Abstract
Function signal generator is the indispensable tool of a variety of tests and experiments, broadly applied at the electronics electric circuit, communication, measure, auto control system and teaching experiment etc. With the development of economy and technology, more and more design methods of function signal generator, more and more advanced design techniques.The corresponding testing instrument and test method is put forward higher request, so the
development of function signal generator is of great significance.
Current function signal generator is used most by division of components reliability, big volume and low accuracy.This function signal generator adopts the microcontroller as control core,with the chip of AD9833 to produce waveform signal,the function signal generator is composed of the Signal disposal, the power amplifier circuit, the amplitude of measurement etc. The article on the function signal generator design methods are reviewed, introducing the development trend of the function signal generator, power amplifier circuit and detection technology,focuses on the system power amplifier module and amplitude measurement modules design is discussed and studied. This design has simple structure, compact structure, the output signal frequency stability, superior performance, etc.
Keywords: Function signal generator; Development trend; Power amplifiers; Detection technology; Amplitude measurement