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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Sumin Yun Kihyun Kim Sangwook Nam |
| Copyright Year | 2002 |
| Abstract | The capsule endoscopy system has been used to obtain an image from the inside of the human digestive tract. To acquire high-resolution images, a loop antenna with ultrawide bandwidth is proposed. It is part of the outer wall of the capsule, thus decreasing volume and increasing performance, and uses a meandered line for resonance in an electrically small area. The proposed antenna makes maximal use of the capsule's outer surface, enabling the antenna to be larger than inner antennas. The measured result shows that the gain of the proposed antenna is higher than that of inner antennas. Return loss and radiation pattern are investigated through simulation and measurement, showing that the proposed antenna has an ultrawide bandwidth of 260 MHz (from 370 to 630 MHz) for VSWR <; 2 and an omnidirectional radiation pattern. Using identical antenna pairs in the equivalent body phantom fluid, antenna efficiency is measured to 43.7% (-3.6 dB). |
| Sponsorship | IEEE Antennas and Propagation Society |
| Starting Page | 1135 |
| Ending Page | 1138 |
| Page Count | 4 |
| File Size | 668685 |
| File Format | |
| ISSN | 15361225 |
| Volume Number | 9 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2010-01-01 |
| Publisher Place | U.S.A. |
| Access Restriction | One Nation One Subscription (ONOS) |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Antenna measurements Antenna radiation patterns Endoscopes Dipole antennas Batteries wideband Capsule antenna endoscopy system loop antenna meander small antenna |
| Content Type | Text |
| Resource Type | Article |
| Subject | Electrical and Electronic Engineering |
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