Dual-band, wide square-slot antenna for modern wireless applications

Present day wireless communication systems require to handle huge amount of data and therefore radio resource management is important for dynamic allocation of available spectrum to intended users. Dual/Multi-band antennas are used in cognitive radio receivers for sensing the spectrum. The present work describes the designing of a dual band, wide square-slot antenna. The slot antenna is fed by a modified triangular monopole and operates in two distinct bands in S-band and C-band frequency range. The lower band is ISM band for Bluetooth, whereas the upper band corresponds to sub-6 GHz band and is appropriate for 5G and IoT sub-6 GHz applications. The proposed wide square-slot antenna has a fractional 10-dB impedance bandwidth of 16.75% and 63.4% in the two bands. The antenna has a peak broadside gain of 3.7 dBi.