Compact non-linear HBT array
US6803643B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 30, 2002 |
| Grant date | Oct 12, 2004 |
| Priority date | — |
| Expiry date | Sep 30, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10D89/10
Abstract
HBTs in an HBT array are configured non-linearly, i.e., staggered, thus reducing the impact of thermal coupling between adjacent HBTs in the array and bypassing the minimum collector-to-collector spacing design rules required for a linear HBT array. Using this non-linear configuration, adjacent HBTs are misaligned with respect to each other. In a preferred embodiment, adjacent HBTs in the array are configured in a corner-to-corner arrangement, and in a more preferred embodiment, the collectors of the adjacent HBTs are aligned or are common, i.e., the collector of one HBT is shared with the collector of an adjacent HBT. In a most preferred embodiment, the HBTs are ballasted in an emitter-ballast/base-ballast pattern (referred to as “mixed ballasting” or “dual-ballasting”).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.