| 摘要 |
<p>A switchable FR-path (P1, P2, P3) and a frequency splitter comprising n RF-paths (P1, P2, P3), for use in a multiband and/or multistandard module comprising an RF-input port and an RF-output port, and at least one RF-block (Sb1, Sb2, Sb3), each RF-block (Sb1, Sb2, Sb3) consisting of a quarter-wave line section (QW1, QW2, QW3) shunt connected at its output side to a switching element (S1, S2, S3) which is connected to ground on an output side, whereby each quarter-wave line section (QW1, QW2, QW3) is directly connected in series with the corresponding switching element (S1, S2, S3), wherein for each RF-block (Sb1, Sb2, Sb3) a predetermined frequency band is selected and the length of said quarter-wave line section is matched to said selected frequency band. The inventive frequency splitter enables switching more than two frequency bands and/or a frequency band to more than two ports and also for switching frequencies which are located within a wide frequency range.</p> |
