In this paper, the performance of a 10-μm-elevated low-loss and low-dispersion elevated coplanar waveguide (ECPW) is presented. It is shown that a wide range of characteristic impedances, encompassing the 40-100Ω range, is obtainable. A very low effective dielectric constant (close to 1) is predicted based on the 3D finite-difference time-domain (FDTD) method and confirmed by measurement. The overlapped configuration on standard silicon reveals the best performance, with a loss of about 0.2 dB/mm, which is much lower than that of a conventional CPW at 40 GHz.
All Science Journal Classification (ASJC) codes
- Electronic, Optical and Magnetic Materials
- Atomic and Molecular Physics, and Optics
- Condensed Matter Physics
- Electrical and Electronic Engineering