Lateral capacitive transducer

• Movable electrode is displaced in-plane, in parallel to the electrode surface
• Distance between the electrodes does not change
• Common area of the electrodes is varying
• Instantaneous capacity of the transducer is:
  rectangular electrodes of the width h and of the length l, moving in parallel to its length

Lateral capacitive transducer:
Constant voltage mode and constant charge mode
Supposing small signals

where

is the conversion factor

is a common part of length of electrodes in a rest position

Similar analogue circuit representation as in the case of transversal transducer
Difference: negative compliance does not appear