DEVICE DETERMINING ENERGY PARAMETERS OF ANTENNA Russian patent published in 1999 - IPC

FIELD: radio engineering. SUBSTANCE: device determining energy parameters of antenna has binary counter 1, digital-to-analog converter 2, controlled generator 3, unit 4 to extract square root, RS flip-flop 5, three-input AND gate 6, directional coupler 7, tunable band-pass filter 8, digital power meter 9, first 10 and second 11 dividers, clock pulse generator 12, differentiator 13, digital frequency meter 14, four-tap delay element 15, first 16 and second 17 multipliers, digital code former 18, single pulse generator 19, OR gate 20, single-shot multivibrator 21, inverter 22, register 23, first 24 and second 25 tested antennas. Determination of energy parameters of antenna is conducted by discrete tuning of generator 3 with the aid of generator 12, multivibrator 21, RS flip- flop 5, AND gate 6, binary counter 1 and digital-to-analog converter 2 in preset frequency range, by radiation of energy of generator 3 by antenna 24 into space, by reception by antenna 25 identical to antenna 24 of radiated energy, by measurement by filter 8 and meter 9 of power level P_пpi across output of antenna 25, by measurement by frequency meter 14 of frequency f_i of signal emitted by generator 3, by computation of effective area S_i of tested antenna on frequency f_i with the use of units 4, 10 and 16, by computation of gain factor G_i of antenna with the help of units 17 and 11 and by recording of result of computation of S_i and G_i on each of discrete frequencies f_i by register 23. EFFECT: automatization of measurements and provision for simultaneous determination of gain factor and effective area of antenna surface in wide band of frequencies, increased fastness of device. 2 dwg