231 results about "Rf circuit" patented technology

Disclosed are methods, systems, and computer-readable medium to perform operations including: obtaining a first configured grant (CG) configuration for an uplink (UL) carrier and a second CG configuration for a supplementary uplink (SUL) carrier, each of the first and second CG configurations comprising multiple transmission occasions, generating at least one unused transmission occasion uplink control information (UTO-UCI), the at least one UTO-UCI indicating which of the multiple transmission occasions are unused by a user equipment (UE) for each of the first CG configuration and the second CG configuration, and instructing radio frequency (RF) circuitry to transmit the at least one UTO-UCI to an access node.

A radio-frequency (RF) circuit including: a multi-tone generation circuit configured to generate a multi-tone signal including a plurality of tones; a predistortion circuit configured to predistort the multi-tone signal or a modulation signal and output a predistortion signal; a power amplifier configured to amplify the predistortion signal and output an output signal; and a predistortion modeling circuit configured to model a predistortion model corresponding to the predistortion circuit based on the predistortion signal corresponding to the multi-tone signal and the output signal.

A circuit simulation method partitions circuits into linear and nonlinear subcircuits, obtains frequency responses of the linear portion, and applies causality-enforcing corrections to eliminate non-physical artifacts from band-limited data. The corrected responses enable construction of equivalent circuit models using voltage / current sources with passive elements, where source values update via convolution with port histories. This approach improves simulation accuracy and stability compared to direct frequency-inverse methods while maintaining compatibility with standard platforms including SPICE, PSCAD, and Simulink. Applications include power system transients, RF circuits, and high-speed digital interfaces.

A packaged integrated circuit device includes a die that includes integrated radio frequency (RF) circuitry. The packaged integrated circuit device also includes a package substrate including metal layers electrically connected to the RF circuitry. The packaged integrated circuit device further includes an impedance adapter electrically connected to the RF circuitry and disposed between the die and the package substrate. The impedance adapter includes a passive component disposed on or in a body of the impedance adapter.

A communication system for inventory management via wireless monitoring comprises radio frequency identification (RFID) tags configured to operate in a frequency band that is unlicensed in a first geographic region and is licensed in a second geographic region. The communication system also comprises a RFID reader designed according to operational parameters of the first geographic region. The RFID reader is configured to read, in the second geographic region, data from the RFID tags via radio frequency (RF) signal transmissions in the frequency band at a power level that exceeds the operational parameters of the first geographic region. The RFID reader comprises a RF circuit, an antenna, and a controller. The controller is configured to program the RF circuit with second operational parameters, which cause the RFID reader to operate outside of requirements for operation in the unlicensed frequency spectrum in the first geographic region as defined by the operational parameters.

The present disclosure relates to a cubic boron arsenide (c-BAs)-based multilayer device for generating acoustic waves. The device comprises a c-BAs-based substrate (102), a piezoelectric layer (104) arranged on the c-BAs-based substrate (102), and an interdigital transducer (IDT) (108, 110) arranged on the piezoelectric layer (104), and the c-BAs-based substrate (102) and the c-BAs-based substrate (102) are arranged on the c-BAs-based substrate (102), the c-BAs-based substrate (102), the c-BAs-based substrate (102) and the c-BAs-based substrate (104). The IDT is used to excite the acoustic wave in response to an applied RF signal. The device further comprises a temperature compensation (TC) layer (106), and the temperature compensation (TC) layer (106) is arranged between the c-BAs-based substrate and the piezoelectric layer or covers the piezoelectric layer and the IDT. By using the c-BAs-based substrate, the number of stray sound waves propagating at different material interfaces in the device can be reduced to the greatest extent. Thus, in an RF circuit in which the device is to be used, suppression of stray acoustic wave modes is provided without using any external components (e.g., a combination of capacitors, inductors, transformers, etc.) or additional resonators.

An electronic device may include: an RF circuit; memory storing instructions; and at least one processor connected to the memory. The at least one processor may be configured to execute the instructions to cause the electronic device to: perform scanning, by using the RF circuit, in a state that the electronic device has not accessed a network; based on a result of the scanning, identify a first cell located around the electronic device; based on identifying that the first cell is associated with satellite communication, monitor whether a trigger requiring a connection to the satellite communication occurs; and based on identifying an occurrence of the trigger, perform at least one first access operation for access to the network based on the first cell.

