Quarter-elliptical antenna with a complementary ground slot for wideband applications

This paper presents the design of a novel compact, printed antenna with a 6dB return loss performance exceeding the 800MHz - 6GHz frequency bandwidth. This wideband operation is achieved using a planar quarter-elliptical monopole accompanied by a quarter-elliptical slot in a finite ground plane. Computer simulations show that the proposed radiating structure achieves better than 10dB return loss within the GSM, DCS, PCS, UMTS, GPS, 3.5GHz WiMAX and 5GHz WLAN bands. This performance is confirmed by measurements on the manufactured antenna which also show that the 6dB return loss reference is met between 750MHz and 6GHz. Because of its planar format, the designed antenna is suitable for integration in compact portable wireless devices aiming for multi-band support of modern wireless standards.