Triple-slot phase-shifting cell loaded with one variable capacitance for reflectarray applications

A new linearly polarised phase-shifting cell for reflectarray applications is presented. It consists of three parallel rectangular slots etched in a ground plane and loaded with a combination of variable and fixed capacitances to provide a 2-bit phase-shifter. The proposed cell is fabricated and characterised in C-band using the waveguide simulation approach with four fixed states.