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Characterization of Microstrip Patch Antenna for Endoscopy Application

International Journal of Electronics and Communication Engineering
© 2024 by SSRG - IJECE Journal
Volume 11 Issue 8
Year of Publication : 2024
Authors : Juily N. Tarade, Uday Pandit Kho
10.14445/23488549/IJECE-V11I8P121
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How to Cite?

Juily N. Tarade, Uday Pandit Kho, "Characterization of Microstrip Patch Antenna for Endoscopy Application," SSRG International Journal of Electronics and Communication Engineering, vol. 11,  no. 8, pp. 207-217, 2024. Crossref, https://doi.org/10.14445/23488549/IJECE-V11I8P121

Abstract:

Compared to standard endoscopy, wireless capsule endoscopy with non-invasive antennas has gained more attention. Since the transmitting antenna of a Wireless Capsule Endoscope (WCE) is located inside the body as opposed to the receiving antenna, which is located outside of it, designing the transmitting antenna is a difficult challenge. Simultaneously achieving high data rates, small size, omni-directionality, acceptable Specific Absorption Rate (SAR), and large bandwidth in telemetry systems are major hurdles faced by these antennas. This is because many parts of the gastrointestinal tract have different dielectric constants and thicknesses. To overcome these obstacles, antennas must be characterized for WCE. With a modified partial ground plane, the suggested antenna is a small planar slotted microstrip patch antenna. It is a miniature ingestion-capable Ultra-Wide Band (UWB) antenna. The substrate material for the antenna is Rogers TMM 13i. An environment that roughly represents the full human Gastrointestinal (GI) tract, including surrounding tissues, is created using the High Frequency Structure Simulator (HFSS 13.0). The performance of the antenna is evaluated by placing it in the middle of the various GI tracts. The suggested antenna's dimensions are 40 mm3 (10 mm × 10 mm × 0.4 mm) and are a mere 1.26 percent of the capsule's volume. About 4.3 GHz and 6.7 GHz, with a -3 dB bandwidth of about 20.4 MHz and 950 MHz, respectively, are the resonant frequencies. The advantage of having multiple resonant frequencies is that the proposed single antenna can be used for the GI tract, although the dielectric constant varies over the entire GI tract. The existing literature needs different antennas for different GI tracts. In the biological model, the radiation pattern is circularly polarized and omnidirectional. The maximum radiation efficiency of 95.65% has been observed. For the purpose of biocompatibility analysis, the SAR value in the GI tract is also calculated and is well limited.

Keywords:

Circular polarization, Miniaturization, Specific absorption rate, Ultra wide band, Wireless capsule endoscopy.

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