The invention belongs to the technical field of integrated circuits, and relates to an automatic design optimization method suitable for a large-scale analog / radio frequency circuit, which comprises the following steps of: hierarchically dividing the large-scale analog / radio frequency circuit into a plurality of circuit modules; carrying out random sampling to obtain an initial data set, and establishing a Pareto frontier model of a lower-layer circuit module; the optimization of the performance index of the system circuit is converted into the optimization of the performance index of the lower circuit module; obtaining a'pseudo 'Pareto optimal point near the optimal performance index of each current lower-layer circuit module by using an improved evolutionary algorithm; updating the Pareto front of the lower layer module by using the extracted Pareto optimal point, and performing constraint mapping calculation until the Pareto front of the current lower layer module is partially overlapped with the actual Pareto front; and solving a design variable of the lower-layer circuit module by using the output optimal performance index of the lower-layer module. According to the method, good circuit performance indexes can be obtained with fewer SPICE simulation times, and the cost of automatic design of a large-scale analog / radio frequency circuit is reduced.

Device structures and fabrication methods for MOSFETs having a novel multiple-conductive layer “T”-shaped gate (as viewed in cross-section). The novel “T-gate” significantly decreases the gate resistance RG of a MOSFET device and thus increases the figure-of-merit fMAX (the maximum device oscillation frequency, or the frequency at which the maximum power gain equals unity) and reduces the noise factor (NF) of the device. Fabrication of the novel MOSFET devices may be readily integrated into existing IC fabrication processes, and such MOSFETs may have gate lengths Lg scaled below the lithographic capabilities of the fabrication process. Some embodiments include conformal gate side-spacers. Some embodiments include non-conformal air-gapped gate side-spacers that result in reduced parasitic gate-to-source capacitance CGS and gate-to-drain capacitance CGD, with concomitant improved performance at high radio frequencies (RF). Embodiments of the novel MOSFET device enable RF circuits, such as low-noise amplifiers (LNAs), to exhibit a better noise figure parameter, NFmin.

The utility model relates to a 1.6 T silicon light engine, a modulation light source is arranged in a silicon light chip, the surface of the silicon light chip, which is provided with a copper convex column, is inversely pasted on a PCB (Printed Circuit Board), the PCB is provided with a clearance groove in an area below a light emitting waveguide of the silicon light chip, a ceramic heat sink is fixed on the silicon light chip, one end of the ceramic heat sink extends to the upper part of the clearance groove, and the other end of the ceramic heat sink extends to the lower part of the clearance groove. An array silicon lens and an optical fiber array which are fixed to the ceramic heat sink are sequentially arranged in the receding groove in the light propagation direction, the array silicon lens is coupled with a light outlet waveguide of the silicon optical chip, and an optical isolator fixed to the ceramic heat sink or the optical fiber array is coupled between the array silicon lens and the optical fiber array. The 1.6 T silicon light engine has the advantages that the silicon light chip with a built-in modulation light source is selected, coupling of an external light source is not needed, the 1.6 T silicon light engine assembled through the structure can reduce one-time high-frequency bonding pad switching, shorten the length of an RF circuit and greatly improve the high-frequency electrical performance, in addition, optical elements are all arranged on the ceramic heat sink, the light path is stable and reliable, and the cost is low.

A device for providing a magnetic treatment by evoking muscle contraction by a time-varying magnetic field and providing a RF treatment by heating biological structure. The device may provide a pressure treatment. The device includes an applicator having an RF electrode and a magnetic field generating device. The device may also include a main unit, a human machine interface, and a control unit. The control unit adjusts a signal provided to the RF electrode and creates an RF circuit, and also adjusts the signal provided to the magnetic field generating device and creates a magnetic circuit electrically insulated from the RF circuit. The RF circuit may include a power source and a power amplifier, and the magnetic circuit may include an energy storage to supply the magnetic field generating device with electric current.

