System and Method for a Driving a Radio Frequency Switch
First Claim
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1. A radio frequency (RF) switching circuit comprising:
- a plurality of series connected RF switch cells comprising a load path and a control node, wherein each of the plurality of series connected RF switch cells comprises a switch transistor;
a plurality of first gate resistors coupled between control nodes of adjacent RF switch cells; and
an input resistor having a first end coupled to a control node of one of the plurality of RF switch cells and a second end configured to an output of a switch driver.
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Abstract
In accordance with an embodiment, a radio frequency (RF) switching circuit includes a plurality of series connected RF switch cells comprising a load path and a control node, a plurality of first gate resistors coupled between control nodes of adjacent RF switch cells, and an input resistor having a first end coupled to a control node of one of the plurality of RF switch cells and a second end configured to an output of a switch driver. Each of the plurality of series connected RF switch cells includes a switch transistor.
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Citations
26 Claims
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1. A radio frequency (RF) switching circuit comprising:
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a plurality of series connected RF switch cells comprising a load path and a control node, wherein each of the plurality of series connected RF switch cells comprises a switch transistor; a plurality of first gate resistors coupled between control nodes of adjacent RF switch cells; and an input resistor having a first end coupled to a control node of one of the plurality of RF switch cells and a second end configured to an output of a switch driver. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A radio frequency (RF) switching circuit comprising:
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a first plurality of series connected resistors; a second plurality of shunt resistors having first ends coupled between resistors of the first plurality of series connected resistors; an input coupling resistor having a first end coupled to a center tap of the first plurality of series connected resistors; a plurality of series connected transistors coupled between a first RF switch terminal and a second RF switch terminal, each of the plurality of series connected transistors having control nodes coupled to respective ends of the second plurality of shunt resistors, wherein a resistance of each of the first plurality of series connected resistors successively decreases from the center tap toward an end of the first plurality of series connected resistors; and a resistance of the each of the second plurality of shunt resistors successively decreases from a first shunt resistor of the second plurality of shunt resistors coupled to the center tap to a first transistor coupled to the first RF switch terminal and successively decreases from the first shunt resistor of the second plurality of shunt resistors coupled to the center tap to a last transistor coupled to the second RF switch terminal. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21, 22, 23)
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24. A method of operating a radio frequency (RF) switching circuit comprising a plurality of series connected RF switch cells having a load path and a control node, and an input resistor having a first end coupled to a control node of one of the plurality of RF switch cells, and a plurality of first gate resistors coupled between control nodes of adjacent RF switch cells, wherein each of the plurality of series connected RF switch cells comprises a switch transistor, and the method comprises:
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turning-on the RF switching circuit comprising applying an activation voltage to a second end of the input resistor, wherein the activation voltage corresponds to an on-voltage of the switch transistors of the RF switch cells; and turning-off the RF switching circuit comprising applying a de-activation voltage to a second end of the input resistor, wherein the de-activation voltage corresponds to an off-voltage of the switch transistors of the RF switch cells. - View Dependent Claims (25, 26)
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Specification