DIGITAL SPECTRUM ANALYZER Russian patent published in 1997 - IPC

FIELD: digital radio measurement technology. SUBSTANCE: digital spectrum analyzer has input matching unit the input of which serves as input of digital spectrum analyzer, analog-to-digital converter, multiplier, read-only storage of weight function coefficients, specialized processor of Fourier fast conversion, on-line storage of results of specialized processor of Fourier fast conversion the output of which is output of digital spectrum analyzer, clock-pulse generator, and control device, as well as adder, buffer on-line storage, address conversion unit, and switching circuit. First input of adder is connected to multiplier output and its output, to input of specialized processor of Fourier fast conversion and to switching circuit input, the output of which is connected to data input of buffer on-line storage. Output of the latter is connected to second input of adder, and address input is connected to output of address conversion unit. Input of address conversion unit is connected to address forming unit the reset input of which is connected to control device which is also connected to control inputs of specialized processor of Fourier fast conversion, on-line storage of conversion results and of switching circuit. EFFECT: higher resolution of digital spectrum analyzer. 3 dwg