Abstract
In this communication, we present a high-performance circularly polarized (CP) stacked electromagnetically coupled patch antenna and its subarray at X band. In addition to low boresight axial-ratios, the subarray has measured 10-dB impedance and 3-dB axial-ratio bandwidths of 25.6% and 23.5% respectively as compared to the measured 20.2% and 8.0% for a single element. The mutual coupling for this element is shown to be lower than other reported stacked patch antennas and obtained a gain ( 10 dbic) bandwidth of 23.5%. The calculated antenna efficiency is 89% around center frequency for the single element whereas the subarray has an overall efficiency of 71% ( 1 5 dB) over 21% bandwidth.
| Original language | English |
|---|---|
| Pages (from-to) | 1365-1370 |
| Number of pages | 6 |
| Journal | IEEE Transactions on Antennas and Propagation |
| Volume | 52 |
| Issue number | 12 |
| DOIs | |
| Publication status | Published - 2004 |
Keywords
- antennas
- axial-ratio bandwidth
- electric impedance
- electromagnetic wave polarization
- microstrip antennas
- patch antennas