Abstract: A phase and amplitude controlled oscillation device is configured in such a manner that a first controller and a second controller control a phase of a combined output wave obtained by a combiner by performing control to shift phases of respective oscillation frequencies of a first oscillator and a second oscillator in the same direction, and control an amplitude of the combined output wave obtained by the combiner by performing control to shift the phases of the respective oscillation frequencies of the first oscillator and the second oscillator in opposite directions.

Abstract: A directional coupler is configured so as to include: a resistive element in which one end thereof is connected to a first terminal and the other end is connected to a second terminal; a first amplifier circuit for outputting either a current directly proportional to a first voltage applied to the one end of the resistive element or a current directly proportional to a second voltage applied to the other end of the resistive element; a second amplifier circuit for outputting a first current which is directly proportional to the voltage difference between the first voltage applied to the one end of the resistive element and the second voltage applied to the other end of the resistive element and whose polarity is different from that of the current outputted from the first amplifier circuit when a signal is flowing from the first terminal to the second terminal, and for outputting a second current which is directly proportional to the voltage difference between the first voltage and the second voltage and whose

Abstract: A first input terminal is connected to a point of connection of a drain terminal of a first transistor and a gate terminal of a fourth transistor. A second input terminal is connected to a point of connection of a drain terminal of a third transistor and a gate terminal of a second transistor. One of first through fourth output terminals to is connected to a source terminal of each of the first through fourth transistors to. A gate terminal of the first transistor and a drain terminal of the second transistor are connected, and a gate terminal of the third transistor and a drain terminal of the fourth transistor are connected.

Abstract: A rectenna controller connected to a rectenna that receives radio frequency power and converts the radio frequency power into direct current power, the rectenna controller controlling the direct current power received from the rectenna and supplying the controlled direct current power to a load, the rectenna controller including: an input terminal receiving the direct current power converted by the rectenna; an output terminal supplying the controlled direct current power to the load; a first switching element disposed in a current path connecting the input terminal to the output terminal; and a controller controlling the first switching element, wherein when the controller does not operate, the first switching element becomes conducting to render the current path conductive.

Abstract: A first phase shift circuit (2) converts impedance to achieve impedance matching between a third terminal (1c) of a 90-degree hybrid circuit (1) and a first terminal (4a) of a first nonlinear element (4), and shifts a phase of a radio wave by 180 degrees, and a second phase shift circuit (3) converts impedance to achieve impedance matching between a fourth terminal (1d) of the 90-degree hybrid circuit (1) and a first terminal (5a) of a second nonlinear element (5), and shifts a phase of a radio wave by 90 degrees. As a result of this configuration, a conversion loss of radio waves can be reduced.

Abstract: A phase and amplitude controlled oscillation device is configured in such a manner that a first controller and a second controller control a phase of a combined output wave obtained by a combiner by performing control to shift phases of respective oscillation frequencies of a first oscillator and a second oscillator in the same direction, and control an amplitude of the combined output wave obtained by the combiner by performing control to shift the phases of the respective oscillation frequencies of the first oscillator and the second oscillator in opposite directions.

Abstract: A first input terminal is connected to a point of connection of a drain terminal of a first transistor and a gate terminal of a fourth transistor. A second input terminal is connected to a point of connection of a drain terminal of a third transistor and a gate terminal of a second transistor. One of first through fourth output terminals to is connected to a source terminal of each of the first through fourth transistors to. A gate terminal of the first transistor and a drain terminal of the second transistor are connected, and a gate terminal of the third transistor and a drain terminal of the fourth transistor are connected.

Abstract: The rectifying device converts high-frequency power input from an input terminal into direct current power and outputs the direct current power from an output terminal. The rectifying device includes a rectifier that converts the high-frequency power into the direct current power, and an impedance changer having one end connected to a connection point of the rectifier and the output terminal and the other end to which reference voltage is applied such that impedance varies while having a negative correlation with respect to an absolute value of voltage of the direct current power. When the absolute value of the voltage of the direct current power is greater than a predetermined value that is lower than reverse withstand voltage of the rectifying element included in the rectifier, the impedance of the impedance changer as viewed from the rectifier is a value regarded as corresponding to a short circuit.

Abstract: A first switch is connected in parallel with a circuit element. A second switch is connected in series with a parallel circuit constituted by the circuit element and the first switch. The first switch and the second switch alternately perform on-off operation.

Abstract: A first resistor to a fourth resistor and a first capacitor to a fourth capacitor are connected together in series in a ring shape. A first output terminal to a fourth output terminal are connected to series connection points between the first resistor to the fourth resistor and the first capacitor to the fourth capacitor, a first input terminal is connected to a series connection point between the fourth capacitor and the first resistor, and a second input terminal is connected to a series connection point between the second capacitor and the third resistor. Furthermore, a fifth resistor is connected between a series connection point between the first capacitor and the second resistor and a series connection point between the third capacitor and the fourth resistor.

Abstract: The rectifying device converts high-frequency power input from an input terminal into direct current power and outputs the direct current power from an output terminal. The rectifying device includes a rectifier that converts the high-frequency power into the direct current power, and an impedance changer having one end connected to a connection point of the rectifier and the output terminal and the other end to which reference voltage is applied such that impedance varies while having a negative correlation with respect to an absolute value of voltage of the direct current power. When the absolute value of the voltage of the direct current power is greater than a predetermined value that is lower than reverse withstand voltage of the rectifying element included in the rectifier, the impedance of the impedance changer as viewed from the rectifier is a value regarded as corresponding to a short circuit.

