Multi-scale approach for the electromagnetic modelling of MEMS-controlled reflectarrays

A new approach, named the scale changing technique, is performed here for the electromagnetic modelling of reflect arrays controlled by radio-frequency micro- electromechanical switches. Based on the partition of the reflectarray surface in planar sub-domains with various scale levels, this technique derives the phase- shift dynamics from the simple cascade of networks, each network describing the electromagnetic coupling between two scale levels. Higher-order modes allow the accurate representation of the electromagnetic field local variation while lower-order modes are used for coupling the various scales.

[1]  Raphael Gillard,et al.  A new reflectarray cell using microstrip patches loaded with slots , 2005 .

[2]  Raphael Gillard,et al.  A steerable reflectarray antenna with MEMS controls , 2003, IEEE International Symposium on Phased Array Systems and Technology, 2003..

[3]  H. Aubert,et al.  Scale Changing Technique for MEMS-controlled phase-shifters , 2006, 2006 European Microwave Conference.

[4]  D. Voyer,et al.  Radar cross-section of self-similar planar targets , 2005 .

[5]  Etienne Perret,et al.  N‐port network for the electromagnetic modeling of mems switches , 2005 .

[6]  Peter Russer,et al.  The Transmission Line Matrix Method , 2000 .

[7]  A. Barka,et al.  Multidomain electromagnetic modelling for installed performance of antennas on aerostructures (IPAS) , 2005, 2005 IEEE Antennas and Propagation Society International Symposium.

[8]  Patrick Pons,et al.  MEMS controlled phase-shift elements for a linear polarised Reflectarray , 2005 .

[9]  D. Voyer,et al.  Scale Changing Technique for the Electromagnetic Modeling of Planar Self-Similar Structures , 2006, IEEE Transactions on Antennas and Propagation.

[10]  Y. Rahmat-Samii,et al.  Fractal FSS: a novel dual-band frequency selective surface , 2000 .

[12]  Z. Chen,et al.  The transmission line matrix (TLM) method and its boundary treatments. , 1992 .

[13]  J. Zapata,et al.  Generalized-scattering-matrix analysis of a class of finite arrays of coupled antennas by using 3-D FEM and spherical mode expansion , 2005, IEEE Transactions on Antennas and Propagation.

[14]  Herve Aubert,et al.  Multiscale modeling: from Electromagnetism to the GRID , 2008 .

[15]  L. Roselli,et al.  Rigorous modeling of packaged Schottky diodes by the nonlinear lumped network (NL/sup 2/N)-FDTD approach , 2000 .

[16]  J. Mosig,et al.  Analysis of finite phase arrays of microstrip patches , 1993 .

[17]  Etienne Perret,et al.  Scale-changing technique for the computation of the input impedance of active patch antennas , 2005 .