公开(公告)号：US12074579B2

公开(公告)日：2024-08-27

申请号：US17778015

申请日：2021-03-24

Applicant: JIAXING GLEAD ELECTRONICS CO., LTD

Inventor： Changwei Luo ,  Kuan-Yu Lu ,  Jiayuan Hua ,  Feng Pan ,  Nan Liu ,  Lili Wang ,  Xing Xu

IPC: H03H7/01 ,  H01F27/28 ,  H01F27/40 ,  H01G4/40 ,  H03H1/00

CPC classification number: H03H7/0115 ,  H01F27/28 ,  H01F27/40 ,  H01G4/40 ,  H03H7/1775 ,  H03H2001/0085

Abstract: The disclosure relates to an ultra-wide passband five-order band-pass filter based on an LTCC process. The ultra-wide passband five-order band-pass filter comprises a ceramic substrate, a bottom input electrode, a bottom output electrode and a bottom grounding electrode. Five parallel resonators, a grounding polar plate, two series connection capacitors, two series connection inductors, a cross-coupling capacitor and a parallel inductor are arranged in the ceramic substrate; the two series connection capacitors comprise a first series capacitor and a second series capacitor; the two series connection inductors comprise a first series inductor and a second series inductor; and according to the filter, a five-order parallel resonance structure is adopted, out-of-band suppression is deepened through the five parallel resonance units, a cross coupling capacitor, a parallel inductor and two series connection inductors are innovatively introduced.