According to one embodiment, an electronic device may be provided, the electronic device comprising an RF circuit and a communication processor operatively connected to the RF circuit, wherein the RF circuit comprises at least one reception circuit, at least one transmission circuit, a first VCO, a second VCO, and a signal detection block electrically connected to the first VCO, and the communication processor is configured to control the RF circuit to change the operating frequency of the second VCO on the basis of determining whether a signal output from the first VCO is an abnormal signal. Various other embodiments may be possible.

An electronic device is provided. The electronic device includes a radio frequency (RF) circuit, memory, comprising one or more storage media, storing instructions, and at least one processor communicatively coupled to the RF circuit and the memory, wherein the instructions, when executed by the at least one processor individually or collectively, cause the electronic device to establish a first Internet packet data network (PDN) connection associated with a first subscriber identity module (SIM), and, based on the first Internet PDN connection, perform a registration procedure with a second Internet protocol (IP) multimedia subsystem (IMS) connected to a second communication network, and wherein the first SIM is used for attaching to a first communication network and a second SIM is used for attaching to the second communication network.

The present disclosure provides a phased array antenna module loaded with metamaterials, an RF circuit, and a 5G mobile device. The module includes a millimeter-wave RF module with at least one emission surface and an arc-shaped metamaterial structure featuring multiple stacked layers, each with periodically distributed metallic unit structures. Each concave surface of the metamaterial structure aligns with the corresponding emission surface, and the metallic unit structures in the same layer are of equal size. Across layers, these structures are arranged in a one-to-one correspondence, with sizes sequentially increasing or decreasing along the stacking direction. This configuration improves gain, expands scanning angles, and minimizes scanning loss, offering enhanced performance and seamless integration with modern 5G devices.

An adjustable power divider circuit capable of implementing an arbitrary polarization mode is disposed between a radio-frequency (RF) circuit and at least one antenna element, and includes an input signal portion, at least two signal control portions, a processing unit, and at least one orthogonal coupler. The input signal portion can convert the RF circuit's RF signal(s) into input signals and send the input signals to the signal control portions. The signal control portions can convert the input signals into control signals based on the processing unit's instructions and send the control signals to the orthogonal coupler. The orthogonal coupler can generate two output signals having a 90-degree phase difference therebetween, and send the output signals to the antenna element. Accordingly, based on actual product needs, the adjustable power divider circuit can make the antenna element enter a polarization mode that is linear in an arbitrary direction, circular, elliptical, etc.

Various embodiments for die stacking are disclosed in the present disclosure for improved performance in RF circuit integration and packaging. In various layouts, a first die may be flipped and stacked on a second die via one or more bumping pillars coupled between the dies. The bumping pads may be disposed on the first die, the second die, or both. The bumping pads may comprise ground bumping pads for ground connection, RF signal bumping pads for cross-die RF signal transmission, and / or control bumping pads for biasing or logic control. Furthermore, the ground bumping pads and the RF signal bumping pad may form a ground-signal-ground pad structure for smooth RF signal transmission. The present embodiments may integrate a silicon-based die with an III-V semiconductor-based die together for a small form factor package with the well-defined ground to handle RF signals over millimeter-wave frequencies at high power levels.

Certain aspects of the present disclosure provide techniques for multi-stage impedance tuning for a radio frequency (RF) transmitter. An example apparatus includes RF circuitry comprising an amplifier, an impedance tuning circuit coupled to an output of the amplifier, and an antenna tuner coupled between an antenna feed and an output of the impedance tuning circuit. The apparatus further includes one or more memories and one or more processors coupled to the one or more memories. The one or more processors are configured to cause the apparatus to configure at least one parameter of the impedance tuning circuit or the amplifier based at least in part on at least one load characteristic at the antenna feed; and communicate one or more signals via the RF circuitry while the at least one parameter is configured based at least in part on the at least one load characteristic at the antenna feed.

A radio frequency (RF) filtering circuit. The RF circuit includes a first acoustic resonator disposed over a substrate; a second acoustic resonator disposed over the first acoustic resonator; and a via structure disposed between the first acoustic resonator and the second acoustic resonator, in contact with the first acoustic resonator and the second acoustic resonator. The first acoustic resonator and the second acoustic resonator are conductively connected to each other through the via structure.

