| CPC H01Q 3/34 (2013.01) [H03F 3/22 (2013.01); H03F 2200/451 (2013.01)] | 11 Claims |
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1. A programmable analog beamformer device comprising:
at least two independent user programmable logic controlling input radio frequency channels generating a single frequency sine signal driven by user selected phase and amplitude inputs;
each channel having components serially connected from a buffer circuit to a phase-shifter, an amplitude control unit, a power amplifier and a load to a ground:
each phase-shifter having a first order filter isolated by a buffer amplifier at input and output to maintain filters at first order;
each load carrying half of the actual impendence in differential power delivery and complete impedance with a single ended power delivery, and
each ground being a virtual ground wherein the differential power is zero voltage of a beamformer circuit and a real ground of the beamformer circuit where a single ended power delivers piezo electric loads for ultrasound transducer output
whereby a user selected phase and amplitudes independently in an array of radio frequency parallel channels can focus ultrasound beams via transducer output onto a target.
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