SU794718A1 - Amplitude-frequency corrector of coaxial cable characteristic - Google Patents

Description

Proposed Amplitude-Coupled Corrector Contains an external conductor / coaxial cable, connected to the first input bus 2 of the amplifier and connected across the first inductance coil 3 and the first capacitor 4 to the first end of the first p-eistor 5. Contact the external conductor / The coaxial cable is also connected through the second inductance 6 and the second resistor 7 connected in series with the first end of the third inductance 8. The first end of the third coil and the inductance 8 connect via the third resistor 9. to the second end of the first resistor 5. The second end of the first resistor 5 is connected via the fourth resistor W with a contact of the inner conductor 11 of the coaxial cable connected via the second co-capacitor 12 to the second end of the third inductance 8.

The proposed amplitude-frequency equalizer also contains the third capacitor 13, the fourth inductor 14: Fifth resistor 15, connected in parallel between the first end of the third inductance 8 second input w, another 16 amplifier. When this ratio of the capacitances of the third and first. Capacitors 13 VI 4 is 50, and the ratio of the inductances of the fourth and first inductors 14 and 5 is 2.

An amplified frequency equalizer produces amillite-frequency correction of frequency distortions introduced by a coaxial cable into a signal transmitted through it, for example, into a signal of a multichannel transmission system with frequency division channels. In this case, the first and third inductive coils 3 and 8, the first and second capacitors 4 and 12 and the first, third and fourth resistors 5, 9 and 10 provide a high frequency independence of its input resistance.

The use of the invention allows to significantly reduce the error of the amplitude-frequency correction characteristics of the coaxial cable and also provides the relative simplicity of the construction of the amplitude-frequency corrector of the characteristics of the coaxial cable. I)

Formula of invention

Amplitude-frequency corrector of the coaxial cable characteristics, containing the contact of the outer conductor of the coaxial cable, connected to the first input bus of the amplifier and connected through the first coil connected in parallel. Inductive NO. And the first capacitor from the first ends of the first resistor, and through the second coil connected in series. inductance .and the second resistor - with the first end of the third inductance coil connected through the third resistor to the second end of the first cut. of the resistor connected through The fourth resistor with a contact of the internal conductor of the coaxial cable connected through the second capacitor to the second end of the third inductance coil, characterized in that the third capacitor is inserted into the other end of the amplitude-frequency correction. , the fourth inductance coil and the fifth reistor, connected in parallel between the first end of the fourth resistor and the second input bus w / L | Ittel, and the ratio of the capacitors of the third and first capacitors and the ratio of the inductances of a quarter first and second inductors rav.ny 1-40 and 9-100 respectively.

Sources of information taken into account in the examination:

1. Japanese Patent No. 50-21049, cl. 97 (5) E 23, 1975.

2. Astashkina OI and others. The transmission system K-ZOO. - M., Svy, 1977, p. 48-64 (prototype).

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Claims (1)

Claim An amplitude-frequency corrector for the characteristics of a coaxial cable, containing a contact of the external conductor of the coaxial cable connected to the first input bus of the amplifier and connected through the first inductance coil and the first capacitor connected in parallel to the first end of the first resistor, and through the second inductance coil and second resistor connected in series with the first end of the third inductor connected through the third resistor to the second end of the first resistor connected through four a resistor with a contact of the inner conductor of the coaxial cable connected through a second capacitor to the second end of the third inductor, characterized in that, in order to reduce the error of the amplitude-frequency correction, a third capacitor, a fourth inductor and a fifth resistor are connected in parallel between the first end of the fourth resistor and the second input bus of the amplifier, the ratio of the capacitances of the third and first capacitors and the ratio of the inductances of the fourth and first cat nis respectively equal inductance 9-100 and 1-40.