band PIFA Antenna Using The DGS Method Atul Nogia*, P. K. Singhal Department of Electronics Engineering, Madhav Institute of Technology and Science, Gwalior, M.P., India Abstract In this paper, a new design of a triple band Planner Inverted â&#x20AC;&#x201C;F Antenna (PIFA) with DGS, for mobile and wireless communication systems is presented. The PIFA antenna consists of ground plate, patch antenna, feeding port and shorting plate connected to the ground plate. The designed antenna has been simulated with the help of the CST (computer Simulation Technology) software microwave studio 2010. The simulated results calculated for the resonant frequency, directivity, return loss, radiation pattern and gain are obtainable and discussed.

Keywords: PIFA antenna, triple band antenna, return Loss, defected ground structure

Journal of Microwave Engineering & Technologies ISSN: 2349-9001 (online) Volume 1, Issue 2 www.stmjournals.com

Rectangular Patch Monopole Antenna with Different Shaped Multiple Slots for Triple Band Frequency Applications Umang Supekar*, P.K. Singhal Department of Electronics, Madhav Institute of Technology & Science, Gwalior, India Abstract In this paper a rectangular patch microstrip antenna with different shaped multiple slots behaves as a triple band monopole antenna. It is designed for 0.96031–1.0464, 1.3766– 1.5797 and 2.1629–2.3708 GHz frequency bands. A rectangular patch monopole antenna with multiple slots, i.e., hexagonal slot and rectangular slot is fabricated on the glass epoxy (FR4 lossy) of dielectric substrate with relative permittivity (εr) of 4.4, thickness of 1.6 mm, loss tangent of 0.02 with a ground plane, fed with a 50Ω rectangular micro strip feed line. In these antenna three different bands with three return losses measured below –20 dB in which one is below –50 dB within its impedance bandwidth along with omnidirectional radiation pattern. The novelty of this antenna is that no other antenna gives triple bands with minimum return losses in just 0–3 GHz band spectrum. This prototype antenna having an omnidirectional radiation pattern is measured for frequency range of 0–3 GHz. The measured reflection coefficients are far below of –10 dB. The simulated result and experimental results are analyzed and verified after comparison.

Keywords: Rectangular Patch, Hexagonal slot, Rectangular slot, Monopole Antenna, Return Loss, Bandwidth, Gain, Efficiency, CST