A UWB Antenna for Impulse Radio

A UWB antenna, which is adopted from a ground penetrating radar (GPR) antenna, is proposed for impulse radio application. The antenna has dimensioning of 7 cm by 1.5 cm and is based on a modified bow-tie structure. It employs improved resistive loading for transmission of 0.2-ns monocycles with minimal ringing. The antenna radiation efficiency is enhanced by creating discontinuities in the antenna that serve as secondary sources of radiation. Numerical analysis of the antenna was performed using the FDTD method and the method of moments. It has been found that antenna ringing is adequately suppressed after less than 3 times the pulse radiation. This will set the potential limit of the data rate at more than 1 Gbit/s. Furthermore, the antenna shows a relatively flat gain and input impedance in the 3 - 10 GHz frequency range. Within this bandwidth the antenna is omni-directional and has stable radiation pattern

[1]  Seong-Youp Suh,et al.  Multi-broadband monopole disc antennas , 2003, IEEE Antennas and Propagation Society International Symposium. Digest. Held in conjunction with: USNC/CNC/URSI North American Radio Sci. Meeting (Cat. No.03CH37450).

[2]  S.C. Hagness,et al.  Numerical and experimental investigation of an ultrawideband ridged pyramidal horn antenna with curved launching plane for pulse radiation , 2003, IEEE Antennas and Wireless Propagation Letters.

[3]  Chalmers M. Butler,et al.  The equivalent radius of a narrow conducting strip , 1982 .

[4]  Xianming Qing,et al.  Wide-slot antenna for UWB applications , 2003, IEEE Antennas and Propagation Society International Symposium. Digest. Held in conjunction with: USNC/CNC/URSI North American Radio Sci. Meeting (Cat. No.03CH37450).

[5]  L.P. Ligthart,et al.  Compact UWB radiator for short-range GPR applications , 2004, Proceedings of the Tenth International Conference on Grounds Penetrating Radar, 2004. GPR 2004..

[6]  A. Yarovoy,et al.  Ground influence on the input impedance of transient dipole and bow-tie antennas , 2004, IEEE Transactions on Antennas and Propagation.

[7]  Y. Rahmat-Samii,et al.  Tilted inverted triangular pulse antenna for impulse radio applications , 2003, IEEE Antennas and Propagation Society International Symposium. Digest. Held in conjunction with: USNC/CNC/URSI North American Radio Sci. Meeting (Cat. No.03CH37450).

[8]  A. Yarovoy,et al.  RC-loaded bow-tie antenna for improved pulse radiation , 2004, IEEE Transactions on Antennas and Propagation.