PAGE CONTENTS
Objectives
The target was to develop frequency generation modules that would give the best possible preparation for the future needs for low phase noise applications. This could be HTS/VHTS DSPL based payloads where Phase Noise cancelling cannot be assumed. Also with the ADC/DAC operational frequency moving upwards, the need for low phase noise frequency generation will increase. Another application could be conversion chains when Ka-band feeder traffic is moving to higher frequencies (i.e. Q&V band).
Through the development, three different frequency modules have been designed, developed and verified through breadboard testing. These are:
- FDPLO-VCSO (L-band fixed frequency, low phase noise)
- SPLO-DRO (Ku-band, DRO based, excellent phase noise)
- FDPLO-LMX (Flexible frequency from HF to Ku-band, compact design)
Challenges
The overall target was that the ACE project should prepare Kongsberg Space Electronics to adapt to changing market condition, but with the clear target to establish low phase noise frequency sources. Here also the trade-off between complexity, performance and allowable cost for the system, must be taken into account.
System Architecture
The frequency generator modules can be used in many different architectures as frequency translation is mandatory for almost all kinds of satellite communication equipment. This could be frequency conversions at the input or output of digital processors in beamforming systems. Also with the ADC/DAC operational frequency moving upwards, there is a need for low phase noise frequency sources. Another application could be conversion chains when Ka-band feeder traffic is moving to higher frequencies (i.e. Q&V band).
Plan
The project flow is lined out below:
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System Study and Modules Preliminary Design: Concluded with Baseline Design Review
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Modules Detailed Design & Critical Breadboarding: Concluded with Mid Term Review
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Modules Manufacturing and test: Concluded with Test Review Board / Final Review
Current Status
The work is completed.
Three different frequency generator breadboard modules have been developed and tested.