Single band and multiband wireless antennas are an important element of wireless systems. Competing tradeoffs of overall footprint, performance aspects such as impedance matching and cost require not only consideration but become significant when multiple antenna elements are employed within a single antenna such as to obtain circular polarization transmit and / or receive. Accordingly, it would be beneficial to provide designers of a wide range of electrical devices and systems with compact single or multiple frequency band antennas which, in addition to providing the controlled radiation pattern and circular polarization purity (where required) are impedance matched without substantially increasing the footprint of the antenna and / or the complexity of the microwave / RF circuit interfaced to them, whilst supporting multiple signals to / from multiple antenna elements in antennas employing them. Solutions present achieve this through provisioning one or more capacitive series reactances discretely or in combination with one or more shunt capacitive reactances.

The invention discloses a data optimization method and system and a computing device cluster. After the data optimization system receives the physical attribute parameters of the passive device, feature extraction is carried out on the physical attribute parameters of the passive device, and poles, residuals and constant terms forming a scattering parameter frequency response curve of the passive device are obtained. The data optimization system calculates a scattering parameter frequency response curve of the passive device according to different frequencies, poles, residuals and constant terms in a set frequency range, performs passivity correction on the scattering parameter frequency response curve of the passive device, filters abnormal values in the scattering parameter frequency response curve of the passive device, or corrects the abnormal values, and finally performs passive correction on the scattering parameter frequency response curve of the passive device. And the curve is smoother. The scattering parameter of the scattering parameter frequency response curve of the passive device output by the data optimization system meets the physical property constraint. A designer selects the most suitable passive device for the radio frequency circuit based on the performance parameters of the passive device meeting the physical property constraint, so that the performance of the designed and developed radio frequency circuit is optimal.

The invention relates to the field of network communication, in particular to a sensing information acquisition method and device, computer equipment and a storage medium, which can freely set and control the transmitting power and the peak-to-average power ratio under the condition of ensuring the performance of radar and communication, obtain a communication sensing integrated signal and improve the communication sensing efficiency. According to the invention, efficient sharing of frequency spectrum sub-band resources and transmitting power is realized, the utilization rate of the frequency spectrum resources is maximized, the negative influence of radio frequency circuit transmitting signal distortion caused by the fact that echo signal noise power may be greater than echo power is reduced as much as possible, and the requirement of information perception in a longer distance is met.

A semiconductor device includes a semiconductor die comprising a radio frequency (RF) circuit, a first dielectric layer disposed over a first surface of the semiconductor die, an antenna layer disposed over a surface of the first dielectric layer, and an antenna feeding structure coupling the antenna layer to the RF circuit of the semiconductor die, wherein the semiconductor die comprises a via, and the antenna feeding structure comprises a first portion arranged within the opening of the semiconductor die and extending to the first surface of the semiconductor die, and a second portion arranged through the first dielectric layer.

An RF circuit is disclosed that may include a driver stage. The driver stage may include a gate bias circuit configured to receive a variable voltage supply signal; and an amplifier stage comprising a FET, wherein the gate bias circuit is configured to adaptively convert the variable voltage supply signal into a bias signal. The RF circuit may further include a circuit component configured to combine the bias signal and a radio frequency input signal to generate a combined signal, and wherein the amplifier stage is configured to receive the combined signal at a gate of the FET and to produce an intermediate output, and wherein the gate bias circuit is configured to generate the bias signal such that the bias signal increases as the variable voltage supply signal decreases to compensate for a tendency of a current through the FET to decrease as the variable voltage supply signal decreases.

Certain aspects of the present disclosure provide techniques and apparatus for calibrating radio frequency (RF) circuits using machine learning. One example method generally includes calibrating a first subset of RF circuit calibration parameters. Values are predicted for a second subset of RF circuit calibration parameters based on a machine learning model and the first subset of RF circuit calibration parameters. The second subset of RF circuit calibration parameters may be distinct from the first subset of RF circuit calibration parameters. At least the first subset of RF circuit calibration parameters is verified, and after the verifying, at least the first subset of RF circuit calibration parameters are written to a memory associated with the RF circuit.

