초록 ▼

A digital beam forming system includes an array of computing units (60-76) for weighting incoming signals and a plurality of summing processors (80-84) for generating output signals that represent weighted sums corresponding to rows within the array. The digital beam forming system can be incorporat

A digital beam forming system includes an array of computing units (60-76) for weighting incoming signals and a plurality of summing processors (80-84) for generating output signals that represent weighted sums corresponding to rows within the array. The digital beam forming system can be incorporated in either a transmitter or receiver used in a radio frequency communications system.

대표청구항 ▼

[ What is claimed is:] [1.] An apparatus for beam forming a plurality of channels in a communications system, the processor being operatively coupled to an array-antenna and responsive to a plurality of digital signals representing the plurality of channels, comprising:a plurality of computing units

[ What is claimed is:] [1.] An apparatus for beam forming a plurality of channels in a communications system, the processor being operatively coupled to an array-antenna and responsive to a plurality of digital signals representing the plurality of channels, comprising:a plurality of computing units forming an array having a plurality of rows and a plurality of columns, each of the plurality of columns weighting one of the digital signals to generate a plurality of weighted signals, wherein at least one of the plurality of computing units comprises a log converter for converting one of the plurality of digital signals into a log signal, an adder for summing the log signal and a log-converted weight value to generate a sum signal, and an inverse-log converter for converting the sum signal into one of the plurality of weighted signals; anda summing processor for generating a plurality of output signals, each of the plurality of output signals being produced by summing ones of the plurality of weighted signals generated by a respective one of the plurality of rows.