A Tri-Band I slotted rectangular patch microstrip antenna is presented in this paper .The antenna resonates at1.43 GHz, 5.16 GHz and 7.60 GHz frequencies. The antenna is fed with coaxial feed giving band widths of 10.52%, 7.20% & 30.83% for VSWR values less than 1.14.Theproposed antenna can be used for WLAN (Wireless Local Area Network) applications.

A novel ultra-broadband printed monopole antenna with 10 dB return loss bandwidth from 2.1-21.5GHz is proposed. This printed monopole antenna is constructed using cross-slotted modified circular patch with etched ground plane. This UWB printed monopole antenna is microstrip-fed with a triangular tapered input line for broadband matching.

A wideband slotted circularly polarized (CP) patch antenna is introduced for 5–6-GHz WLAN applications. A small 14.6 14.6 mm square patch on Duroid 5880 substrate can provide a returnloss bandwidth of 11% and an axial-ratio bandwidth of 8% with a single feed. A possible reconfigurable design achievable using PIN diode or MEMS switches capable of left-hand or right-hand circular polarization is ...

A single layer, single feed compact slotted patch antenna is thoroughly simulated in this paper. Resonant f requency has been reduced drastically by cutting three equal slots which are same hexagonal structure at the upper right, upper left and lower left corner from the conventional microstrip patch antenna. It is shown that the simulated results are in acceptable agreement. More importantly, ...