Dual Band Antenna Covering Millimeter Wave and Sub-6 GHz Bands for 5G Mobile Applications

The proposed dual-band antenna covering millimeter wave and sub-6 GHz bands is a necktie round shape patch design connected with a meandered radiating patch element at the top front with an H slot shape and a fractional or truncated ground plane at the back to enhance the antenna’s functionality and performance. The antenna is designed using CST microwave studio on a substrate Rogers 3003 with a dimension of 27.8 mm, 14mm, and thickness of 1.52 mm with a dielectric constant of 2.2 and a loss tangent of 0.0009 respectively. The proposed antenna has an ultra-wide bandwidth of 19.65 GHz covering almost all the milli meter wave bands of 23 GHz, 28 GHz, and 38 GHz (from 22.65 – 42.30 GHz) while the sub-6 GHz band has a bandwidth of 962 MHz (3.02 – 3.99 GHz) respectively. The return loss of the antenna is -31.33 dB and -49.72 dB at 3.5 GHz and 28 GHz respectively. However, this antenna is compact and combines two different frequency bands, the large frequency ratio between the millimeter wave band to the sub-6 GHz band is 8.