Abstract: A high voltage rectifier includes: a power divider (2) dividing power of high-frequency wave RF to be rectified; a capacitor (3) cutting-off direct current flowing between the power divider (2) and a first rectifier (10): and a capacitor (4) cutting-off direct current flowing between the power divider (2) and a second rectifier (20). The first rectifier (10) generates a direct-current voltage DC1 by rectifying a high-frequency wave RF1 output from the power divider (2), and outputs the direct-current voltage DC1 to one end of a load (7). The second rectifier (20) generates a direct-current voltage DC2 having a different polarity from that of the direct-current voltage DC1 by rectifying high-frequency wave RF2 output from the power divider (2), and outputs the direct-current voltage DC2 to the other end of the load (7).

Abstract: The rectifying device converts high-frequency power input from an input terminal into direct current power and outputs the direct current power from an output terminal. The rectifying device includes a rectifier that converts the high-frequency power into the direct current power, and an impedance changer having one end connected to a connection point of the rectifier and the output terminal and the other end to which reference voltage is applied such that impedance varies while having a negative correlation with respect to an absolute value of voltage of the direct current power. When the absolute value of the voltage of the direct current power is greater than a predetermined value that is lower than reverse withstand voltage of the rectifying element included in the rectifier, the impedance of the impedance changer as viewed from the rectifier is a value regarded as corresponding to a short circuit.

Abstract: A circuit includes: a first line (11) in which one end thereof (11a) is coupled to a first signal input terminal (la); a second line (12) in which one end thereof (12a) is grounded and the other end thereof (12b) is coupled to a first signal output terminal (4a), the second line (12) being electromagnetically coupled to the first line (11); a third line (13) in which one end thereof (13a) is open, the third line (13) being electromagnetically coupled to the second line (12); a fourth line (21) in which one end thereof (21a) is coupled to the other end (11b) of the first line (11) and the other end thereof (21b) is open; a fifth line (22) in which one end thereof (22a) is coupled to a second signal output terminal (4b) and the other end thereof (22b) is grounded, the fifth line (22) being electromagnetically coupled to the fourth line (21); and a sixth line (23) in which one end thereof (23a) is coupled to the other end (13b) of the third line (13) and the other end thereof (23b) is coupled to a second signal

Abstract: A first balanced/unbalanced circuit is provided that splits a first mixed wave outputted from an even harmonic mixer into first and second split signals, outputs the first split signal that is in phase with the first mixed wave to a first output terminal, and outputs the second split signal that is opposite in phase to the first mixed wave to a second output terminal. Further, a second balanced/unbalanced circuit is provided that splits a second mixed wave outputted from the even harmonic mixer into third and fourth split signals, outputs the third split signal that is in phase with the second mixed wave to the second output terminal, and outputs the fourth split signal that is opposite in phase to the second mixed wave to the first output terminal.

Abstract: There is provided a polyphase filter (5) that generates first differential signals from first signals amplified by a first transistor (2-1), outputs the first differential signals from a first output terminal (5-1) and a third output terminal (5-3), generates second differential signals from second signals amplified by a second transistor (2-2), and outputs the second differential signals from the first output terminal (5-1) and the third output terminal (5-3).

Abstract: A printed wiring board includes conductor layers, a core layer having an opening, and a build-up layer. A high frequency device placed within the opening is installed such that a mirror surface is thermally connected to a conductor layer for heat dissipation facing the opening from a lower surface side of the core layer, and terminals on the terminal surface are electrically connected to conductor layers formed on an upper surface side of the core layer.

Abstract: A high voltage rectifier includes: a power divider (2) dividing power of high-frequency wave RF to be rectified; a capacitor (3) cutting-off direct current flowing between the power divider (2) and a first rectifier (10): and a capacitor (4) cutting-off direct current flowing between the power divider (2) and a second rectifier (20). The first rectifier (10) generates a direct-current voltage DC1 by rectifying a high-frequency wave RF1 output from the power divider (2), and outputs the direct-current voltage DC1 to one end of a load (7). The second rectifier (20) generates a direct-current voltage DC2 having a different polarity from that of the direct-current voltage DC1 by rectifying high-frequency wave RF2 output from the power divider (2), and outputs the direct-current voltage DC2 to the other end of the load (7).

Abstract: A printed wiring board includes conductor layers, a core layer having an opening, and a build-up layer. A high frequency device placed within the opening is installed such that a mirror surface is thermally connected to a conductor layer for heat dissipation facing the opening from a lower surface side of the core layer, and terminals on the terminal surface are electrically connected to conductor layers formed on an upper surface side of the core layer.

Abstract: An image rejection mixer and a communication device, which may suppress unwanted frequency components of a high power output assuming a fourth-order harmonic mixer. The image rejection mixer and communication device include first and second fourth-order harmonic mixers, a 90-degree IF synthesis distributor, a 90-degree LO distributor, and a 90-degree RF synthesis distributor. Use of the 90-degree distributors for LO distribution of the fourth-order harmonic image rejection mixer suppresses the unwanted frequency components of the high power output.