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Abstract

A method for adjusting the balancing impedance of a hybrid junction for maximization of the hybrid attenuation within the range between two operating frequencies, an upper and a lower one, when using a balancing impedance formed by two series-connected resistors (R.sub.1, R.sub.2) and a capacitor (C.sub.1) connected in parallel with one of said resistors. For the achievement of an optimal matching of the balancing impedance with the impedance of the line wo which the hybrid junction is connected to when all components of the balancing impedance are adjusted, the method according to the invention is effected in such a manner that (a) the first resistor (R.sub.1) is adjusted for the maximization of the hybrid attenuation at the upper frequency, (b) the capacitor (C.sub.1) is adjusted for the maximization of the hybrid attenuation at the upper frequency, (c) the second resistor (R.sub.2) is adjusted for the maximization of the hybrid attenuation at the lower frequency, (d) the first resistor (R.sub.1) is readjusted for the maximization of the hybrid attenuation at the lower frequency, (e) the second resistor (R.sub.2) is readjusted for the maximization of the hybrid attenuation at the lower frequency, and (f) the capacitor (C.sub.1) is readjusted for the maximization of the hybrid attenutation within the whole range of operating frequencies, with an eventual weighing of certain frequencies. (FIG. 8)

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