Patent · US Active

Multi-band aggregated spectrum receiver employing frequency source reuse

US8583170B2 · kind B2 · utility

109Cited by

2References

20Claims

0Family size

Assignee

Telefonaktiebolaget LM Ericsson (Publ) · SE

Inventors

Lars Sundström · Södra Sandby, SE
Stefan Andersson · Flyinge, SE
Roland Strandberg · Furulund, SE

Key dates

Filing date	Nov 3, 2009
Grant date	Nov 12, 2013
Priority date	—
Expiry date	Sep 23, 2031

Classification

Technology area (CPC H)Electricity
CPC primaryH04B1/0082
WIPO fieldTelecommunications
WIPO sectorElectrical engineering

Abstract

Efficient carrier aggregation is enabled in a receiver employing a single frequency source, and dividing the frequency source by different frequency dividing factors to generate two or more RF LO frequencies. Received signals are down-converted to intermediate frequencies by mixing with the respective RF LO frequencies. By utilizing only a single high frequency source, embodiments of the present invention avoid spurious and injection locking issues that arise when integrating two or more frequency sources, and additionally reduce power consumption as compared to a multiple frequency source solution.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.