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Negative N square impedance converter

A technology of impedance converter and resistor, which is applied in the field of electrical information, can solve the problems of inability to realize negative impedance transformation, single form, and difficulty in realization, and achieve the effect of expanding usage, obvious effect, and improving performance

Inactive Publication Date: 2016-11-23
NANJING UNIV OF SCI & TECH
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Problems solved by technology

These two circuits are the most basic forms, but the form is single and cannot achieve higher-level negative impedance transformation
In engineering practice, a negative N-square impedance converter is needed to achieve greater impedance conversion. Obviously, relying solely on the current inversion negative impedance converter (CNIC) will greatly exceed the rated value of the operational amplifier current, which is difficult to achieve; the same , simply relying on the voltage inverting negative impedance converter (VNIC) will greatly exceed the rated value of the operational amplifier voltage, and it is difficult to achieve

Method used

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Embodiment Construction

[0018] The basic idea of ​​the present invention is to cascade the current control current source and the voltage control voltage source, not only to change the current direction and value, but also to change the voltage value; it is also possible to cascade the current control current source to perform hierarchical current amplification and change the current direction and value; it is also possible to control the voltage source through the cascaded voltage to reduce the graded voltage and change the voltage direction and value. In this way, various types of negative N-square impedance converters are formed, which basically maintain the rated value of the operational amplifier, which has guiding significance in theory and has application value in engineering practice. The invention can realize negative N-square impedance transformation to meet engineering needs.

[0019] The circuit designed by the present invention to realize the above idea includes multiple operational ampl...

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Abstract

The invention provides a negative N square impedance converter. The negative N square impedance converter comprises multiple operational amplifiers and multiple resistors. Each operational amplifier is matched with two resistors so that multiple current control current sources are formed or multiple voltage control voltage sources are formed or the current control current sources and the voltage control voltage sources of the same number are formed. The current control current sources and the voltage control voltage sources realize the negative N square impedance converter through cascading. The negative N square impedance converter is suitable for a DC circuit and also suitable for a sinusoidal current circuit so that the higher level of negative impedance conversion can be realized.

Description

technical field [0001] The invention belongs to the technical field of electrical information, and in particular relates to a negative N-square impedance converter. Background technique [0002] Negative Impedance Converter NIC (Negative Impedance Converter) is a four-terminal network (or two-port network) that can transform an impedance (or component parameter) in a certain proportion and change its sign. Negative impedance converter, as a very useful active component, has been widely used in electronic circuits with various functions. [0003] According to the relationship between input voltage and input current and output voltage and output current, negative impedance converters can be divided into two types: current inversion type (CNIC) and voltage inversion type (VNIC). Publicly published papers show that a negative impedance converter with a transformation ratio of k can be realized through devices such as operational amplifiers and resistors. The current inverting ...

Claims

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Application Information

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IPC IPC(8): H03H11/44
Inventor 康奇蔡雷龙康明才
Owner NANJING UNIV OF SCI & TECH
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