LTCC-based novel semi-lumped one-to-three filter power divider

Abstract

The invention discloses an LTCC-based novel semi-lumped one-to-three filter power divider, and belongs to the technical field of microwave. The filter power divider comprises a semi-lumped bandpass filter and a same-phase three-path power divider, and the novel filter power divider is successfully achieved by abutting of an output end of the bandpasss filter and an input end of the same-phase power divider. The bandpass filter employs a semi-lumped structure, and the same-phase power divider is a one-to-three equal power divider. Three-dimensional integration is achieved by a low-temperature cofiring ceramic (LTCC) process, and the filter power divider has the advantages of good port isolation degree, low insertion loss, good return loss, small size, favorable electrical performance, highintegration, high finished rate, low expansion coefficient and the like and has favorable application prospect in the field of a communication system radio-frequency front-end circuit and a radar system which are relatively high in miniaturization requirement.

Description

technical field [0001] The invention belongs to the field of microwave technology, and in particular relates to a novel semi-lumped one-to-three filter power divider based on LTCC. Background technique [0002] Power dividers and filters are two important microwave devices in wireless communication systems and radar systems. They are often used in the RF front-end circuit of the system at the same time. Since these two passive devices occupy a relatively large space in the RF front-end, they are This greatly limits the miniaturization design of the system. The traditional method is to separately miniaturize the power divider and filter, which can reduce the entire system to a certain extent, but the overall reduction space is relatively limited. If the two are integrated and designed as a filter power divider, not only can the circuit size be greatly reduced, the processing cost can be reduced, and the insertion loss can be reduced, but also the noise characteristics can be...

AI Technical Summary

Problems solved by technology

[0002] Power dividers and filters are two important microwave devices in wireless communication systems and radar systems. They are often used in the RF front-end circuit of the system at the same time. Since these two passive devices occupy a relatively large space in the RF front-end, they are It greatly limits the miniaturization design of the system

The traditional method is to separately miniaturize the power splitter and filter, which can reduce the entire system to a certain extent, but the overall reduction space is relatively limited

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