7results about "One-port networks" patented technology

A transistor device package includes a component assembly comprising an interconnect structure, a transistor die having a front surface including gate, drain, and source terminal on a first surface of the interconnect structure, and one or more passive electrical components electrically coupled to the gate, drain, and / or source terminal by the interconnect structure. A thermally conductive flange is attached to a back surface of the transistor die, which is opposite the front surface, by a conductive adhesive. Respective patterns of the conductive adhesive are provided on the first surface of the interconnect structure, and least one of the respective patterns of the conductive adhesive provides an input, output, or ground signal path for the transistor device package. Related fabrication methods are also discussed.

An electronic filter includes a splitter (14) that is configured to split a signal of interest and an other spectral content onto a first circuit leg (16) and a second circuit leg (18), and a signal generator (32,20, 34) that is configured to generate an activator signal. A first combiner (22) on the first circuit leg is configured to inject the activator signal at a frequency matching the other spectral content, and a second combiner (24) on the second circuit leg is configured to inject the activator signal at a frequency matching the other spectral content. The activator signal in the second circuit leg is phase shifted approximately 180 degrees relative to the activator signal in the first circuit leg. A first frequency selective limiter (26) on the first circuit leg is configured to attenuate both the activator signal and the other spectral content on the first circuit leg by a first dB of attenuation to a threshold power level of the first frequency selective limiter, and a second frequency selective limiter (28) on the second circuit leg is configured to attenuate both the activator signal and the other spectral content on the second circuit leg by a second dB of attenuation to a threshold power level of the second frequency selective limiter. A third combiner (30) is configured to generate a filter output based on combining the attenuated activator signal, the attenuated other spectral content, and the signal of interest from the first frequency selective limiter with the attenuated activator signal, the attenuated other spectral content, and the signal of interest from the second frequency selective limiter. The first and second frequency selective limiters may comprise spin wave limiters which are magnetostatic devices.

Provided is a double-filtering-based spin element. The double-filtering-based spin element includes a first magnetic layer, a second magnetic layer, a spin-to-charge conversion layer formed between the first magnetic layer and the second magnetic layer and generating an electric field by performing spin-orbit coupling on first passing electrons and reflected electrons, a first spin injection layer configured to receive the first passing electrons that have passed through the first magnetic layer and inject the electrons into the spin-to-charge conversion layer, and a second spin injection layer configured to receive the reflected electrons reflected from the second magnetic layer among second passing electrons that have passed through the spin-to-charge conversion layer and inject the reflected electrons into the spin-to-charge conversion layer.

The utility model relates to EMC new energy automobile technical field, specifically is a kind of induced electromotive force circuit caused by inhibiting electromagnetic lock start-stop, it is connected between new energy automobile power Better and control pin EN, wherein induced electromotive force circuit includes: power filter module, voltage absorption module and control end protection module;And through specific electrical connection relationship, form three-grade protection structure, synergic inhibition induced electromotive force-power filter module stabilizes input fluctuation, voltage absorption module clamps coil surge voltage, control end protection module isolates MCU interference, to solve the problem that electromagnetic lock start-stop when induced electromotive force interferes with car machine equipment and burns fuse, experiment shows that this circuit can the induced electromotive force peak value is inhibited to 1.3 times within power voltage, EMC test passes ISO 7637-2 standard.

This enables the realization of a multilayer filter device that allows for easy adjustment of the coupling between multiple resonators. [Solution] The filter device 1 comprises resonators 11 and 12 and a laminate 50 including a plurality of dielectric layers 51 to 74. Resonator 11 includes an inductor L1 that is not electrically connected to ground. Resonator 12 includes an inductor L2 that is not electrically connected to ground. Inductor L1 includes a conductor layer 661 extending on a first plane perpendicular to the lamination direction T of the plurality of dielectric layers 51 to 74 and a pair of columnar conductors T1a and T1b. Inductor L2 includes a conductor layer 731 extending on a second plane perpendicular to the lamination direction T and a pair of columnar conductors T2a and T2b. At least a portion of the conductor layer 661 and at least a portion of the conductor layer 731 overlap each other when viewed from the lamination direction T.

Transceiver front end (200; 300; 400), comprising: an antenna (250; 350; 450); a transmitter branch (201; 301; 401) and a receiver branch (202; 302; 402), wherein the antenna (250; 350; 450), the transmitter branch (201; 301; 401) and the receiver branch (202; 302; 402) are connected to an input / output pad (251; 351; 451), wherein the transceiver front end (200; 300; 400) is operable in a transmitter mode and a receiver mode, and wherein the receiver branch (202; 302; 402) comprises: a low-noise amplifier (220; 320; 420); a switch (280; 380; 480), wherein the switch (280; 380; 480) alternately disconnects the low-noise amplifier (220; 320; 420) from the input / output pad (251; 351; 451) and connects the low-noise amplifier (220; 320; 420) to the input / output pad (251; 351; 451), wherein the transceiver front end (200; 300; 400) is operated in transmitter mode when the low-noise amplifier (220; 320; 420) is disconnected from the input / output pad (251; 351; 451) by the switch (280; 380; 480), wherein the transceiver front end (200; 300; 400) is operated in receiver mode when the low-noise amplifier (220; 320; 420) is connected to the input / output pad (251; 351; 451) via the switch (280; 380; 480), and wherein the low-noise amplifier (220; 320; 420) amplifies the input signals received from the antenna (250; 350; 450) when the transceiver front-end (200; 300; 400) is in receiver mode, and an matching network (230; 330; 430) that is operationally connected to the switch (280; 380; 480) and the low-noise amplifier (220; 320; 420), wherein the matching network (230; 330; 430) provides both impedance matching and protection against electrostatic discharge for the switch (280; 380; 480) and the low-noise amplifier (220; 320; 420), wherein the matching network (230; 330; 430) comprises an inductor (235; 335; 435) and a first capacitor (231; 331; 431) electrically connected in series between ground and an input terminal (285; 385; 485) of the switch (280; 380; 480), and further comprises a second capacitor (232; 432) electrically connected between an output terminal (286; 386; 486) of the switch (280; 380; 480) and the second bias resistor (272, 472). wherein the receiver branch (202; 302; 402) further comprises a bias resistor (271; 371; 471) which is electrically connected to an input terminal (285; 385; 485) of the switch (280; 380; 480), enabling different bias voltages to be applied to the input terminal (285; 385; 485) of the switch (280; 380; 480) accordingly in transmitter mode and receiver mode, and wherein the receiver branch (202; 302; 402) further comprises a second bias resistor (272; 472) which is electrically connected to an input terminal (225; 325; 425) of the low-noise amplifier (220; 320; 420).

This application provides an antenna matching circuit, filtering method, apparatus, electronic device, medium, and product. The antenna matching circuit includes: a processing unit, configured to determine the frequency range of the electromagnetic waves acquired by the antenna, and when the frequency range includes an interference frequency band, send a first control signal to the control terminal of a first switch; the first switch includes a control terminal, an input terminal, and at least one output terminal, the input terminal of the first switch being connected to the main circuit of the matching circuit, and the output terminal of the first switch being connected to the input terminal of the corresponding filtering module; the control terminal of the first switch is connected to the processing unit, configured to, upon receiving the first control signal, parse the first control signal to obtain the identification information of the target filtering module, and activate the target filtering module, which can effectively improve antenna isolation and overall performance, thereby improving antenna radiation efficiency and communication quality.