101results about "One-port networks" patented technology

A communications system may include radio frequency (RF) circuitry, an antenna assembly, and an RF cable coupling the RF circuitry and the antenna assembly. The antenna assembly may include an antenna and RF impedance selection circuitry coupled thereto. The RF circuitry may be configured to communicate RF signals with the antenna via the RF cable, and communicate RF impedance selection signals to the RF impedance selection circuitry via the RF cable and using an alternating pulse width modulation scheme.

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 device (1) is provided with an element body (2) and an inductor. The inductor is provided with: a first conductor (10), a second conductor (11), a third conductor (12), a fourth conductor (13), a fifth conductor (14), and a sixth conductor (15) that extend in the stacking direction of a plurality of element body layers (7); the inductor comprises a first conductor (10), a second conductor (11), a first inductor conductor (20), a second inductor conductor (21), a third inductor conductor (22), and a fourth inductor conductor (23). The first inductor conductor (20) connects an end portion of the first conductor (10) on one side in the extension direction and an end portion of the second conductor (11) on one side in the extension direction. The second inductor conductor (21) connects an end portion of the second conductor (11) on the other side in the direction of extension, an end portion of the third conductor (12) on the other side in the direction of extension, and an end portion of the fourth conductor (13) on the other side in the direction of extension.

The present invention relates to a high-frequency bandpass filter for an MR device, particularly for a transmitting and / or receiving configuration of an MR device, comprising a resonator configuration having a signal input, a signal output, and at least one resonator, wherein each resonator has a capacitor connected in parallel with an inductor, and the inductor comprises a conductive coil body having a substantially HF hermetically sealed cavity. As a result, a high-quality, high-electrical-load-tolerance, and simultaneously low-impedance HF bandpass filter is achieved that can be manufactured simply and at low cost.

A power control circuit comprising a power supply and a load, the load being synthesized by an impedance synthesizer comprising two-terminal impedance elements connected in series and grouped into impedance modules. The impedance elements in each impedance module have equal values, while the impedance elements between modules have a ratio uniquely defined by the number of impedance elements in the impedance module. A plurality of switches associated with the impedance elements short-circuit a selected number of impedance elements under control of a first analog signal, which can be pre-processed by an analytic function. The analog signal is converted to a digital signal by an analog-to-digital converter, then level shifted to control the switches associated with the impedance elements, so that the amount of power delivered to the load can be controlled by the first analog signal. Pulse width modulation is deployed to further control the power by a second analog signal, with the additional benefit of overload protection.

Provided is a band-pass filter sheet characterized in that: a first dielectric layer, a metal layer, and a second dielectric layer are laminated in this order starting from the radio wave entry surface side; a mesh structure in which the metal layer is formed in a thin film shape and / or a plurality of closed loop structures which are arranged in a matrix is / are provided; and the thickness D of the first dielectric layer and the second dielectric layer is provided by expression (1). Expression (1): D=λ / 4√ε±20% (where λ = the center wavelength of electromagnetic waves and ε = the permittivity of the dielectric layer)

The application discloses a kind of capacitance inductance parity layer layered stack resonator, resonator includes the capacitance, inductance, first port, second port processed on substrate, the multilayer capacitance and multilayer inductance of resonator are layered stack and parallel and between first port and second port, inductance is inside capacitance, defect structure is arranged on each layer of capacitance between the uppermost layer of capacitance and the lowermost layer of capacitance, the via of inductance is vertically connected with the inductance of adjacent layer through defect structure.The application is only occupied with the plane area of one element in capacitance and inductance, with the characteristics of high integration, small size, high temperature resistance and integrated processing, can be applied to the design of passive devices such as filter, coupler with capacitance, inductance series-parallel structure.

The embodiment of the invention discloses an ultrasonic piezoelectric ceramic piece contact state detection circuit. According to one specific implementation mode of the method, the ultrasonic piezoelectric ceramic piece contact state detection circuit is composed of a low-pass filter circuit, a reference voltage setting circuit, an input detection circuit and an LED indicating circuit. According to the embodiment, a stable, efficient and easy-to-use scheme is provided for detecting the contact state of the ultrasonic application equipment and the human body.

