Research On Microwave And Millimeter Wave Power Synthesis Network Technology

With the development of society,people are increasingly inseparable from microwave and millimeter wave communication.Microwave and millimeter wave communication systems play a vital role in both civil and military fields.Among them,the amplifier is a vital component in the microwave millimeter wave communication system,which ensures that the communication system can transmit higher quality and longer signals.The chip is a core component of the amplifier.Although the chip industry is developing rapidly,a single power amplifier chip can output higher and higher power.However,in the field of civil communication or military,the output of a single power amplifier chip is far from satisfying the system.Requirements,so the power synthesis amplifier is still an important part of the power amplifier design,power synthesis technology still determines whether the output of the solid state amplifier ultimately meets the system requirements.From the perspective of microwave and millimeter wave power synthesis network technology,this paper introduces the theory of power synthesis technology,the classification of power synthesis technology,the parameter index of amplifier and its significance,the research of synthesis efficiency and its influencing factors.At the same time,starting from the microwave frequency band and the millimeter wave frequency band,several commonly used power distribution devices in the microwave frequency band and several power distribution devices commonly used in the millimeter wave frequency band are introduced respectively,and the respective characteristics of these devices are analyzed.In the microwave frequency band,this paper designs a C-band high-power synthesis amplifier with a modular design.First,the power amplifier chip is selected,and multiple chip recursive methods are used.In the design of the power splitter,the power capacity limitation is taken into account,and at the same time,the amplitude,phase consistency of the processing,assembly,and power synthesis networks are analyzed in multiple directions,and finally a choice is made.Finally,a C-band hybrid ring was used as the power distribution and synthesis structure.In the millimeter wave frequency band,a Q-band multi-channel power synthesis amplifier is designed by using the waveguide space power synthesis method.First,the power amplifier chip is selected in combination with the project requirements.The power synthesis amplifier adopts a binary synthesis mode,and the main power level module adopts an 8-channel waveguide power divider to realize,and the front-level drive module adopts two power amplifier chip recursive methods to realize.Considering that the final synthesis demand is 45 dBm,if the binary power divider is used,the number of synthesis channels will be too much,and part of the power will be wasted.Therefore,a one-minute three-way waveguide power divider is used.At the same time,in order to reduce the plane area of the power amplifier,this paper uses a step-transition transition structure to change the entire power divider from a planar structure to a three-dimensional structure.Finally,this paper analyzes the theory of radial waveguide power distribution synthesizer,and combines the characteristics of radial waveguides,from the 10 th and 16 th paths to the design of waveguide power divider,and discusses the feasibility of designing the arbitrary power distribution of radial waveguides.Design a ka-band 16-way radial waveguide splitter.