A low-profile substrate-integrated stacked magnetoelectric dipole antenna

Abstract

In this letter, a low-profile substrate-integrated magnetoelectric dipole antenna was designed. Three layers of Rogers 5880 substrates stacked in the longitudinal direction. Electric dipole and magnetic dipole were realized by top rectangular patches and middle meandering structure, respectively. Through a surface current plot, it was found that the electric dipole worked by the electromagnetic coupling from the magnetic dipole, and hence the working mechanism was figured out and a low profile was achieved. By fabrication and measurement, the proposed antenna has a bandwidth from 3.08 GHz to 4.07 GHz (27.7%) for |S₁₁| < -10 dB. Boresight gain is 9.045±0.905 dBi. The profile is only 0.06 λ₀ (λ₀ is the center wavelength). Measurement and simulation agree well with each other. Therefore, the proposed design can be used on the planar communication equipment with low-profile demands.