Amplifiers are classified as untuned (wide band) amplifiers and tuned (narrow band) amplifiers based upon their bandwidth. Untuned amplifiers will provide the constant gain over a limited band of frequencies i.e., from lower to upper cut-off frequency. Tuned amplifiers will amplify signals of only fixed frequency of which is equal to the resonant frequency of the tuned circuit LC. In this paper, firstly, a basic small-signal (untuned) amplifier is designed as a swamped amplifier which is commonly used in electronic devices to use as a preamplifier.
Thit Waso Khine (2019); Design Evolution from Small-Signal Amplifier to Small-Signal Tuned Amplifier including Analysis of their Bandwidth; International Journal of Scientific and Research Publications (IJSRP)
9(5) (ISSN: 2250-3153), DOI: http://dx.doi.org/10.29322/IJSRP.9.05.2019.p8990