Invention Grant
- Patent Title: Spurious-free flexible frequency converter and a satellite communication repeater architecture
- Patent Title (中): 无杂散的灵活变频器和卫星通信中继器架构
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Application No.: US12143166Application Date: 2008-06-20
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Publication No.: US07941093B2Publication Date: 2011-05-10
- Inventor: Jörgen Nilsson
- Applicant: Jörgen Nilsson
- Applicant Address: SE Göteborg
- Assignee: RUAG Space AB
- Current Assignee: RUAG Space AB
- Current Assignee Address: SE Göteborg
- Agency: Venable LLP
- Agent Eric J. Franklin
- Priority: EP07110640 20070620
- Main IPC: H04B1/00
- IPC: H04B1/00 ; H04B17/00 ; H04B1/10 ; H04B15/00 ; H04B1/26 ; H04B1/18
Abstract:
A method for frequency conversion within a satellite-based repeater system. An uplink radio frequency signal having a frequency fRF is received. A first and at least a second local oscillator signal having frequencies fL01 and fLO2, respectively, is generated. The uplink signal is mixed at a first frequency conversion stage with the first local oscillator signal to generate an intermediate signal having a frequency fMF. The intermediate signal is mixed at a second frequency conversion stage with the at least second local oscillator signal to generate a downlink signal having a frequency fIF. The generation and mixing of the signals are performed such that: fLO1 and fLO2>fRF and fIF fMF=fLO1−fRF, and fIF=fLO2−fMF.
Public/Granted literature
- US20080318522A1 SPURIOUS-FREE FLEXIBLE FREQUENCY CONVERTER AND A SATELLITE COMMUNICATION REPEATER ARCHITECTURE Public/Granted day:2008-12-25
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