A tuned amplifier operates over a band of frequencies centered on a resonant frequency. Its two main requirements are to provide high gain and good selectivity.
We have several applications in telecommunications systems where it is necessary to amplify a narrow band of frequencies centred on one frequency. A typical example is shown in the frequency-modulated transmitter illustrated below:
In this case, the radio frequency (RF) amplifier is used to increase the amplitude of the oscillator output, while the frequency tripler stages are used to increase the transmitted frequency to 104.5 MHz. Both these stages are forms of tuned amplifier.
Related: The Basic Principle of Operation of an Oscillator
The applications of tuned amplifiers include:
You can also read: The Fundamentals of Oscillators in Communication Systems
Recommended: The Ultimate Guide to Electrical Maintenance
Power quality has become an important issue to electricity consumers at all levels of consumption.…
The importance of printed circuit board (PCB) technology has escalated throughout the years with the…
One of the key challenges in measuring the electrical current in high voltage, high power…
The Concept behind Wiegand Effect Based Sensors The Wiegand effect technology employs the unique…
An accelerometer is a sensor that is designed to measure acceleration or rate of change…
The USB-6009 is a small external data acquisition and control device manufactured by National Instruments…
