Radio frequency tuner
US7610033B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 17, 2006 |
| Grant date | Oct 27, 2009 |
| Priority date | — |
| Expiry date | Jul 2, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B1/0075
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A radio frequency tuner is provided having inputs for receiving signals in common or overlapping frequency ranges from distribution networks. Each input is connected to a respective first converter, for example performing upconversion to a first intermediate frequency above the RF frequency ranges of the incoming signals. The first frequency changers are arranged to be active one at a time. The outputs of the first frequency changers are supplied to a second frequency changer which performs downconversion on the output signal of the active first converter to convert a selected channel from one of the distribution networks to a second intermediate frequency. Sufficient RF isolation may therefore be provided without requiring mechanical switching components such as RF relays.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.