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 |
This is the frequency of the antenna. The antenna design frequency is independent of the operational frequency of a transmitter, receiver, or radar. Changing the frequency of a transmitter, receiver, or radar does not update an embedded antenna's design frequency, nor vice versa. The design frequency is solely used at antenna configuration time to compute the antenna size from its max gain or beamwidth settings. A mismatch between signal frequency and antenna design frequency typically causes performance degradation. |
| 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. |