A 0.62-10GHz CMOS Dielectric Spectroscopy System for Chemical/Biological Material Characterization Conference Paper

abstract

• A CMOS wideband dielectric spectroscopy system is proposed for chemical and biological material characterization. The complex permittivity detection is performed using a configurable harmonic-rejecting receiver capable of indirectly measuring the complex admittance of sensing capacitor exposed to the material-under-test (MUT) and subject to RF signal excitation with a frequency range of 0.62-10GHz. The sensing capacitor is embedded in a voltage divider topology with a fixed capacitor and the relative variations in the magnitude and phase of the voltages across the capacitors are used to find the real and imaginary parts of the permittivity. The sensor achieves an rms permittivity error of less than 1% over the entire operation bandwidth. 2014 IEEE.

name of conference

• 2014 IEEE MTT-S International Microwave Symposium (IMS2014)

authors

• Entesari, Kamran

published proceedings

• 2014 IEEE MTT-S INTERNATIONAL MICROWAVE SYMPOSIUM (IMS)

author list (cited authors)

• Bajestan, M. M., Helmy, A. A., Hedayati, H., & Entesari, K.

citation count

• 18

complete list of authors

• Bajestan, Masoud Moslehi||Helmy, Ahmed A||Hedayati, Hajir||Entesari, Kamran

publication date

• June 2014

publisher

• Institute of Electrical and Electronics Engineers (IEEE)  Publisher

published in

• IEEE MTT-S International Microwave Symposium digest. IEEE MTT-S International Microwave Symposium  Journal

keywords

• Chemical Sensor
• Cmos
• Dielectric Constant
• Permittivity Detection
• Spectroscopy

Digital Object Identifier (DOI)

• 10.1109/mwsym.2014.6848338

International Standard Book Number (ISBN) 13

• 9781479938698

start page

• 1

end page

• 4

URL

• http%3A%2F%2Fdx.doi.org%2F10.1109%2Fmwsym.2014.6848338