A differential and common mode filter for an inverter, comprising an inductor having a core. The core comprises: an upper yoke and a lower yoke which comprise a first magnetic material; a first leg, a second leg and a third leg which extend between the upper and lower yokes and around which a first coil, a second coil, and a third coil are arranged, respectively, wherein at least one portion of the first, second and third legs, when seen in a transverse cross section, is made of one second magnetic material, and wherein the first magnetic material has a magnetic permeability higher than the second magnetic material; at least one unwound leg extending between the upper and lower yokes.

An impedance matching circuit for an amplifier can include a first coil and a second coil configured as an autotransformer. A first end of the first coil can be configured to connect to a voltage source for the amplifier, and a second end of the first coil can be connected to an output of the amplifier. A first end of the second coil can be connected to the second end of the first coil, and a second end of the second coil can be connected to an output node. The impedance matching circuit can also include a capacitor connected to the second end of the first coil.

A multilayer body includes a first inductor and a second inductor provided in a first planar region, and a third inductor and a fourth inductor provided in a second planar region when viewed in a lamination direction of dielectric layers of the multilayer body. When the multilayer body is viewed in a direction perpendicular or substantially perpendicular to the lamination direction of the dielectric layers, the first inductor L1 and the fourth inductor are provided in a first thickness region, and the second inductor and the third inductor are provided in a second thickness region

A multilayer LC filter includes a magnetic coupling adjustment inductor for at least one LC resonator. The magnetic coupling adjustment inductor includes a line conductor pattern and a first via conductor connected to each other. The line conductor pattern is connected to an intermediate point of a second via conductor, and the first via conductor is connected to a ground conductor pattern. A loop inductor and the magnetic coupling adjustment inductor in the LC resonator for which the magnetic coupling adjustment inductor is provided are magnetically coupled to a loop inductor in another adjacent LC resonator.

An electronic component includes two or more first parallel resonators arranged in an orthogonal direction orthogonal or substantially orthogonal to a lamination direction, each first LC parallel resonator including a first inductor and a first capacitor, two second LC parallel resonators surrounding the two or more first LC parallel resonators from both sides in the orthogonal direction, each second LC parallel resonator including a second inductor and a second capacitor, a second capacitor connected to one end of the two second LC parallel resonators, and a first connecting conductor that connects two of the first LC parallel resonators that are not adjacent in the orthogonal direction, or connects one of the first LC parallel resonators and one of the second LC parallel resonators that are not adjacent in the orthogonal direction.

A radio-frequency transceiver circuit, comprising: a first port and a second port, configured to receive, together, a pair of differential signals; a radio-frequency matching circuit communicatively coupled to the first port and the second port, and configured to process the pair of differential signals to obtain a radio-frequency signal and configured to increase transmission power for the radio-frequency signal, wherein the radio-frequency matching circuit includes at least one capacitor, at least one distributed inductor; a band pass filter circuit, communicatively coupled to the radio-frequency matching circuit and configured to filter the radio-frequency signal, wherein the band pass filter circuit includes at least one capacitor and at least one distributed inductor; and a third port, communicatively coupled to the band pass filter circuit and configured to output the filtered radio-frequency signal, wherein both of the at least one distributed inductors have a length of microstrip line.

A filter circuit is provided which allows the pass band to be tuned to a desired communication signal while achieving increased attenuation in a given frequency band that lies outside the pass band. A filter circuit includes a fixed filter and a tunable filter. The fixed filter has a pass band wider than a frequency band corresponding to a predetermined communication signal and overlapping with the frequency band corresponding to the communication signal. The tunable filter has a stop band narrower than the pass band of the fixed filter and having tunable frequency. The fixed filter and the tunable filter are connected in series.

A high performance integrated tunable impedance matching network with coupled merged inductors. Embodiments include a combination of merged multiport constructively coupled spiral inductors and tunable capacitors configured to reduce insertion losses, circuit size, and optimization time while maintaining a high Q factor for the coupled spiral inductors. Some embodiments integrate one or more filter circuits with a tunable impedance matching network, useful in conjunction with such applications as radio frequency power amplifiers.

A band pass filter includes parallel resonators. An inductor of a first parallel resonator at an intermediate stage is divided into a first inductor and a second inductor connected in parallel with each other. The first inductor and an inductor of a second parallel resonator are in magnetic coupling with each other, and the second inductor and an inductor of a third parallel resonator are in magnetic coupling with each other.

An electronic component includes a second inductor including a second inductor conductor that includes a first coupling portion electrically coupled to a second capacitor conductor and a second coupling portion electrically coupled to a second ground conductor, and when viewed in a plan view from a lamination direction, a first region surrounded by a first inductor conductor and the second inductor conductor is smaller in area than a second region surrounded by a third inductor conductor layer and the second inductor conductor, and a second region forming portion, which is included in the second inductor conductor and surrounds the second region, and a first region forming portion, which is included in the second inductor conductor and surrounds the first region, are electrically coupled in series in this order on a path from the first coupling portion to the second coupling portion.