A NOVEL FOUR-STAGES DOUBLELAYERED DIELECTRIC WAVEGUIDE BANDPASS FILTER IN LTCC

摘要

This study presents a novel four-stage double-layered waveguide bandpass filter and its simulation method. The longitudinal size of the waveguide filters is reduced by 50% due to the application of double-layered structure. The four-stage double-layered bandpass filter with a 8.8 mm length, 6.2 mm width, and 1.6 mm height is manufactured by LTCC. It has a center frequency of 5.21 GHz, bandwidth of 300 MHz, pass-band ripple of 0.1 dB, and insertion loss of 0.8 dB, which shows miniaturization, low insertion losses and meets the demand of next generation of WLAN system.