Abstract: In order to meet the needs of wide band agile vector signals for the test of radar systems,communication equipment and the construction of complex electromagnetic environment，using many kinds of ways simultaneously to generate the signal,such as Direct Analog Synthesis(DAS),Phase-Locked Loop(PLL)synthesis,Direct Digital Synthesis(DDS),I/Q digital vector modulate etc.，agile vector signal generate technology is researched.Many key technologies,such as frequency agility,amplitude agility,modulation agility,high speed time synchronization and control,complex electromagnetic signals generation etc.，are broken through.The agile vector signal generator is combinated with the advantages of vector signal generator,agile signal generator and low phase noise signal generator.The advanced technical indicators,such as 40 GHz frequency range,100 ns agile time,1 GHz instantaneous bandwidth etc.，are realized.

Key words: Vector, Frequency agility, Amplitude agility, Modulation agility, Signal generator