In order to diversify and intelligentize application scenarios of microwave radar,a doppler microwave radar which can greatly reduce complexity of algorithm and realize basic human attitude detection function is designed,It combines microwave radar with attitude detection function.The microwave radar mainly includes sector beam antenna,integrated microstrip mixing circuit,body signal detection circuits,logical realization of attitude detection function and so on.Circuits is simulated and optimized by High Frequency Structure Simulator、Advanced...