Antenna Design for Directivity-Enhanced Raman Spectroscopy
Figure 1
Multilayer substrate to control the radiation pattern of a dipole antenna. Thicknesses of ground plane, dielectric (TiO2) spacer, and top gold layer are 150 nm, 40 nm, and 50 nm, respectively. Dipole antenna length of 130 nm with a 20 nm feed gap was used to operate at wavelength of 840 nm.
