“…Many related patch antenna designs, due to their light weight, simplicity in design and low manufacturing cost [6][7][8][9][10][11], have been demonstrated recently, such as E-shape patch 32 Yang, Li, and Liu antenna [12][13][14], U-slot antenna [15][16][17], V-shape monopole antenna [18], Planar Inverted-L Antenna [19], M-slot antenna [20], H-shaped antenna [21,22]. And broadband rectangular microstrip antenna with toothbrush-shaped slots has been proposed in the past at frequency 1800 MHz [4,5].…”