WIDE-BAND DIFFERENTIAL PHASE INVERTER Russian patent published in 2003 - IPC

FIELD: radio electronics, formation of quadrature signals, in particular. SUBSTANCE: invention can find use in formation and detection of single-band signal in transmitting and receiving radio and TV hardware, in building of noise-immune radio communication and detection systems. Wide-band differential phase inverter incorporates even number of elementary phase circuits, subtraction circuits which number equals number of pairs of elementary phase circuits and adder connected in series. Each output of first and last, second and next to last and so on elementary phase circuits is connected to proper input of first subtraction circuit, second subtraction circuit and so fourth. Output of each subtraction circuit is connected to corresponding input of adder. One orthogonal signal is picked off connection coupling middle pair of elementary phase circuits, another signal is picked off output of adder. EFFECT: increased accuracy and reduced insensitivity of phase inverter to spread of parameters. 2 dwg