Dual-mode band-pass filter based on LTCC (Low Temperature Co-Fired Ceramic) and preparation method thereof

• Main Authors: XU JIAWEI, YANG YIMIN, LIU ZHENGUO, BAI HAO, YANG MENGHONG
• Format: Patent
• Language: Chinese; English
• Published: 02.04.2024
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRICITY; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE; WAVEGUIDES

The invention relates to a dual-mode band-pass filter based on LTCC. The dual-mode band-pass filter comprises a grounding layer, a dielectric substrate, metalized through holes and seven metal layers, and the dielectric substrate is connected with the grounding layer and located above the grounding layer; the dielectric substrate is a ceramic body metalized through hole, and seven metal layers are arranged in the ceramic body. The dual-mode band-pass filter has the beneficial effects that the Z-direction space in the ceramic body is fully utilized to accommodate the topological structure of the first metal layer to the seventh metal layer, so that the sizes of the dual-mode band-pass filter in the X direction and the Y direction are reduced, and the purpose of miniaturization of the filter is achieved; the electrical performance of the miniaturized LTCC filter can be improved; a perturbation element is introduced on an orthogonal plane of the seven metal layers to realize bimodal cross coupling; the frequency