Design Investigation of a Novel Dual-Band Circularly-Polarized Microstrip Antenna for 2.4 GHz and 5.7 GHz

Dual‐band CPW‐fed rectangular patch antenna reactively loaded with a circular slot

“…To design small and compact communication systems, multiband antennas have received much attention for various wireless communication applications and many researches have been conducted on designing a dual‐band patch antenna . In addition to the structure of the radiator and the feeding technique, dual‐band operation may be obtained using the following methods; orthogonal modes, multipatch, or reactive loading .…”

“…In the latter method, Ref. suggests that the load is obtained by engraving T‐shaped slit, at the radiating edges, and L‐shaped slots at the corners of the square radiator, in Ref. , the antenna was loaded by etching the two rectangular slots on the ground and using L‐shaped inset feed, in , the load was achieved by etching L‐shaped slots and arms’ slots on the square radiator.…”