Figure 3.

Accurate and broadband beam steering at different harmonics. (a–h) Calculated (dashed lines) and experimental (solid lines) directional diagrams for multi-order harmonics, including -3rd-order (orange lines), -1st-order (red lines), +1st-order (blue lines) and +3rd-order (green lines) harmonics, of the TDCM at f_c = 27 GHz and f₀ = 100 kHz under different phase distributions listed on the right. (i–l) Calculated and (m–p) experimental directional diagrams for the +1st-order harmonic of the TDCM at f_c = 22, 25, 30, 33 GHz and f₀ = 100 kHz under the phase distributions ‘000000000000’ (red lines), ‘554433221100’ (blue lines), ‘11-10-9876543210’ (green lines) and ‘963096309630’ (purple lines), respectively.