| 摘要 |
A radio frequency (RF) apparatus or method comprises switching 110, 120 and a bypass path 130 including inductive insertion loss reducing means L1, L2, L3. The bypass path 130 is located between first and second switches 110, 120, where each of the said switches 110, 120 has at least two throws. The inductive means L1, L2, L3 may be an inductor arranged to compensate for a capacitance introduced by at least one of an off state capacitance of the first and/or second switches 110, 120 and/or the capacitance of a transmission line portion of the bypass path 130. The first switch 110 may be coupled between a first inductor L1 and the bypass path 130 and the second switch 120 may be coupled between a second inductor L3 and the bypass path 130, whilst a third inductor L2 may be included. The first, second and third inductors L1, L2, L3 may be configured to compensate for the first switch off capacitance, the second switch off capacitance and bypass path capacitance, respectively. The inductors may be tuneable shunt arrangements. The bypass path 130 may be used in transmission or receiving modes of operation and connected to one or more antennas possibly including a diversity antenna arrangement. |
