Creating the Model
Create the model in CADFEKO. Define any ports and sources required for the model. Specify the operating frequency or frequency range for the model.
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Define the following variables.
- freq = 1e9 (The operating frequency.)
- fmin = 0.4e9 (The minimum frequency.)
- fmax = 1.5e9 (The maximum frequency.)
- lambda = c0/freq (The frequency for free space wavelength.)
- L0 = 0.2375 (Length of the reflector element in wavelengths.)
- L1 = 0.2265 (Length of the driver element in wavelengths.)
- L2 = 0.223 (Length of the first director element in wavelengths.)
- L3 = 0.223 (Width of the second director element in wavelengths.)
- S0 = 0.3 (Spacing between the reflector and driver element in wavelengths.)
- S1 = 0.3 (Spacing between the driver element and first director element.)
- S2 = 0.3 (Spacing between directors.)
- r = 0.1e-3 (Wire radius in mm.)
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Create the dipole (driven element) of the Yagi-Uda antenna.
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Create the reflector of the Yagi-Uda antenna.
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Create the first director of the Yagi-Uda antenna.
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Create the second director of the Yagi-Uda antenna.
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Set the incident power as follows:
- Select Incident power (transmission line model).
- Source power (Watt): 25
- Real part of Z0: 50
- Set the continuous frequency range from fmin to fmax.