Patent ID: 7889787
Filing Date: 2011-02-15
Classification: G01S,G10K,H03F

Abstract:
1. An integrated circuit transmitter for generating a bipolar, pulse-width modulated waveform, the circuit comprising: a signal port and a control port aimed to receive primary sequences and beamformation data, wherein the beamformation data is a pair of programmable rotating factors, the rotating factors are sine and cosine function of a phase angle, Ψ represented in a digital form; a power amplifier; a transmit controller coupled to said power amplifier; and a plurality of programmable current drivers coupled to said transmit controller; each of said current drivers comprises a transistor, an output, a reference input, a switching input, a data port, and first and second clock terminals, said clock terminals responsive to receive first and second primary sequences from said signal port; said transistor having a gate, a source, and a drain, said gate and drain respectively connected to the reference input and the output; wherein each said current drivers further comprises a digitally programmable resistor connected to the source of said transistor and a multiplexer enabling said programmable resistor, and wherein: said multiplexer selecting between the clock terminals in response to a logical signal applied to the switching input, said programmable resistor having conductance; said conductance responsive to a binary word applied to said data port manifesting itself during merely times when a selected clock terminal exhibits a particular logic state.