Abstract: The invention relates to a resonator circuit, the resonator circuit comprising a transformer comprising a primary winding and a secondary winding, wherein the primary winding is inductively coupled with the secondary winding, a primary capacitor being connected to the primary winding, the primary capacitor and the primary winding forming a primary circuit, and a secondary capacitor being connected to the secondary winding, the secondary capacitor and the secondary winding forming a secondary circuit, wherein the resonator circuit has a common mode resonance frequency at an excitation of the primary circuit in a common mode, wherein the resonator circuit has a differential mode resonance frequency at an excitation of the primary circuit in a differential mode, and wherein the common mode resonance frequency is different from the differential mode resonance frequency.

Abstract: A circuit can include a first sub-circuit, a second sub-circuit, and a third sub-circuit. The first sub-circuit can store a reset state or a set state, and can include a first Josephson junction (JJ), a second JJ, and a third JJ coupled in parallel using superconducting inductors. The first JJ, the second JJ, and the third JJ can be biased using a JJ-based current source. The second sub-circuit can switch the first sub-circuit to the set state in response to receiving a pulse. The third sub-circuit can switch the first sub-circuit to the reset state in response to receiving one or more pulses.

Abstract: A composite part (sandwich or monolithic), including a rigid outer surface, to which is integrated an electronic instrumentation circuit, the electronic instrumentation circuit including a piezoelectric transducer, connected to a coil, an electronic control circuit, connected to a coil positioned facing the coil. The coil is printed on an insulating layer, printed directly on the rigid outer surface, the coil is printed on an insulating layer, covering the coil and the transducer, conducting tracks are printed on an insulating layer printed on at least one portion of the coil to be connected to it, the electronic control circuit being attached to the rigid outer surface and being connected to the tracks.

Abstract: An oscillating element includes a substrate, negative resistance elements which are electrically connected to the substrate, antennas which are electrically connected one-to-one to each negative resistance element and which transmit or receive an electromagnetic wave, a pad electrically connected to a power supply source for supplying power to the antennas, and a conductor which electrically connects the pad and the antennas to each other. The conductor is constituted of a common wiring that is common to the antennas and individual wirings from the common wiring to each antenna. The individual wirings differ from each other with respect to a sectional area, resistivity, and a length in accordance with a position on the substrate of an antenna connected to each wiring to reduce a difference in wiring resistances caused based on a distance between the antenna connected to each wiring and the pad.

Abstract: Transformer based voltage controlled oscillator circuitry for phase-locked loop circuitry includes upper band circuitry and lower band circuitry. The upper band circuitry operates in a first frequency range and includes a first capacitor array having a variable capacitance. The lower band circuitry operates in a second frequency range and includes a second capacitor array having a variable capacitance. The first frequency range higher than the second frequency range. In a first operating mode, the first capacitor array has a first capacitance value and the second capacitor array has a second capacitance value. In a second operating mode, the second capacitor array has a third capacitance value different than the second capacitance value.

Abstract: The multi-modal imaging system, in particular for brain imaging, comprising a pump signal generator which emits at least one pump signal in the radio frequency (RF)-range with a first power P1 and a second power P2, a wireless detection unit, which comprises at least one parametric resonator circuit with multiple resonance modes, wherein the at least one parametric resonator circuit comprises at least two varactors, at least one capacitor and at least one inductance, wherein, in a first detection mode, the pump signal, having a first power P1, induces a first pump current in the at least one parametric resonator circuit, wherein the at least one parametric resonator circuit is operated below its oscillation threshold and generates a first output signal by amplifying a first input signal, which is provided due to a magnetic-resonance (MR) measurement, wherein an external receiving device receives the first output signal, wherein, in a second detection mode, the pump signal, having a second power P2, induces a

Abstract: An oscillator-based sensor interface circuit includes first and second input nodes arranged to receive first and second electrical signals representative of an electrical quantity, respectively; an analog filter; a first oscillator arranged to receive a first oscillator input signal and a second oscillator different from the first oscillator and arranged to receive a second oscillator input signal; a comparator arranged to compare signals coming from the first and second oscillators; a first feedback element arranged to receive a representation of the digital comparator output signal and to convert the representation into a first feedback signal to be applied to the oscillation means; a digital filter arranged to yield an output signal, being an filtered version of the digital comparator output signal; a second feedback element arranged to receive the output signal and to convert the output signal into a second feedback signal.

