BIAS CIRCUIT FOR A HIGH POWER RADIO FREQUENCY SWITCHING DEVICE
First Claim
1. A circuit comprising:
- a transistor having a gate terminal;
a control terminal coupled with the gate terminal, the control terminal to receive a control voltage to switch the transistor between a first state and a second state to facilitate switching of a radio frequency (RF) signal;
a gate resistor coupled between the gate terminal and the control terminal; and
one or more diodes coupled in parallel with the gate resistor between the gate terminal and the control terminal.
2 Assignments
0 Petitions
Accused Products
Abstract
Embodiments provide a switching circuit including a transistor and a bias circuit. The transistor may transition between an off state and an on state responsive to a control signal received at a control terminal. The bias circuit may be coupled between the control terminal and a gate terminal of the transistor. The bias circuit may include a gate resistor coupled between the gate terminal and the control terminal. The bias circuit may further include one or more diodes coupled in parallel with the gate resistor between the gate terminal and the control terminal to allow leakage current to pass from the gate terminal through the one or more diodes. In some embodiments, the bias circuit may include a switch coupled with the one or more diodes to selectively couple the one or more diodes in parallel with the gate resistor when the transistor is off.
9 Citations
22 Claims
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1. A circuit comprising:
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a transistor having a gate terminal; a control terminal coupled with the gate terminal, the control terminal to receive a control voltage to switch the transistor between a first state and a second state to facilitate switching of a radio frequency (RF) signal; a gate resistor coupled between the gate terminal and the control terminal; and one or more diodes coupled in parallel with the gate resistor between the gate terminal and the control terminal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A radio frequency (RF) switching apparatus comprising:
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a transistor having a gate terminal; a control terminal coupled with the gate terminal, the control terminal to receive a control voltage to turn the transistor on or off to facilitate switching of an RF signal; and a bias circuit coupled between the gate terminal and the control terminal, the bias circuit including a gate resistor coupled between the gate terminal and the control terminal, and the bias circuit to selectively provide a conductive path between the gate terminal and the control terminal, around the gate resistor and through one or more diodes, when the transistor is off. - View Dependent Claims (11, 12, 13, 14, 15, 16)
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17. A system comprising:
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an input port to receive a radio frequency (RF) signal; an output port; a series transistor coupled in series between the input port and the output port to selectively pass the RF signal to the output port when the series transistor is on; a series control terminal coupled with a gate terminal of the series transistor, the series control terminal to receive a series control voltage to turn the series transistor on or off; and a series bias circuit coupled with the gate terminal of the series transistor, the series bias circuit including; a series gate resistor coupled between the gate terminal of the series transistor and the series control terminal; one or more diodes coupled in parallel with the series gate resistor between the gate terminal of the series transistor and the series control terminal; and a switch coupled in series with the one or more diodes between the gate terminal of the series transistor and the series control terminal to selectively conductively couple the one or more diodes in parallel with the series gate resistor responsive to the series control voltage. - View Dependent Claims (18, 19, 20, 21, 22)
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Specification