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ELEC 412 - Lecture 111 ELEC 412 RF & Microwave Engineering Fall 2004 Lecture 11.

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Presentation on theme: "ELEC 412 - Lecture 111 ELEC 412 RF & Microwave Engineering Fall 2004 Lecture 11."— Presentation transcript:

1 ELEC 412 - Lecture 111 ELEC 412 RF & Microwave Engineering Fall 2004 Lecture 11

2 ELEC 412 - Lecture 112 RF Filter Design – Basic Filter Types

3 ELEC 412 - Lecture 113 Filter Attenuation Profiles

4 ELEC 412 - Lecture 114 RF Filter Parameters Insertion Loss: Ripple Bandwidth: BW 3dB = f u 3dB – f L 3dB Shape Factor: Rejection

5 ELEC 412 - Lecture 115 Low-Pass Filter Cascading four ABCD-networks.

6 ELEC 412 - Lecture 116 RF Filter Parameters Cascading four ABCD-networks.

7 ELEC 412 - Lecture 117 Low-Pass Filter Frequency Response Frequency Response from the ABCD Definitions: So the Transfer Function is Simply:

8 ELEC 412 - Lecture 118 Low-Pass Filter Frequency Response Corresponding Phase is: Group Delay:

9 ELEC 412 - Lecture 119 High-Pass Filter

10 ELEC 412 - Lecture 1110 High-Pass Filter Frequency Response Frequency Response from the ABCD Definitions: So the Transfer Function is Simply:

11 ELEC 412 - Lecture 1111 High-Pass Filter Frequency Response For    : Inductive Influence Can Be Neglected

12 ELEC 412 - Lecture 1112 Low-Pass Filter Realizations

13 ELEC 412 - Lecture 1113 Low-Pass Butterworth Filter Coefficients

14 ELEC 412 - Lecture 1114 Low-Pass Butterworth Filter Attenuation

15 ELEC 412 - Lecture 1115 Low-Pass Linear-Phase Filter Coefficients

16 ELEC 412 - Lecture 1116 Chebyshev-Type Filters

17 ELEC 412 - Lecture 1117 Chebyshev-Type Filters

18 ELEC 412 - Lecture 1118 Chebyshev-Type Filter Response Response for 3 dB ripple Chebyshev LPF

19 ELEC 412 - Lecture 1119 Chebyshev-Type Filter Response Response for 0.5 dB ripple Chebyshev LPF

20 ELEC 412 - Lecture 1120 Low-Pass Chebysev Filter Coefficients – 3 dB Ripple

21 ELEC 412 - Lecture 1121 Low-Pass Chebysev Filter Coefficients – 0.5 dB Ripple

22 ELEC 412 - Lecture 1122 Standard Low-Pass Filter Design The normalized inductors and capacitors (g 1, g 2,..., g N ) are denormalized using: and where C n, L n, are the g n normalized values from the tables


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