Abstract: A quartz crystal device includes a package, a pedestal, and a crystal element. The pedestal is disposed in the package. The crystal element is bonded to the pedestal at four points. An angle formed by a center line connecting midpoints of both short sides of the crystal element and a straight line connecting a center point of the center line and each of bonding points is 22° or more and 30° or less.

Abstract: A torque transmitter for a torque sensor for measuring a torque on a shaft includes a carrier plate that includes a plurality of sensor element carrier plate regions, on each of which at least one sensor element for recording magnetic field changes is arranged, and an enclosure region formed in a substantially annular shape to enclose the shaft around a circumference of the shaft. The plurality of sensor element carrier plate regions are perpendicularly connected to the enclosure region and arranged radially within the enclosure region by being spaced apart along a circumferential direction around the circumference of the shaft.

Abstract: An oscillator circuit includes a total of N (N?2) class-D oscillator circuits stacked together between a supply voltage node and a reference voltage node. The output ports of adjacent class-D oscillator circuits in the disclosed oscillator circuit are coupled together by capacitors to ensure frequency and phase synchronization for the frequency signals generated by the class-D oscillator circuits. Compared with a reference oscillator circuit formed of a single class-D oscillator circuit, the oscillation amplitude of each of the class-D oscillator circuits in the disclosed oscillator circuit is 1/N of that of the reference oscillator circuit, and the current consumption of the disclosed oscillator circuit is 1/N of that of the reference oscillator circuit.

Abstract: Systems and methods directed to a quantum processing apparatus are provided. The apparatus comprises M solid-state qubits, where M>1, and control electronics, which are connected to the solid-state qubits. The control electronics comprise one or more qubit readout circuits, where each of the qubit readout circuits is connected to at least one of the solid-state qubits and comprises a downsampling analog-to-digital converter (hereafter DSADC). Each DSADC is configured to downsample analog signals obtained from the at least one of the solid-state qubits. Such a DSADC operates in the nth Nyquist zone of the spectrum of the analog signals obtained, so as to down-convert such analog signals from the nth Nyquist zone to the mth Nyquist zone of the spectrum, where n>m?1, prior to sampling the analog signals to convert them into digital signals, in operation. One or more embodiments of the invention are further directed to a related method of operating such a quantum processing apparatus.

Abstract: The disclosed embodiments relate to the design of a system that implements a reflectarray antenna. The system includes a time-modulated metasurface, which is configured to act as a planar reflector for an electromagnetic wave that is radiated by a feeder into free space at an operation frequency f0. The time-modulated metasurface includes time-modulated unit-cells that provide a nonlinear conversion between f0 and another desired frequency fd. The system also includes a phase-delay mechanism, which adjusts a phase delay by acting on a phase applied to a modulation frequency fm that modulates each unit-cell. The nonlinear conversion and the phase-delay mechanism operate collectively to facilitate angle-independent nonreciprocity by imposing different phase gradients during up-conversion and down-conversion processes, and by preventing generation of certain propagative harmonics due to total internal reflection.

Abstract: A PLL circuit includes a phase comparator, an integrator path, a proportional path, a current controlled oscillator, a divider, and a double integrator path. The double integrator path includes an intermittent operation gm amplifier, a filter circuit, and a voltage-current conversion circuit. The intermittent operation gm amplifier receives an output voltage of a filter circuit. When a pulse CLK for an intermittent operation is ON, the intermittent operation gm amplifier outputs its voltage to the filter circuit. When the pulse CLK for the intermittent operation is OFF, the intermittent operation gm amplifier does not output the output voltage of the filter circuit to the filter circuit. Even when the pulse CLK for the intermittent operation is OFF, an input potential of the voltage-current conversion circuit is held by the filter circuit, and a current to the current controlled oscillator flows. This makes it possible to oscillate at a high frequency without increasing an area of the filter circuit.