The invention discloses a high-voltage-free frequency hopping filter and a manufacturing method thereof, and belongs to the technical field of frequency hopping filters, the high-voltage-free frequency hopping filter comprises a PCB, a 108-225 MHz channel frequency hopping filter and a 225-512 MHz channel frequency hopping filter are arranged on the PCB, the 108-225 MHz channel frequency hopping filter and the 225-512 MHz channel frequency hopping filter are both connected with a GaN chip switch, and the GaN chip switch is connected with a GaN chip. The GaN chip switch is used for driving the frequency hopping filters, and the input ends and the output ends of the 108-225 MHz channel frequency hopping filter and the 225-512 MHz channel frequency hopping filter are connected to the input radio frequency switch and the output radio frequency switch respectively. The GaN chip is used as a switch to drive the frequency hopping filter, so that the power consumption can be reduced, the product size is miniaturized, and the power capacitance value is greatly improved.

The invention relates to an analog-to-digital universal filtering system, which comprises a signal acquisition module, a signal detection module, a signal routing module, an analog filtering module, a digital filtering module and a signal output module, and is characterized in that the signal acquisition module, the signal detection module and the signal routing module are sequentially connected; the signal routing module is connected with the input end of the analog filtering module and the input end of the digital filtering module, and the output end of the analog filtering module and the output end of the digital filtering module are both connected with the signal output module. The first mixed signal selection unit is used to route the signals, and the targeted filtering processing of the signals is finally realized, so that the efficiency and quality of signal processing are improved, and the accuracy of signal category judgment and processing is improved.

According to the present invention, an edgewise coil is maintained in a state of being wound around a core, without performing high-temperature processing.　This noise filter is provided with a core (10) having a form in which an upper flange portion (12) and a lower flange portion (13) are disposed at both axial ends of a shaft portion (11), and a first edgewise coil (22A) and a second edgewise coil (22B) that are disposed so as to coaxially surround the shaft portion (11), wherein at least a portion of each of the first edgewise coil (22A) and the second edgewise coil (22B) overlaps the upper flange portion (12) and the lower flange portion (13) when the shaft portion (11) is viewed in the axial direction.

The invention relates to the technical field of communication equipment, and discloses a frequency hopping filter with a hopping transmission zero point, a hopping control method and communication equipment. At least one resonant inductor of an LC resonant circuit of the frequency hopping filter is connected with a radio frequency switch feedback capacitor array in parallel; the frequency of a transmission zero point at a higher harmonic of the frequency hopping filter is controlled by controlling the opening and closing of a channel where each feedback capacitor in the radio frequency switch feedback capacitor array is located, so that the frequency of the transmission zero point changes along with the center frequency of the frequency hopping filter; and finally, far-end suppression, relative bandwidth stability and frequency hopping accuracy in a wide frequency range are improved.

The present disclosure relates to an inductor assembly, an impedance matching network, and a system including the inductor assembly. An inductor assembly (100) includes: a fixed element (102) having a central core (104) and a support structure (106) coupled to and projecting outwardly from the central core, each of the support structures having an outer edge (108) having a notched profile with a recess (110) extending toward the central core; and a spiral inductor (112) having a plurality of turns located in the recesses of the at least two support structures. The support structures are spaced equidistantly from each other around the central core by air gaps (308). The inductor assembly can be incorporated into an impedance matching network (1100), and one or more impedance matching networks can be incorporated into a defrost system (100). The impedance matching network can be a single-ended network (1100) or a double-ended network (1300).

The embodiment of the invention provides a high-frequency pulse interference detection and suppression method. The method comprises the following steps: extracting a rising edge of an input signal through a rising edge extraction unit; modulating each extracted rising edge into a pulse wave with a fixed pulse width and a fixed amplitude through a first modulation unit; filtering the pulse wave through a filtering unit, and converting the frequency information of the input signal into a voltage signal; comparing the voltage signal with a fixed level through an over-frequency judgment unit, and outputting a judgment result; the over-frequency judgment unit has a hysteretic characteristic; carrying out duration prolonging processing on the judgment result through a second modulation unit, and outputting an over-frequency signal; and controlling the conduction state of the suppression circuit gating switch according to the level of the over-frequency signal. According to the invention, the problems of manufacturing precision and consistency caused by the need of extremely small current and capacitance are avoided, the accurate detection of MHz-level high-frequency interference is realized, the top-speed transmission of signals without interference is ensured, and the unification of high reliability and low delay is realized.

