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This deals with detailed information about filter theory.
One source is the Van Valkenburg and Shaman text Analog Filter Design.
Another text is by Chen, similar title.
Putting three poles at the same break frequency reduces the bandwidth.
At the designed corner frequency the gain response is now down by 9 dB so
the 3 dB point is pushed to a lower frequency.
Stagger tuning gives the three pole roll off but also maintains the designed bandwidth.
For example:
If you want a three pole Butterworth characteristic you can use a state-variable op-amp network tuned to have a Q of 10 (or a zeta of 0.5, depending on your background) and a single LPF op-amp stage.
Neither of these is tuned as a Butterworth but together they give the effect of a three pole Butterworth.
The State Variable op-amp network has several other names such as the Tow-Thomas Biquad or the Huelsman-Kerwin-Newcomb network.
It can provide a biquadratic function, meaning a quadratic in the numerator and a quadratic in the denominator.
Wiki User
∙ 13y ago
Wiki User
∙ 13y agoThis deals with detailed information about filter theory.
One source is the Van Valkenburg and Shaman text titled Analog Filter Design.
Another text is by Chen, similar title.
Putting three poles at the same break frequency reduces the bandwidth.
At the designed corner frequency the gain response is now down by 9 dB so
the 3 dB point is pushed to a lower frequency.
Stagger tuning gives the three pole roll off but also maintains the designed bandwidth.
For example:
If you want a three pole Butterworth characteristic you can use a state-variable op-amp network tuned to have a Q of 10 (or a zeta of 0.5, depending on your background) and a single LPF op-amp stage.
Neither of these is tuned as a Butterworth but together they give the effect of a three pole Butterworth.
The State Variable op-amp network has several other names such as the Tow-Thomas Biquad or the Huelsman-Kerwin-Newcomb network.
It can provide a biquadratic function, meaning a quadratic in the numerator and a quadratic in the denominator.
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What is single tuned voltage amplifier?
it is a circuit consisting of a tuned circuit with a capacitor in parallel with inductor and it is connected to collector terminal in common emitter configuration,, and it is used as frequency receiver
What is a tuned rf jfet amplifier?
It's a junction gate field effect transistor that has it's bandwidth tuned to operate (amplify) in the radio frequency range.
What is the bandwidth and Q factor for a good tuned amplifier?
It depends on the signal you are trying to receive. For instance, the AM frequency band lies around 500KHz to 1700kHz. Lets say you have a tuned amplifier such that the resonant frequency was set roughly in the middle of that band at 1000kHz (1MHz). AM radio stations typically space out their broadcasts 9-10kHz. So if Q=f_resonant/f_bandwidth the Q of a tuned amplifier with a bandwidth of 10kHz (which would be decent, maybe a little spill over), would be: Q=1Mhz/10kHz Q=100 The higher the Q, the greater the selectivity. Too high be a bad thing too.
Why tuned amplifier is not used in low frequency?
) Tuned amplifiers cannot be used at low frequencies because of the requirement of very large value of L in the tuned circuit [1]. This requirement of high value of L at low frequency is impossible because the size and weight of inductors become exceedingly large and Q becomes very low.
How operational amplifier works as an oscillator?
A: Very easy to do just provide a positive feedback and/or a phase shift it will oscillate
What is stagger tuned amplifier?
Stagger Tuned Amplifiers are used to improve the overall frequency response of tuned Amplifiers. Stagger tuned Amplifiers are usually designed so that the overall response exhibits maximal flatness around the centre frequency.It needs a number of tuned circuit operating in union. The overall frequency response of a Stagger tuned amplifier is obtained by adding the induvidual response together. Since the resonant Frequencies of different tuned circuits are displaced or staggered, they are referred as STAGGER TUNED AMPLIFIER.The main advantage of stagger tuned amplifier is INCREASED BANDWIDTH. Its Drawback is Reduced Selectivity and critical tuning of many tank circuits. They are used in RF amplifier stage in Radio Receivers.
What is high frequency tuned amplifier?
High frequency amplifier is a device which is tuned by high frequency. Tuned means the overlapping of generated frequency with that amplifier.
What is meant by double tuned amplifier?
An amplifier with tuned filters on both input and output.
What is tuned amplifier Can Somebody give exact definition?
Narrow band amplifier
What is a tuned amplifier?
an amplifier with a narrow band pass used to tune into a carrier signal.
Circuit for single tuned amplifier?
A single tuned amplifier basically consists of a tuned circuit (which may consist of an IFT or a parallel tuned LC circuit) connected to the collector of an amplifier circuit (in Common Emitter configuration). The tuned circuit is designed to get a resonant frequency equal to the incoming frequency signal that arrives at the base. The Single Tuned Amplifier gives maximum amplification to that particular incoming frequency which matches the resonant frequency of the tuned circuit and attenuates all other frequencies. Thus it gives sharp selectivity with a high Q-factor.
Is tuned voltage amplifier used in public address system?
no
The main application of tuned voltage amplifier?
As a frequency receiver
What Advantages of double tuned amplifiers over single tuned amplifiers?
The primary advantage of a double tuned amplifier, such as, an amplifier with a tuned circuit on the input and the output, is narrow bandwidth. Another advantage to the circuit is impedance matching with the previous stage, etc. And last but not least your double tuned amplifier will have more gain for electrons spent getting the job done. In our battery operated everything world that is an important design factor.
What is single tuned voltage amplifier?
it is a circuit consisting of a tuned circuit with a capacitor in parallel with inductor and it is connected to collector terminal in common emitter configuration,, and it is used as frequency receiver
What is a tuned rf jfet amplifier?
It's a junction gate field effect transistor that has it's bandwidth tuned to operate (amplify) in the radio frequency range.
What is class c tuned amplifier?
Class C tuned amplifier is a large signal tuned amplifier that amplifies high power signals of the radio frequency range. The amplifier is said to be Class C if the output cycle obtained is less than half a cycle of the full input cycle. This means the transistor remains active for less than half a cycle so that only that much part of the input waveform is reproduced at the output with amplification. For the remaining part, the transistor remains inactive.
