Ultrawideband band-notched folded strip monopole antenna

作者：Ma Tzyh Ghuang^*; Wu Sung Jung

来源：IEEE Transactions on Antennas and Propagation, 2007, 55(9): 2473-2479.

DOI：10.1109/TAP.2007.904137

• antenna transient analysis
• equivalent circuits
• monopole antennas
• ultrawideband (UWB) antennas

We propose I new band-notched folded strip monopole antenna for ultrawideband applications. This Antenna is composed of a forked-shape radiator and a 50 Omega microstrip line. To achieve band-rejected filtering property at the WLAN bands, the forked-shape strips are folded back and result in a pair of coupled lines on the radiator. The length and gap width of the coupled lines primarily determine the notched frequency of the antenna. Based on the band-notched resonance, an equivalent circuit model is proposed for the antenna and the calculated antenna input admittance agrees with the full-wave simulation data. With the help of the dimensionless normalized antenna transfer function, the radiation characteristics are investigated thoroughly. The transmission responses of a transceiving antenna system and their corresponding transient analysis are discussed at the end of this paper.

• 出版日期2007-9