Abstract: A radio frequency circuit includes a power amplifier configured to selectively amplify one of a first radio frequency signal and a second radio frequency signal that have different bandwidths, and when the first radio frequency signal is input to the power amplifier, a first bias signal is applied to the power amplifier, and when the second radio frequency signal is input to the power amplifier, a second bias signal different from the first bias signal is applied to the power amplifier.

Abstract: A radio frequency circuit includes: a first filter connected to an antenna connection terminal and having a passband including a first band; a second filter connected to the antenna connection terminal and having a passband including a second band; and an active circuit connected to the first filter. The active circuit includes: a low noise amplifier; a first capacitor disposed on a feedback path of the low noise amplifier; and at least one of a first inductor or a first resistor, disposed on the feedback path. A signal of the first band and a signal of the second band are simultaneously transferable.

Abstract: In simultaneous communication using multiple frequency bands, the degradation in the communication quality is suppressed. The radio-frequency front-end circuit (1) includes an antenna terminal (2), a transmit filter (3), a receive filter, a transport filter, a switch (6), and a phase adjusting circuit (7). The switch (6) is capable of connecting the antenna terminal (2) to the transmit filter (3) or the receive filter and the transport filter simultaneously. The transmit filter (3) is disposed on a transmission path (T1). The receive filter is disposed on a reception path. The transport filter is disposed on a transport path. The phase adjusting circuit (7) is disposed on at least one of paths, the transmission path (T1), the reception path, and a reception/transmission path.

Abstract: In simultaneous communication using multiple frequency bands, the degradation in the communication quality is suppressed. The radio-frequency front-end circuit (1) includes an antenna terminal (2), a transmit filter (3), a receive filter, a transport filter, a switch (6), and a phase adjusting circuit (7). The switch (6) is capable of connecting the antenna terminal (2) to the transmit filter (3) or the receive filter and the transport filter simultaneously. The transmit filter (3) is disposed on a transmission path (T1). The receive filter is disposed on a reception path. The transport filter is disposed on a transport path. The phase adjusting circuit (7) is disposed on at least one of paths, the transmission path (T1), the reception path, and a reception/transmission path.

Abstract: A radio frequency circuit includes a power amplifier configured to selectively amplify one of a first radio frequency signal and a second radio frequency signal that have different bandwidths, and when the first radio frequency signal is input to the power amplifier, a first bias signal is applied to the power amplifier, and when the second radio frequency signal is input to the power amplifier, a second bias signal different from the first bias signal is applied to the power amplifier.

Abstract: A radio frequency circuit includes a power amplifier configured to selectively amplify one of a first radio frequency signal and a second radio frequency signal that have different bandwidths, and when the first radio frequency signal is input to the power amplifier, a first bias signal is applied to the power amplifier, and when the second radio frequency signal is input to the power amplifier, a second bias signal different from the first bias signal is applied to the power amplifier.

Abstract: In simultaneous communication using multiple frequency bands, the degradation in the communication quality is suppressed. The radio-frequency front-end circuit (1) includes an antenna terminal (2), a transmit filter (3), a receive filter, a transport filter, a switch (6), and a phase adjusting circuit (7). The switch (6) is capable of connecting the antenna terminal (2) to the transmit filter (3) or the receive filter and the transport filter simultaneously. The transmit filter (3) is disposed on a transmission path (T1). The receive filter is disposed on a reception path. The transport filter is disposed on a transport path. The phase adjusting circuit (7) is disposed on at least one of paths, the transmission path (T1), the reception path, and a reception/transmission path.

Abstract: A radio frequency circuit includes a power amplifier configured to selectively amplify one of a first radio frequency signal and a second radio frequency signal that have different bandwidths, and when the first radio frequency signal is input to the power amplifier, a first bias signal is applied to the power amplifier, and when the second radio frequency signal is input to the power amplifier, a second bias signal different from the first bias signal is applied to the power amplifier.

Abstract: The coupling members are positioned so as to span both paired housing halves and extend across the multiple connecting units in the direction of coupling of the connecting units, while, at the same time, having pairs of engaging portions engaging the respective housing halves of each connecting unit 10, and each of the paired housing halves has engageable portions engaging the corresponding engaging portions both in the direction of connection to counterpart connector components and in the direction of coupling.

