Answers are grounded in this paper and cite their sources.
This letter presents the design of a coplanar waveguide (CPW) circularly polarized antenna for the central frequency 900 MHz, it comes in handy for radio frequency identification (RFID) short-range reading applications within the band of 902-928 MHz where the axial ratio of proposed antenna model is less than 3 dB. The proposed design has an axial-ratio bandwidth of 36 MHz (4%) and impedance bandwidth of 256 MHz (28.5%).
No takes yet. Share an insight, caveat, or question.
Raviteja et al. (2014) studied this question.
Synapse has enriched 10 related papers. Consider them for comparative context: