SPIRAL IMPEDANCE STRUCTURE

Organization Name

International Business Machines Corporation

Inventor(s)

Frank Robert Libsch of White Plains NY (US)

VENKAT K. Balagurusamy of Airmont NY (US)

SPIRAL IMPEDANCE STRUCTURE

This abstract first appeared for US patent application 18341881 titled 'SPIRAL IMPEDANCE STRUCTURE

Original Abstract Submitted

An impedance sensing structure is provided and includes a dielectric layer, a spiral electrode pair forming a dual spiral channel on the dielectric layer and having an inlet portion at a central region of the dual spiral channel and an outlet portion at an end of the dual spiral channel, inlet and outlet elements and sensing circuitry. The inlet and outlet elements are coupled with the inlet and outlet portions, respectively, for directing fluid or gas to flow through the dual spiral channel. The sensing circuitry is electrically connected with the spiral electrode pair and configured to sense the particles in the fluid or gas in accordance with an impedance of the spiral electrode pair and the fluid or gas flowing through the dual spiral channel.