Abstract:
In this study, an optical pressure sensor is designed to sense
a force on the scale of 100 nN. For this purpose, a very
narrow radio frequency band-pass filter is designed and
modeled to detect the optical pressure force. The center
frequency of the filter is fixed in L-band. Thus, by applying
an external force, the circuit’s characteristics such as
scattering parameters and the center frequency of the filter
is changed. That is the method particularly employed to
sense a very low scale optical pressure. In this study, the
open-stub technique is used to design the radio frequency
filter and results are compared with the lumped elementbased circuit models. Also, the circuit design is simulated in
COMSOL Multiphysics, and the scattering parameters are
studied. Finally, the circuit is optimized for the specific aim
using Advanced Design System software.