The high-performance low-pass filter topological structure comprises a second microstrip line and a seventh microstrip line which are connected in sequence, the second microstrip line is connected with an input end, and the seventh microstrip line is connected with an output end; a first microstrip line and a third microstrip line are symmetrically connected between the second microstrip line and the input end, the first microstrip line is connected with a first open-circuit branch knot, and the third microstrip line is connected with a second open-circuit branch knot; a fourth microstrip line and a fifth microstrip line are symmetrically connected between the second microstrip line and the seventh microstrip line, the fourth microstrip line is symmetrically connected with a third open-circuit branch knot and a fourth open-circuit branch knot, and the fifth microstrip line is symmetrically connected with a fifth open-circuit branch knot and a sixth open-circuit branch knot; a sixth microstrip line and an eighth microstrip line are symmetrically connected between the seventh microstrip line and the output end, the sixth microstrip line is connected with a seventh open-circuit branch knot, and the eighth microstrip line is connected with an eighth open-circuit branch knot; according to the low-pass filter, the defects of poor selectivity, narrow stop band and complex design process of a low-pass filter design scheme are overcome.

The invention discloses a method and device for inhibiting VFTO based on an adjustable RLC filter circuit, and the method comprises the steps: firstly installing an adjustable RLC filter device at a conducting rod side of a GIS high-voltage switch, collecting VFTO transient overvoltage waveforms at two ends of the high-voltage switch through a high-frequency voltage transformer, and extracting main frequency components through a frequency domain analysis algorithm; the control unit switches the connection mode of an inductance element and a capacitance element in the filter network through a high-voltage switch according to the analysis result, adaptively adjusts the resonant frequency of the filter, and ensures the precise matching of the resonant frequency and the VFTO dominant frequency through iterative optimization; the method solves the problem that an existing suppression method is difficult to give consideration to broadband coverage and simple and convenient structure, has the advantages of being rapid in response, stable in suppression effect and high in adaptability, and can be applied to VFTO dynamic suppression of GIS disconnecting switches or bus key nodes.

The utility model discloses a bandwidth reconfigurable low-pass filter topological structure, which comprises a second microstrip line and a seventh microstrip line which are sequentially connected along a first direction, the second microstrip line is connected with an input end, and the seventh microstrip line is connected with an output end; a first microstrip line is connected between the input end and the second microstrip line, and the first microstrip line is connected with a first open circuit branch; an eighth microstrip line is connected between the seventh microstrip line and the output end, and the eighth microstrip line is connected with a sixth open-circuit branch knot; a third microstrip line and a fifth microstrip line are symmetrically connected between the second microstrip line and the seventh microstrip line; the third microstrip line is sequentially connected with a first variable capacitance diode and a fourth microstrip line, and the fourth microstrip line is symmetrically connected with a second open-circuit branch knot and a third open-circuit branch knot; the fifth microstrip line is sequentially connected with a second variable capacitance diode and a sixth microstrip line, and the sixth microstrip line is symmetrically connected with a fourth open-circuit branch knot and a fifth open-circuit branch knot; according to the utility model, the problem that the filter cannot satisfy high selectivity and wide stop band at the same time is solved.

Embodiments disclosed herein include an impedance matching network. In one embodiment, the impedance matching network includes an input and a first matrix adjustment element on a first branch from the input, the first matrix adjustment element having a variable capacitance. In one embodiment, the impedance matching network further includes a transformer on a second branch from the input, the transformer having at least a first tap, a second matrix adjustment element on the first tap, and the second matrix adjustment element having a variable capacitance. In one embodiment, the impedance matching network further includes a third matrix adjustment element on the second branch after the transformer, the third matrix adjustment element having a variable capacitance. In one embodiment, the impedance matching network further includes an output on the second branch after the third matrix adjustment element.

