152 results about "RF power amplifier" patented technology

The invention provides a radio frequency power amplification circuit and an adjusting method thereof. The radio frequency power amplification circuit comprises an image transmission module, a first radio frequency switch, a radio frequency power amplification module, a radio frequency low-noise amplifier, a second radio frequency switch and an antenna module, the radio frequency power amplification module comprises a GaN radio frequency power amplifier, the image transmission module is connected with an RFC of the first radio frequency switch, the GaN radio frequency power amplifier is connected between RF1 channels of the first radio frequency switch and the second radio frequency switch, and the radio frequency low noise amplifier is connected between RF2 channels of the first radio frequency switch and the second radio frequency switch. The antenna module is connected with the RFC of the second radio frequency switch; the two radio frequency switches are configured to control a radio frequency signal transmitted by the image transmission module to flow to the GaN radio frequency power amplifier in a radio frequency transmitting state, and the radio frequency signal is transmitted to the antenna module after being amplified; in the radio frequency receiving state, radio frequency signals received by the antenna module are controlled to flow to the radio frequency low-noise amplifier and are sent to the image transmission module after being amplified. According to the invention, ultra-long distance image transmission of the unmanned equipment can be realized.

The invention provides a multimode radio frequency power amplifier module, a radio frequency chip and a mobile terminal. The module comprises two power amplifiers, four switching circuits and a control circuit, an input GSM low-frequency-band radio-frequency signal and a low-frequency-band radio-frequency signal of other communication systems are input into the low-frequency-band power amplifier through the first input switch circuit, and the output of the low-frequency-band power amplifier is connected with one of the low-frequency-band radio-frequency output ports through the first output switch circuit. An input GSM high-frequency-band radio frequency signal and a medium-frequency-band radio frequency signal of other communication systems are input into the medium-frequency-band power amplifier through a second input switch circuit, and the output of the medium-frequency-band power amplifier is connected with one of the medium-frequency-band radio frequency output ports through a second output switch circuit; and the control circuit provides proper working voltage for the low-frequency-band power amplifier and the middle-frequency-band power amplifier respectively. The integration level of the radio frequency amplifier module is improved, the area is reduced, and the cost of the mobile terminal is reduced.

A radio frequency (RF) power amplifier based on transformer matching is provided. The RF power amplifier includes: a first-stage amplification circuit configured with an input terminal and an output terminal, wherein the output terminal of the first-stage amplification circuit is configured to be connected to one terminal of a main coil of a first transformer; the first transformer configured to include the main coil and a secondary coil, wherein one terminal of the secondary coil is grounded and the other terminal of the secondary coil is connected to a medium-low power mode input terminal of a power switch; the second-stage amplification circuit configured with an input terminal for receiving the amplified RF signal from the first-stage amplification circuit, wherein an output terminal of the second-stage amplification circuit is configured to be connected to a high power mode input terminal of the power switch.

A radio frequency (RF) dielectric heating system includes a solid-state RF power generator, a matching network electrically coupled to the RF power generator, and a dielectric heating applicator electrically coupled to the matching network and including electrodes for applying RF power to a dielectric material. A solid-state RF power generator can include a power supply, an RF power amplifier stage electrically coupled to the power supply, and a control system electrically coupled to and configured to control the RF power amplifier stage. The control system can be configured to regulate an output voltage of the RF power generator to provide a constant RF power generator output current to maintain a constant voltage across the applicator electrodes. Examples of RF power generators and methods for RF dielectric heating are also disclosed.

The invention provides a radio frequency transmitting and receiving fusion circuit, a transmitting and receiving front-end chip and a radio frequency heterogeneous microsystem, and the radio frequency transmitting and receiving fusion circuit comprises a first bidirectional driving amplifier which is configured to be a radio frequency power amplifier and a low noise amplifier in a radio frequency transmitting process and a radio frequency receiving process; the phase shifter is connected with the first bidirectional driving amplifier and is configured to adjust the phase of a radio frequency signal; the radio frequency signal comprises a transmitting signal and a receiving signal; and the second bidirectional driving amplifier is connected with the phase shifter and is configured to carry out frequency mixing on the radio frequency signal. The invention provides a compact and efficient transmit-receive fusion design technology, and modules and devices with similar functions in the transmitting channel and the receiving channel are deeply fused and designed, so that the size of the transmit-receive channel is reduced, the chip simulation integration level is improved, and the performance of the transmit-receive channel is improved.

