High Gain Printed Ultra Wideband Antenna Concept

Ultra wideband (UWB) communication systems are emerging on the short range communication market covering variety of the application scenarios. Fact that UWB systems are based on utilising wide frequency bands of operation makes specific requirements for antenna solution quite demanding. Antenna dispersion behaviour is critical for the system performance. Printed low cost antennas with the capability to be integrated on the same substrate with the UWB front end are very suitable for different applications. In many specific cases, having asymmetrical data traffic like access point applications, it is highly desired to have high gain printed UWB antenna solution, being able to function as sector antenna with wide azimuth beam width and moderate beam width in elevation. In this paper, high gain UWB printed antenna concept covering complete frequency range from 3-10 GHz is presented. The antenna can be easily integrated with UWB ICs on the same substrate, offering inherently low cost solutions with antenna again in the range of 7-10 dBi. Proposed concept has been verified by simulations and finally confirmed by measurements.