Slot Antenna for Ultra-Wideband Automobile Applications at 24 GHz

Abstract

This research article discusses the investigations on the design of an Ultra-Wideband (UWB) antenna and its performance analysis from 20 to 30 GHz frequency range which is suitable for Short Range (SR) RADAR applications. This is designed by incorporating a rectangular slot on rectangular patch and reducing the ground plane size. The antenna characteristics namely return loss, current distribution, E-plane and H-plane far field patterns, gain over frequency, group delay in the operating frequency and radiation efficiency are investigated through simulations. Brief discussion regarding FCC guidelines related to the use of 24 GHz frequency band is provided. The antenna occupies the size of 10 X 10 X 1.6 mm3. Necessary parametric analyses were performed to confirm the finalized dimensions as optimum. The impedance bandwidth characteristics was measured using VNA (Vector Network Analyzer) and the obtained –10 dB bandwidth agrees with the simulated result.