Question
What is the frequency response of a T-network with series capacitors and a shunt inductor?
Answer Options
- A) Low-pass
- B) High-pass
- C) Band-pass
- D) Notch
Correct Answer: B
Explanation
A filter’s frequency response (low-pass, high-pass, etc.) is determined by how its components behave across the frequency spectrum. Capacitors pass high frequencies and block low frequencies, while inductors pass low frequencies and block high frequencies. In a T-network, there are two series components and one shunt component.
In a T-network with series capacitors and a shunt inductor, the capacitors are placed in the path of the signal. Since series capacitors inherently block low frequencies and allow high frequencies to pass, this network acts as a High-pass filter. The shunt inductor simply assists by shunting low frequencies to ground.
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