Radio frequency switching module and control method thereof
AssigneeRichWave Technology Corp.
InventorChih-Sheng Chen
Life of this patent
Estimating the term…
Abstract
A radio frequency (RF) switching module and a control method of the RF switching module are described. The RF switching module has 2 switches, and the control method includes starting to turn off a first switch of the RF switching module, starting to turn on a second switch of the RF switching module after the first switch is turned off for a first predetermined time, wherein starting to turn off the first switch and starting to turn on the second switch is finished during a transition period from a first mode to a second mode.
Claims18
A control method of a radio frequency (RF) switching module, the RF switching module comprising a first switch coupled between a common port and a first port, and a second switch coupled between the common port and a second port, wherein the RF switching module is applied to switching between a first mode and a second mode, the first switch is turned on and the second switch is turned off in the first mode, and the first switch is turned off and the second switch is turned on in the second mode, the method comprising:
- providing a first turning-off signal to the first switch when the RF switching module is in the first mode;
- providing a first turning-on signal to the second switch after the first turning-off signal is provided for a first predetermined time;
- and
- switching the RF switching module from the first mode to the second mode according to the first turning-on signal.
An RF switching module, comprising:
- a first switch coupled between a common port and a first port;
- a second switch coupled between the common port and a second port;
- and
- a control signal generation module for providing a first turning-off signal and a first turning-on signal;
- wherein the RF switching module is applied to switching between a first mode and a second mode, the first switch is turned on and the second switch is turned off in the first mode, and the first switch is turned off and the second switch is turned on in the second mode;
- wherein the first turning-off signal is provided to the first switch when the RF switching module is in the first mode, and the first turning-on signal is provided to the second switch after the first turning-off signal is provided for a first predetermined time to make the RF switching module be switched from the first mode to the second mode.
Dependencies are inferred from the claim text.