In the latter structure vertical vias are removed, which results in different surface wave properties in the two ground planes. Fig. 7.1: Geometry of two artificial ground planes: (a) a mushroom-like ...

On the surface, it might seem like 5GHz is the better ... Bluetooth, and NFC use radio waves for communication, much like actual radio and old TVs with antennas of yesteryear.

Sound waves can reflect off surfaces. We hear reflected sound as ... The sound made by a band is very different in an empty concert arena than when it is full. Parts - cochlea and semi-circular ...