US 7,492,165 B2
Position detecting device with a microwave antenna arrangement
Marcus Maier, Stuttgart (Germany); and Thomas Reininger, Wernau (Germany)
Assigned to Festo AG & Co., Esslingen (Germany)
Filed on Jul. 27, 2006, as Appl. No. 11/494,111.
Claims priority of application No. 05017444 (EP), filed on Aug. 11, 2005.
Prior Publication US 2008/0106272 A1, May 08, 2008
Int. Cl. G01R 27/04 (2006.01)
U.S. Cl. 324—644  [607/156] 27 Claims
OG exemplary drawing
 
1. A position detecting device for finding the position of a specimen arranged in a conductive structure on the basis of microwaves, comprising an electrical circuit for producing and/or receiving the microwaves, a microwave antenna arrangement for emitting and/or receiving the microwaves, and a dielectric antenna body with a first pole face and a second pole face for the transmission of microwaves, the antenna body being a component of the microwave antenna arrangement and the electrical circuit being arranged at least partly on the antenna body, wherein the first and/or the second pole face is constituted by an electrically conductive coating.