The Classification and Functions of Signal Generator

Published:2011/6/20 5:07:00 Author:Amy From:SeekIC

According to generated signal type, the signal generator can be classed into sine wave signal generator, function generator, pulse generator, a random signal generator, and dedicated signal generator. Sine wave signal generator can provide the most basic sine wave signal which can be used as reference frequency and reference amplitude signal and applied in gain and sensitivity testing and calibration of instruments. Common high frequency signal generator and standard signal generator are all classified into this category. Function signal generator can produce various function wave, typically are square wave, sine wave, triangle wave, saw tooth wave, pulse and so forth. General speaking, the working frequency of function signal generator is not much high usually with upper limit several MHZ to twenty MHZ and the lower limit is can be dropped under 0.1hz. It has wide applications such as in scientific experiments, product development, production and maintenance, IC chip testing and so on. Pulse signal generator and random signal generator are usually used in professional condition. Specialized signal generator is to produce specific format signal instrument, such as common TV signal generator, stereo signal generator and so forth.

According to traditional working frequency band, it can be classified into Ultra-low frequency signal generator, low frequency signal generator, high-frequency signal generators, and microwave signal generator. Ultra-low frequency signal generator are usually used in specific professional area like audio area, high frequency signal generator in telecommunication and measurement area and microwave signal generator in radar area.

According to frequency generation mechanism, it can be classified into LC oscillator signal generator, voltage controlled oscillation signal generator, and frequency synthesized signal generators. According to power output, it can be classified into simple signal generator, the standard signal generator and power generator. The high-end signal generator includes vector signal and the baseband signal which usually applied in aerospace, defense and other leading-edge areas with high price.

The main technique indicators of signal source and traditional function generator are much different from latest arbitrary waveform generator. The related integrated circuit is MC3301.

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