[Show abstract][Hide abstract] ABSTRACT: A printed ultra-wideband (UWB) antenna operating at the frequency range of 2.9-11.0 GHz is proposed for diversity applications. By adopting two symmetrical P-shaped radiators, the antenna presents wideband impedance matching characteristic. The antenna can achieve good impedance matching and improved isolation by notching a slot at the upper centre portion of the ground plane and inserting a stub in the ground. The simulated and measured results show that the antenna can achieve good isolation. Parametric analysis has been conducted to study the effect of slot width and insertion of stub on the impedance bandwidth and isolation characteristics.
[Show abstract][Hide abstract] ABSTRACT: The design of a compact ultra-wideband printed antenna is presented. By using two partly circulars patch with resonating elements, a bandwidth of more than 185%. The proposed radiator is quasi omni-directional with appreciable gain throughout the band. The performance is demonstrated through measurements and calculations with a commercially available field.
[Show abstract][Hide abstract] ABSTRACT: Two types of ultra-wideband (UWB) antennas with triple band-notches are proposed. The antennas consist of an elliptical patch and split ring slots on the patch, complementary electromagnetic band gap (CEBG) at the both sides of the feed line and ring on the ground. Stable gain and quasi omnidirectional radiation patterns are showed. They can be used in the UWB communication systems.