Optenni Lab: Multi-antenna matching
Optenni Lab Professional Edition supports simultaneous multiport matching, which has two operation modes:
- Antenna mode: the efficiency of multiple antennas is optimized simultaneously.
- General multiport mode: the suitable transmission S-parameters (e.g. S21) of the system are optimized. This mode is used for RF front ends, duplexers, filters, amplifiers, near field communication, wireless charging etc.
The simultaneous multiport matching is much more complex problem than the single port matching, especially if there is high coupling between the ports of the unmatched system. The challenge emerges mainly from two issues: first, the problem dimension is high because the ports cannot be treated separately; second, the number of candidate topologies increases exponentially with the number of ports. Optenni Lab employs parallelized processing and efficient pre-selection of most promising topologies to significantly reduce to solution time.
The electromagnetic isolation tool provides the worst-case coupling (or best case for general multiport!) between any two ports of the system.
The antenna mode is applied also for antenna array performance optimization, including beamforming synthesis. The antenna array optimization mode requires a separate Antenna Array module.
Optenni Lab can synthesize matching circuit for challenging coupled multiantenna systems, where the matching of all antenna ports must be optimized simultaneously.
The typical optimization goal for multiantenna design is the maximization of the efficiencies, when feeding any of the ports. Optenni Lab can quickly show the sensitivity of the solution with respect to the component tolerances.