| The microwave adaptive interference cancellation technology and the system imitation method are investigated in this paper. The model of the system imitation is built based on the perpendicular least square method , and the influences of all kinds of microwave elements in the system on the interference cancellation and optimum system controlled weight value on its convergence property are analyzed in detail . A kind of the microwave self-tuning interference cancellation system is fabricated and imitated , with the results for imitation and measurement . It is shown that the microwave mixer noise is a very important factor which affects the interference cancellation ratio in microwave system. Under some experiment conditions , the cancellation waves of the system imitation and measurement are similarly consistent . It is also proved that the system imitation method is fully effective , and this imitation software has a good computer interface, easy for operation. The voltage-current transforming circuit , which is used to drive the microstrip balun bipolar PIN diode voltage-controlled attenuator, is investigated in this paper too. |
PDF Full Text Request