29 results about "Rf circuit" patented technology

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.

This application relates to a radio frequency (RF) system, a coexistence communication method, a communication device, and a readable storage medium. The RF system includes: a first RF circuit for operating in a first frequency band and power-coupled to output a first coupled signal; a second RF circuit for operating in a second frequency band and power-coupled to output a second coupled signal; and a processing circuit connected to both the first and second RF circuits, configured to, in the event of adjacent-channel interference between the first RF signal in the first frequency band and the second RF signal in the second frequency band, reduce the transmission power of the interfering signal and increase the reception power of the interfered signal according to the type of interference, thereby effectively reducing mutual interference between the first RF signal and the second RF signal (e.g., Wi-Fi communication and cellular communication) when they coexist without sacrificing the effective operating bandwidth of the first and second RF signals.

In some embodiments, an apparatus for communication in a wireless network includes a radio frequency (RF) circuitry. The RF circuitry includes one or more transceivers and a signal booster. The signal booster is coupled to the one or more transceivers to provide boosted high frequency signal to the transceivers based on a local oscillator signal received via a transmission line. The signal booster includes an amplifier including a pair of transistors cross-coupled each other in cascode. This configuration results in a reduced impedance of the signal booster, thus provides an improved Q value for the high frequency signal provided to the transceivers, without incurring additional power consumption as in existing systems. The signal booster can be implemented in any access point or client device in a wireless communication network such as IEEE 802.11.

An operating frequency regulation method for a radio frequency (RF) circuit, an operating frequency control circuit, and an RF power supply device are provided. The operating frequency regulation method for the RF circuit includes the following. The RF circuit is controlled to output to a load at different operating frequencies. A circuit parameter of the RF circuit during output of the RF circuit at each of the different operating frequencies is detected. A resonant frequency of the RF circuit is calculated based on the detected circuit parameter of the RF circuit during the output of the RF circuit at each of the different operating frequencies. An operating frequency of the RF circuit is regulated to the resonant frequency.

This invention provides a power amplifier device and an RF circuit module that suppresses harmonics contained in the amplified signal from the amplifier from entering other devices. The power amplifier device includes: a first component having a first circuit; a second component having a second circuit; and an intercomponent connecting conductor electrically connecting the first circuit and the second circuit. The second component is mounted on the first component. The second circuit includes a first amplifier that amplifies a radio frequency signal and outputs a first amplified signal. The first circuit includes a control circuit that controls the operation of the second circuit. At least a portion of a first terminal circuit is formed in the first component. The first terminal circuit is connected to the first amplifier via the intercomponent connecting conductor, thereby attenuating the harmonic components of the first amplified signal.

Impedance matching device (111) comprising a housing (1) in which a separation is provided within the housing (1) to divide the housing (1) into the following parts: - RF compartment (2) comprising RF circuit components; - drive compartment (3) comprising drive components; - low voltage compartment (4) comprising low voltage components, such as control components.

The utility model provides a kind of mobile phone RF circuit device suitable for B40 / B41 frequency band, including RF circuit component, the RF circuit component includes high pass filter, low pass filter, radio frequency power amplifier, radio frequency transceiver and antenna;The signal output end of radio frequency transceiver is electrically connected with the input end of radio frequency power amplifier.The utility model replaces traditional double SAW filter by the combination of high pass filter+low pass filter+single radio frequency switch, reduces at least one SAW filter use, reduces component quantity, reduces PCB occupied area about 30%, adapts smartphone ultrathin compact design;Through radio frequency switch time-sharing switch transmission and receiving path, avoid signal link too long, HPF and LPF optimization filtering, reduce insertion loss and impedance matching complexity, improve signal stability;By omitting high-cost SAW filter, using LC lumped parameter filter etc., hardware cost reduces about 30%, and reduces component quantity and assembly procedure, reduces scale production procurement and process cost.

