n. The terahertz is very sensitive to water absorption between 0.04 THz and 0.8 THz, hence, it can easily identify infected tissues as human body has ~60% of water content. THz radiation is considered to be less harmful than X-rays and it also reduces the risk of heating tissue. However, these terahertz imaging technologies are facing some challenges in clinical application because of the lack of THz sources, and the lack of THz waveguides to reduce transmission losses in accessing the tissues. The interdigitated photoconductive antenna can be used as the efficient source to gen- erate the terahertz radiation, and this makes the pulsed terahertz imaging system sim- pler due to its miniaturization and portability. This IPCA is micro and nano-structured which makes the device size small even at high frequencies with high efficiency and less loss. An antenna with high gain at terahertz frequency is required to proceed with further research on terahertz radiation in detecting tumor tissue, monitoring glucose level in patients, and SO forth. Terahertz Antenna in Future Healthcare Informatics REFERENCES Arnone, D. D., Ciesla, C. M., Corchia, A., Egusa, S., Pepper, M., Chamberlain, J. M., Bezant, C., Linfield, E. H., Clothier, R., and Khammo, N. Applications of terahertz (THz) tech- nology to medical imaging. In Terahertz Spectroscopy and Applications II (pp. 209 219), vol. 3828. International Society for Optics and Photonics, 1999. Arnone, D., Ciesla, C., and Pepper, M. Terahertz imaging comes into view. Physics World, 13(4), 35, 2000. Auston, D. H., Cheung, K. P., and Smith, P. R. Picosecond photo conducting Hertzian dipoles. Applied Physics Letters, 45(3), 284-286, 1984. Blaney, T. G. Signal-to-noise ratio and other characteristics of heterodyne radiation receivers. Space Science Reviews, 17(5), 691-702, 1975. Boby, E., Prajapati, J., Rathinasamy, V., Mukherjee, S., and Mondal, S. Parametric Investigation of Interdigitated Photoconductive Antenna for Efficient Terahertz Applications. Arabian Journal for Science and E