Near field radio link design in fat phantom for wireless capsule endoscopy application

Kamaruddin, Nur Amalina and Kamardin, Kamilia and Yamada, Yoshihide and Zainudin, Norsiha and Arima, Takuji and Michishita, Naobumi and Takahashi, Masaharu (2022) Near field radio link design in fat phantom for wireless capsule endoscopy application. In: Malaysia-Japan Workshop on Radio Technology, MJWRT 2022.

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Medical devices such as Wireless Capsule Endoscopy (WCE) that need wireless imaging and monitoring, operating at 402 MHz, is considered to be in the near field region due to the distance being shorter than the wavelength. In this paper, the radio link calculation method in the near field region is investigated. Normal Mode Helical Antenna (NMHA) is used as the transmitter antenna which is placed inside of a fat phantom of 11.6 F/m and the receiver antenna at distance 0.1 to 1.0 m apart. For link budget establishment, parameters such as power density, W and receiver antenna effective area, Ae are investigated through electromagnetic simulation. The distance dependency of W is examined and the result of W 1/(distance)2 is obtained. The relation of Ae of the receiver antenna is found to be the size of the cross-section area of the antenna. A radio link equation is formed by employing W, Ae and other propagation loss factors of a medium and is then compared with the power received, PR and S21 obtained from simulation. The agreement between calculated and simulated results shows that this equation can be used in the near field region. © Published under licence by IOP Publishing Ltd.

Item Type: Conference or Workshop Item (Paper)
Funders: Fundamental Research Scheme [Grant No: FRGS/1/2018/TK04/UTM/02/16], Ministry of Higher Education, Malaysia
Uncontrolled Keywords: Budget control; Electromagnetic simulation; Endoscopy; Helical antennas; Medical imaging; Phantoms; Radio links; Link design; Medical Devices; Near field region; Near-field radio; Normal mode helical antennas; Phantoms; Receiver antennas; Wireless capsule endoscopy; Wireless imaging; Wireless monitoring; Receiving antennas
Subjects: T Technology > TA Engineering (General). Civil engineering (General)
Divisions: Faculty of Engineering > Department of Electrical Engineering
Depositing User: Ms. Juhaida Abd Rahim
Date Deposited: 02 Nov 2023 02:23
Last Modified: 02 Nov 2023 02:23

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