Ministry of higher and secondary special education of the republic of uzbekistan the ministry for development of information

Default Rectangular Waveguide 
View MATLAB Command
 
Create a rectangular waveguide using default dimensions. Display the 
waveguide. 
wg = waveguide 
wg =
waveguide with properties: 
Length: 0.0240 
Width: 0.0229 
Height: 0.0102 
FeedWidth: 6.0000e-05 
FeedHeight: 0.0060 
FeedOffset: [-0.0060 0] 
Tilt: 0 
TiltAxis: [1 0 0] 
Load: [1x1 lumpedElement] 

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36 
show(wg) 
Fig.5.3. Waveguide antenna element with parameter FeedWidth: 6.0000e-05 
Radiation Pattern of WR-650 Rectangular Waveguide 
View MATLAB Command
 
Create a WR-650 rectangular waveguide and display it. 
wg = waveguide('Length',0.254,'Width',0.1651,'Height',0.0855,... 
'FeedHeight',0.0635,'FeedWidth',0.00508,'FeedOffset',[0.0635 0]); 
show(wg) 
Fig.5.4. Waveguide antenna element with parameter FeedWidth',0.00508 

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Plot the radiation pattern of this waveguide at 1.5 GHz. 
figure 
pattern(wg,1.5e9) 
Fig. 5.5. Radiation pattern of waveguide. 
Task to perform.
Each student must study such horn antenna properties as gain, radiation 
pattern, azimuth and current conduction. Prepare reports and submit them. The 
operating frequency of the antenna is determined by the following formula 
F=10N+1500 (MHz). Here F is the frequency of the antenna, N is the student's 
serial number according to the journal. 
 
 

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38 
Laboratory work # 6 
Theme: Study of parameters of 2G networks 
Purpose of work: Study the principle of operation of second generation 
networks, the main components and architecture of the network structure. 
Definition 
Global system for mobile communication (GSM) is a globally accepted 
standard for digital cellular communication. GSM is the name of a 
standardization group established in 1982 to create a common European mobile 
telephone standard that would formulate specifications for a pan-European 
mobile cellular radio system operating at 900 MHz. It is estimated that many 
countries outside of Europe will join the GSM partnership. 
Overview 
This tutorial provides an introduction to basic GSM concepts, 
specifications, networks, and services. A short history of network evolution is 
provided in order set the context for understanding GSM.