The power amplifier circuit suppresses a change in an operating point of an amplifying transistor and deterioration of linearity of a relationship between input and output. The power amplifier circuit includes: an amplifying transistor having a base to which a radio frequency signal is supplied, amplifying the radio frequency signal and outputting; a resistance element having a first terminal and a second terminal electrically connected to the base of the amplifying transistor; a first bias transistor having a collector to which a first voltage is applied, a base to which a first bias voltage is applied, and an emitter electrically connected to the first terminal of the resistance element and supplying a bias current to the base of the amplifying transistor through the resistance element; and a second bias transistor having an emitter electrically connected to the emitter of the first bias transistor and the first terminal of the resistance element, a base to which a second bias voltage is applied, and a collector to which a second voltage lower than the first voltage is applied.

This application relates to an earphone, specifically to the field of sound-generating devices. The earphone includes a first housing assembly, a second housing assembly, an ear loop, and a radio frequency (RF) circuit. The ear loop includes an elastic element and an antenna. One end of the elastic element is connected to the first housing assembly, and the other end is connected to the second housing assembly. The RF circuit is disposed within the first housing assembly and / or within it. The RF signal output by the RF circuit is radiated via the antenna. The antenna is attached to the elastic element and is insulated from it. This application utilizes the advantage that the ear loop is further away from the user's skin compared to the first and second housing assemblies. By placing the antenna on the ear loop, the internal space of the ear loop is utilized effectively. Compared to placing the antenna within the first and second housing assemblies, placing the antenna on the ear loop results in a lower SAR value, leading to better antenna performance.

In one example, an apparatus includes: an analog front end (RF) circuit to receive and process, from a first antenna and a second antenna, a radio frequency (RF) signal to obtain a digital signal, the RF circuit having a single RF signal processing path; a baseband circuit coupled to the RF circuit to process the digital signal, the baseband circuit to determine a first metric for a first packet of the RF signal received via the first antenna; and an antenna selection controller coupled to the baseband circuit, the antenna selection controller to cause the RF circuit to switch from receipt of the RF signal via the second antenna to receipt of the RF signal via the first antenna based at least in part on the first metric.

A UE includes: a body; an RF circuit that is at least one of configured to provide an RF transmit signal and configured to process an RF reception signal; an antenna system including: a first antenna element comprising a first elongated conductor disposed at least proximate to a portion of a perimeter of the body; a second antenna element comprising a second elongated conductor displaced inwardly, relative to the perimeter of the body, from the first antenna element and disposed proximate to the first elongated conductor for at least some of the portion of the perimeter of the body; and a first switch circuit, coupled to the first antenna element and the second antenna element and configured to selectively couple the first antenna element to the second antenna element; and a controller configured to cause the first switch circuit to selectively couple the first antenna element to the second antenna element.

This invention discloses an RF switch matrix for data link performance testing, relating to the field of microwave RF circuit technology. It includes a power attenuator, a digitally controlled attenuator, a combiner, a bidirectional coupler, a digitally controlled attenuator, a combiner, and a power attenuator connected in sequence; it also includes nine switches and three loads. Through different state combinations of the nine switches, this invention enables the RF switch matrix to be configured for various test modes, including basic parameter test mode, operating frequency test mode, transmit power test mode, receive sensitivity and anti-interference test mode, and network access time test mode. This invention has advantages such as high degree of automation, comprehensive performance coverage, fast testing speed, and high accuracy, and can be widely applied in the field of comprehensive performance testing of data link systems.

The application provides a high-precision laser ranging system and method based on differential signal demodulation, comprising a laser, a first optical circulator, a second optical circulator, a two-port Mach-Zehnder modulator, an optical lens, a mirror, an RF circuit board, a PC and a differential signal processing system; the laser signal is subjected to first intensity modulation by the two-port Mach-Zehnder modulator, and the first modulated laser signal is transmitted to the optical lens; after being irradiated by the mirror, the laser signal is folded back to the optical lens, and then enters the two-port Mach-Zehnder modulator again through the second port of the optical lens to be subjected to second modulation, thereby obtaining a differential signal; the differential signal enters the differential signal processing system to be analyzed, thereby obtaining a single-end signal; based on the single-end signal, an optical intensity extreme value is obtained, and a distance to be measured is calculated. The technical scheme of the application improves the ranging precision, and an absolute distance result with high precision is obtained.

