TY - GEN
T1 - Sensitivity Optimization of Microwave Biosensors
AU - Voglhuber-Brunnmaier, Thomas
AU - Wagner, Lisa
AU - Diskus, Christian
AU - Jakoby, Bernhard
AU - Brandl, Martin
PY - 2016/9
Y1 - 2016/9
N2 - A microwave biosensor, suitable for the detection of dielectric overlays, formed by bonding of bio-molecules to a functionalized
substrate, is investigated. The sensor consists of a resonant coupled split-ring configuration in microstrip technology. An analytical
model for the sensor structure is developed and compared to measurement results. The complexity of the model is further reduced
and equations for resonance frequency shift and Q-factor change are determined from which the sensitivity and the detection limit
can be estimated. It is found that higher operating frequencies facilitate higher sensitivity and that the electrical conductivity of the
sample dominates the Q-factors and therefore the achievable accuracy.
AB - A microwave biosensor, suitable for the detection of dielectric overlays, formed by bonding of bio-molecules to a functionalized
substrate, is investigated. The sensor consists of a resonant coupled split-ring configuration in microstrip technology. An analytical
model for the sensor structure is developed and compared to measurement results. The complexity of the model is further reduced
and equations for resonance frequency shift and Q-factor change are determined from which the sensitivity and the detection limit
can be estimated. It is found that higher operating frequencies facilitate higher sensitivity and that the electrical conductivity of the
sample dominates the Q-factors and therefore the achievable accuracy.
UR - http://www.scopus.com/inward/record.url?scp=85009944190&partnerID=8YFLogxK
U2 - 10.1016/j.proeng.2016.11.232
DO - 10.1016/j.proeng.2016.11.232
M3 - Conference proceedings
VL - 168
T3 - Procedia Engineering
SP - 634
EP - 637
BT - Proceedia Engineering
ER -