© Skyarna Ltd 2012

 

RF Systems

 

Previous work conducted by Skyarna’s partners has been for commercial customers or classified military projects. Consequently information on this work has not been published. However, the projects have involved the following:

 

• RF system design for E-band communications.

 

• System and hardware design for a frequency converter to translate a UMTS mobile communication system to a military frequency band. A thorough understanding of UMTS W-CDMA was required including the factors effecting signal degradation (error vector magnitude).

 

• A radar EW study to determine how to achieve a broad frequency range, low cost, coherent, expendable radar decoy using commercially available components. A system architecture was developed combining analogue RF components, analogue to digital/digital to analogue converters, and an FPGA. The system was capable of recording and modifying a radar signal prior to re-transmission in order to decoy an attacking radar. An understanding of A/D and D/A conversion and signal sampling was required.

 

• A feasibility study for a mixed signal RFIC/FPGA based 2 to 20 GHz coherent electronic attack system using 2 GHz sub-sampling. This novel system utilised SiGe bipolar integrated circuit technology to generate coherent radar jamming signals.

 

• Design of a base band to 5 GHz IF converter board using commercial ICs for a 65 GHz communications transceiver.