Phase-shifting cell loaded with variable capacitances for dual linearly polarized reflectarrays
Résumé
A new dual linearly polarized phase-shifting cell for reflectarray applications is presented. It consists of two orthogonal sets of parallel rectangular slots etched in a ground plane. Each set may be loaded with a combination of variable and fixed capacitances to provide a reconfigurable 2-bit phase-shifter for both polarizations. A passive version of the proposed cell has been fabricated and characterized in C-band with four fixed states. For each polarization only two variable capacitances are needed in order to control the phase of the reflected wave.
Domaines
Electromagnétisme
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