A MEMS Cone-shaped Helix Antenna for THz Applications Using ANN

Abstract

The role of Micro-Electromechanical Systems (MEMS) antennas in Terahertz (THz) areas has recently graduated due to the modern Computer Aided Design (CAD) techniques. The very special demand for novel MEMS antennas with high performance for wide THz frequency range grows for the foreseeable future, and requires effective optimization processes of improving already proposed designs. This paper describes for the THz wireless access systems a new design of a cone-shaped helix antenna based on MEMS technology. The antenna is developed using tree-dimensional High Frequency Structure Simulator (3D-HFSS) for modal electromagnetic analysis, and accurate automatic strategists (Artificial Neural Network ANN) for active optimization. The optimization strategy aims to vary the antenna geometry and maximize it response for the selective frequency band with a high accuracy from Finite Element Method (FEM). The MEMS helix antenna presents very low return losses of less than -63dB at a resonance frequency equals to 3.59 THz, and less than -20dB for a wide frequency range from 3.12 to 4 THz. Excellent antenna performance and high structure precision are finally achieved by modifying and rectifying different tuneable parameters embedded in silicon platform including helix variables.