This utility model discloses an inner shell and a beauty device. The inner shell includes a front shell and a rear shell. The front shell includes a button panel mounting position, a main control board mounting position, and a vibration motor mounting position. The rear shell includes an RF circuit board mounting position and a battery mounting position. The front and rear shells are connected by a fastening assembly. The vibration motor mounting position is located at the upper end of the front shell, and the button panel mounting position, main control board mounting position, RF circuit board mounting position, and battery mounting position are all located between the front and rear shells. This utility model, through structural improvements to the beauty device shell, reduces the number of internal supports and improves the internal space utilization of the beauty device.

Provided are a user equipment with improved power efficiency and a system including the same. The user equipment includes a radio frequency (RF) circuit configured to receive a message from a base station, a memory storing a spectral efficiency set, the spectral efficiency set including spectral efficiency candidates corresponding to a number of reception antennas, and a processor configured to obtain traffic information from the message, calculate a required spectral efficiency based on the traffic information by using an artificial intelligence model, compare the required spectral efficiency with the spectral efficiency set, and determine a first spectral efficiency candidate with a first number of reception antennas according to a result of comparing the required spectral efficiency with the spectral efficiency set.

According to various embodiments, an electronic device may comprise: an RF circuit configured for cellular data communication, a plurality of antennas connected to the RF circuit, a Wi-Fi module comprising Wi-Fi circuitry, and at least one processor. The at least one processor may be configured to provide a first indication indicating activation of cellular data communication based on a first antenna among the plurality of antennas being used for transmission. A distance between the first antenna and a Wi-Fi antenna corresponding to the Wi-Fi module may be equal to or less than a first value. The Wi-Fi module may be configured to perform a back-off operation on transmission power of a Wi-Fi RF signal based on reception of the first indication. The at least one processor may be further configured to refrain from providing the first indication, based on a second antenna from which distance to the Wi-Fi antenna exceeds the first value among the plurality of antennas being used for transmission.

This application relates to the field of semiconductor technology, specifically disclosing a semiconductor structure and fabrication method. The fabrication method uses five photomasks to form conductive connectors under RRAM cells, mark grooves, dielectric layers of MIM cell capacitors, top electrodes of RRAM cells and MIM cells, and top vias, thereby achieving integrated manufacturing of MIM and RRAM cells. While ensuring the functionality of existing devices, it effectively improves the functional density of the chip, making it suitable for high-density storage, analog / RF circuits, and in-memory computing chips. Compared to traditional discrete processes that use 8-10 photomasks, this application significantly reduces the number of photomasks through a shared photomask process, thereby reducing photomask costs and the cost of repetitive manufacturing processes.

An electronic device of the present disclosure comprises: a speaker; a display disposed on the front surface of the electronic device; a cover disposed on the rear surface of the electronic device; a printed circuit board including radio frequency (RF) circuits including at least one of a power amplifier or a power management integrated circuit (IC), spaced apart from the speaker; a battery spaced apart from the printed circuit board; a first shielding sheet corresponding to at least a partial area of the battery and the printed circuit board, disposed between the display and the printed circuit board, and configured to shield a magnetic field generated by the RF circuits, from facing the front surface; and a second shielding sheet corresponding to at least a partial area of the battery and the printed circuit board, disposed between the cover, the battery, and the printed circuit board, including an opening in an area adjacent to the RF circuits, and configured to radiate, through the opening, the magnetic field generated by the RF circuits.

This application discloses a radio frequency (RF) circuit, an RF module, and an electronic device. The RF circuit includes: an antenna group; a first signal processing module; the first signal processing module processes downlink signals from a first identification card and a second identification card received by the first antenna; a second signal processing module; the second signal processing module processes downlink signals from the first identification card received by the second, third, and fourth antennas in the antenna group; a transceiver module; the transceiver module modulates the uplink signal from the first identification card and transmits the modulated uplink signal to the second signal processing module; the transceiver module is also used to demodulate the downlink signals output by the first and second signal processing modules.

