A triple band-notched ultra-wideband (UWB) monopole antenna using a planar electromagnetic bandgap (EBG) design is proposed. The EBG unit cell composed by an Archimedean spiral and inter-digital capacitance demonstrates the notch frequencies. with cells near feed line occupies only 30 × 36 mm2 band-rejection characteristics. three notched bands at 4.2 GHz, 5.2 9.1 GHz can be used in C-band sate...