Frequency Synthesisers

Giastar has extensive experience of many types of frequency synthesizer: indirect (phase locked), with both integer and fractional divisors; analogue direct; digital direct (DDS) and hybrid combinations of these technologies.

Frequency synthesiser design can be particularly challenging. It is a discipline requiring a good understanding of RF circuitry, low-frequency analogue circuitry, low-noise design methods, control systems, digital design and EMC. The tradeoffs can be complex. Local oscillator quality frequently limits the performance of a receiver or transmitter, so the correct specification and competent design of a synthesiser can be vital.

Most of the projects featured on this site included integral synthesisers, however the following are of particular interest:



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