Signal transmitting/receiving circuit including an impedance matching circuit
First Claim
1. A signal transmitting and receiving circuit, comprising:
- a transmitter, for transmitting an output signal;
a receiver, for receiving an input signal;
a balun, having a first input terminal, a second input terminal and an output terminal; and
an impedance matching circuit, coupled between the transmitter, the receiver and the balun, for providing a transmitting impedance when the transmitter transmits the output signal such that the output signal is output at an output terminal of the balun via a transmitting path, and providing a receiving impedance when the receiver receives the input signal such that the input signal is transmitted from the output terminal of the balun to the receiver via a receiving path, wherein the impedance matching circuit further comprises at least one switch component coupled between the receiving path and a ground potential.
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Accused Products
Abstract
A signal transmitting/receiving circuit includes a transmitter, a receiver, a balun and an impedance matching circuit. The transmitter is utilized for transmitting an output signal. The receiver is utilized for receiving an input signal. The balun includes a first input terminal, a second input terminal and an output terminal. The impedance matching circuit, which is coupled between the transmitter, the receiver, and the balun, provides transmitting impedance when the transmitter transmits the output signal such that an output signal may be output at an output terminal of the balun via a transmitting path. Also, the impedance matching circuit provides transmitting impedance when the receiver receives the input signal such that the input signal may be transmitted from the output terminal of the balun to the receiver via a receiving path.
30 Citations
19 Claims
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1. A signal transmitting and receiving circuit, comprising:
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a transmitter, for transmitting an output signal; a receiver, for receiving an input signal; a balun, having a first input terminal, a second input terminal and an output terminal; and an impedance matching circuit, coupled between the transmitter, the receiver and the balun, for providing a transmitting impedance when the transmitter transmits the output signal such that the output signal is output at an output terminal of the balun via a transmitting path, and providing a receiving impedance when the receiver receives the input signal such that the input signal is transmitted from the output terminal of the balun to the receiver via a receiving path, wherein the impedance matching circuit further comprises at least one switch component coupled between the receiving path and a ground potential. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A signal transmitting and receiving circuit, comprising:
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a transmitter, for transmitting an output signal; a receiver, for receiving an input signal; a balun, having a first input terminal, a second input terminal and an output terminal; an impedance matching circuit, coupled between the transmitter, the receiver and the balun, for providing a transmitting impedance when the transmitter transmits the output signal such that the output signal is output at an output terminal of the balun via a transmitting path, and providing a receiving impedance when the receiver receives the input signal such that the input signal is transmitted from the output terminal of the balun to the receiver via a receiving path; and an inductor coupled between the first input terminal and the second input terminal of the balun. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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17. A signal transmitting and receiving circuit, comprising:
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a transmitter, for transmitting an output signal; a receiver, for receiving an input signal; a balun, having a first input terminal, a second input terminal and an output terminal; an impedance matching circuit, coupled between the transmitter, the receiver and the balun, for providing a transmitting impedance when the transmitter transmits the output signal such that the output signal is output at an output terminal of the balun via a transmitting path, and providing a receiving impedance when the receiver receives the input signal such that the input signal is transmitted from the output terminal of the balun to the receiver via a receiving path, wherein the transmitter, the receiver and the balun are disposed in a same integrated circuit (IC). - View Dependent Claims (18, 19)
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Specification