A dual-linearly-polarized, electrically small, low-profile, broadside radiating Huygens dipole antenna is presented that is an advanced combination of electric and magnetic near-field resonant parasitic (NFRP) elements. Its prototype was fabricated and tested. The measured results are in good agreement with their simulated values. At 1.515 GHz the prototype is electrically small (ka = 0.904) and low profile (0.0483λ 0 ). It exhibits high port isolation and a large front-to-back ratio (FTBR).

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... isolation between its two ports is demonstrated to be over 25.8 dB within its -10-dB fractional impedance bandwidth (FBW), 0.46%. When port 1 (port 2) is excited, the peak realized gain is 2.03 dBi (2.15 dBi) strictly along the broadside direction with a 12.4 dB (12.1 dB) FTBR. Index Terms-Dual polarization, broadside radiation, directivity, electrically small antennas, Huygens dipole antennas, near-field resonant parasitic elements. Richard W. Ziolkowski (M'87-SM'91-F'94) received the B.Sc. (magna cum laude) degree (Hons.) in physics from Brown University, Providence, RI, USA, in 1974; the M.S. Researcher. His current research interests include the application of new mathematical and numerical methods to linear and nonlinear problems dealing with the interaction of electromagnetic and acoustic waves with complex linear and nonlinear media, as well as metamaterials, metamaterial-inspired structures, and applications-specific configurations. Prof.