Why it is called stagger tuned amplifier?
The resonant frequencies of two single tuned cascaded amplifiers can be adjusted and separated by an amount, to produce the bandwidth that is equal to the bandwidth of individual stages. As the resonant frequencies are staggered or displaced, we call it a stagger-tuned amplifier.
What is the advantage of stagger tuned amplifier?
The advantage of stagger tuned amplifier is to have a better flat, wideband characteristics in contrast with a very sharp, rejective, narrow band characteristics of synchronously tuned circuits (tuned to same resonant frequencies).
What is double tuned circuit?
The double-tuned circuit, among the most common filters found in radio equipment, consists of two tuned circuits, or resonators, that are coupled together, allowing energy in one to be shared with the other.
How do you reduce instability in tuned amplifier?
In order to prevent oscillations in tuned RF amplifiers it was necessary to reduce the stage gain to a level that ensured circuit stability. This can be accomplished in several ways such as lowering the Q of the tuned circuits, stagger tuning ,loose coupling between the stages.
What is stagger tuned amplifier list out its advantages and drawbacks?
Advantages and Disadvantages By using this amplifier an increased BW can be obtained. Compare with a single tune, the BW is √2 times. This amplifier has a high value of gain BW. In every stage of the amplifier, there is a small difference within the resonance.
What is a stagger tuned amplifier?
Staggered tuning is a technique used in the design of multi-stage tuned amplifiers whereby each stage is tuned to a slightly different frequency. In comparison to synchronous tuning (where each stage is tuned identically) it produces a wider bandwidth at the expense of reduced gain.
What are the different types of tuned circuits?
Types of Tuned Amplifiers
- Single tuned.
- Double tuned.
- Stagger tuned.
Why do tuned amplifiers need neutralization?
In tuned RF amplifiers, transistor are used at the frequencies nearer to their unity gain bandwidths (i.e. fT), to amplify a narrow band of high frequencies centred around a ratio frequency. between the stages or inserting a ‘loser’ element into the circuit.