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Conformable Patch Antenna Array for Energy Harvesting

Published online by Cambridge University Press:  31 January 2011

Akshat C Patel ,
Miral P Vaghela ,
Hassan Bajwa  and
Prabir K Patra
Akshat C Patel
Affiliation:
akshatkp@bridgeport.edu, University of Bridgeport, Electrical Engineering, Bridgeport, Connecticut, United States
Miral P Vaghela
Affiliation:
mvaghela@bridgeport.edu, University of Bridgeport, Electrical Engineering, Bridgeport, Connecticut, United States
Hassan Bajwa
Affiliation:
hbajwa@bridgeport.edu, University of Bridgeport, Electrical Engineering, Bridgeport, Connecticut, United States
Prabir K Patra
Affiliation:
ppatra@bridgeport.edu, University of Bridgeport, Mechanical Engineering, Bridgeport, Connecticut, United States
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Abstract

Carbon nanotube (CNT) has emerged as potential candidate for replacement of conventional metal patch in antenna application. The principal objective of our research is to develop nanostructured flexible patch antenna array for multi- frequency operation in industrial, scientific and medical (ISM) band. Patch antenna design using CNT on flexible cotton sheets has been simulated with cotton as a substrate and CNT as conductive patch and ground plane. Due to high conformability and conductivity of CNT all antenna parameters like VSWR, return loss, gain and radiation pattern obtained using FEKO EMSS software meet design criteria. Our simulated antenna design shows a return loss less than -10 dB and VSWR less than 2 at 2.06 GHz, 2.38 GHz and 2.49 GHz. We have also simulated a versatile and conformable antenna design where the whole geometry is rolled up like patch array on cylindrical surface. Conformability to curved surfaces and integration with the structure brings about a unique antenna design. An inset fed square patch array is also proposed for RF energy harvesting operating in the 2.45 GHz ISM band that can harvest and store energy from the surrounding environment. Simulation result shows that dc voltage of 0.215 V can be achieved at -6 dbm received energy level at 2.45 GHz IEEE 802.11b band. This would correspond to potential working distance of 10m.

Keywords

ink-jet printingsimulationnanostructure
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 1205: Symposium L – Large-Area Electronics from Carbon Nanotubes, Graphene, and Related Noncarbon Nanostructures , 2009 , 1205-L09-10
Copyright
Copyright © Materials Research Society 2010

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