Low temperature co-fired ceramic double balanced mixer
US7027795B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 18, 2003 |
| Grant date | Apr 11, 2006 |
| Priority date | — |
| Expiry date | Jun 10, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03D9/0633
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A double balanced mixer with improved isolation between the LO and RF frequency signals. The mixer has a local oscillator balun, an intermediate frequency balun and an RF balun. The baluns are located on inner layers of a substrate comprised of low temperature co-fired ceramic. The baluns are formed from spiral lines that form windings. The windings are coupled between adjacent layers. The local oscillator balun is connected to the intermediate frequency balun. A diode ring is connected between the RF balun and the intermediate frequency balun. The diode ring is mounted to a top layer. Several vias extend through the substrate. The vias provide an electrical connection between the baluns and the diode ring.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.