An electronic device with wireless circuitry is provided. The wireless circuitry can include a radio-frequency data converter block configured to receive baseband signals and to output corresponding radio-frequency signals to a radio-frequency power amplifier. The radio-frequency data converter block may include one or more radio-frequency digital-to-analog converter (DAC) cells configured to receive an oscillator signal. The radio-frequency data converter block can exhibit a gain that is controlled using gain control circuitry. The gain control circuitry can control the gain of the radio-frequency data converter block by selectively enabling switchable components within each DAC cell to realize an incremental gain step of a first resolution and by adjusting the duty cycle of the oscillator signal to realize an incremental gain step of a second resolution finer than the first resolution.

An improved architecture for a radio frequency (RF) power amplifier, impedance matching network, and selector switch. One aspect of embodiments of the invention is splitting the functionality of a final stage impedance matching network (IMN) into two parts, comprising a base set of off-chip IMN components and an on-chip IMN tuning component. The on-chip IMN tuning component may be a digitally tunable capacitor (DTC). In one embodiment, an integrated circuit having a power amplifier, an on-chip IMN tuner, and a selector switch is configured to be coupled to an off-chip set of IMN components. In another embodiment, an integrated circuit having an on-chip IMN tuner and a selector switch is configured to be coupled through an off-chip set of IMN components to a separate integrated circuit having an RF power amplifier.

A system comprising a battery, an antenna, a radio frequency coupler, operably placed in a transmit path of the antenna, that is configured to generate an output signal detailing an amount of power reflected back to a radio frequency power amplifier, a radio frequency signal conditioning circuitry that is configured to receive the output signal from the radio frequency coupler and convert the output signal for processing by an analog to digital converter, and a microprocessor that is configured to adjust a charging voltage for the battery based on whether a change in a thickness displacement of the battery, calculated from the output signal, exceeds a swelling response threshold.

The application discloses a kind of linear frequency modulation signal generating device and method, including integrated mutual injection laser for generating single periodic state optical signal, optical signal is divided into two beams by optical fiber splitter, one of which sequentially passes through short delay unit, first photoelectric detector and then enters first electric coupler, the other sequentially passes through long delay unit, second photoelectric detector and then enters first electric coupler, the electric signal synthesized by the first electric coupler is amplified by the radio frequency power amplifier and then input into the electric splitter and divided into two ways, one of which outputs linear frequency modulation signal, the other is coupled with driving signal input into the second electric coupler and then directly modulated onto integrated mutual injection laser.The application can generate linear frequency modulation signal with high stability, high purity and large time-bandwidth product, and the structure of the device is exquisite, easy to integrate and low in cost.

The present application relates to the technical field of wireless communications. Disclosed are a digital pre-distortion processing method and apparatus, and a terminal device and a computer storage medium. The digital pre-distortion processing method comprises: receiving original input data of a radio-frequency power amplifier; pre-processing the original input data to obtain compressed data; and performing nonlinear processing on the compressed data, so as to obtain output data as actual input data of the radio-frequency power amplifier.

The application relates to the technical field of electronic circuits, in particular to a radio frequency power amplifier link, a radio frequency link and an electronic device. The radio frequency power amplifier link comprises at least gain modules, an input power division module, a driving module and a final power amplifier module which are sequentially connected; wherein the driving module comprises at least two driving amplification links, the input ends of the driving amplification links are respectively connected with the input power division module, the output ends of the driving amplification links are respectively connected with the final power amplifier module, the driving amplification links are connected in an E-Doherty architecture, each driving amplification link comprises at least a pre-driving amplifier and a main driving amplifier which are sequentially connected, and each driving amplifier in the driving amplification link is connected in an E-Doherty architecture. The radio frequency power amplifier link has an overall effect.

This invention discloses a power amplifier power selection circuit and an RF circuit, comprising: a system power supply, an RF power supply, a first load switch, a second load switch, a CPU, an RF circuit, and an RF power amplifier; the system power supply is connected to the RF power amplifier via the first load switch; the RF power supply is connected to the RF power amplifier via the second load switch; the CPU is connected to the first and second load switches, and the RF circuit is connected to the CPU and the RF power amplifier; the CPU controls the on / off state of the first and second load switches based on signal feedback between the RF circuit and the RF power supply, selecting either the system power supply or the RF power supply to power the RF power amplifier. This invention utilizes the first and second load switches to select either the system power supply or the RF power supply to power the RF power amplifier, enabling the system power supply to directly power the RF power amplifier, thereby reducing the number of RF power supply modules, shrinking the motherboard area, and reducing hardware costs.

