LTCC (Low Temperature Co-Fired Ceramic) laminated chip duplexer

• Main Authors: LIU JICHAO, SHEN SHIYAO, LIN YAMEI, YANG JUNYA, CHEN YINGLIN, MENG TENG'AO
• Format: Patent
• Language: Chinese; English
• Published: 05.04.2024
• Subjects: BASIC ELECTRONIC CIRCUITRY; ELECTRICITY; IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS

The invention provides an LTCC (Low Temperature Co-Fired Ceramic) laminated chip duplexer. The LTCC laminated chip duplexer comprises a common input end, a low-pass output end, a high-pass output end, a low-pass filter and a high-pass filter, the low-pass filter is connected between the common input end and the low-pass output end; the high-pass filter is connected between the common input end and the high-pass output end and is connected in parallel with the low-pass filter. According to the LTCC laminated chip duplexer provided by the invention, the optimization of the duplexer structure is realized through the parallel connection of the low-pass filter and the high-pass filter, the insertion loss between passbands of the duplexer is reduced, and the frequency point suppression is improved. 本申请提供了一种LTCC叠层片式双工器，包括公共输入端、低通输出端、高通输出端、低通滤波器和高通滤波器。低通滤波器连接于公共输入端与低通输出端之间；高通滤波器连接于公共输入端与高通输出端之间，并与低通滤波器并联。本申请提供的LTCC叠层片式双工器，通过低通滤波器与高通滤波器的并联实现双工器结构的优化，降低双工器通带间的插入损耗并提高频点抑制。