Title :
Constant-phase dual polarization MEMS-based elementary cell for electronic steerable reflectarrays
Author :
Montori, Simone ; Marcaccioli, Luca ; Gatti, Roberto Vincenti ; Sorrentino, Roberto
Author_Institution :
Dept. of Electron. & Inf. Eng., Univ. of Perugia, Perugia, Italy
fDate :
Sept. 29 2009-Oct. 1 2009
Abstract :
A reconfigurable radiating element for beam steering reflectarray is proposed. The elementary cell consists of a square patch slot-coupled to a coplanar transmission line, operating at 76.5 GHz, with 1-bit phase resolution (0°/180°). The control is obtained by activating two pairs of MEMS switches placed on the backside of the radiating element. Such configuration allows dual polarizations and a flat phase shift response over a broad band (theoretically unlimited). Full-wave simulations are presented for 76.5 GHz patch, whereas a demonstrator operating at 10 GHz was simulated, manufactured and tested to confirm the basic principle of operation.
Keywords :
antenna radiation patterns; beam steering; coplanar transmission lines; microswitches; MEMS switches; beam steering reflectarray; constant-phase dual polarization MEMS; coplanar transmission line; demonstrator; electronic steerable reflectarrays; elementary cell; frequency 10 GHz; frequency 76.5 GHz; full-wave simulations; reconfigurable radiating element; Circuits; Communication industry; Defense industry; Frequency; Geometry; Polarization; Radar antennas; Reflector antennas; Space technology; Varactors;
Conference_Titel :
Microwave Conference, 2009. EuMC 2009. European
Conference_Location :
Rome
Print_ISBN :
978-1-4244-4748-0