The embodiment of the invention provides a balun, a radio frequency power amplifier, a radio frequency front-end module and electronic equipment, and the balun comprises a primary coupling line which comprises a first primary line and a second primary line which are distributed at an interval; the secondary coupling line comprises at least two first secondary lines, at least two second secondary lines, at least two first connecting lines and at least one second connecting line, the at least two first secondary lines are arranged around the first primary line, and the at least two second secondary lines are arranged around the second primary line; the secondary coupling line is wound by at least two circles, each first secondary line is connected with one second secondary line through one first connecting line to form one circle of the secondary coupling line, and different circles of the secondary coupling line are connected through the second connecting lines. The Balun provided by the embodiment of the invention has the characteristics of small area, low insertion loss and high impedance conversion ratio, can improve the insertion loss and bandwidth performance of the power amplifier when being applied to the radio frequency power amplifier, and is beneficial to the volume miniaturization of the radio frequency power amplifier.

The application relates to the field of electronic technology. The application provides a radio frequency power amplifier and an electronic device. The radio frequency power amplifier comprises a carrier amplification path, a carrier bias circuit connected with an input end of a carrier amplifier, and a first signal is first amplified; a peak value amplification path, a peak value bias circuit connected with an input end of a peak value amplifier, and a second signal is second amplified; a linearization circuit, an input end connected with the carrier amplification path, and an output end connected with the peak value bias circuit; when the power of the first signal is less than or equal to a power threshold value, the bias current of the peak value bias circuit flows through the linearization circuit, so that the gain of the peak value amplifier is not established; when the power of the first signal is greater than the power threshold value, the bias current of the peak value bias circuit flows through the input end of the peak value amplifier, so that the gain of the peak value amplifier is improved. Through the application, the linearity of the radio frequency power amplifier can be improved.

The application provides a power amplifier bias voltage timing control circuit and belongs to the technical field of radio frequency power amplifiers.The circuit comprises a power amplifier, a gate voltage power supply module, a drain voltage power supply module, an inverter, a first reference voltage module, a second reference voltage module, a first comparator, a second comparator, a processor, a three-input logic AND gate, an NPN transistor, a PNP transistor, an energy storage capacitor and a radio frequency choke.The output voltage of the gate voltage power supply module is converted into a negative voltage by the inverter and is supplied to the gate of the power amplifier.When the TDD timing sequence voltage output by the first comparator, the second comparator and the processor is at a high level, the three-input logic AND gate outputs a high level, at this time, the drain voltage power supply module supplies power to the drain of the power amplifier through Q2, and when the three-input logic AND gate circuit outputs a low level, the power amplifier is turned off, and C1 and L1 are rapidly discharged through the transistor Q4.Under the premise of meeting the power amplifier bias voltage power-on and power-off timing sequence protection, the application realizes the rapid switching of the GaN power amplifier in the on and off states and the rapid switching of the charging and discharging of the power amplifier energy storage capacitor in the mobile communication TDD timing sequence.

Power amplifier circuitry is disclosed having an inverse Class-D amplifier functioning as a power amplifier and self-biasing circuitry generating gate bias voltages for switching type power transistors within the power amplifier. The self-biasing circuitry includes a low-dropout regulator that generates and applies a gate bias voltage in response to a feedback current scaled according to the power amplifier's operating current. A current-based digital-to-analog converter is configured to generate the reference current based on a received digital value. Additionally, a digital processor is configured to generate the digital value in response to the gate bias voltage. The power amplifier circuitry enhances performance and efficiency while ensuring precise control over power transistors'operation, offering advantages for various applications requiring radio frequency signal amplification.

The invention discloses a four-dimensional antenna array system based on a grid time modulation active radio frequency module, and belongs to the technical field of wireless communication and radio frequency. According to the system, the grid bias control of the radio frequency power amplifier is combined with the time modulation time sequence of the four-dimensional antenna array, so that the same power amplifier has signal amplification and high-speed on-off functions. In the working process of the four-dimensional antenna array, the grid bias voltage is periodically switched, so that efficient time modulation of the radiation unit is realized, a signal is amplified during the turn-on period, and zero static power consumption is realized during the turn-off period. According to the four-dimensional antenna array, the problems of insertion loss and static power consumption in the turn-off period of a traditional radio frequency switch and power amplifier framework in the four-dimensional antenna array are effectively solved, the system efficiency is remarkably improved, the four-dimensional antenna array is particularly suitable for being applied to the four-dimensional antenna array with low duty ratio, multiple beams and rapid beam scanning, and the four-dimensional antenna array has the advantages of being simple in structure, low in cost, high in modulation speed and the like.

