Modeling of differential line referenced to a meshed ground plane

Meshed power and ground planes are quite common in flexible printed circuit board (PCB) and also found primarily in the multi-layered low temperature co-fired ceramic substrate. Transmission characteristics of a differential line referenced to a meshed ground plane is investigated in this work. The ABCD parameters for the differential line referenced to a meshed ground plane are described and an equivalent transmission line model in terms of the effective mode characteristic impedances and the effective mode propagation constants is proposed. The validity of the approach is confirmed through comparison with different test examples.