Changes

EM.Terrano

637 bytes added, 16:57, 31 August 2016
/* Defining Transmitters & Receivers for Your Propagation Scene */
At the end of an SBR simulation, the button labeled {{key|Show Ray Data}} becomes enabled. Clicking this button opens the Ray Data dialog, where you can see a list of all the received rays at the selected receiver and their computed characteristics.
 
If you want directional radiators for your receiver set, you need to open the Receiver dialog by right-clicking on the receiver set's name in the navigation tree and opening its property dialog from the contextual menu. In the "Radiator Properties" section of this dialog, select the '''User Defined''' radio button. Similar to the case of transmitter set, you can import a '''.RAD''' radiation pattern file using the {{key|Import Pattern}} button. You can also rotate the imported radiation pattern by setting '''Rotation Angles''' different than the default zero values.
If you choose the "user defined antenna" option for your receiver set, it will indeed consist of a basic "Super-Heterodyne Receiver Chain" that starts with a receive antenna, which is used to capture the broadcast signal from the free space, and it ultimately ends in a baseband/IF signal. The receiver's property dialog allows you to define a basic super-heterodyne receiver chain. Click the {{key|Receiver Chain}} button of the Receiver Set dialog to open the receiver chain dialog. As shown in the figure below, you can specify the characteristics of the baseband/IF amplifier, mixer and power amplifier (PA) including stage gains and impedance mismatch factors (IMF) as well as the characteristics of the transmission line segment that connects the PA to the antenna. Note that the transmit antenna characteristics are automatically filled using the contents of the imported radiation pattern data file. The transmitter Chain dialog also calculates and reports the "Total Transmitter Chain Gain" based on your input. When you close this dialog and return to the Transmitter Set dialog, you will see the calculated value of the Effective Isotropic Radiated Power (EIRP) of your transmitter in dBm.
 
EM.Terrano allows you to define a basic '''Heterodyne Receiver Chain'''. Click the {{key|Receiver Chain}} button of the Receiver Set dialog to open the Receiver Chain dialog. As shown in the figure below, you can specify the characteristics of the Low-Noise Amplifier (LNA), mixer and baseband/IF amplifier including stage gains and impedance mismatch factors (IMF) as well as the characteristics of the transmission line segment that connects the antenna to the LNA. Note that the receiving antenna characteristics are automatically filled from using contents of the radiation file. You have to enter values for antenna's '''Brightness Temperature''' as well as the temperature of the transmission line and the receiver's ambient temperature. The effective '''Receiver Bandwidth''' is assumed to be 100MHz, which you can change for the purpose of noise calculations. You also need to enter values for the '''Noise Figure''' of various active devices in the receiver chain. The Receive Chain dialog calculates and reports the "Noise Power" and "Total Receiver Chain Gain" based on your input.
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<td> [[File:PROP22ATerrano L6 Fig15.png|thumb|600pxleft|720px|EM.Terrano's Receiver Chain receiver chain dialog.]] </td>
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