In one embodiment, an apparatus includes: a first radio frequency (RF) circuit to transmit and receive at a 2.4 GHz band according to a first wireless communication protocol; a second RF circuit to transmit and receive at a 2.4 GHz band according to a second wireless communication protocol; and a selection filter coupled to the first RF circuit and the second RF circuit. The selection filter may include: a first filter to couple to the first RF circuit, the first filter configured for a first wireless channel within the 2.4 GHz band; and a second filter to couple to the second RF circuit, the second filter configured for a second wireless channel within the 2.4 GHz band.

The utility model provides matching equipment which comprises a shell, a partition plate is arranged in the shell, and the partition plate is used for dividing the shell into a radio frequency space used for containing radio frequency circuit components; the driving space is used for accommodating a driving component of the radio frequency circuit component; and the low-pressure space is used for accommodating devices such as a circuit board for controlling the system. According to the scheme provided by the utility model, different components of the whole matcher are arranged in different and independent spaces, so that electromagnetic interference among the components is avoided, and the operation stability of matcher equipment is further improved. The invention also provides a power supply module using the matching equipment.

This application discloses a beauty instrument which includes: a housing, where the housing includes a working head; and an electrical stimulation component which includes an EMS stimulation circuit, an RF radio frequency circuit, and a ring electrode, a first group of electrodes, and a second group of electrodes that are all disposed on the working head, the ring electrode is separately connected to the EMS stimulation circuit and the RF radio frequency circuit, the first group of electrodes includes a plurality of first electrodes that are distributed at intervals around the ring electrode, the plurality of first electrodes are all connected to the RF radio frequency circuit and / or connected to the EMS stimulation circuit, the second group of electrodes includes a plurality of second electrodes that are all connected to the EMS stimulation circuit.

This invention relates to the field of radio frequency (RF) microwave communication, and particularly to an RF burn-out protection circuit and a high-power RF switch. The RF burn-out protection circuit of this invention includes a first 3dB coupler, a second 3dB coupler, a first parallel unit, a second parallel unit, a first matched load, a second matched load, a first RF circuit, and a second RF circuit. The RF burn-out protection circuit and high-power RF switch of this invention have high power capacity, low insertion loss, high isolation, stable VSWR performance, and are flexible in application and low in cost, possessing broad application prospects and value.

Provides suitable differentially partitioned openings. [Solution] The radio frequency (RF) aperture includes an interface printed circuit board. An array of conductive tapered projections is located on the front side of the interface printed circuit board and has a base that extends away from the front side of the interface printed circuit board. Chip ballasts are mounted on the back side of the interface printed circuit board. Each chip ballast has a balanced port electrically connected to adjacent (two) conductive tapered projections via an electrical feedthrough through the interface printed circuit board. Each chip ballast further has an unbalanced port, and an RF circuit located on the back side of the interface printed circuit board is electrically connected to the unbalanced port of the chip ballast. The conductive tapered projections include dielectric tapered projections and a conductive layer located on the inner or outer surface of the dielectric tapered projections.

A mobile device includes: an RF circuit (Radio Frequency circuit) at least one of configured to provide an RF transmit signal and configured to process an RF reception signal; and an antenna system communicatively coupled to the RF circuit and comprising: an antenna element comprising a first elongated conductor and a second elongated conductor; a z-slot region that is generally z-shaped and positioned between a first stepped end of the first elongated conductor and a second stepped end of the second elongated conductor, the z-slot region having a width sized for tuning the mobile device to at least one frequency band; and a tunable capacitor coupled to the first stepped end of the first elongated conductor and to the second stepped end of the second elongated conductor, the tunable capacitor being configured to provide a selectable capacitance to tune the mobile device to the at least one frequency band.