COMPACT MUSHROOM SHAPED MULTIBAND ANTENNA WITH SLOT LOADED ELLIPTICAL MICRO STRIP AND IMPROVED PERFORMANCE DIVERSITY

摘要

A compact mushroom shape cut multiband antenna with slot loaded elliptical micrOstrip and improved performance diversity. The present invention relates to miniaturized elliptical patch antenna with multi bands. The bands of the present invention are selected from tri, quad, pentaand hexa bands. The multi bands fire obtained by slot loading tchnique and shOrting pins along. 1 with good r ad iatio n ef f icien c y a n d en h a n ce d b an d w id th . T h e p r esen t i n v en t io n i m p r o v es t h e˜ p er f o r m an ce d iv ersity in a single device by switching between high radiation efficiency and enhanced bandwidth. The said miniaturized antenna is usedinr hand held devices to cover morg than one frequency.