M
Member
Weighing options for a design, recording the trade-offs here.
Common pitfalls:
1）Microstrip radiates and is easy to tune, but the effective permittivity is hard to predict without field solving.
2）Stripline is fully shielded and has a well-defined impedance, at the cost of layers and via transitions.
3）For anything above a few GHz with tight EMI requirements, stripline or grounded coplanar usually wins.
4）GCPW is a good middle ground: mostly shielded, tunable, and only needs one adjacent ground layer.
Obviously it depends on the constraints.
Common pitfalls:
1）Microstrip radiates and is easy to tune, but the effective permittivity is hard to predict without field solving.
2）Stripline is fully shielded and has a well-defined impedance, at the cost of layers and via transitions.
3）For anything above a few GHz with tight EMI requirements, stripline or grounded coplanar usually wins.
4）GCPW is a good middle ground: mostly shielded, tunable, and only needs one adjacent ground layer.
Obviously it depends on the constraints.
