Wideband Low Loss Magnetoelectric Dipole Antenna for 5G Wireless Network With Gain Enhancement Using Meta Lens and Gap Waveguide Technology Feeding
In this paper, a wideband magnetoelectric (ME) dipole antenna excited by a slot coupled to a fork shaped printed ridge gap waveguide is proposed. To enhance the antenna gain, a meta lens consists of three layers of split ring resonators (SRRs) are integrated horizontally in front of the ME dipole antenna. Each slab contains a 3x7 array of SRR unit cells. The matching bandwidth is improved as a secondary effect of the lens. A 1 x 4 array is designed to provide more gain by adjusting the lens between the edge elements of the four element array. The antenna is fabricated and tested. The measured results show that 10 dB S11 is obtained between 26.5 and 38.3 GHz. The measure realized gain is better than 15 dBi over the frequency range of 28 38 GHz. A 90% radiation efficiency at 30 GHz is achieved.
IEEE Transactions on Antennas and Propagation