10results about "Broad-band transformers" patented technology

To achieve a transformer and a high-frequency module, capable of implementing a differential power amplification circuit supporting a higher frequency or output.SOLUTION: A transformer provided at a multilayer substrate 3 having a plurality of wiring layers laminated with a dielectric layer interposed therebetween includes a balanced-side coil 41 provided between a first terminal T1 and a second terminal T2, and an unbalanced-side coil 42 provided between a third terminal T3 and a fourth terminal T4. The balanced-side coil 41 is configured such that a first inductor L1 and a second inductor L2 provided at different ones of the wiring layers are connected in parallel. The unbalanced-side coil 42 is configured such that a third inductor L3 and a fourth inductor L4 provided at different ones of the wiring layers are connected in series.SELECTED DRAWING: Figure 3

An impedance adaptor is provided, including first and second transmission lines, each of which is provided by an arm and includes a first conductor and a second conductor. The transmission lines are arranged such that the first conductor of the first transmission line is adjacent and co-planar with the first conductor of the second transmission line, and the second conductor of the first transmission line is adjacent and co-planar with the second conductor of the second transmission line. A first end of the first conductor of the first transmission line is electrically coupled to a first end of the first conductor of the second transmission line. A first end of the second conductor of the first transmission line is electrically coupled to a first end of the second conductor of the second transmission line.

A digital isolator can include: a first die having one of an encoding circuit and a decoding circuit; a second die having one of the encoding circuit and the decoding circuit that is not in the first die, where the first die and the second die are separated from each other; and an isolated transmission structure configured to transmit an encoded signal generated by the encoding circuit to the decoding circuit.

The isolation transformer includes a transformer core (300). First and second through-holes (340, 342) extend through the transformer core from a first surface to a second surface. Each through-hole has an elongated profile, at least a portion of which provides a respective flat winding surface. The flat winding surfaces are spaced apart by a central portion of the transformer core. The transformer is wound with a six-wire cable having a central non-conductive core. The first, second, third, fourth, fifth, and sixth conductors are adjacently arranged around the central non-conductive core in a substantially equidistant angular relationship. The second conductor is disposed between the first and third conductors. The fifth conductor is disposed between the fourth and sixth conductors. The conductors are twisted around the central non-conductive core with a selected twist density. [Selected figure] Figure 3

A transformer has a first inductor that includes a first port. The transformer also has a second inductor magnetically coupled to the first inductor. The second inductor includes a second port. The second inductor includes a first portion configured to permit current flow in a clockwise direction and a second portion configured to permit current flow in a counter-clockwise direction. The transformer also has a third inductor magnetically coupled to the first inductor. The third inductor includes a third port. The counter-clockwise direction is opposite the clockwise direction to reduce magnetic coupling between the second inductor and the third inductor based on magnetic coupling cancellation.

The invention discloses an on-chip transformer and an electronic device, and relates to the technical field of semiconductors, and the disclosed on-chip transformer comprises a primary coil, a secondary coil and a metal wire; the primary coil is a coil for receiving a direct current signal, and the secondary coil is a coil which does not receive the direct current signal; the primary coil and the secondary coil are isolated from each other and are arranged in a staggered mode through metal wires. The coil width of the primary coil is greater than the coil width of the secondary coil. The coil width of the primary coil is set to be larger than the coil width of the secondary coil, so that the overall area is not obviously increased on the basis of ensuring a high quality factor and reducing signal transmission loss, and miniaturization design of a chip is facilitated.

To provide an electromagnetic wave shielding filter that is configured to shield electromagnetic waves using a lowpass filter or a bandpass filter, by transmitting a desired high-frequency signal while blocking undesired common-mode-form electromagnetic waves.SOLUTION: An electromagnetic wave shielding filter for high-frequency communication has an elliptical ferrite magnetic core inside the filter, and has a primary coil and a secondary coil installed at both ends. Then, in an elliptical magnetic field core, shielding and penetrating portions are finished with electromagnetic wave shielding material. A signal on the first coil side is transmitted to the secondary coil in a magnetic field form and a common mode component that is not very desired is removed.SELECTED DRAWING: Figure 1

The present application relates to a filter configuration method, which is not configured by a low-pass filter or a band-pass filter when configuring an electromagnetic wave shielding filter, but is configured by a magnetic field transmission method, which transmits only a desired signal while maintaining the shielding of an undesired electromagnetic wave. The present application relates to an electromagnetic wave shielding filter for high-frequency communication, which is configured with an elliptical ferrite core inside the filter, a primary coil and a secondary coil are arranged at both ends, and then, for the elliptical magnetic core, a tail is made of an electromagnetic wave shielding material, the signal on the primary coil side is transmitted to the secondary coil in the form of a magnetic field, and the remaining undesired common mode component is removed.

To provide a balun transformer with enhanced magnetic coupling between primary and secondary windings.SOLUTION: A balun transformer 1 includes terminal electrodes E1 to E4, coil patterns 10 and 30 connected in parallel between the terminal electrode E1 and the terminal electrode E2, and coil patterns 20 and 40 connected in parallel between the terminal electrode E3 and the terminal electrode E4. The coil patterns 10, 20, 30, and 40 are coaxially laminated in this order. In this way, the coil patterns 10 and 30 forming the primary winding and connected in parallel with each other and the coil patterns 20 and 40 forming the secondary winding and connected in parallel with each other are alternately laminated. Therefore, it is possible to enhance the magnetic coupling between the primary winding and the secondary winding.SELECTED DRAWING: Figure 5

A transformer device includes a first and a second trace, a first and a second connection member, and a first input / output member. A second sub-trace of the first trace is coupled to a first sub-trace of the first trace at a first and a second area. The first connection member is coupled to the first and the second sub-trace. The first and a third sub-trace of the second trace are disposed in turn. A fourth sub-trace of the second trace is coupled to the third sub-trace at the first and the second area. The second and the fourth sub-trace are disposed in turn. The second connection member is coupled to the third and the fourth sub-trace. The first sub-trace includes first wires, and the first input / output member is coupled to the first wire which is located at an inner side among the first wires.