Abstract
This communication presents an improved design and implementation of a broadband circularly polarized antenna that features a size reduction, good axial-ratio bandwidth and good return loss bandwidth. The circuit comprises one Schiffman phase shifter that is used to obtain a wideband phase difference of 90$\circ, and a pair of orthogonally positioned linearly polarized slot antennas with equal radiation strength that are used to accomplish a circular polarization by combining the horizontally and vertically polarized waves with a Wilkinson power divider. Measured results show that the 3 dB axial-ratio bandwidth of the proposed antenna can reach 81.5% (1.6-3.8 GHz), and the 10 dB return loss bandwidth is 100% (1.48-4.47 GHz).
| Original language | English |
|---|---|
| Article number | 6756953 |
| Pages (from-to) | 3343-3348 |
| Number of pages | 6 |
| Journal | IEEE Transactions on Antennas and Propagation |
| Volume | 62 |
| Issue number | 6 |
| DOIs | |
| Publication status | Published - 2014 Jun |
All Science Journal Classification (ASJC) codes
- Electrical and Electronic Engineering