Switch, antenna tuner, and radio frequency apparatus
First Claim
1. A switch comprising:
- 2N successively serially connected transistors, and wherein N is an integer greater than or equal to 2;
the 2N successively serially connected transistors are divided into groups of odd and even numbered transistors such that the odd numbered transistors are arranged to be interleaved with the even numbered transistors so that a pair of neighboring transistors of one group is separated by a transistor of the other group;
control ends of any two transistors in the odd-numbered group with closest odd sequence numbers are coupled to each other through a first resistor;
control ends of any two transistors in the even-numbered group with closest even sequence numbers are coupled to each other through a second resistor; and
control ends of n-th and (n+1)-th transistors in the 2N successively serially connected transistors are coupled to a first control signal,wherein the control ends are gates and n is an integer that is greater than or equal to 1 and is less than or equal to 2N−
1, and the first control signal is used to control turn-on or turn-off of the switch.
1 Assignment
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Accused Products
Abstract
A switch, an antenna tuner, and a radio frequency apparatus are provided. The switch includes: 2N successively serially connected transistors. In the 2N successively serially connected transistors, control ends of any two transistors with closest odd sequence numbers are coupled to each other through a first resistor, and control ends of any two transistors with closest even sequence numbers are coupled to each other through a second resistor; a control end of an n-th transistor is coupled to a first control signal in a switch control signal, and a control end of an (n+1)-th transistor is coupled to the first control signal, where n is an integer that is greater than or equal to 1 and is less than or equal to 2N−1, N is an integer greater than or equal to 2, and the first control signal is used to control turn-on or turn-off of the switch.
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Citations
20 Claims
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1. A switch comprising:
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2N successively serially connected transistors, and wherein N is an integer greater than or equal to 2; the 2N successively serially connected transistors are divided into groups of odd and even numbered transistors such that the odd numbered transistors are arranged to be interleaved with the even numbered transistors so that a pair of neighboring transistors of one group is separated by a transistor of the other group; control ends of any two transistors in the odd-numbered group with closest odd sequence numbers are coupled to each other through a first resistor; control ends of any two transistors in the even-numbered group with closest even sequence numbers are coupled to each other through a second resistor; and control ends of n-th and (n+1)-th transistors in the 2N successively serially connected transistors are coupled to a first control signal, wherein the control ends are gates and n is an integer that is greater than or equal to 1 and is less than or equal to 2N−
1, and the first control signal is used to control turn-on or turn-off of the switch. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 19, 20)
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13. An antenna tuner, comprising at least two capacitive tuning apparatuses that are connected in parallel, wherein each capacitive tuning apparatus comprises:
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an input end, configured to receive a radio frequency signal; a capacitive tuner including a capacitor, configured to tune the radio frequency signal to obtain a tuned signal; an output end, configured to output the tuned signal; and a switch comprising; 2N successively serially connected transistors and N is an integer greater than or equal to 2; wherein the 2N successively serially connected transistors are divided into groups of odd and even numbered transistors; control ends of any two transistors in the odd-numbered group with closest odd sequence numbers are coupled to each other through a first resistor; control ends of any two transistors in the even-numbered group with closest even sequence numbers are coupled to each other through a second resistor; control ends of n-th and (n+1)-th transistors in the 2N successively serially connected transistors are coupled to a first control signal, and wherein n is an integer that is greater than or equal to 1 and is less than or equal to 2N−
1, and the first control signal is used to control turn-on or turn-off of the switchwherein the switch and the capacitor are serially connected, and the switch, under control of the switch control signal, is capable of selectively coupling the radio frequency signal to the capacitor, so that the radio frequency signal is tuned by using the capacitor. - View Dependent Claims (14, 15, 16)
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17. A radio frequency apparatus, comprising:
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an antenna; and a tuner; wherein the tuner comprises at least two capacitive tuning apparatuses connected in parallel, each capacitive tuning apparatus comprising;
an input end configured to receive a radio frequency signal, a capacitive tuner configured to tune the radio frequency signal to obtain a tuned signal, and an output end configured to output the tuned signal; andwherein the capacitive tuner comprises a capacitor configured to tune the radio frequency signal, and a switch; wherein the switch comprises;
2N successively serially connected transistors and wherein N is an integer greater than or equal to 2;the 2N successively serially connected transistors are divided into groups of odd and even numbered transistors; control ends of any two transistors in the odd-numbered group with closest odd sequence numbers are coupled to each other through a first resistor; control ends of any two transistors in the even-numbered group with closest even sequence numbers are coupled to each other through a second resistor; control ends of n-th and (n+1)-th transistors in the 2N successively serially connected transistors are coupled to a first control signal, and wherein n is an integer that is greater than or equal to 1 and is less than or equal to 2N−
1, and the first control signal is used to control turn-on or turn-off of the switch;wherein the switch and the capacitor are serially connected, and the switch, under control of the switch control signal, is capable of selectively coupling the radio frequency signal to the capacitor, so that the radio frequency signal is tuned by using the capacitor; the antenna is configured to receive the tuned signal from the tuner, and send the tuned signal. - View Dependent Claims (18)
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Specification