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This paper consist novel compact ultra wide band frequency coplanar waveguide fed coplane monopole antenna which works in application of WLAN.The antenna is optimized with Finite Element Method using CST microwave studio software, in result which provides ultra wide impedance bandwidth. As the simulation results good band operation above the 1.7 GHz which covers all the above frequency from it and able to works on frequency range of L,S,C,X,K,Ku,Ka and WLAN operating band. The Antenna provides all the results performance as Farfield radiation patternVSWR, gain over the entire operating band range have been

In this paper a newly developed patch antenna, designated as the parallel-plate transmission line feeding differentially driven patch antenna is presented. The parallel-plate transmission line will not introduce inductance to the input impedance of a patch antenna, thus the height of the patch can be largely increased.  Measurements show that the 3-dB-gain bandwidth can be obtained to 65% (0.86–1.93 GHz), return loss is -20dB, VSWR is 1.3 and impedance is 51 ohm at resonant frequency of 1.58GHz. The radiation pattern is stable and this antenna is designed for GPS application.