Dual-band quarter-mode substrate integrated waveguide antenna for 5G applications
In order to achieve dual-broadband coverage in 5G hotspot bands in a small size,a 5G dual-band coverage an-tenna with small-plane size and low profile was proposed.Based on the substrate integrated waveguide(SIW)technology,a quarter-mode substrate integrated waveguide antenna with the advantage of miniaturization is constructed,which can gener-ate four modes(TM22,TM33,TM44,TM55)near two target frequency bands.The mode frequency can be adjusted so that there are 2 working modes in each target band.The introduction of a flat U-shaped metal segment loading structure can add a new mode(all-wavelength mode of metal branches)in the N79 band,thereby further extending the impedance band-width of this band.Simulation results show that the antenna achieves dual-band coverage of N78(3.4～3.6 GHz)and N79(4.4～5.0 GHz)under the conditions of 35 mm×35 mm×2 mm.
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