The present invention provides a circuit and method for a fringing capacitor.
The fringing capacitor includes at least two conductor layers spaced apart from
each other. Each conductor layer includes at least two portions. The portions include
odd ones alternating with even ones. Adjacent odd ones and even ones of the portions
are spaced apart. The odd ones of the portions on a first one of the conductor
layers are configured to substantially overlay the odd ones of the portions on
an adjacent one of the conductor layers. The even ones of the portions on the first
one of the conductor layers are configured to substantially overlay the even ones
of the portions on the adjacent one of the conductor layers. The odd ones of the
portions on the first one of the conductor layers are electrically coupled together
and to the even ones of the portions on the adjacent one of the conductor layers,
thereby defining a first electrode. The even ones of the portions on the first
one of the conductor layers are electrically coupled together and to the odd ones
of the portions on the adjacent one of the conductor layers, thereby defining a
second electrode. A dielectric is interposed between the first and second electrodes.
A guardband is spaced from the first and second electrodes.
