Course information, announcements, problem sets, exams, etc. will
be made available as the semester progresses.
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LAST UPDATE: January 9, 2017. See Announcements for information.
Test #1: ........................ NO EXEPTIONS. | |
1: | Covers material through, and including, Chapter 7; primarily devoted to Chapters 6 and 7: |
2: | OPEN CLASS TEXT BOOK and CLASS WEBSITE NOTES ONLY; CLOSED OTHER NOTES, HOMEWORKS, TESTS, etc. NO laptops (other for website class notes) and NO computer programs; for calculations, only hand-held calculators. |
Test #2: ............................. NO EXCEPTIONS. | |
1: | Covers material through and including Chapter 12. |
2: | OPEN CLASS TEXT BOOK and CLASS WEBSITE NOTES ONLY; CLOSED OTHER NOTES, HOMEWORKS, TESTS, etc. |
FINAL EXAM: ......................... NO EXCEPTIONS. | |
1: | Covers material through and including Chapter 16. |
2: | OPEN CLASS TEXT BOOK and CLASS WEBSITE NOTES ONLY; CLOSED OTHER NOTES, HOMEWORKS, TESTS, etc. |
Homework#1: Due: ................... (before beginning of the class). | |
1: | Problem ......... |
2: | Problem ........... (a,b,c) |
d: | Are all of the minor lobes of the same level? If not, why not? What needs to be changed, and how, to make them all of the same level? |
e: | Verify parts of the problem using the computer program Arrays. |
Homework 2: Due: ................ (before beginning of class). Must do them ANALYTICALLY; VERIFY them with the Matlab computer program Synthesis. Submit it computer printout from File Option ONLY and associated plots. | |
1: | Problem ............. (Assume beta = 0) |
2: | Problem ................ (Do only length = 5 lambda) |
3: | Problem ....................... (Do only N = 11) |
Homework#3: Due: ...................... (before beginning of class). | |
1: | Problem ............... (length = 5 lambda: use odd samples). Also verify results with associated Synthesis Matlab computer program. Submit computer printout from File Option ONLY and associated plots. |
2: | Problem ................. (N=10: use odd samples). Also verify results with associated Synthesis Matlab computer program. Submit computer printout from File Option ONLY and associated plots. |
3: | Problem ................. Also verify the results using the Matlab Synthesis computer program. Submit it computer printout from File Option ONLY and associated plots. |
Homework#4: Due: ............... (before beginning of class). | |
1: | Problem ................... |
2: | Problem ..................... (do only: length = lambda/4) |
3: | Problem ...............: Do it using calculator/tables in Appendices or your own computer program; not the one from the book. Also verify with Computer Program that accompanies the book. |
4: | Problem ................ Do it using calculator/tables in Appendices or your own computer program; not the one from the book. Also verify with Computer Program that accompanies the book. |
Homework#5: Due: .................. (before beginning of class). | |
1: | Problem ................. |
2: | Problem .................. |
3: | Problem ............... Also plot the magnitude of the reflection coefficient for 0 greater f/fo less than 2 for both 3-section transformers. Compare, in the same graph, with the response of a single section. |
Homework#6: Due: ................... (before beginning of class). | |
1: | Problem ........... |
2: | Problem .................. You do not have to check your answers with the Smith Chart. |
Homework#7: Due: ........................... (before beginning of class). | |
1: | Problem ................. |
2: | Problem ....................... |
3: | Problem ................... [Do POLAR (in dB) plots using any plotting routine, including the one with the program or the one in Chapter 2] |
4: | Problem ................. |
Homework#8: Due: .................. (before beginning of class). | |
1: | Problem ............... [Use the following scale for the normalized amplitude patterns: (Linear plots: 0 to -60 dB; polar plots: 0 to -40 dB)] |
2: | Verify the Yagi-Uda array design of Column 2 (D_{0} = 9.2 dB relative to l/2) of Table 10.6. |
Compute (using 8 modes and feed element of 0.475 lambda) the: | |
A. Directivity (compare with that of Table 10.6). Explain. | |
B. E- and H-plane: | |
a. Normalized amplitude patterns [Use the following scale for the normalized amplitude patterns: (Linear plots: 0 to -60 dB; polar plots: 0 to -40 dB)] | |
b. HPBW (in degrees) | |
c. Front-to-back ratio (in dB) | |
3: | Repeat Problem 2 above for Example 10.3. Use the final dimensions of Example 10.3 (feed = 0.5 lambda) |
[Use the following scale for the normalized amplitude patterns: (Linear plots: 0 to -60 dB; polar plots: 0 to -40 dB)]. | |
4: | Problem .............(use a l/2 feed element). |
Once you have done the design, verify it by computing the: | |
A. Directivity (compare with the specified one). Explain. | |
B. E- and H-plane: | |
a. Normalized amplitude patterns [Use the following scale for the normalized amplitude patterns: (Linear plots: 0 to -60 dB; polar plots: 0 to -40 dB)] | |
b. HPBW (in degrees) | |
c. Front-to-back ratio (in dB) |
P.S. For verification of all the problems, use the Yagi-Uda computer program with 8 modes. |
Homework#9: Due: ................................ (before beginning of class). | |
1: | Repeat Example 11.1 using the Matlab computer program log_perd at the end of Chapter 11 (see Attachment to the email sent for details). |
Submit ALL of the computer plots, ALL of the Summary files for the General Design Information, E-, H- and Custom Planes. |
Homework#10: Due: ..................... (before beginning of class). | |
1: | Problem ............... |
2: | Problem ............ |
Must show ALL the steps of derivation, including integration, to get credit. | |
Verify your derivation using the last column in Table 12.1, by comparing the results of second and third columns regarding the aperture with uniform distribution. |
Homework#11: Due: .................... (before beginning of class). | |
1: | Problem ................. Using MATLAB Program Aperture: |
a. Compute normalized E- & H-plane patterns. | |
b. Directivity (dimensionless and in dB). Compare with the one from Table 12.1 | |
2: | Problem ....................... Using MATLAB Program Aperture: |
a. Compute normalized E- & H-plane patterns. | |
b. Directivity (dimensionless and in dB). Compare with the one from Table 12.1 | |
3: | Problem .................; (mounted on a PEC and not mounted on a PEC). Using MATLAB Program Aperture: |
a. Compute normalized E- & H-plane patterns. | |
b. Directivity (dimensionless and in dB). Compare with the one from Table 12.2 | |
NOTE: Place the computer outputs/printouts at the end of each problem. Do NOT put all the computer programs at the end of the entire homework assignment. |
Homework#12: Due: .................... (before beginning of class). To get credit, you must do them manually; you MUST verify with computer programs. | |
1: | Problem ................ |
2: | Problem ............................ |
2: | Problem ........................... (f = 8.2 GHz). Verify with computer program. |
3: | Problem ........................ |
Homework#13: Due: .......................... (before the beginning of class). | |
1: | Problem .................. |
2: | Problem .................. |
Homework#14: Due: ........................ (before the beginning of class). | |
1: | Problem .................. (replace derive by compute in the statement of the problem) |
2: | Problem ......... Compute the: |
a. Physical and effective radii (in cm) of the circular patch. | |
b. Input impedance of the circular patch at the edge of the effective radius rim. | |
c. Radial distance (in cm) so that the input impedance of the circular patch is 75 ohms. | |
Also verify Parts (a), (b) and (c) using the computer program Microstrip. |
Homework#15: Due: ...........................(before the beginning of class). | |
1: | Problem ...... |
2: | Problem ............... |
3: | Problem ............ |
4: | Problem ................... |
5: | Problem ............... |