An architecture to simultaneously affect both amplitude and phase control from a reflectarray element using an impedance transformation unit is demonstrated. It is shown that a wide range of control is possible from a single element, removing the conventional necessity for variable sized elements across an array in order to form a desired reflectarray far-field pattern. Parallel plate waveguide measurements for a 2.2 GHz prototype element validate the phase and amplitude variation available from the element. It is demonstrated that there is sufficient control of the element's reflection response to allow Dolph-Tschebyscheff weighting coefficients for major-lobe to side-lobe ratios of up to 36 dB to be implemented.
ASJC Scopus subject areas
- Electrical and Electronic Engineering
- Condensed Matter Physics
Pochiraju, T., & Fusco, V. (2009). Amplitude and Phase Controlled Reflectarray Element Based on an Impedance Transformation Unit. IEEE Transactions on Antennas and Propagation, 57(12), 3821-3826. . https://doi.org/10.1109/TAP.2009.2026596