BROAD-BAND RECTANGULAR MICROSTRIP ANTENNA WITH PAIR OF TOOTHBRUSH-SHAPED SLOTS

A novel broadband design of a probe-fed rectangular microstrip antenna with a pair of toothbrush-shaped slots embedded close to the nonradia ting edges of the patch is presented. The proposed broadband design is achieved by the excitation of two adjacent resonant frequencies of th e TM10 and TMdelta 0 modes (1 < delta < 2), to obtain a wide operating bandwidth. An antenna bandwidth as large as similar to 2.6 times that of a conventional rectangular microstrip antenna has also been obtain ed. Details of the proposed design and experimental results are presen ted.