US 10,890,603 B2
Advanced radio frequency sensing probe
Alexander Sappok, Cambridge, MA (US); Roland Smith, III, Medford, MA (US); and Leslie Bromberg, Sharon, MA (US)
Assigned to CTS Corporation, Lisle, IL (US)
Filed by Filter Sensing Technologies, Inc., Malden, MA (US)
Filed on Dec. 14, 2018, as Appl. No. 16/220,208.
Application 16/220,208 is a division of application No. 14/535,398, filed on Nov. 7, 2014, granted, now 10,168,358.
Prior Publication US 2019/0204355 A1, Jul. 4, 2019
Int. Cl. G01R 1/067 (2006.01); G01N 22/00 (2006.01)
CPC G01R 1/06772 (2013.01) [G01N 22/00 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A radio frequency probe system for an emission control device including a microwave resonant cavity defining a housing for a particulate filter or catalyst, comprising:
a coaxial cable having an inner conductor disposed in the microwave resonant cavity of the emission control device and surrounded by an inner dielectric material, the inner dielectric material covered by a conducting coaxial braid, and the conducting coaxial braid covered by an outer insulating jacket;
a conductive outer sleeve in direct electrical contact with the coaxial braid; and
an ancillary sensor wrapped around the inner conductor and disposed in the microwave resonant cavity of the emission control device.