4results 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

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 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.

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.