NDLI: Miniaturised wideband ingestible antenna for wireless capsule endoscopy

Content Provider	IET Digital Library
Author	Biswas, Balaka Karmakar, Ayan Chandra, Vikash
Abstract	This study demonstrates the development of an electrically small wideband antenna on silicon substrate targeting wireless capsule endoscopy application. Operating frequency is chosen as 915 MHz. Proposed antenna exhibits a wide frequency bandwidth of 300 MHz (750–1050 MHz) experimentally for a very compact size of 0.021 λ0 × 0.021 λ0 mm2. To simulate the realistic human body environment, ‘male Torso’ model has been considered surrounding this miniaturised antenna. Different tissue properties have been considered during simulation by altering the electrical properties of the human phantom. For the practical experiment, ‘colon’ tissue has been considered and fabricated prototype antenna is tested in this liquid. Further to study the bio-compatibility, specific absorption rate of the antenna is evaluated. Theoretically, the whole antenna assembly along with the phantom is modelled and corresponding link budget calculation is also accomplished to estimate carrier to noise (C/N 0) ratio. Link margin coming out from this study indicates the suitability of the proposed antenna in biomedical applications. Orientation of the capsule in the gastrointestinal tract, effect of capsule material and the effect of capsule's in-side electronics upon antenna performance have been studied in this work. Experimentation reveals very promising results, which closely resembles with the predicted simulated values.
Starting Page	293
Ending Page	301
Page Count	9
ISSN	17518725
Volume Number	14
e-ISSN	17518733
Issue Number	Issue 4, Mar (2020)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-map/14/4
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-map.2019.0439
Journal	IET Microwaves, Antennas & Propagation
Publisher Date	2019-12-17
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Band-pass Filter Band-stop Filter Bandstop–BP–BS Topology BP Section BS Section Compact Customisable BS–BP–BS Cascaded Filter Lumped Capacitor Lumped Parameter Network Notch Frequency Passband Response Passive Filter Passive Network PCB Material Plated-through Vias Printed Circuit Resonant Frequency Resonator Filter Single-layer PCB SIW Coax Filter SIW Coax Cavities SIW Coax Resonator SIW Vias Standard Printed Circuit Board Material Substrate Integrated Waveguide Substrate Integrated Waveguide Coax Resonator Transmission Zero Waveguide And Microwave Transmission Line Waveguide And Microwave Transmission Line Component Waveguide Filter
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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