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A broadband magnetic coupling antenna with low far-field gain for ultrahigh frequency radio frequency identification near-field applications is presented in this communication. The proposed antenna is consisted of a number of loop units and each unit has in-phase current along the loop. It generates a strong uniformly distributed magnetic field over a large interrogation. To meet different scenarios,...
A compact triple band antenna array for GNSS application, covers GPS L1, L2 and L5 frequency bands, is proposed in this paper. The array is comprised of 4 radiating elements spaced 0.47 wavelength apart (center to center) at the GPS L1 band and filled with dielectric material and three stacked patches. It is observed that due to the compactness of the antenna array the mutual coupling degrades the...
A design method of a tanh profiled corrugated horn coupling to the fundamental Gaussian beam mode with low sidelobe levels and symmetry radiation pattern is presented working at Terahertz(THz) frequency. The calculation of slot depth of feedhorn has a variable-pitch-to-width-slot mode converter in order to produce the HE11 hybrid mode, whilst increasing a linear phase stability section reaches the...
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