Tri-band dual-polarization shared-aperture microstrip array for SAR applications

Shun-Shi Zhong, Zhu Sun, Ling-Bing Kong, Chu Gao, Wei Wang, Mou-Ping Jin

Research output: Contribution to journalArticlepeer-review

51 Citations (Scopus)


The design of a tri-band dual-polarization (TBDP) shared-aperture microstrip array antenna for synthetic aperture radar (SAR) applications is presented. It operates at L-, Sand X-bands with a frequency ratio of 1:2.8:8. This TBDP shared-aperture array is assembled by two L/S and L/X DBDP shared-aperture sub-arrays with one L-band dual-polarized sub-array. A prototype array has been fabricated and measured, which exhibits wide impedance bandwidth (VSWR ≤ 2) of 13.4%, 14.8%, and 16.8% in L-, S-, and X-bands, respectively. The measured array isolation is better than -27 dB in all three bands. The measured radiation patterns agree well with the simulation, confirming the cross-polarization level of below dB within the main lobe region, and the array scanning capability of ±27° in S- and X-bands. This array design approach can be further extended to shared-aperture arrays with more than three bands.
Original languageEnglish
Pages (from-to)4157-4165
Number of pages9
JournalIEEE Transactions on Antennas and Propagation
Issue number9
Publication statusPublished - 2012


  • Dual-polarization
  • microstrip array
  • shared-aperture
  • synthetic aperture radar
  • tri-band
  • wideband


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