High-speed feedthrough having a stair-like shape transmission line formed through a multi-layer substrate
US8847698B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 21, 2011 |
| Grant date | Sep 30, 2014 |
| Priority date | — |
| Expiry date | Oct 16, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01L2924/15174
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A high-speed feedthrough (HSFT) is disclosed for transmitting a signal having a highest frequency of at least 10 GHz between first and second locations separated by a vertical distance of at least approximately half of the shortest transmitted wavelength, and separated by a horizontal distance. A substrate structure includes multiple stacked layers. An RF transmission line is connected through the structure between the first and second locations for transmitting the signal. The RF transmission line comprises a series of sequentially connected horizontal conductors having lengths less than half of the effective wavelength and vertical conductors having heights less than one quarter of the effective wavelength, thereby spanning the horizontal and vertical distance between the two locations in a stairs-like shape through the structure's layers. Each conductor's geometry may deviate from standard 50 ohm buried strip lines and is optimized for complete 3-dimensional structure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.