Abstract
ABSTRACTThis article presents a microstrip broadband open-slot antenna with linear polarization and circular polarization (CP) for integration with multiple commercial wireless communication systems. Two open slots are etched in the ground plane and applied as radiator elements. By utilizing a T-shaped feeding stub, the inductive reactance of the prototype antenna is compensated by a capacitive loading. Additionally, etching an inverted-L slit in the top segment of the ground plane brings about CP at 2.33 GHz. To enhance impedance-matching condition in the middle frequency band, an inverted-C coupling strip is embedded in the dominant open-slot radiator. This technique also generates a new resonance at 5.3 GHz. The proposed antenna can be a candidate of the radiator for long term evolution applications or wireless communication systems with linear and CPs.
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