Design of a novel via and stub resonator bandpass filter

In order to meet the characterization of circuit miniaturization, the design method was proposed on via subject structure loading open and short stub resonator object structure, which the new band-pass filter is now available. After the simulation and optimization, the physical processing test was carried out, and the volume size of the filter was 40 mm * 20 mm * 0.9 mm, and the operating pass bandwidth can reach the 1.36~2.83 GHz range, relative bandwidth was 70.2%, the insertion loss in band was less than1.5dB, the return loss was less than -15dB, the maximum suppression outside the band was less than -40dB. The measured values were in good agreement with the simulated values.