LOW PROFILE SLOT LOADED RECTANGULAR UNIPOLAR MICROSTRIP ANTENNA WITH THREE BAND-NOTCHED PROPERTY AND UWB OPERATION
A low profile slot loaded rectangular unipolar microstrip antenna is proposed for three band-notched property to eliminate GPS and WLAN interference signals in UWB operation. The antenna has a simple structure consisting of a wide rectangular slot loaded on the centre axis of the radiating patch to obtain triple band notched property in the frequency range of 1.30 to 4.69, 4.76 to 7.15 and 10.09 to 10.33 GHz which cover Global Position System (GPS) and Wireless Local Area Network (WLAN) interference in UWB operation. The proposed antenna is simple in structure and use low cost substrate material. The antenna operates between 1 to 16 GHz and gives ominidirectional radiation characteristics with peak gain of 8.62 dB and maximum virtual size reduction of 57.66 %. The proposed antenna may find application in microwave communication systems.