Electronics Letters · 2000 · 28 citations · 3 references
EngineeringElectrical EngineeringAntennasVariable Rate TechnologyWireless CommunicationsAntenna ArraysAntenna DesignAntenna PolarizationMicrostrip AntennasMicrowave AntennasPlanar AntennasAntenna Array DesignAxial RatioCircular PolarizationCircularly Polarized Antenna DesignCircularly Polarized AntennasCircularly Polarized Radiation PatternsMicrostrip Antenna DesignMicrostrip Array Antennas
A microstrip antenna array for circular polarisation (CP) using a proximity L-strip line feed is proposed and experimentally investigated. By placing a cross-slot with unequal slot lengths on the circular patch, circular polarisation can be excited. Also, a sequential rotation technique is adopted for the design of this CP antenna array to widen the bandwidth. The impedance and axial ratio bandwidth values are 78 and 16.15%, respectively. The boresight axial ratio is 0.4 dB at 1.91 GHz.
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