Distortion caused by controlling transistor implemented in the voltage controlled amplifier
- Resource Type
- Conference
- Authors
- Pospisilik, Martin; Navratil, Milan; Adamek, Milan
- Source
- 2020 ELEKTRO ELEKTRO, 2020. :1-6 May, 2020
- Subject
- Bioengineering
Communication, Networking and Broadcast Technologies
Components, Circuits, Devices and Systems
Computing and Processing
Engineered Materials, Dielectrics and Plasmas
Fields, Waves and Electromagnetics
General Topics for Engineers
Photonics and Electrooptics
Power, Energy and Industry Applications
Robotics and Control Systems
Signal Processing and Analysis
Transportation
Distortion
SPICE
Software
Mathematical models
JFETs
Harmonic distortion
Transistors
Voltage controlled amplifier
Harmonics
Linearization
- Language
This paper describes a voltage controlled amplifier with linearized response to the controlling voltage and discusses its harmonic distortion. As a controlling element, a JFET transistor has been utilized. The design of the amplifier has been made with the aid of Maple mathematical software and National Instruments Multisim circuit simulator. During the simulations, it was found that the controlling transistor would probably introduce significant distortion into the signal path. Therefore a set of measurements on real circuit was made in order to verify that the SPICE model of the transistor provided relevant results during the simulation. Both, the simulated and the really measured parameters of the amplifier are discussed within the framework of this paper.