Switch device where charges accumulated at control terminals of switch units can be discharged and/or neutralized via sub-switch units

A switch device, comprising:

• a first switch unit comprising a first terminal coupled to a first radio frequency terminal, a control terminal, and a second terminal;
• a second switch unit comprising a first terminal coupled to the second terminal of the first switch unit, a control terminal, and a second terminal coupled to a second radio frequency terminal;
• a first resistor comprising a first terminal configured to receive a first switch control signal, and a second terminal coupled to the control terminal of the first switch unit;
• a second resistor comprising a first terminal configured to receive a second switch control signal, and a second terminal coupled to the control terminal of the second switch unit;
• a first sub-switch unit comprising a first terminal coupled to a node between the control terminal of the first switch unit and the first resistor, a control terminal configured to receive a first sub-switch control signal, and a second terminal;
• a second sub-switch unit comprising a first terminal coupled to a node between the control terminal of the second switch unit and the second resistor, a control terminal configured to receive a second sub-switch control signal, and a second terminal;
• a third switch unit comprising a first terminal coupled to the first radio frequency terminal, a control terminal, and a second terminal;
• a fourth switch unit comprising a first terminal coupled to the second terminal of the third switch unit, a control terminal, and a second terminal coupled to a third radio frequency terminal;
• a third resistor comprising a first terminal configured to receive a third switch control signal, and a second terminal coupled to the control terminal of the third switch unit;
• a fourth resistor comprising a first terminal configured to receive a fourth switch control signal, and a second terminal coupled to the control terminal of the fourth switch unit;
• a fourth sub-switch unit comprising a first terminal coupled to a node between the control terminal of the third switch unit and the third resistor, a control terminal configured to receive a fourth sub-switch control signal, and a second terminal;
• a fifth sub-switch unit comprising a first terminal coupled to a node between the control terminal of the fourth switch unit and the fourth resistor, a control terminal configured to receive a fifth sub-switch control signal, and a second terminal;
• and
• a seventh sub-switch unit comprising a first terminal coupled to the second terminal of the second sub-switch unit, a control terminal configured to receive a seventh sub-switch control signal, and a second terminal coupled to the second terminal of the fifth sub-switch unit;
• wherein the first switch unit and the second switch unit are controlled according to the first switch control signal and the second switch control signal respectively to be turned on or turned off concurrently, and the first sub-switch unit and the second sub-switch unit are controlled according to the first sub-switch control signal and the second sub-switch control signal respectively to be turned on or turned off concurrently;
• wherein the third switch unit and the fourth switch unit are controlled according to the third switch control signal and the fourth switch control signal respectively to be turned on or turned off concurrently, and the fourth sub-switch unit and the fifth sub-switch unit are controlled according to the fourth sub-switch control signal and the fifth sub-switch control signal respectively to be turned on or turned off concurrently.