The Design Of Power Divider Used For X-band Shaped Antenna

Power divider is a wireless communication system,an important device,often as a feed network to provide an array antenna excitation.For different array antenna model,you need to design different power splitter to meet its required excitation beam forming,so efficient power splitter design method can greatly improve the efficiency of the array antenna shaped,with high engineering practice significance.Antenna arrays shaped the process is optimized algorithm theory they need incentives(usually amplitude and phase),and then use the feed network will encourage the realization of the above-mentioned optimization and efficiently get transmitted to the input port of the array antenna.Desired array antenna incentives will continue to change over its structure,materials(such as medium plate),the target patterns and other factors,and to change the traditional power divider output incentives need to consume a lot of time and effort,aiming at the above phenomenon,based on the traditional Gysel power divider model to design a new structure power dividers,flexibility easily realized simply by changing the output driver controlled and microstrip line width to complete the change of the dielectric plate material;after power divider design process,propose an efficient output to any splitters efficient than the method and design of power splitter phase proved;in addition the presence of mutual coupling between microstrip lines in the overall simulation after the antenna connections and splitters antenna input and the output of the power divider impedance mismatch,the paper introduces mutual coupling compensation transmission line theory,ideology and combined effectively solve the above problems and improve the overall simulation results array antenna splitter and success.The simulation results show that the design of power divider can output not only arbitrary amplitude and phase,and after contact with the array antenna simulation results are also better.Gysel Power divider article reference model,a new method of power divider design,not only can achieve any power divider and phase ratio of 1/2 power divider,and to integrate it as an output to an arbitrary phase and amplitude 1/16 power divider,and later use the microstrip line impedance matching theory and thinking to improve mutual coupling compensation after the power divider is connected to the antenna simulation results as a whole.The main work in this paper are showed as the following aspects:(1)Gysel power divider based on the traditional model,using microstrip transmission line theory to design any function within an X-band low loss,low VSWR division ratio of 1/2 and output phase splitter,the power divider can achieve any the power divider ratio and phase array antenna is shaped so as to provide the desired excitation process.Furthermore,since the dielectric board material array antenna due to production costs,the difficulty of making change,and this design simply by changing the power divider microstrip line width can be completed successfully divided the dielectric plate depending on the dielectric constant of the material change,with high engineering practice.(2)Based on previous design of 1/2 Gysel power divider,according to the topology of the transmission line theory based on the design of an integrated 1/16 power divider,you can achieve 16 ports simultaneously output arbitrary amplitude and phase,allowing as in engineering practice array antennas provided by the theory of algorithms to optimize the amplitude and phase.(3)After the success of the design will divide power divider is connected with the whole array antenna simulation,while the results will be recorded output splitters and brought into a single array antenna simulation appears splitters whole array antenna simulation results alone antenna simulation results of different phenomena,aiming to meet the above-mentioned phenomenon in an array antenna input and the output impedance matching power divider introduces the premise of mutual coupling compensation thought to improve the power divider and a whole array antenna simulation results.