Abstract: A quantum entanglement communication service can be provided by detecting a request to access data stored at a first computer. In response to detecting the data access request, a request can be generated to request that a server computer generate an entangled particle pair. Measurement data can be received, the measurement data corresponding to a measurement observed after interacting a first bit of a token stored at a second computer with a first entangled particle from the entangled particle pair. An operation to perform on a second entangled particle of the entangled particle pair at the first computer can be determined and performed. A state of the second entangled particle can be measured to obtain a value, and a bit string can be generated, where the bit string can include a number that corresponds to the value.

Abstract: An oscillator includes a tunable resonant circuit having an inductance and a variable capacitance coupled between first and second nodes, and a set of capacitances selectively coupleable between the first and second nodes. An input control node receiving an input control signal is coupled to the variable capacitance and set of capacitances. The tunable resonant circuit is tunable based on the input control signal. A biasing circuit biases the tunable resonant circuit to generate a variable-frequency output signal between the first and second nodes. A voltage divider generates a set of different voltage thresholds, and a set of comparator circuits with hysteresis compares the input control signal to the set of different voltage thresholds to generate a set of control signals. The capacitances in the set of capacitances are selectively coupleable between the first and second nodes as a function of control signals in the set of control signals.

Abstract: According to an aspect, a tank circuit in an integrated circuit comprising a plurality of metal strips forming a first part of a closed contour enclosing a first area, a set of split sections forming a second part and geometrically aligned with the closed contour, and a plurality of capacitors coupled between the split sections to form the tank circuit, wherein a first flux linkage due a current flowing in the set of split sections pass through the first area in the same direction as that of a second flux linkage due to the current flowing in the plurality of metal strips, and the set of split sections and the plurality of metal strips together forming an inductance coil.

Abstract: A vibrator device includes a semiconductor substrate, a vibrator element, a circuit element, a wiring, a processing circuit, and a through electrode. The semiconductor substrate has a first surface and an opposite-side second surface of the semiconductor substrate from the first surface. The vibrator element is provided at the first surface. The circuit element is provided at the first surface and includes an oscillation circuit. The wiring is provided at the first surface and electrically couples the vibrator element and the oscillation circuit. The processing circuit is provided at the second surface and processes an output signal of the oscillation circuit. The through electrode penetrates the semiconductor substrate and electrically couples the oscillation circuit and the processing circuit.

Abstract: The disclosed apparatus and method is a closed loop system that obtains, stores and transfers motive energy. Preferably, the majority of the electricity generated is utilized to service a load or supplied to the grid. A portion of the electric power produced is used to recharge the batteries for subsequent use of the electric motor. The system controls and manages the battery power by controlling the charging and discharging of the battery reservoir via a series of electrical and mechanical innovations controlled by electronic instruction using a series of devices to analyze, optimize and perform power production and charging functions in sequence to achieve its purpose.

Abstract: In the parallel operation of power supply units, a high line ripple current may be observed in output when the power supply units (PSUs) are supplied with different inputs. For example, a high line ripple current may be observed when PSUs were supplied with different line frequency inputs and/or when PSUs were supplied with different phase angle input lines. A low pass filter is in a control loop which is capable of filtering the line frequency to get an average current reference signal. The average current reference signal is compared with the real time output current to generate an error signal. This error signal is fed back to a voltage control loop to adjust the output in order to compensate the line ripple.

Abstract: Extra edges are added to a group of edges for use in decoding syndrome measurements of a surface code implemented using hybrid acoustic-electric qubits. The extra edges include two-dimensional cross-edges and three-dimensional space-time correlated edges that identify correlated errors arising from spurious photon dissipation processes of a multiplexed control circuit that leads to cross-talk between storage modes of a set of the mechanical resonators controlled by the given multiplexed control circuit. Additionally, error probabilities used for edge weighting incorporate error probabilities due to the spurious photon dissipation processes.