Hearing assistance coplanar waveguide
US9462396B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 9, 2013 |
| Grant date | Oct 4, 2016 |
| Priority date | — |
| Expiry date | Apr 12, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R2225/59
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Disclosed herein, among other things, are methods and apparatuses that provide a manufacturable RF transmission line to go through the bend area of a flexible circuit to be used in a compact design, such as in a compact hearing aid design. One aspect of the present subject matter relates to using multiple inner layers of the flexible circuit to route RF transmission. By not using outer layers, the RF transmission line will be less susceptible to delamination from the polyimide dielectric layer. One aspect of the present subject matter relates to choosing copper transmission line to have dimensions that allow for narrower transmission lines with good RF return loss. The copper transmission line dimensions also allow for manufacturing in a standard process without adding extra cost.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.