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Abstract
A broadband aperture-coupled asymmetrical fractal tree-shaped microstrip antenna is proposed with the mirror image ground for coupling. A resonant coupling slot in the ground is provided which is the mirror image of the radiating patch. The result shows that there is an increase in the bandwidth of antennas compared to the basic design. The proposed design for multiband application covers YiMAX (i.e. 2.5 GHz to 2.69 GHz) and the entire UWB frequency range (i.e. 3.1 GHz to 10.6 GHz). The proposed antenna is printed using two FR4 substrates with a relative permittivity of 4.4. The thickness of the structure is 1.6 mm and the patch size is 70 × 106 mm. The novelty of the proposed antenna is it is designed using a fractal structure with the modified ground with mirror slot. The asymmetrical structure for the fractal tree using feeding with aperture coupling is used to design the proposed antenna. The proposed antenna is designed using the HFSS software. The fabricated antenna is tested on the Agilent vector network analyzer.
Acknowledgements
The authors acknowledge the Department of Electronics and Telecommunication Engineering, Dr Babasaheb Ambedkar Technological University, Lonere, Maharashtra, India for providing the simulation, fabrication and testing facility in the research laboratory.
Additional information
Notes on contributors
Sanjay Vivekanand Khobragade
Sanjay Vivekanand Khobragade has been working as an assistant professor In Dr Babasaheb Ambedkar Technological University Lonere, Maharashtra, India for the past 20 years. He graduated from Nagpur University in 1996 and post-graduated in electronics engineering from Mumbai University in 2008 and is now pursuing PhD form Dr Babasaheb Ambedkar Technological University Lonere, Maharashtra. He has presented around 90 papers at national and international conferences to his credit. He received Young Scientist Award in URSI 2004 in Pisa Italy, and Consolation Prize for the best paper in ICMARS Jodhpur, 2008 and the Best Technical teacher Award by ISTE sponsored by Maharashtra and Goa in 2010. Corresponding author. Email: [email protected]; [email protected]
Sanjay Laxmikant Nalbalwar
Sanjay Laxmikant Nalbalwar received BE (Computer Science and Engineering) in 1990 and ME (Electronics) in 1995 from SGGS College of Engineering and Technology, Nanded, India. He obtained his PhD from IIT Delhi in 2008. He has around 24 years of teaching experience and is working as a professor and the head of Electronics and Telecommunication Engineering Department at Dr Babasaheb Ambedkar Technological University, Lonere, Maharashtra, India. His area of interests includes multirate signal processing and wavelet, stochastic process modeling. He has presented around 150 papers at national and international conferences. Email: [email protected]; [email protected]
Anil Bapusa Nandgaonkar
Anil Bapusa Nandgaonkar has been working as an associate professor in Dr Babasaheb Ambedkar Technological University Lonere, Maharashtra, India for the past 20 years. He graduated in 1990 and post-graduated in 2000 from Dr Babasaheb Ambedkar Marathwada University, Aurangabad and obtained PhD form Dr Babasaheb Ambedkar Technological University Lonere, Maharashtra. He is a recipient of National Merit scholarship, and his research interests include antenna wave propagation, microwave engineering, EMI/EMC and optical fiber. He has presented around 50 papers at national and international conferences. Email: [email protected]; [email protected]
Abhay Eknath Wagh
Abhay Eknath Wagh has been working as a director in Technical Education, Maharashtra, Mumbai. He obtained PhD in electronics and instrumentation engineering. He has been working in the field of technical education for the past 30 years. He is a recipient of Skotch Gold Award of Excellence, E-Maharashtra’ honour for efforts in e-administration by Directorate of Information Technology, Govt of Maharashtra, and Promising Engineer Award from Institution of engineers etc. He has presented around 35 papers in international/national journals/conferences.Email: [email protected]; [email protected]