Efficient Sideband Suppression in 4-D Antenna Arrays Through Multiple Time Modulation Frequencies

Jixin Guo (1) , Shiwen Yang (1) , Yikai Chen (1) , Paolo Rocca (2) , Jun Hu (1) , Andrea Massa (3, 2)

1 School of Electronic Engineering, University of Electronic Science and Technology of China, Chengdu, China
2 UNITN - Università degli Studi di Trento = University of Trento
3 L2S - Laboratoire des signaux et systèmes

A novel approach, named multiple time modulation frequency, is proposed for the effective suppression of the sideband radiations in 4-D antenna arrays. The time modulation frequency, different for each array element, is exploited as additional design parameter to avoid the superposition of the sideband frequencies generated by the array elements. A customized optimization strategy including the analysis of the mutual coupling effects among the array elements is proposed for the 4-D array synthesis. Selected numerical and experimental results are provided to show that the sideband level of a 4-D antenna array can be significantly reduced by properly designing the switch-on time intervals of each element, even with uniform amplitude excitations.

Domaines: Electromagnétisme; Traitement du signal et de l'image [eess.SP]

Jixin Guo, Shiwen Yang, Yikai Chen, Paolo Rocca, Jun Hu, et al.. Efficient Sideband Suppression in 4-D Antenna Arrays Through Multiple Time Modulation Frequencies. IEEE Transactions on Antennas and Propagation, 2017, 65 (12), pp.7063 - 7072. ⟨10.1109/TAP.2017.2766444⟩. ⟨hal-01774997⟩