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Nexxim Simulator >
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Antenna, Dipole

Antenna, Dipole

Netlist Form

An instance of a dipole antenna has the following Nexxim netlist syntax:

Axxx n1 n2 n3 n4 [L=val] [LD=val] [R0=val] COMPONENT=anted

n1 and n3 are the nodes connected to the antenna. n2 and n4 are the nodes to be connected to the LINK element for 2-port operation. The entry COMPONENT=anted identifies the element as an dipole antenna.

**Dipole Antenna Instance Parameters**
Parameter	Description	Units	Default
L	Length of the antenna	Meter	5.0e-3
LD	Ratio of antenna length to diameter	None	3.0
R0	Reference characteristic impedance	Ohm	50

Netlist Example

Aanted1 sigout1 sigout2 L=6e-3 COMPONENT=anted

Notes

1. For main beam calculations, the simulation frequency in MHz should be less than 900/L (meter) for the dipole antenna.

2. The calculated gain is the maximum antenna gain in the main beam direction.

3. When used as a 1-port or a 2-port, the input impedance is calculated across nodes 1 and 3. When used as a 2-port, the second port should be connected to a LINK element for proper analysis.

4. The R0 parameter can be used to modify the antenna calculation of reference impedance for non-50-Ohm systems. R0 is used to convert the antenna’s S-parameters (computed for a 50-Ohm system) to the Y-parameters used by the linear analysis.

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