A set of microwave low-pass filters and bandpass filters with small ripple characteristics and operating in the fre-quency band near 5G are designed.The semi lumped parameter structure is adopted,and the filtering characteristics based on Che-byshev low-pass prototype filter are selected by comparing with the maximum flatness characteristics.This experiment analyzes and calculates the number of filter sections according to the actual situation.Finally,based on ADS software simulation,the maximum ripple in the low-pass filter band is controlled at-0.383 dB,and the highest frequency is 5 GHz.The bandpass filter's center fre-quency is 5.5 GHz,with a passband bandwidth of 1 GHz.The maximum ripple within the band is-2.166 dB.