Disclosed is an electronic device comprising a neural processing unit (NPU), an RF circuit connected to at least one antenna, a modem for cellular communication, and a shared memory. The NPU may obtain, from the shared memory, time-sensitive input information and non-time-sensitive input information obtained from the modem and a sensor fusion module and stored in the shared memory, input the time-sensitive input information and the non-time-sensitive input information to a multi-modal deep learning algorithm and thereby generate output information for use in operating the RF circuit and the modem, and store the output information in the shared memory in order to make the RF circuit and the modem operate according to the output information.

An RF circuit including a switch for isolation and a wireless communication device including the same are provided. The RF circuit includes: a first port and a second port that receive a first RF signal and a second RF signal; (1-1)-th and (1-2)-th amplification stages connected to the first port and a first ground to amplify the first RF signal; a (2-1) th amplification stage and a (2-2) th amplification stage connected to the second port and a second ground to amplify the second RF signal; a (1-1) th switch and a (1-2) th switch, the (1-1) th switch being connected to the (1-1) th amplification stage and a second ground, and the (1-2) th switch being connected to the (1-2) th amplification stage and the second ground; a (2-1) th switch and a (2-2) th switch, the (2-1) th switch being connected to the (2-1) th amplifier stage and the first ground, and the (2-2) th switch being connected to the (2-2) th amplifier stage and the first ground; and a mixer stage that mixes the first RF signal or the second RF signal with the LO signal.

A antenna structure is arranged on a circuit board, a first surface of the circuit board includes an RF circuit, and the antenna structure includes: a metal screw, fixed on the first surface through a metal hole; the metal hole forms a metal ring; a plastic column, set above the metal screw; a metal tube, embedded with the plastic column, wherein there is a first predetermined distance between the metal tube and the metal screw; a metal shrapnel, extending from a bottom of the metal tube, wherein the metal screw is electrically connected to the RF circuit or the metal tube is electrically connected to the RF circuit to enable the metal screw and the metal tube to transmit or receive signals. The present disclosure also provides an electronic device, and the metal screw also uses to fix the circuit board to the housing of the electronic device.

A radar device includes a frequency modulated continuous wave (FMCW) generator, a radio frequency (RF) circuit, a computing circuit, and a coherent subtractor. The FMCW generator is configured to generate an FMCW signal. The RF circuit is configured to modulate the FMCW signal into an RF signal and demodulate a reflection signal reflected at a target from the RF signal, so as to obtain a received signal. The computing circuit is configured to reconstruct a short-range leakage signal according to the FMCW signal and an estimated channel coefficient, a delay coefficient, a phase coefficient, and an amplitude coefficient obtained in a short-range leakage estimation stage of the radar device. The coherent subtractor is configured to compensate the received signal by the reconstructed short-range leakage signal.

This invention provides an automatic method and system for generating analog circuits. The circuit partitioning step divides the radio frequency (RF) circuit into multiple circuit units. The circuit segmentation step converts each circuit unit into multiple circuit segments. Each circuit segment includes at least one main component data and at least one peripheral component data. The main component model establishment step establishes a main component model, which corresponds to the main component data of each circuit segment. The circuit segment model establishment step establishes a circuit segment model, which corresponds to each circuit segment. The model combination step combines the main component model corresponding to each circuit segment with the circuit segment model to generate the analog circuit. This automatically converts the RF circuit into an analog circuit suitable for analog software.

According to an embodiment, an electronic device may comprise an RF circuit and at least one processor. The at least one processor may be configured to allocate a first RF path of the RF circuit to a first network communication corresponding to a first SIM during a first period and a second network communication corresponding to a second SIM during a second period, wherein the first SIM is activated during the first period and the second SIM is activated during the second period. The at least one processor may be configured to identify an occurrence of a timer start event associated with a disconnection of the second network communication. The at least one processor may be configured to start a timer having information about an area to which the electronic device is connected within the second network communication and / or an expiration time corresponding to the timer start event, based on identifying the occurrence of the timer start event. The at least one processor may be configured to perform a TAU procedure based on elapse of the expiration time of the timer. Other various embodiments are possible as well.