The embodiment of the invention provides electronic equipment and a power supply method, relates to the technical field of terminals, solves the problem of board vibration noise, and improves the call experience of a user. According to the specific scheme, a power module is used for supplying power to a radio frequency power amplifier in a sending time slot when the electronic equipment is in a call scene, so that the radio frequency power amplifier amplifies a radio frequency signal to be sent by the electronic equipment. The power supply module is further used for providing a first voltage for the radio frequency power amplifier in a first receiving time slot when the electronic equipment is in a call scene and the distance between the electronic equipment and the user is smaller than a preset distance. The power supply module is further used for providing a second voltage to the radio frequency power amplifier in a second receiving time slot when the electronic equipment is in the call scene and the distance between the electronic equipment and the user is greater than or equal to the preset distance, and the second voltage is smaller than the first voltage. The embodiment of the invention is used for the handheld call process of the electronic equipment.

The application discloses a kind of energy collection GFSK modulation and demodulation wireless transceiver, it is characterized in that, including GFSK demodulator, GFSK modulator, power supply management module, internal control module, radio frequency energy collection module;The GFSK demodulator is connected with transceiving antenna by low-noise amplifier, the GFSK modulator is connected with transceiving antenna by radio frequency power amplifier;The internal control module is connected with GFSK demodulator, GFSK modulator, the GFSK demodulator is used to demodulate received wireless signal, the GFSK modulator is used to modulate the wireless signal that emits;Wherein, the radio frequency energy collection module connects power supply management module, the radio frequency energy collection module is converted into electric energy by energy collection antenna and collects radio frequency energy, and the power supply management module is used to manage the electric energy that radio frequency energy collection module exports and is powered for wireless transceiver.

An adaptable, multistage, multi-rate digital predistortion system that can increase the accuracy of the distortion applied to a power amplifier input signal is disclosed. Further, the digital predistortion system can be implemented using a reduced circuit area by reducing a number of coefficients used by the models applied to generate the distortion compensation signal. Further, the system can implement an improved digital predistortion adaptation engine that improves an adjacent channel leakage ratio of the digital predistortion system. Moreover, the system can compensate for non-linear impairments due to analog / RF circuits and systems and improve at least the following metrics: Error vector magnitude (EVM), adjacent channel leakage ratio (ACLR), spectrum emission mask (SEM), and power consumption of the circuits and systems. An example of circuits and systems is radio frequency power amplifier (RF PA).

This disclosure provides methods, devices, and systems for wireless communications. The present implementations more specifically relate to reducing the power consumption of radio frequency (RF) power amplifiers without sacrificing power efficiency. In some aspects, an RF transmitter may include a signal generator, a power amplifier, and a duty cycle controller. The signal generator is configured to produce one or more RF signals based on a modulation scheme, and the power amplifier is configured to amplify the one or more RF signals for transmission over a wireless communication channel. In some implementations, the duty cycle controller may adjust a duty cycle of each RF signal based on data to be transmitted according to the modulation scheme. By changing the duty cycle of the RF signal, the duty cycle controller may toggle the output power of the power amplifier and thus modulate the amplitude of the output waveform to carry the data.

The invention provides an output efficiency control method, an output efficiency control device and radio frequency power supply equipment, the output efficiency control method is applied to the output efficiency control device, and the output efficiency control device is used for controlling the output efficiency when a radio frequency power amplifier device outputs radio frequency electric energy. The output efficiency control device comprises an adjustable impedance module, and the adjustable impedance module has an adjustable impedance value. The output efficiency control method comprises the following steps: continuously acquiring the output efficiency of the radio frequency power amplifier device when outputting radio frequency electric energy at a preset interval; and determining whether the output efficiency obtained each time is the to-be-adjusted efficiency or the target efficiency according to the preset efficiency and a preset threshold value. And when it is determined that the output efficiency obtained at any time is the efficiency to be adjusted, controlling and adjusting an impedance value of the adjustable impedance module in a time period from the current output efficiency obtaining to the next output efficiency obtaining as a target impedance value. The output efficiency control requirement of the radio frequency electric energy can be met.

