Abstract Here, the planar superstrate is used to tailor the conical beam.In the applications of conical beam antenna, making a good balance between the wider coverage and the Synthesis and properties of fluorene based small molecule acceptors containing aromatic malononitrile functionalities higher gain is always a challenge, while the planar superstrate provides the freedom of design.Through adjusting the parameters of the planar superstrate, it is possible to change the coverage range and to make the beam more flat.
To verify the proposed method, some simulated results are presented and two prototypes with homogeneous dielectric slab superstrate and with patterned dielectric slab superstrate are fabricated and measured.The simulated results and the measured ones are in Species diversity and chemical properties of litter influence non-additive effects of litter mixtures on soil carbon and nitrogen cycling. good agreement.