July:
30: Class #1
August:
27: Class #2
September:
1: Class #3
3: Class #4
8: Class #5
10: Class #6
15: Class #7 - Last Class
Thursday, July 30, 2009
Welcome to Semester I of Session 2009/2010
There will be a class on Thursday 30 July, 2009 at MRL.
The topic covered will be on microwave and tropospheric propagation. Read up on on this topic before class.
The topic covered will be on microwave and tropospheric propagation. Read up on on this topic before class.
Tuesday, March 10, 2009
Assignments S-parameters
In preparation for the tests, do these problems.
Pg. 245 of Pozar's 2nd Edition or Pg. 217 of 3rd Edition: # 4.5, 4.6, 4.8, 4.9, 4.16. Submit only 4.9 and 4.16, by 23 March to WARAS.
Pg. 245 of Pozar's 2nd Edition or Pg. 217 of 3rd Edition: # 4.5, 4.6, 4.8, 4.9, 4.16. Submit only 4.9 and 4.16, by 23 March to WARAS.
Sunday, January 11, 2009
Class on 13/01/09
The class on 13/01 will be conducted by Dr. Yusof. He will touch on microstrips.
Our propagation class will continue 27/01 which falls on CNY holiday. The replacement class will be decided soon.
Our propagation class will continue 27/01 which falls on CNY holiday. The replacement class will be decided soon.
Monday, January 5, 2009
Direct and reflected wave propagation
Electromagnetic energy at microwave frequencies generally propagate in a straight line. It direction changes when it traverses a medium of a different refractive index than the one it is in. Another factor that can divert its direction is when it is reflected or scattered when it impinges on an electrically smooth or rough surface.
When the transmitter and receiver antennas are at heights Ht and Hr above ground and separated by distance D, the signal received would be a resultant of the direct wave and reflected wave. Show and convince yourself that the differential distance between the reflected and direct wave is dependent on the heights of the antennas and the distance. Derive the relationship.
From the result, what would be the phase of the resultant electric field. Explain why the result is as such.
When the transmitter and receiver antennas are at heights Ht and Hr above ground and separated by distance D, the signal received would be a resultant of the direct wave and reflected wave. Show and convince yourself that the differential distance between the reflected and direct wave is dependent on the heights of the antennas and the distance. Derive the relationship.
From the result, what would be the phase of the resultant electric field. Explain why the result is as such.
Wednesday, December 31, 2008
Welcome to Semester II of the 2008/09 Session
As most of you are aware, class started yesterday, 30 December, 2008. For those of you who did not make it, please consult your classmates.
As agreed, class will meet every Tuesdays, from 11:15 to 14:00. The meeting place would be the MRL room at the FKEE complex.
The course content will be distributed at the next class.
For the first class reading assignment, visit this site for a good discussion on VHF/UHF/microwave propagation. This article is just a primer and you are expected to read the reference text as discussed in class.
BTW, as this is posted on the last day of the solar year, I wish everyone a happy new year.
As agreed, class will meet every Tuesdays, from 11:15 to 14:00. The meeting place would be the MRL room at the FKEE complex.
The course content will be distributed at the next class.
For the first class reading assignment, visit this site for a good discussion on VHF/UHF/microwave propagation. This article is just a primer and you are expected to read the reference text as discussed in class.
BTW, as this is posted on the last day of the solar year, I wish everyone a happy new year.
Sunday, October 19, 2008
Network Analyser Demo at WARAS
I hope everyone had a good time during the demo. You may need to use the equipment more to fully appreciate its usefulness.
You can visit here to download the photos.
Good luck in the forthcoming finals.
Wednesday, September 17, 2008
FIELD EFFECT TRANSISTOR AMPLIFIER DESIGN
Tuesday, September 16, 2008
www.microwaves101.com
Check out this website. It has lots of interesting articles on rf and microwaves.
Thursday, September 11, 2008
Assignment
Read Chapter 4 of Pozar's book (3rd Ed) and do the following:-
Qns. 4.1, 4.2, 4.3, 4.4, 4.6, 4.7, 4.8, 4.9, 4.10.
Submit by Monday Evening 5.00pm
GL
Qns. 4.1, 4.2, 4.3, 4.4, 4.6, 4.7, 4.8, 4.9, 4.10.
Submit by Monday Evening 5.00pm
GL
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