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This article attempts to address the question presented in its title, on the radiation of dipoles and slots and, in general, of complementary antennas. The endeavor begins with discussing Jacques Babinet and his far-from-trivial achievements in many fields. Then the original, scalar, version of Babinet's principle is given, together with a brief history of its porting to vector electromagnetics, and...
A meandered slot antenna is proposed without matching network. For size reduction, the meander-line configuration combined with slot dipole antenna was applied in tag antenna. Also, effects of the conductor area on the performance of the antenna are investigated for tag impedance matching. The proposed design is verified by simulation and measurement which show good agreement. The measured bandwidth...
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