Switch device providing equal voltage distribution
AssigneeRichWave Technology Corp.
InventorsHang Chang, Chih-Sheng Chen
Life of this patent
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Abstract
A switch device includes a signal input terminal and a switch circuit. The signal input terminal is used to receive a radio frequency signal. The switch circuit is coupled to the signal input terminal, and includes a first transistor and a second transistor. The first transistor includes a control terminal used to receive a first control voltage to turn off the first transistor; a first terminal; and a second terminal. The second transistor includes a control terminal used to receive a second control voltage to turn off the second transistor; a first terminal; and a second terminal. The second control voltage is different from the first control voltage.
Claims18
A switch device comprising:
- an input terminal configured to receive a radio frequency signal;
- and
- a first switch circuit coupled to the input terminal, and comprising:
- a first transistor comprising:
- a first control terminal configured to receive a first control voltage to turn off the first transistor;
- a first terminal;
- and
- a second terminal;
- and
- a second transistor comprising:
- a first control terminal configured to receive a second control voltage to turn off the second transistor, the second control voltage being different from the first control voltage;
- a first terminal coupled to the second terminal of the first transistor;
- and
- a second terminal;
- wherein when the first transistor is turned off, a first equivalent capacitance is configured between the first terminal of the first transistor and the second terminal of the first transistor;
- when the second transistor is turned off, a second equivalent capacitance is configured between the first terminal of the second transistor and the second terminal of the second transistor;
- and
- the first equivalent capacitance exceeds the second equivalent capacitance.
A switch device comprising:
- an input terminal configured to receive a radio frequency signal;
- and
- a first switch circuit coupled to the input terminal, and comprising:
- a first transistor comprising:
- a first control terminal configured to receive a first control voltage to turn off the first transistor;
- a second control terminal configured to receive a first auxiliary voltage;
- a first terminal;
- and
- a second terminal;
- and
- a second transistor comprising:
- a first control terminal configured to receive a second control voltage to turn off the second transistor;
- a second control terminal configured to receive a second auxiliary voltage, the first auxiliary voltage being different from the second auxiliary voltage;
- a first terminal coupled to the second terminal of the first transistor;
- and
- a second terminal.
Dependencies are inferred from the claim text.