Title :
Equivalent electrical circuit model for design and optimization of MEMS-controlled reflectarray phase shifter cells
Author :
Tahir, Farooq Ahmad ; Aubert, Hervé
Author_Institution :
LAAS, CNRS, Toulouse, France
Abstract :
An optimized design of a MEMS-based phase shifter cell based on an equivalent circuit model is presented. The optimization is performed by controlling five key design parameters of the unit cell which are: the number of MEMS switches, their state (ON/OFF), their appropriate location inside the slot, their ON/OFF capacitances and whether they should be used singly or in a pair. By controlling and regulating these parameters through the equivalent electrical circuit, the design of the phase shifter cell can be optimized. This optimization process results in phase shifter configurations that permit a 360° phase range along with the required number of linearly distributed phase states. Minimization of power losses within the unit cell is the main issue addressed in this article.
Keywords :
antenna arrays; equivalent circuits; microswitches; optimisation; phase shifters; reflector antennas; MEMS switch; MEMS-controlled reflectarray phase shifter cell optimization; ON-OFF capacitance; equivalent electrical circuit model; power loss; Capacitance; Equivalent circuits; Integrated circuit modeling; Micromechanical devices; Microswitches; Phase shifters;
Conference_Titel :
Antennas and Propagation (EUCAP), Proceedings of the 5th European Conference on
Conference_Location :
Rome
Print_ISBN :
978-1-4577-0250-1