Disclosed is an electrical resistor (1), in particular an electrical braking resistor, comprising: - a first electrical connection (3); - a second electrical connection (4); - a plurality of partial resistors (2) connected in parallel, each partial resistor (2.1, 2.2, ..., 2.n) being designed for a maximum power that can be supplied individually to the partial resistor (2.1, 2.2, ..., 2.n); - a switching device (5) which is designed to connect individual partial resistors (2.1, 2.2, ...2.n) of the at least two partial resistors (2) to the first electrical connection (3) and the second electrical connection (4), wherein the resistor (1) is designed to distribute an electrical power, which is supplied to the resistor (1) via the terminals (3, 4), by means of the switching device (5) as partial power to individual partial resistors (2.1, 2.2, ...2.n) of the plurality of partial resistors (2), that the partial power supplied to at least one partial resistor (2.1, 2.2, ...2.n) of the plurality of partial resistors (2) corresponds at least to the maximum power that can be supplied to this partial resistor (2.1, 2.2, ...2.n) or that the partial power which is supplied to the at least one partial resistor (2.1, 2.2, ...2.n) of the plurality of partial resistors (2) is supplied by means of an electrical connection, which is permanently established by the switching device (5), between the first electrical connection (3), the at least one partial resistor (2.1, 2.2, ...2.n) and the second electrical connection (4).

The present disclosure provides a coil component which generates different mutual inductance according to a connection path and a filter circuit comprising same. The coil component (10) of the present disclosure comprises: an insulator (1) having a first main surface (11A) and a second main surface (11B), and four side surfaces (12A-12D); a first coil (L1) disposed inside the insulator (1); and a second coil (L2) which is magnetically coupled with the first coil (L1). The first coil (L1) includes a first conductor pattern (2a) - a third conductor pattern (2c). The second coil (L2) includes a fourth conductor pattern (3a) – a sixth conductor pattern (3c). The second conductor pattern (2b) is derived from the position of the second side surface (12B) in a fourth side surface (12D) side from the fifth conductor pattern (3b), and the third conductor pattern (2c) is derived from the position of the third side surface (12C) in a fourth side surface (12D) side from the sixth conductor pattern (3c).

The present invention provides a high-frequency filter for a silicon carbide controller and a design method thereof. The high-frequency filter includes a large and a small racetrack-shaped magnetic ring, X capacitors, Y capacitors, and an integrated filter structure for loading the above-mentioned filtering elements, so as to realize the miniaturization of the filter. The design method specifically includes calculating the frequency of the interference source and the upper limit of the conduction interference voltage transfer gain; determining the initial topology and the optimization sequence; initializing the element values of the filter circuit; performing iterative optimization of the element values by a genetic algorithm; modifying the contemporary optimal element individuals; judging whether the element composition can be optimized; changing the order or topology of the filtering elements; calculating whether each element meets the constraint conditions to obtain the best filter solution. The aim is to solve the problem that the traditional filter design is difficult to effectively cope with the high-frequency electromagnetic interference brought by the silicon carbide controller for new energy vehicles.

An electronic component includes an element body and an inductor. The inductor includes a first conductor, a second conductor, a third conductor, a fourth conductor, a fifth conductor, and a sixth conductor extending in a stacking direction of a plurality of element body layers, and a first inductor conductor, a second inductor conductor, a third inductor conductor, and a fourth inductor conductor. The first inductor conductor connects an end portion on one side of the first conductor in an extending direction and an end portion on one side of the second conductor in an extending direction. The second inductor conductor connects an end portion on the other side of the second conductor in the extending direction, an end portion on the other side of the third conductor in an extending direction, and an end portion on the other side of the fourth conductor in an extending direction.

To realize a desired characteristic while suppressing the occurrence of a problem attributable to downsizing and inductor arrangement.SOLUTION: An electronic component 1 comprises a laminate 50, a first inductor L11, and a second inductor L21. The first inductor L11 includes a first conductor layer 661, a first columnar conductor T1a, and a second columnar conductor T1b. The second inductor L21 includes a second conductor layer 662, a third columnar conductor T2a, and a fourth columnar conductor T2b. At least a section of the first conductor layer 661 extends in a direction crossing a direction at an angle other than an odd multiple of 90°, in which direction the first columnar conductor T1a and the second columnar conductor T1b lie side by side. At least a section of the second conductor layer 662 extends in a direction crossing a direction at an angle other than an odd multiple of 90°, in which direction the third columnar conductor T2a and the fourth columnar conductor T2b lie side by side.SELECTED DRAWING: Figure 7

This provides an electronic component that can strengthen the ground of a shield. [Solution] The electronic component 1 comprises a base body 2, a shield E covering the end faces 2a, 2b and sides 2e, 2f of the base body 2, a ground terminal located on the main surface 2d and connected to ground, an inductor conductor and a capacitor conductor located inside the base body 2, a shield connecting conductor 19 electrically connecting the shield E located on side 2e and the shield E located on side 2f, and a connecting conductor electrically connecting the shield connecting conductor 19 and the ground terminal.

