Broadband High-Gain SIW Cavity-Backed Circular-Polarized Array Antenna

Dong Fang Guan, Can Ding, Zu Ping Qian, Ying Song Zhang, Y. Jay Guo, Ke Gong

Research output: Contribution to journalArticlepeer-review

110 Citations (Scopus)


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 languageEnglish
Article number7393497
Pages (from-to)1493-1497
Number of pages5
JournalIEEE Transactions on Antennas and Propagation
Issue number4
Publication statusPublished - 1 Apr 2016
Externally publishedYes


  • Antenna array
  • circular polarization
  • high gain
  • substrate integrated waveguide (SIW)


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