Non-Uniformly Fed Broadband CTS Array for Side Lobe Level Reduction in E-plane

Thomas Potelon (1) , Mauro Ettorre (1) , Ronan Sauleau (1)

1 IETR - Institut d'Électronique et des Technologies du numéRique

We propose here a new architecture of parallel-fed Continuous Transverse Stub (CTS) antenna array based on non-uniform power dividers. The antenna comprises 16 slots fed in parallel by a parallel plate waveguide (PPW) corporate feeding network and a pillbox PPW coupler. For the first time, this network divides non-uniformly the power among the slots to achieve reduced side lobe levels (SLL) in E-plane. This is made possible by the development of a novel asymmetrical power divider in PPW technology. A CTS array has been designed in E-band (71-86 GHz) and validated by full-wave simulations over the entire bandwidth, with SLL below -28.5dB both in E- and H-planes. The gain remains stable between 71 and 86 GHz and in the range of 25 dBi.

Mots clés: Broad band antenna; high gain antenna; low sidelobe level; parallel plate waveguide; slot array

Domaines: Sciences de l'ingénieur [physics]

Thomas Potelon, Mauro Ettorre, Ronan Sauleau. Non-Uniformly Fed Broadband CTS Array for Side Lobe Level Reduction in E-plane. IEEE-Antennas-and-Propagation-Society International Symposium on Antennas and Propagation / USNC/URSI National Radio Science Meeting, Jul 2018, Boston, MA, United States. ⟨10.1109/apusncursinrsm.2018.8609160⟩. ⟨hal-02083888⟩