Abstract
A circularly polarized (CP) 4 × 4 array antenna based on substrate integrated waveguide (SIW) technology is presented. Circular polarization is achieved by applying the sequential rotation technique (SRT) with a well-designed sequential feed network and linear-polarized array elements. The proposed 4 × 4 array has a wide axial ratio (AR) bandwidth of 14% from 18.3 to 21.1 GHz with gain > 13 dBic. Then, the array is expanded to achieve higher gains. A 16 × 16-element array is designed, fabricated, and tested. Test results show that the 16 × 16 array has an AR bandwidth of 13.8% from 18.5 to 21.25 GHz and a peak gain of 25.9 dBic at 20.5 GHz.
Original language | English |
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Article number | 7393497 |
Pages (from-to) | 1493-1497 |
Number of pages | 5 |
Journal | IEEE Transactions on Antennas and Propagation |
Volume | 64 |
Issue number | 4 |
DOIs | |
Publication status | Published - 1 Apr 2016 |
Externally published | Yes |
Keywords
- Antenna array
- circular polarization
- high gain
- substrate integrated waveguide (SIW)