Abstract: An integrated transformer is provided. The integrated transformer includes a first inductor and second inductors. The first inductor includes a first winding having a first outer turn and a second winding having a second outer turn. The second inductor includes a third winding having a third outer turn and a fourth winding having a fourth outer turn. The first and third outer turns substantially overlap, and the second and fourth outer turns substantially overlap. The first and second outer turns are connected to each other through a first segment and a second segment that together form a crossing structure, and the third and fourth outer turns are connected to each other through a third segment and a fourth segment that together form a crossing structure. The first and third segments are in the first metal layer, while the second and fourth segments are in the second metal layer.

Abstract: A power amplifier includes a power switching circuit, a driver circuit, and an amplifier circuit. The power switching circuit is configured to receive a first voltage and a second voltage, and provide the first voltage or the second voltage according to an operation mode of the power amplifier. The driver circuit is coupled to the power switching circuit. The driver circuit is configured to operate according to the first voltage or the second voltage and generate a driving signal according to an input signal. The amplifier circuit is coupled to the power switching circuit and the driver circuit. The amplifier circuit is configured to operate according to the first voltage or the second voltage and generate an output signal according to the driving signal.

Abstract: An inductor device includes a first and a second inductor and a first and a second connection member. A first and a second trace of the first inductor is located on a first and a second layer respectively. The second trace is coupled to the first trace located at a first and a second area. The first connection member is coupled to the second trace. A third and a fourth trace of the second inductor is located on the first and the second layer respectively. The first trace and the third trace are disposed in turn at the first area and the second area. The fourth trace is coupled to the third trace located at the first and the second area. The second and the fourth trace are disposed in turn at the first and the second area. The second connection member is coupled to the fourth trace.

Abstract: The present invention provides a transmitter including a mixer, a harmonic impedance adjustment circuit and an amplifier. The mixer is configured to mix a first baseband signal with a first oscillation signal to generate a first mixed signal to a first node, and to mix a second baseband signal with a second oscillation signal to generate a second mixed signal to a second node. The harmonic impedance adjustment circuit is coupled between the first node and the second node, and is configured to reduce harmonic components of the first mixed signal and the second mixed signal to generate an adjusted first mixed signal and an adjusted second mixed signal. The amplifier is coupled to the harmonic impedance adjustment circuit, and is configured to generate an amplified signal according to the adjusted first mixed signal and the adjusted second mixed signal.

Abstract: An inductor device includes an 8-shaped inductor structure, a first spiral wire, a first connector, a second connector, and a first interlaced component. The 8-shaped inductor structure includes two first-wires and two second-wires. The first spiral wire is disposed on an inner side of the two first-wires. The first connector is coupled to one of the two first-wires and one of the two second-wires. The second connector is coupled to another one of the two first-wires. The first interlaced component is coupled to the first spiral wire and another one of the two second-wires, and the first interlaced component is coupled to the first connector and the second connector in an interlaced manner respectively.

Abstract: A semiconductor device includes a first coil, a second coil, and a third coil. The second coil is disposed with respect to the first coil. The third coil is configured to sense a signal on the first coil. A first overlapped area, on a projection plane, of the third coil and the first coil is larger than a second overlapped area, on the projection plane, of the third coil and the second coil.

Abstract: An inductor device includes a first wire, a second wire, at least one first connector, at least one second connector, and a first center-tapped terminal. The first wire includes a plurality of first sub-wires. The second wire includes a plurality of second sub-wires. The first sub-wires and the second sub-wires are disposed in an interlaced manner. The at least one first connector couples the first sub-wire that is disposed on an outer side and the first sub-wire that is disposed on an inner side in the first sub-wires. The at least one second connector couples the second sub-wire that is disposed on the outer side and the second sub-wire that is disposed on the inner side in the second sub-wires. The first center-tapped terminal is coupled to the first sub-wire that is disposed on the outer side in the first sub-wires.

Abstract: An integrated transformer is provided. The integrated transformer includes a first inductor and second inductors. The first inductor includes a first winding having a first outer turn and a second winding having a second outer turn. The second inductor includes a third winding having a third outer turn and a fourth winding having a fourth outer turn. The first and third outer turns substantially overlap, and the second and fourth outer turns substantially overlap. The first and second outer turns are connected to each other through a first segment and a second segment that together form a crossing structure, and the third and fourth outer turns are connected to each other through a third segment and a fourth segment that together form a crossing structure. The first and third segments are in the first metal layer, while the second and fourth segments are in the second metal layer.

Abstract: An inductor device includes first trace, second trace, third trace, fourth trace, first capacitor, and second capacitor. One terminal of each of the at least two sub-traces of first trace are coupled to each other at first node. One terminal of each of the at least two sub-traces of second trace are coupled to each other at second node. One terminal of third trace is coupled to second trace, and another terminal of third trace is coupled to first input/output terminal. One terminal of fourth trace is coupled to first trace, and another terminal of fourth trace is coupled to second input/output terminal. First capacitor is coupled to first node and second node. Second capacitor is coupled between first node and first input/output terminal, or coupled between first node and second input/output terminal, or coupled between first input/output terminal and second input/output terminal.

