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In this Letter, a compact dual-band dual-mode microstrip-fed dipole-loop (MDL) element is proposed, which consists of a rectangular loop-structure embedded in the feed-line of a printed dipole. This MDL element exhibits an additional one-wavelength loop resonance at a lower frequency (1.55 GHz) with omnidirectional pattern, along with the conventional reflector-backed half-wavelength dipole mode (2...
A microstrip-fed compact multi-band slot antenna using a single split-ring resonator (SRR) is proposed. The SRR acting as a loading element introduces multiple lower-order resonances in the antenna, which can be controlled by varying the SRR's dimensions as well as its position with respect to the arm of the slot, without altering the geometry of the radiating slot. The concept is validated by a full-wave...
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