Compact Super Wideband Frequency Diversity Hexagonal Shaped Monopole Antenna With Switchable Rejection Band

To reduce interference from other wireless communications, a compact super wideband frequency diversity hexagonal shaped monopole antenna with switchable rejection band capabilities is proposed. The patch consists of structure an open-ended horizontal slot that divides the into upper and lower parts. overall size proposed 36 mm $\times\,\,36$ notation="LaTeX">$\times\,\,1.6$ on FR-4 substrate material loss tangent notation="LaTeX">$tan\delta$ = 0.02. notch features are controlled by changing length resonator through alternating state two inserted parallel PIN diodes inside slot. part connected to negative terminal biasing circuit in back layer conducting via. positive diode. When both OFF, behaves as covering bandwidth 3.37 GHz 27.71 GHz. ON, there (3.81 – 6.62 GHz) filtered. antenna’s radiation pattern broadsided directional, efficiency observed 92.9% 96% for ON OFF cases, respectively. reflection coefficient ( notation="LaTeX">$S_{11}$ ) at ?3.06 dB 5.38 Hence, well-suited applications communications.