Using a Non-radiating Network to Match a Dipole Antenna

Match a short dipole for resonance at 1.4 GHz with an LC matching section. The matched network is modelled using a Spice circuit and S-parameters.

The dipole length is approximately 1/3λ. The matching network consists of a 2.43 pF shunt capacitor and 41.2 nH series inductor and is connected between the source and the dipole.

Figure 1. 3D view of the dipole (left) and the schematic representing the matching network used at the port (right).

Note: The matching SPICE file (Match_circuit.cir) and Touchstone file (Matching.s2p) are included with the example.