In this paper, a novel V-shaped slotted single, dual band frequency reconfigurable antenna is presented for upcoming 5G and C-band applications. The antenna operates around 3.9 GHz (5G), around 5.5 GHz Wireless Local Area Networks (WLAN) and 6.37 GHz for C-band applications. For obtaining the reconfigurability in the designed structure a V-shaped slot is etched on hexagonal shape radiating element and a PIN diode is adopted. If the PIN diode is ON state, the proposed radiating structure provides dual band operations in the frequency range of 3.49-4.46 GHz with centre frequency around 3.9 GHz and 5.59-7.59 GHz with centre frequency around 6.37 GHz with a bandwidth of 970 MHz, 2000 MHz respectively, else provides a single band operation in the frequency range of 4.03-7.14 GHz with centre frequency around 5.5 GHz with bandwidth of 3110 MHz. A hexagonal shape radiating patch element is incorporated on FR-4 substrate with overall size of (30 x 28 x 1.6) mm3. A comparative analysis with cutting edge work demonstrates that the presented designed antenna structure has the advantages of compact size, improved bandwidth and gain.