To provide a filter apparatus capable of achieving a required attenuation characteristic even when its size is reduced.SOLUTION: A filter apparatus 100 according to the present disclosure comprises: an insulator 3; a first coil element L1; an external electrode 4e; a second coil element L2; an external electrode 4a; an electrode pattern 7a; an electrode pattern 7b; and an external electrode 4d. The insulator 3 has a pair of main surfaces facing each other and a side surface connecting the main surfaces. The first coil element L1 forms a spiral-shaped coil within the insulator 3. The second coil element L2 overlaps at least a part of the first coil element L1 when viewed in a plan view from a side of one of the main surfaces, and forms a helical-shaped coil within the insulator 3.SELECTED DRAWING: Figure 1

This electronic component comprises: a first body that includes a capacitor element; a second body that is mounted on the first body and that includes an elastic wave element; and a band-pass filter circuit that includes a capacitor element and an elastic wave element. The capacitor elements contain a first dielectric that is composed of a first dielectric material for which the temperature coefficient of resonant frequency is a first value. The elastic wave elements contain a second dielectric that is composed of a second dielectric material for which the temperature coefficient of resonant frequency is a second value. The first dielectric and the second dielectric are selected such that the absolute value of the sum of the first value and the second value or the absolute value of the average of the first value and the second value is less than the absolute value of the second value.

The present invention pertains to a device and a process for filtering input radiofrequency signals (10), wherein a spin wave guiding means (3) is magnetized using a static magnetic field of a magnetization means (4), wherein a spin wave (30) is excited in the spin wave guiding means (3) by excitation means (1) using an input radiofrequency signal (10), wherein the spin waves (30) are guided by the spin wave guiding means (3) from the excitations means (1) to detection means (2), wherein the spin wave (30) is detected in the spin wave guiding means (3) by the detection means (2) and transformed into an output radiofrequency signal (20), wherein the input radiofrequency signal (10) is filtered by the excitation means (1) and / or by detection means (2) and / or by the spin wave guiding means (3) and / or by the magnetization means (4).

The invention provides a frequency mixing circuit and communication equipment, relates to the technical field of communication, and can reduce the power consumption of the frequency mixing circuit while realizing frequency mixing. The mixer circuit comprises a first switch tube, a second switch tube and a first filter. The source electrode of the first switch tube is used for being connected with a grounding end; the grid electrode of the second switch tube is connected with the grid electrode of the first switch tube, the grid electrode of the first switch tube and the grid electrode of the second switch tube are used for receiving a local oscillator signal, the source electrode of the second switch tube is connected with the drain electrode of the first switch tube, and the drain electrode of the second switch tube is used for receiving a first signal and outputting a second signal; the second signal is a signal generated after frequency mixing of the local oscillator signal and the first signal; the first end of the first filter is connected with the source electrode of the second switch tube, the second end of the first filter is used for being connected with a grounding end, and the first filter is used for filtering local oscillation signals of the source electrode of the second switch tube.

To provide an electronic component having an improved Q value.SOLUTION: An electronic component 1 includes: an element body 2; and an inductor. The inductor includes: a first conductor 10, a second conductor 11, a third conductor 12, a fourth conductor 13, a fifth conductor 14, and a sixth conductor 15 extending in a laminate direction of a plurality of element body layers 7, and a first inductor conductor 20, a second inductor conductor 21, a third inductor conductor 22, and a fourth inductor conductor 23. The first inductor conductor 20 connects an end part on one side in an extending direction of the first conductor 10 and an end part on one side in the extending direction of the second conductor 11. The second inductor conductor 21 connects an end part on the other side in the extending direction of the second conductor 1, an end part on the other side in the extending direction of the third conductor 12 and an end part on the other side in the extending direction of the fourth conductor 13.SELECTED DRAWING: Figure 1

Control console for a powered surgical tool that includes a transformer with a secondary winding across which the tool drive signal is present. Also internal to the transformer is a matched current source that consists of a leakage control winding and a capacitor. The current sourced by the matched current at least partially cancels out leakage current that may be present.