NDLI: Wearable Vivaldi UWB planar antenna for in-body communication

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Wearable Vivaldi UWB planar antenna for in-body communication

Content Provider	ACM Digital Library
Author	Hahnel, Ronny Wang, Qiong Plettemeier, Dirk Zhang, Hui
Abstract	This paper proposes a planar Vivaldi antenna design in ultra wideband (UWB) for medical wireless capsule endoscope applications, in which it acts as the on-body receiver antenna. The proposed antenna connects two opposite Vivaldi variants on one side of the substrate and is fed by a radial stub microstrip on the other side. An additional metallic reflector, added at the Vivaldi side with a certain spacing distance, effectively converts two opposite end-fire radiations from two opposite Vivaldi elements to one broadside radiation. The resulting planar Vivaldi antenna structure then has the maximum radiation normal to the Vivaldi plane so that the receiver antenna can be parallel to the body, which provides possibility for a compact planar belt implementation. On-body measurement further verifies the impedance matching of the proposed Vivaldi antenna. Diversity reception configuration and performance evaluation including space diversity and polarization diversity have been carried out based on the proposed Vivaldi element as well as an optimized linear polarized omnidirectional capsule antenna. A fully-optimized receiver antenna belt can be expected by combining both the space and polarization diversities.
Starting Page	1
Ending Page	5
Page Count	5
File Format	PDF
ISBN	9781450309134
DOI	10.1145/2093698.2093831
Language	English
Publisher	Association for Computing Machinery (ACM)
Publisher Date	2011-10-26
Publisher Place	New York
Access Restriction	Subscribed
Subject Keyword	Polarization diversity Ultra wideband Diversity reception Space diversity Capsule endoscope Wearable antenna Biomedical communication Implanted antenna Vivaldi antenna
Content Type	Text
Resource Type	Article

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