CPC H04B 7/0617 (2013.01) [H01Q 3/38 (2013.01); H04B 7/0695 (2013.01); H04L 27/3405 (2013.01)] | 18 Claims |
1. A phased-array antenna system comprising:
a plurality of phased array antenna elements, each phased array antenna element comprising:
a radiating element configured to transmit an antenna element signal corresponding to the phased array antenna element;
a power amplifier configured to amplify the antenna element signal before transmission via the radiating element; and
an element adjustment circuit comprising:
one or more digital-to-analog converters (DACs) each configured to convert a portion of a beamforming data signal into a corresponding analog signal;
a phase shifter configured to modulate a phase of an element carrier signal of the phased array antenna element based on a first analog signal generated by the one or more DACs; and
a variable gain amplifier configured to modulate the element carrier signal of the phased array antenna element based on a second analog signal generated by the one or more DACs;
wherein the element adjustment circuit modulates the element carrier signal based on the beamforming data signal to generate the antenna element signal; and
wherein the first analog signal represents a phase portion of the beamforming data signal and the second analog signal represents an amplitude portion of the beamforming data signal.
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