Pencil Beam Antenna
This is a non-physically realizable antenna provided for analytical purposes. Antenna beamwidth is computed on the basis of user-supplied values for main lobe and back lobe gains. The main lobe and back lobe gain values are constant. The beamwidth is computed from the main and back lobe values, such that the integrated gain over a sphere enclosing the antenna is 4
.
This antenna uses a polar coordinate system.
| Parameter | Description |
|---|---|
| Design Frequency |
The frequency of the antenna. For an embedded antenna on a receiver, transmitter or radar, this value corresponds to the Frequency entered on the Model Specs tab for the transmitter or receiver and the Transmitter Specs tab for the Radar. For an antenna linked to a receiver, transmitter, or radar, the Antenna Design Frequency value gets overridden by the Frequency value set on the Model Specs tab for the transmitter or receiver, and the on the Transmitter Specs tab for the Radar. However, when computing the antenna's gain matrix (or a link budget, etc.) from one of the objects linking to the antenna, that other object's frequency settings override the antenna's Design Frequency setting. |
| Main-lobe Gain | A constant value across the main lobe beamwidth of an antenna (default = 40.000 dB). |
| Side-lobe | The gain of the antenna outside the main lobe beamwidth (default = -3.000 dB). |
| Beamwidth | This value is automatically computed and displayed in this read-only field. |
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