Frequency translating repeater with low cost high performance local oscillator architecture
US7187904B2 · kind B2 · utility
55Cited by
7References
21Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 3, 2005 |
| Grant date | Mar 6, 2007 |
| Priority date | — |
| Expiry date | Jun 3, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B7/12
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A frequency translating repeater (120) for use in a time division duplex (TDD) radio protocol communications system includes local oscillator (LO) circuits (210, 310, and 410) to facilitate repeating by providing isolation, reduced phase noise, reduced pulling, and the like. Tunable LOs (441, 442) can be directly coupled to down-converters (413, 414) and up-converters (426, 427) for increased isolation, reduced phase noise, less stringent frequency accuracy, and a reduced potential for pulling.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.