Savić, AleksandarAleksandarSavićFreiberger, FabianFabianFreibergerPörtner, RalfRalfPörtnerJacob, ArneArneJacob2021-11-152021-11-152022-06-01IEEE journal of electromagnetics, RF and microwaves in medicine and biology 6 (2): 232-238 (2022-06-01)http://hdl.handle.net/11420/10938A capacitive microwave sensor with homogeneous field distribution is presented. It relies on a high-impedance parallel-plate arrangement and a properly positioned guard electrode to mitigate fringing field effects. The distance between the capacitor plates can be as large as their diameter. Such an arrangement allows permittivity measurements of irregularly shaped objects like individual biological cells. This is demonstrated with a microchip sensor in a microfluidic setup. The calibration requires only a single reference fluid.en2469-7249IEEE journal of electromagnetics, RF and microwaves in medicine and biology20222232238IEEEBiologyCalibrationcomplex permittivityElectrodesElectromagneticsfringing fields decouplingGlassguard electrodesmicrowave sensorsPermittivityRadio frequencysingle biological cell characterizationTechnikA capacitive microwave sensor with guard electrode for single cell characterizationJournal Article10.1109/JERM.2021.3078850Other