New Portable Signal Generator
GED completed development of a portable RF Signal Generator Ranging from 1 to 2 GHz with 100kHz Resolution. The generator is fully
PC-programmable and features programmable pre-set frequencies, amplitude control, disable outputs, automatic reference detect and many other features making it extremely versatile.
This is the newest member of our diverse family of frequency sythesizers.
Frequency synthesis is the generation of a frequency or frequencies which are exact multiples of a reference frequency. Usually the reference frequency is very precise
and the synthesized frequencies are selectable over some range of whole-numbered multiples of a submultiple of the reference; that is the reference frequency is given by:
ƒOUT = nƒREF ⁄ M
where n and M are integers, n varies from Nmin to Nmax and M is constant. The reference frequency, ƒREF, is typically a
precision frequency source such as a crystal oscillator or a rubidium reference.
There are basically three different types of synthesizers: direct, indirect and direct digital synthesis (DDS). Direct synthesis is when the reference signal is manipulated
by summing and multiplying with mixers, dividers and multipliers. Indirect synthesis is when a voltage controlled oscillator is phase locked to a reference. DDS is when a signal is
digitally constructed and processed through an digital-to-analog converter. GED offers all three types of synthesizers.
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