On-chip integrated mixer with balun circuit and method of making the same
US6653885B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 30, 2001 |
| Grant date | Nov 25, 2003 |
| Priority date | — |
| Expiry date | Oct 30, 2021 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03D2200/0088
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A radio frequency (RF) mixing device wherein RF core circuit elements requiring signal splitting are provided with one or more signal splitting element(s) (“balun(s)”) integrated on-chip with the core RF circuit elements. The RF mixing device comprises one or more RF circuit element(s) integrated on a common substrate with one or more balun(s), wherein the common substrate is an insulating substrate further provided with associated silicon-based CMOS circuitry formed in a thin, highly crystalline silicon layer formed on the insulating substrate. The insulating substrate is selected from transparent crystalline materials such as sapphire, spinel, etc. The common substrate is preferably ultrathin silicon-on-sapphire.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.