A probe card assembly, according to some embodiments of the invention, can comprise a tester interface configured to make electrical connections with a test controller, a plurality of electrically conductive probes disposed to contact terminals of an electronic device to be tested, and a plurality of...http://www.google.de/patents/US7729878?utm_source=gb-gplus-sharePatent US7729878 - Air bridge structures and methods of making and using air bridge structures