Abstract: An electrical connector adapted such that blades that hold in place arrays of multiple terminals extending in a direction of connection to counterpart connector components are secured in place by a pair of housing halves split in said direction of connection, thereby forming a single connecting unit and each of the respective paired housing halves can be mated with a counterpart connector component in the above-mentioned direction of connection, wherein: the paired housing halves have interengaging portions in opposed sections of said housing halves the interengaging portions provided in a first housing half are positioned overlappingly with the other interengaging portions provided in the other housing half in the above-mentioned direction of connection, and abutment between the wall surface of the first interengaging portions and the wall surface of the other interengaging portions is made possible in the thickness direction of the above-mentioned blades.

Abstract: An electrical connector adapted such that blades that hold in place arrays of multiple terminals extending in a direction of connection to counterpart connector components are secured in place by a pair of housing halves split in said direction of connection, thereby forming a single connecting unit and each of the respective paired housing halves can be mated with a counterpart connector component in the above-mentioned direction of connection, wherein: the paired housing halves have interengaging portions in opposed sections of said housing halves the interengaging portions provided in a first housing half are positioned overlappingly with the other interengaging portions provided in the other housing half in the above-mentioned direction of connection, and abutment between the wall surface of the first interengaging portions and the wall surface of the other interengaging portions is made possible in the thickness direction of the above-mentioned blades.

Abstract: The coupling members are positioned so as to span both paired housing halves and extend across the multiple connecting units in the direction of coupling of the connecting units, while, at the same time, having pairs of engaging portions engaging the respective housing halves of each connecting unit 10, and each of the paired housing halves has engageable portions engaging the corresponding engaging portions both in the direction of connection to counterpart connector components and in the direction of coupling.

Abstract: A semiconductor apparatus, includes a common mode detector circuit that receives alternating current (AC) signals in a common mode.

Abstract: A semiconductor apparatus, includes a common mode detector circuit that receives alternating current (AC) signals in a common mode.

Abstract: A semiconductor apparatus includes a common mode detector circuit that receives differential alternating current (AC) signal; and a detector circuit.

Abstract: A semiconductor apparatus includes a common mode detector circuit that receives differential alternating current (AC) signal; and a detector circuit.

Abstract: A semiconductor apparatus that can detect the amplitude level of harmonics is provided. A semiconductor apparatus includes a common mode detector circuit that detects alternating current (AC) signals in a common mode, and a detector circuit that detects the amplitude level of an even-order harmonic output from the common mode detector circuit. The common mode detector circuit combines the AC signals being differential signals in common mode, thereby cancelling out odd-order harmonics to obtain direct current and even-order harmonics. The detector circuit detects the amplitude level of the even-order harmonics from a signal obtained by the common mode detection, and outputs the detected amplitude level.

Abstract: A semiconductor apparatus that can detect the amplitude level of harmonics is provided. A semiconductor apparatus 10 includes a common mode detector circuit 11 that detects AC signals in a common mode, and a detector circuit 12 that detects the amplitude level of an even-order harmonic output from the common mode detector circuit 11. The common mode detector circuit 11 combines AC signals being differential signals in common mode, thereby cancelling out odd-order harmonics to obtain direct current and even-order harmonics. The detector circuit 12 detects the amplitude level of the even-order harmonics from a signal obtained by the common mode detection, and outputs the detected amplitude level.

Abstract: A wireless communication device includes a radio frequency integrated circuit (RFIC) which includes a filter circuit operable to pass a desired signal component of a high-frequency signal inputted and operable to attenuate a harmonic component of an integral multiple of the desired signal. The filter circuit includes a first inductor and a second inductor coupled to a signal line transmitting the high-frequency signal. A first input terminal and a second input terminal are operable to receive the high-frequency signal as a differential signal, wherein the first inductor and the second inductor are formed by a first differential inductor and a second differential inductor are coupled between the first input terminal and the second input terminal.

Abstract: A semiconductor device includes a filter circuit operable to pass a desired signal component of a high-frequency signal inputted and operable to attenuate a harmonic component of an integral multiple of the desired signal, wherein the filter circuit includes a first inductor and a second inductor coupled in series to a signal line transmitting the high-frequency signal, a first variable capacitor coupled between a power supply line and a node of the first inductor and the second inductor, and a second variable capacitor coupled between the signal line and the power supply line.