The Design of a Finite Ground Plane Cross Semi-elliptic Monopole Antenna for UWB Applications

摘要

A cross semi-elliptic monopole antenna with a finite ground plane is presented. Both impedance and radiation characteristics of this antenna are studied. Experimental results indicate that an impedance bandwidth of 10.15 GHz is achieved at operating frequencies from approximately 1.85 to 12 GHz, which covers the bands of most wireless and ultrawideband (UWB) applications. By cutting four narrow slits on the cross semi-elliptic monopole antenna, a band-rejected (5.24 to 6.04 GHz) UWB antenna can be implemented. Good dipdle-like radiation characteristics of the constructed prototype are also shown in this article. The broad bandwidth and good radiation properties of the proposed design are suitable for UWB applications.