RADIO FREQUENCY SWITCHING CIRCUIT AND ELECTRONIC DEVICE
First Claim
1. A radio frequency (RF) switching circuit comprising:
- a first switching circuit unit connected between a first signal port for signal transmission and reception and a common connection node connected to an antenna port and operated according to a first gate signal;
a second switching circuit unit connected between a second signal port for signal transmission and reception and the common connection node and operated according to a second gate signal;
a negative voltage generating unit generating a negative voltage using a voltage of an RF signal from the common connection node; and
a gate signal generating unit generating the first and second gate signals using the negative voltage from the negative voltage generating unit and an operating voltage.
1 Assignment
0 Petitions
Accused Products
Abstract
A radio frequency (RF) switching circuit may include: a first switching circuit unit connected between a first signal port for signal transmission and reception and a common connection node connected to an antenna port and operated according to a first gate signal; a second switching circuit unit connected between a second signal port for signal transmission and reception and the common connection node and operated according to a second gate signal; a negative voltage generating unit generating a negative voltage using a voltage of an RF signal from the common connection node; and a gate signal generating unit generating the first and second gate signals using the negative voltage from the negative voltage generating unit and an operating voltage.
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Citations
20 Claims
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1. A radio frequency (RF) switching circuit comprising:
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a first switching circuit unit connected between a first signal port for signal transmission and reception and a common connection node connected to an antenna port and operated according to a first gate signal; a second switching circuit unit connected between a second signal port for signal transmission and reception and the common connection node and operated according to a second gate signal; a negative voltage generating unit generating a negative voltage using a voltage of an RF signal from the common connection node; and a gate signal generating unit generating the first and second gate signals using the negative voltage from the negative voltage generating unit and an operating voltage. - View Dependent Claims (2, 3, 4)
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5. A radio frequency (RF) switching circuit comprising:
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a first switching circuit unit connected between a first signal port for signal transmission and reception and a common connection node connected to an antenna port and operated according to a first gate signal; a second switching circuit unit connected between a second signal port for signal transmission and reception and the common connection node and operated according to a second gate signal; a negative voltage generating unit generating a negative voltage using a voltage of an RF signal from the common connection node; a first gate signal generating unit selecting one of the negative voltage from the negative voltage generating unit and an operating voltage according to a switching control signal, and providing the selected voltage as the first gate signal; and a second gate signal generating unit selecting the other of the negative voltage from the negative voltage generating unit and the operating voltage, which has not been selected by the first gate signal generating unit, according to the switching control signal, and providing the selected voltage as the second gate signal. - View Dependent Claims (6, 7, 8, 9, 10, 11)
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12. An electronic device comprising:
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a first switching circuit unit connected between a first signal port for signal transmission and reception and a common connection node connected to an antenna port and operated according to a first gate signal; a second switching circuit unit connected between a second signal port for signal transmission and reception and the common connection node and operated according to a second gate signal; a negative voltage generating unit generating a negative voltage using a voltage of an RF signal from the common connection node; a gate signal generating unit generating the first and second gate signals using the negative voltage from the negative voltage generating unit and an operating voltage according to a switching control signal; and a control unit generating the switching control signal according to a system operation control signal. - View Dependent Claims (13, 14, 15)
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16. An electronic device comprising:
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a first switching circuit unit connected between a first signal port for signal transmission and reception and a common connection node connected to an antenna port and operated according to a first gate signal; a second switching circuit unit connected between a second signal port for signal transmission and reception and the common connection node and operated according to a second gate signal; a negative voltage generating unit generating a negative voltage using a voltage of an RF signal from the common connection node; a first gate signal generating unit selecting one of the negative voltage from the negative voltage generating unit and an operating voltage according to a first switching control signal, and providing the selected voltage as the first gate signal; a second gate signal generating unit selecting the other of the negative voltage from the negative voltage generating unit and the operating voltage, which has not been selected by the first gate signal generating unit, according to a second switching control signal having a phase different from a phase of the first switching control signal, and providing the selected voltage as the second gate signal; and a control unit generating the first and second switching control signals in the mutually opposite phase relations according to a system operation control signal. - View Dependent Claims (17, 18, 19, 20)
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Specification