Magnetic-Current-Loop Induced Electric Dipole Antenna Based on Substrate Integrated Waveguide Cavity
Chung-Tse Michael Wu, Jun H. Choi, Hanseung Lee, Tatsuo Itoh
IEEE Antennas and Wireless Propagation Letters
Volume: 13, 2014
519 - 522
Annular ring, antenna array, dipole antenna, magnetic current, substrate integrated waveguide
In this letter, a novel dipole antenna based on substrate integrated waveguides (SIW) is presented. The dipole antenna radiates through the equivalent magnetic current loops on the top and bottom annular ring slot that is excited by the fundamental mode of the SIW cavity. Therefore, the proposed dipole possesses a vertical polarization perpendicular to the metallic plane. Moreover, thanks to normal electric field, the proposed dipole is less affected by the ground plane size and surrounding metal. The proposed antenna topology provides a very easy way to realize vertical dipole antenna by just using planar circuits and is promising to be used as a fundamental element to realize antenna arrays.
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