초록 ▼

A method of and apparatus for effecting single sideband modulation which mixes and sums the quadrature and in-phase components of a baseband signal with the in-phase and quadrature components of an intermediate frequency (IF) signal to form in-phase and quadrature components of a sum signal having a

A method of and apparatus for effecting single sideband modulation which mixes and sums the quadrature and in-phase components of a baseband signal with the in-phase and quadrature components of an intermediate frequency (IF) signal to form in-phase and quadrature components of a sum signal having a frequency equal to the sum of the frequencies of the baseband and intermediate frequency signals and which mixes and sums the quadrature and in-phase components of an RF carrier signal with the in-phase and quadrature components of the sum signal to form a single-sideband signal.

대표청구항 ▼

[ What is claimed is:] [3.] A method of effecting single sideband modulation, comprising the steps of:a. forming two single sideband intermediate frequency signals that are in quadrature;b. filtering to remove unwanted harmonics of the intermediate frequency;c. multiplying the filtered intermediate

[ What is claimed is:] [3.] A method of effecting single sideband modulation, comprising the steps of:a. forming two single sideband intermediate frequency signals that are in quadrature;b. filtering to remove unwanted harmonics of the intermediate frequency;c. multiplying the filtered intermediate frequency single sideband signals with phase shifted quadrature radio frequency signals to form a pair of product signals; andd. adding or subtracting the product signals to select the desired single sideband output.