Ultra-Wideband Planar Gaussian Tapered Rhombic Antenna for Short Pulse Applications

An ultra-wideband planar rhombic antenna with Gaussian tapered profile is proposed for short pulse applications. Compared to a conventional linear rhombic antenna, the proposed antenna has a smooth Gaussian tapered edge, which can diminish the reflected pulse signal and thus can enlarge the bandwidth significantly. The proposed planar Gaussian tapered rhombic antenna was fabricated and its performance both in frequency domain and in time domain was investigated. Good agreements between the simulated and the measured results have been observed. Both of the simulated and the measured results show that the proposed antenna is featured by broad bandwidth, low cross polarization levels, and suitability for short pulse applications.