Abstract: An amplifier device includes a regulator circuit, a first voltage converting circuit, a first control circuit, and an amplifier circuit. The regulator circuit is configured to output a first driving voltage. The first voltage converting circuit is coupled to the regulator circuit, and is configured to output one of the first driving voltage and at least one first voltages related to the first driving voltage, as a first operating voltage. The first control circuit is coupled to the first voltage converting circuit through a first node, and is configured to receive the first operating voltage and generate a first operating signal according to the first operating voltage and a first control signal. The amplifier circuit is coupled to the first control circuit and the regulator circuit, and is configured to receive the first driving voltage, and is controlled by the first operating signal to generate an output voltage.

Abstract: A double 8-shaped inductive device includes a first 8-shaped coil, a second 8-shaped coil, and a connection structure. The first 8-shaped coil includes a first connecting terminal. The second 8-shaped coil includes a second connecting terminal, which the first 8-shaped coil and the second 8-shaped coil are to be disposed side by side on two sides of a first imaginary line. The connection structure electrically couples to the first connecting terminal and the second connecting terminal, such that the first 8-shaped coil and the second 8-shaped coil form a connected circuit, and the first 8-shaped coil and the second 8-shaped coil include a loop respectively.

Abstract: A transformer device includes a first coil and a second coil. The first coil includes a number of first circles. The second coil includes a number of second circles. A first side of a first one of the first coil is adjacent to one of the first coil, and a second side of the first one of the first coil is adjacent to one of the second coil. A first side and a second side of a second one of the first coil are adjacent to one of the second coil, respectively.

Abstract: An inductor device includes a first inductor and a second inductor. The first inductor has a first winding and a second winding. The second inductor has a third winding and a fourth winding, and the second inductor is disposed adjacent to the first inductor, and the second inductor is coupled to the first inductor in an interlaced manner.

Abstract: An amplifier circuit includes a multistage amplifier, a first feedback circuit and a second feedback circuit. The multistage amplifier includes a first-staged amplifier, a last-staged amplifier and at least one middle-staged amplifier cascaded between the first-staged amplifier and the last-staged amplifier. The first feedback circuit is configured to couple a positive output end of the last-staged amplifier to a positive input end of the at least one middle-staged amplifier, or is configured to couple a negative output end of the last-staged amplifier to a negative input end of the at least one middle-staged amplifier. The second feedback circuit is configured to couple the positive output end of the last-staged amplifier to a positive input end of the last-staged amplifier, or is configured to couple the negative output end of the last-staged amplifier to a negative input end of the last-staged amplifier.

Abstract: An oscillation circuit including an amplifier, a feedback resistor and a first switch circuit is provided. The amplifier inverts and amplifies an oscillation signal received from an input terminal thereof to provide an output oscillation signal at an output terminal thereof. The feedback resistor is coupled between the input terminal and the output terminal, and coupled with the first switch circuit in parallel. The first switch circuit conducts the input terminal to the output terminal in one of the following situations: (1) an input voltage of the oscillation signal is higher than an output voltage of the output oscillation signal by at least a first threshold value; and (2) the output voltage is higher than the input voltage by at least a second threshold value. The first switch circuit has a first on-state resistance smaller than a resistance of the feedback resistor.

Abstract: An inductor device includes a first trace, a second trace, and a double ring inductor. The first trace is disposed at a first area. The second trace is disposed at a second area. The double ring inductor is located at an outside of the first trace and the second trace. The double ring inductor is respectively coupled to the first trace and the second trace in an interlaced manner.

Abstract: The present invention discloses a signal output circuit having anti-interference mechanism. An amplifier is electrically coupled to a power supply and a ground terminal through a first and a second amplifier bond wires, and generates an amplified output signal. A transformer circuit includes a transformer performing impedance transformation on the amplified output signal to generate a transformed output signal and a voltage-stabilizing capacitor suppressing second-order harmonics of the amplifier. A power-terminal side anti-interference circuit includes a power-terminal side bond wire and a power-terminal side anti-interference capacitor. The power-terminal side bond wire is electrically coupled to the ground terminal.

Abstract: An oscillation circuit including an amplifier, a feedback resistor and a first switch circuit is provided. The amplifier inverts and amplifies an oscillation signal received from an input terminal thereof to provide an output oscillation signal at an output terminal thereof. The feedback resistor is coupled between the input terminal and the output terminal, and coupled with the first switch circuit in parallel. The first switch circuit conducts the input terminal to the output terminal in one of the following situations: (1) an input voltage of the oscillation signal is higher than an output voltage of the output oscillation signal by at least a first threshold value; and (2) the output voltage is higher than the input voltage by at least a second threshold value. The first switch circuit has a first on-state resistance smaller than a resistance of the feedback resistor.

Abstract: An integrated transformer includes a first and second inductors. The first inductor includes a first and second windings. The second inductor includes a third and fourth windings. The first, second, third and fourth windings have a first, second, third and fourth outer turn, respectively. At least one segment of the first (or second) outer turn substantially overlaps at least one segment of the third (or fourth) outer turn. The first and second outer turns are connected through a first segment and a first trace that cross each other, and the third and fourth outer turns are connected through a second trace and a second segment that cross each other. The first trace and the second segment are on the first metal layer, and the first segment and the second trace are on the second metal layer different from the first metal layer.

Abstract: A patterned shielding structure is disposed between an inductor structure and a substrate. The patterned shielding structure includes a shielding layer and a first stacked structure. The shielding layer extends along a plane. The first stacked structure is stacked, along a first direction, on the shielding layer. The first direction is perpendicular to the plane. The first stacked structure has a crossed shape and is configured to enhance a shielding effect.