The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 27, 2007
Filed:
Dec. 09, 2005
Mary K. Koenig, Seattle, WA (US);
Mary K. Koenig, Seattle, WA (US);
Lumera Corporation, Bothell, WA (US);
Abstract
Apparatus and associated systems for transmission of signals within a wide bandwidth (e.g., from DC toGHz and above) include a conduction path and ground structures in an arrangement to provide a smooth transition between propagation in a coplanar waveguide mode and propagation in a microstrip waveguide mode. Some embodiments may be provided without vias, for example, by providing low impedance connections between ground structures on different layers, where the connections are made external to a medium between the layers. Some embodiments may feature a monotonically decreasing gap between a signal conduction path and a coplanar ground structure. Such embodiments may be used, for example, to provide a low loss, wide bandwidth interface between a coaxial transmission line and a microstrip transmission line. As another example, one or more such structures may be used in an electro-optic modulator to control an optical signal.