EE  409 / E01 Fall 2003
Network Analysis and Synthesis
Professor: Ho
Submitted By:
Andrew Buettner
Lab #1: 10^{th} Order Passive Band Pass Filter
Table Of Contents
1) Cover Page 1
2) Table of Contents 2
3) Objective 3
4) Components Used 3
5) Procedures 3
6)
Lab Data / Results 3
1) Diagram 1 3
2) Diagram 2 4
3) Table 1 4
4) Table 2 4
7) Conclusions 4
8) Attachments 4
Objective
The objective of this lab is to design a 10^{th} order band pass filter using a 5^{th} order low pass filter as a base. The filter will be designed using a normalized Chebyshev template then a table will be used to convert the system form a low pass filter to a band pass filter.
Components Used
1) PC With CircuitMaker® installed.
Procedures
1) Using a Chebyshev filter as a prototype, design a 10^{th} order band pass filter with a center frequency of 10KHz and a bandwidth of 2KHz and Z_{o} of 1KW.
Lab Data / Results
1) Diagram 1: Filter Frequency Response
2) Diagram 2: Filter Schematic
3) Table 1: L, C, R Values

1 
2 
3 
4 
5 

L: 
67.9mH 
2.23mH 
144mH 
1.94mH 
122mH 
C: 
3.73nF 
114nF 
1.75nF 
131nF 
2.07nF 
R: 
1KW 
1KW 
 
 
 
4) Table 2: Filter Response Data:
Ripple 
Bandwidth 

.576dB 
2.01KHz 
Conclusions
This lab has demonstrated that a 10^{th} order band pass filter can be designed from a 5^{th} order design. Here we used the Chebyshev filter as a template, however, any filter bas can be used if the proper transforms and scaling factors are applied. The primary difficulty with this lab was realizing that the scaling factors were in radians/second. Therefore, I had to apply an additional 2p scaling factor. After several attempts, I got the circuit functioning properly. The inconsistencies in the bandwidth are most likely a result from inaccuracy of the markers. The inconsistency in the ripple, which should be <.5dB is because the simulation reported a gain at certain frequencies which is not directly possible. Using 1 instead of the reported maximum yields a .490dB ripple in the passband. Overall, I believe that this lab was successful.
Attachments
Original lab handout
Original lab data
Calculations