Abstract
A novel asymmetric plus shaped fractal slotted microstrip antenna with a Yagi-Uda concept for circularly polarized radiation and high gain has been proposed for radio frequency identification (RFID) applications. Four asymmetric plus shape slots are embedded symmetrically in the center of all four quadrants of square patch. To increase the gain, Yagi-Uda concept has been proposed. To suppress undesirable higher harmonics, dumbbell shape defected ground structure (DGS) has been introduced at the ground layer of the antenna. To compensate the reduction of the gain due to DGS, self-similar structure (fractal) of plus shape is integrated with all four plus shape slots. The 3 dB axial ratio (AR) bandwidth of 4 MHz at center frequency of 862 MHz, 10 dB impedance bandwidth of 13.20 MHz and a gain of 4.25 dB have been achieved with the proposed antenna.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
