A novel printed version of the classic volcano smoke antenna is presented and investigated in this article. The effects of some important parameters on the VSWRof the proposed antenna have been investigated in the design. The measured bandwidth of VSWR<2 is from 1.80 to 14.35 GHz, which covers all UWB (3.1- 10.6 GHz) and 2.4 GHz WLAN (2.4-2.4835 GHz) bands. Moreover, the antenna features near omnidirectional characteristics in the operation range and good radiation efficiency. A gain variation from 2.04 to 7.02 dBi (2-13 GHz) is obtained.
2. Taniguchi, T. and T. Kobayashi, "An omnidirectional and low-VSWR antenna for ultra-wideband wireless systems," IEEE Radio and Wireless Conference, 145-148, 2002.
3. Taniguchi, T. and T. Kobayashi, "An omnidirectional and low-VSWR antenna for the FCC-approved UWB frequency band," IEEE International Symposium on Antennas and Propagation Digest, Vol. 3, 460-463, Columbus, Ohio, June 22–27, 2003.
4. Paulsen, L., J. B. West, W. F. Perger, and J. Kraus, "Recent investigations on the volcano smoke antenna," IEEE Intemational Symposium on Antennas and Propagation Digest, Vol. 3, 845-848, Columbus, Ohio, June 22–27, 2003.
5. Ghosh, D., A. De, M. C. Taylor, T. K. Sarkar, M. C. Wicks, and E. L. Mokole, "Transmission and reception by ultra-wideband (UWB) antennas," IEEE Antennas and Propagation Magazine, Vol. 48, 67-99, 2006.
6. Liang, J., L. Guo, C. C. Chiau, and X. Chen, "CPW-fed circular disc monopole antenna for UWB applications," IEEE Antenna Technology:Small Antennas and Novel Metamaterials, 505-508, 2005.
7. Liang, J., C. Chiau, X. Chen, and C. G. Parini, "CPW-fed circular ring monopole antenna," 2005 IEEE AP-S International Symposium on Antennas and Propagation, 500-503, Washington, DC, USA, 2005.
8. Ding, M., R. Jin, J. Geng, and Q. Wu, "Design of a CPW-fed ultrawideband fractal antenna," Microwave Opt. Technol. Lett., Vol. 49, 173-176, 2007.