Dual-Circularly Polarized High-Gain Transmitarray Antennas at Ka-Band

Kien T. Pham, Antonio Clemente, Darwin Blanco, Ronan Sauleau

Research output: Contribution to journalArticleScientificpeer-review

1 Citation (Scopus)


This communication describes the performance of the dual-circularly polarized transmitarray antennas at the Ka-band with independent radiation characteristics. The proposed antenna architecture consists of a dual-linearly polarized (dual-LP) TA panel based on the interleaving technique combined with an add-on broadband polarizer to generate independent right-handed circular polarization (CP) (RHCP) and left-handed CP (LHCP) beams. This offers both dual-LP and dual-CP operation depending on the topology of the polarizer. The LP unit-cell is designed to achieve a 3 bit phase resolution, and the dual-LP TA panel is made of two interleaved single-LP subarrays with 52 × 52 and 53 × 53 elements operating in 45° and 135° single LP, respectively. The polarizer transforms the dual-LP into dual-CP while keeping the radiation independence of each polarization across the Ka-band. The experimental results obtained with three different prototypes pointing up to 50° validate the proposed concepts.

Original languageEnglish
Article number9103972
Pages (from-to)7223-7227
Number of pages5
JournalIEEE Transactions on Antennas and Propagation
Issue number10
Publication statusPublished - 2020


  • Dual-polarization
  • Ka-band
  • polarization independence
  • Satcom
  • transmitarray antenna (TA)


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