Switching circuit and RF switch including the same
First Claim
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1. A switching circuit comprising:
- a switching circuit unit including a plurality of switching devices connected to each other in series;
a reference voltage unit connected between the switching circuit unit and a signal input terminal and providing a preset reference voltage; and
a voltage generating unit dividing a first control voltage provided to the switching circuit unit by a preset magnitude to generate a second control voltage corresponding to the reference voltage, and providing the second control voltage to bodies of the plurality of respective switching devices.
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Abstract
A switching circuit may include a switching circuit unit; a reference voltage unit connected between the switching circuit unit and a signal input terminal and providing a preset reference voltage; and a voltage generating unit dividing a first control voltage provided to the switching circuit unit by a preset magnitude to generate a second control voltage corresponding to the reference voltage, and providing the second control voltage to bodies of the plurality of respective switching devices.
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Citations
14 Claims
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1. A switching circuit comprising:
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a switching circuit unit including a plurality of switching devices connected to each other in series; a reference voltage unit connected between the switching circuit unit and a signal input terminal and providing a preset reference voltage; and a voltage generating unit dividing a first control voltage provided to the switching circuit unit by a preset magnitude to generate a second control voltage corresponding to the reference voltage, and providing the second control voltage to bodies of the plurality of respective switching devices. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A RF (Radio Frequency) switch comprising:
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a common port connected to an antenna to transmit and receive a high frequency signal; a first switching unit having a plurality of first body contact type switching devices connected to each other in series between the common port and a first port; a second switching unit having a plurality of second body contact type switching devices connected to each other in series between the common port and a second port; a first reference voltage unit disposed between the first switching unit and the first port to provide a first reference voltage; and a second reference voltage unit disposed between the second switching unit and the second port to provide a second reference voltage, wherein the first switching unit divides a voltage received from a first common control terminal of the plurality of first body contact type switching devices by a resistance value preset in such a manner that a voltage difference between the first reference voltage and the voltage received from the first common control terminal is not present, to thereby provide the divided voltage to a first common body terminal of the plurality of first body contact type switching devices, and the second switching unit divides a voltage received from a second common control terminal of the plurality of second body contact type switching devices by a resistance value preset in such a manner that a voltage difference between the second reference voltage and the voltage received from the second common control terminal is not present, to thereby provide the divided voltage to a second common body terminal of the plurality of second body contact type switching devices. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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Specification