Attenuation element

The attenuation element has a longitudinal resistor (R11), which is bridged by the series circuit of two branch resistors (R9, R14), the common terminal (H) of which is connected via the series circuit of a capacitor (C9), a transverse resistor (R12) and a diode (V6) to a reference potential. The di...

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Bibliographic Details
Main Authors LAUPER, ALFRED, STEFFEN, ANDREAS
Format Patent
LanguageEnglish
German
Published 14.11.1986
Edition4
Subjects
BASIC ELECTRONIC CIRCUITRY
ELECTRICITY
IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS
RESONATORS
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Summary:The attenuation element has a longitudinal resistor (R11), which is bridged by the series circuit of two branch resistors (R9, R14), the common terminal (H) of which is connected via the series circuit of a capacitor (C9), a transverse resistor (R12) and a diode (V6) to a reference potential. The diode (V6) can be connected to a voltage source (A2), so that it either blocks or conducts. If R01 = R02 = R, R03 and R04 are respectively the resistance values of the two branch resistors (R9 and R14), the transverse resistor (R12) and the longitudinal resistor (R11), the following relationships apply: R = Rt + 2.g.Rs R03 = (1 - g).Rs R04 = 2.Rt + Rt / (g.Rs) with the auxiliary values Rt = Ro (K - 1) / (K + 1) and Rs = 2K.Ro / (K - 1), where K = 10<A/20> is the linear attenuation with A = 20 log K as the attenuation in dB, Ro is the input resistance, and g is a parameter which can be freely chosen provided that the following conditions are fulfilled: R > 10 Ohm R03 > 10 Ohm R04 > 10 Ohm R < 1000 Ohm R03 < 1000 Ohm R04 < 1000 Ohm
Bibliography:Application Number: CH19850000759