A capacitive element using a liquid as a dielectric, whereby the capacitance is prevented from changing. The capacitive element is equipped with: a storage container that has an inlet port for introducing a liquid serving as a dielectric, has an outlet port for discharging the liquid, and is filled with the liquid; and at least one pair of electrodes that are provided in the storage container and face each other, wherein an opening section for exhausting air bubbles in the storage container is formed in an upper wall of the storage container.

A rotating capacitor is used in a circular accelerator that accelerates a charged particle beam by feeding a first radio frequency to a DC main magnetic field. The rotating capacitor modulates a frequency of the first radio frequency. The rotating capacitor includes a stator electrode and a rotor electrode used for modulating the frequency of the first radio frequency together with the stator electrode. A vacuum seal performs vacuum sealing around a shaft for rotating the rotor electrode. A bearing that supports the shaft is installed on an atmosphere side.

A low radio frequency electro-mechanical load pull impedance tuner uses four rotary, remotely controlled variable shunt capacitors and three fixed series transmission lines to create up to 10.sup.8 independently controllable impedance states at each frequency covering the entire Smith chart in the frequency range between 1 and 10 MHz; the capacitors and control motors and gear are immersed in high epsilon dielectric fluid inside individual sealed containers. Appropriate Error Function-based optimization algorithms, allow fast impedance tuning at the fundamental frequency at the output of DUT's operated in high gain compression. Stepper motors, drivers and control software are used to remotely control the variable shunt capacitors of the tuner and allow it to be automated, pre-calibrated and used in an automated load pull measuring setup.

A low radio frequency electro-mechanical load pull impedance tuner uses four rotary, remotely controlled variable shunt capacitors and three fixed series transmission lines to create up to 10.sup.8 independently controllable impedance states at each frequency covering the entire Smith chart in the frequency range between 1 and 10 MHz; the capacitors and control motors and gear are immersed in high epsilon dielectric fluid inside individual sealed containers. Appropriate Error Function-based optimization algorithms, allow fast impedance tuning at the fundamental frequency at the output of DUT's operated in high gain compression. Stepper motors, drivers and control software are used to remotely control the variable shunt capacitors of the tuner and allow it to be automated, pre-calibrated and used in an automated load pull measuring setup.

A capacitive element using a liquid as a dielectric, whereby the capacitance is prevented from changing. The capacitive element is equipped with: a storage container that has an inlet port for introducing a liquid serving as a dielectric, has an outlet port for discharging the liquid, and is filled with the liquid; and at least one pair of electrodes that are provided in the storage container and face each other, wherein an opening section for exhausting air bubbles in the storage container is formed in an upper wall of the storage container.

A capacitive alternator is disclosed. The capacitive alternator includes a frame with a shaft rotatably coupled to and extending through the frame. The capacitive alternator includes a stator housed within the frame. The stator includes a plurality of stator electrodes arranged in respective first and second stator assemblies. The stator electrodes in the respective stator assemblies are in electrical communication with one another. The capacitive alternator includes a rotor supported on and fixedly attached to the shaft such that a rotation of the shaft causes a corresponding rotation of the rotor. The rotor includes a dipole assembly, including a first dipole electrode, and a second dipole electrode. The first and second dipole electrodes are electrically isolated from one another, from the shaft, and from the stator electrodes. The dipole assembly is rotatable relative to one of the plurality of stator electrodes.

A capacitor assembly includes a capacitor having ends. A terminal covers less than an area of one end. A wire bond has opposing ends with one end being coupled to the terminal and is configured to break connection with a circuit when an electrical current through the wire bond reaches a fusing current. An energy storage module includes at least two capacitor assemblies. The wire bond of one capacitor is electrically connected to the second terminal of an adjacent capacitor. An energy storage assembly includes two energy storage modules stacked one on top of the other. A pulse forming network includes conductors and at least two energy storage modules. A method of making a module includes charging each of the capacitors, removing each capacitor that fails, connecting one end of a wire bond to one terminal and connecting the other end to an adjacent capacitor or to a conductor.

A multi-band, electro-mechanical programmable impedance tuner for the frequency range between 10 and 200 MHz uses cascades of three or more continuously variable mechanical capacitors interconnected with sets of low loss flexible or semi-rigid cables; for each frequency band a different set of cables and capacitors are used. The cables and/or variable capacitors inside each tuning block are switchable manually or remotely. Multi-section variable capacitors are also used. Instantaneous impedance tuning is effectuated by changing the state of the capacitors using electrical stepper motors. The tuner is calibrated using a vector network analyzer and the data are saved in the memory of the control computer, which then allows tuning to any user defined impedance within the tuning range. Reflection factor values between 0 and higher than 0.9 can be obtained using this tuner at all frequency bands.

A multi-band, electro-mechanical programmable impedance tuner for the frequency range between 10 and 200 MHz uses cascades of three or more continuously variable mechanical capacitors interconnected with sets of low loss flexible or semi-rigid cables; for each frequency band a different set of cables and capacitors are used. The cables and/or variable capacitors inside each tuning block are switchable manually or remotely. Multi-section variable capacitors are also used. Instantaneous impedance tuning is effectuated by changing the state of the capacitors using electrical stepper motors. The tuner is calibrated using a vector network analyzer and the data are saved in the memory of the control computer, which then allows tuning to any user defined impedance within the tuning range. Reflection factor values between 0 and higher than 0.9 can be obtained using this tuner at all frequency bands.

The present disclosure provides an adjustable capacitor and an electronic apparatus, and relates to the technical field of radio frequency device. The adjustable capacitor of the present disclosure includes a base substrate and at least one capacitor unit on the base substrate, each of the at least one capacitor unit includes a first plate, a second plate and a first connecting arm; the first plate and the connecting arm are on the base substrate; one end of the second plate is connected to the first connecting arm, the second plate and the first plate are opposite to each other, and a certain distance is between the second plate and the first plate.