Title :
The helical antenna for the capsule endoscope
Author :
Kwak, Sang Il ; Chang, Kihun ; Yoon, Young Joong
Author_Institution :
Dept. of Electr. & Electron. Eng., Yonsei Univ., Seoul, South Korea
Abstract :
In this paper, a helical antenna for a capsule endoscope is designed. To encase the system in a small capsule module and to obtain omni-directional radiation pattern for detecting the transmitted signal independent of the transmitter positions, and to obtain wide bandwidth, a small sized normal mode helical antenna whose end is connected to the ground is designed. The diameter and the height of the helix are 8 mm and 5.6 mm, respectively. Measured results show that the antenna has 32 MHz bandwidth for VSWR<2, and an omni-directional radiation pattern.
Keywords :
antenna radiation patterns; biomedical telemetry; biosensors; broadband antennas; endoscopes; helical antennas; medical signal detection; microwave antennas; 32 MHz; capsule endoscope; normal mode helical antenna; omni-directional radiation pattern; transmitted signal detection; wide bandwidth antenna; Antenna measurements; Antenna radiation patterns; Bandwidth; Endoscopes; Helical antennas; Radiation detectors; Signal design; Signal detection; Transmitters; Transmitting antennas;
Conference_Titel :
Antennas and Propagation Society International Symposium, 2005 IEEE
Print_ISBN :
0-7803-8883-6
DOI :
10.1109/APS.2005.1552139
