A rejection network that can be used instead of the twin-T network of Example 8.4 is the bridged-T network shown in Figure P8.3. The transfer function of this network is
![](https://test.transtutors.com/qimg/b1677e54-9f8d-451c-8f66-9c1849e58de5.png)
![](https://test.transtutors.com/qimg/55ee5359-e60d-465d-b1cb-5cccc4507ec9.png)
(a) Determine the pole-zero pattern and, using the vector approach, evaluate the approximate frequency response, (b) Compare the frequency response of the twin-T and bridged-T networks when Q = 10.
![](https://test.transtutors.com/qimg/03531e71-ae30-45c0-a8d7-34d5b2c7204a.png)
Example 8.4
As an example of the determination of the frequency response using the pole-zero diagram and the vectors to jω, consider the twin-T network shown in Figure 8.14 [6]. The transfer function of this network is
![](https://test.transtutors.com/qimg/af7b86c1-cecb-4e74-9d02-a96df4ef6b5a.png)