An electrical power conditioning device for transmitting energy between a source and a load includes an inner conductor that extends within a grounded outer conductor. A low-pass filter extends between the inner and outer conductors and is designed to attenuate high frequency energy transmitted by the inner conductor. The low-pass filter includes at least one capacitor array which comprises multiple capacitor sectors mounted on a common a printed circuit board in a radial arrangement, each sector including a T-shaped configuration of ceramic capacitors to provide operational redundancy. Additionally, a voltage suppressor extends between the inner and outer conductor and suppresses transient voltages transmitted by the inner conductor. The suppressor includes a pair of printed circuit boards between which a plurality of diodes extend in a circular array around the inner conductor, the printed circuit boards electrically connecting the diodes in series to allow for higher overall pulse current capabilities.

An integrated isolator circuit for isolating receiver and transmitter in a Time-Division Duplex transceiver is disclosed. The integrated isolator circuit comprises a first node, a second node and a third node. The integrated isolator circuit further comprises a fist capacitor connected in series with a first switch and connected between the first and second nodes. The integrated isolator circuit further comprises a first inductor connected between the first and second nodes and a second capacitor connected between the second node and the third node. The first switch has an on state and an off state, and the integrated isolator circuit is configured to have a different impedance at a certain operating frequency by controlling the state of the first switch.

Provided is a filter device to be connected between an AC power source (1) and a PWM converter (2), which includes a first AC reactor (3), a second AC reactor (4) that is connected between the PWM converter (2) and the first AC reactor (3), a filter capacitor (5) whose one end is connected to a connecting portion (9) between the first AC reactor (3) and the second AC reactor (4), and a housing (15) having a cooling air inlet (16) and a cooling air outlet (17) and containing the first AC reactor (3) and the second AC reactor (4), wherein the first AC reactor (3) is disposed upwind of the second AC reactor (4).

A positive electrode side input loop line (10a) and a positive electrode side output loop line (10b), and a negative electrode side input loop line (11a) and a negative electrode side output loop line (11b) form two sets of coupling loops, and the loop lines of the two sets have the same winding direction, and have the same loop sizes of and relative relationship between the loop lines. A capacitor (3) is connected in series between the positive electrode side input loop line (10a) and the negative electrode side input loop line (11a).

An amplifier circuit includes an input port, an output port, and a reference potential port, an RF amplifier device having an input terminal electrically coupled to the input port, an output terminal electrically coupled to the output port, and a reference potential terminal electrically coupled to the reference potential port. An impedance matching network is electrically connected to the output terminal, the reference potential port, and the output port. The impedance matching network includes a reactive efficiency optimization circuit that forms a parallel resonant circuit with a characteristic output impedance of the peaking amplifier at a center frequency of the fundamental frequency range. The impedance matching network includes a reactive frequency selective circuit that negates a phase shift of the RF signal in phase at the center frequency and exhibits a linear transfer characteristic in a baseband frequency range.

An amplifier circuit includes an input port, an output port, and a reference potential port, an RF amplifier device having an input terminal electrically coupled to the input port, an output terminal electrically coupled to the output port, and a reference potential terminal electrically coupled to the reference potential port. An impedance matching network is electrically connected to the output terminal, the reference potential port, and the output port. The impedance matching network includes a reactive efficiency optimization circuit that forms a parallel resonant circuit with a characteristic output impedance of the peaking amplifier at a center frequency of the fundamental frequency range. The impedance matching network includes a reactive frequency selective circuit that negates a phase shift of the RF signal in phase at the center frequency and exhibits a linear transfer characteristic in a baseband frequency range.

A multilayer electronic component includes a multilayer body including insulator layers that are stacked, linear conductor traces each provided between adjacent ones of the insulator layers, and via conductors. A helical or substantially helical inductor is provided in the multilayer body. When viewed in the stacking direction of the multilayer body, all of the linear conductor traces, except a portion of one linear conductor trace, are superimposed within an annular or substantially annular linear conductor trace region. The portion of the one linear conductor trace is displaced inwardly from the annular or substantially annular linear conductor trace region.

A filtering circuit includes at least two common-mode filters that are electrically coupled in series and magnetically coupled. The first common-mode filter includes first and second spiral inductors that are positively magnetically coupled and electrically isolated from each other. The second common-mode filter includes third and fourth spiral inductors that are positively magnetically coupled and electrically isolated from each other. The first and third spiral inductors are electrically connected in series and negatively magnetically coupled. Likewise, the second and fourth spiral inductors are electrically connected in series and negatively magnetically coupled.

An amplifier circuit includes an input port, an output port, and a reference potential port, an RF amplifier device having an input terminal electrically coupled to the input port, an output terminal electrically coupled to the output port, and a reference potential terminal electrically coupled to the reference potential port. An impedance matching network is electrically connected to the output terminal, the reference potential port, and the output port. The impedance matching network includes a reactive efficiency optimization circuit that forms a parallel resonant circuit with a characteristic output impedance of the peaking amplifier at a center frequency of the fundamental frequency range. The impedance matching network includes a reactive frequency selective circuit that negates a phase shift of the RF signal in phase at the center frequency and exhibits a linear transfer characteristic in a baseband frequency range.

A filter arrangement for filtering parasitic induction currents may include an electrically conductive housing part that at least partly surrounds a cavity, an electric ground connection on the housing part for establishing an electric connection to an electric ground, a busbar in the cavity, and at least one electric filter component electrically connected between the busbar and the housing part and mechanically secured to the housing part and to the busbar. A voltage converter may include at least one such filter arrangement.