Multi-band circuit for electrical component, has signal path comprising two signal branches with respective circuits, where one circuit diverts signals at blocking frequency, such that input of one signal branch is connected with ground

摘要

The circuit has a signal path comprising two signal branches (RX1, TX1, RX2, TX2) that are combined at an antenna side for forming a common path (RX, TX). One signal branch has a circuit that is permeable to a frequency band, and the other signal branch has another circuit that is permeable to another frequency band. The latter circuit diverts high-frequency signals to the ground at a blocking frequency, such that the antenna-side input of the former signal branch is connected with the ground.