The embodiments of the present application relate to the field of electronic devices. Provided are a foldable device and a flexible printed circuit. The present application aims to reduce the space of a hinge for accommodating interconnecting wires and save on hinge-crossing resources. In the specific solution, the foldable device comprises a radio-frequency integrated circuit, a system on chip, a first power management chip, a second power management chip, a first main body and a second main body. The radio-frequency integrated circuit and the first power management chip are disposed on the first main body; the system on chip and the second power management chip are disposed on the second main body; and the second power management chip does not supply power to the radio-frequency integrated circuit and the first power management chip. Electrical components on the second main body are powered by a second battery, and electrical components on the first main body are powered by a first battery. Hinge-crossing power lines are reduced and hinge-crossing resources are saved on. A cellular antenna is disposed on the first main body, and a short-range antenna is disposed on the second main body. A radio-frequency power amplifier and the system on chip are disposed on different main bodies, thereby avoiding heat concentration.

A radio frequency power amplifier includes: a main amplifier, a main matching circuit, an auxiliary amplifier, an auxiliary matching circuit and an impedance conversion circuit. The main amplifier is configured to output a first amplified signal. The main matching circuit is connected between the main amplifier and the combining node and is configured to adjust a phase of the first amplified signal and raise an output impedance of the main amplifier to a first impedance. The auxiliary amplifier is configured to output a second amplified signal. The auxiliary matching circuit is connected between the auxiliary amplifier and the combining node and is configured to keep a phase of the second amplified signal and raise an output impedance of the auxiliary amplifier to a second impedance. The impedance conversion circuit is connected to the combining node and is configured to raise the impedance at the combining node to a transmission impedance.

The application discloses a normal distribution weight-based wideband power amplifier circuit real frequency matching method, which is applied to the communication field and aims at the frequency point performance compromise in the existing wideband matching method and the problem that the existing wideband matching method cannot adjust a cost function according to actual application requirements; the application adopts a normal distribution to give different weights to different frequency points in a bandwidth, wherein according to the properties of the normal distribution, proper mean value of the normal distribution can make the central frequency in the bandwidth have the highest weight, and further proper standard deviation can obtain the weights of other frequencies and the ratio of the weight of the central frequency, the method can design a better matching network by using the characteristics that most actual systems conform to the normal distribution, so as to improve the matching network performance of the power amplifier, and further design a radio frequency power amplifier with the characteristics of high bandwidth and high conversion efficiency.

The present disclosure relates to methods and system that provides techniques of designing amplifiers with controllable gain for electrical signals / power based on capacitively transduced Micro and / or Nano electromechanical resonators. The present disclosure provides techniques of implementing an RF voltage amplifier, a phase shift amplifier, and / or an RF power amplifier through capacitively transduced Micro / Nano electromechanical resonators. In some embodiments, the amplifier is narrow-band with the centre frequency specified by the resonant frequency of the Micro / Nano electromechanical resonators. In addition, the present disclosure provides a technique by which a set of capacitively transduced Micro / Nano electromechanical resonators are implemented as RF power amplifier with multiple inputs and multiple outputs with the output voltage being measured at electrically floating electrodes that are capacitively coupled with the resonator. These electrically-floating electrodes can also be used to sum various output signals from a resonator and signals output from various resonators.

A pulse-shaping network configured for use in a radio frequency (rf) power amplifier system, the pulse-shaping network comprising: a coupled magnetic element comprising a first inductive element magnetically coupled to a second inductive element, the first inductive element comprising a first winding disposed about a first portion of a core, and the second inductive element comprising a second winding disposed about a second portion of a core, wherein the first and second inductive elements are electrically coupled to provide three output terminals of the coupled magnetic element.

A radio frequency (RF) dielectric heating system includes a solid-state RF power generator, a matching network electrically coupled to the RF power generator, and a dielectric heating applicator electrically coupled to the matching network and including electrodes for applying RF power to a dielectric material. A solid-state RF power generator can include a power supply, an RF power amplifier stage electrically coupled to the power supply, and a control system electrically coupled to and configured to control the RF power amplifier stage. The control system can be configured to regulate an output voltage of the RF power generator to provide a constant RF power generator output current to maintain a constant voltage across the applicator electrodes. Examples of RF power generators and methods for RF dielectric heating are also disclosed.

The invention provides a radio frequency power amplifier protection system. The radio frequency power amplifier protection system comprises a software monitoring module, a hardware protection circuit module and a current detection module, the current detection module detects the current of the radio frequency power amplifier; the data is output to the software monitoring module through analog-to-digital conversion; meanwhile, the current signal is converted into a voltage signal to be output to the hardware protection circuit module; when the current is normal, the software monitoring module outputs a normal VGG signal; the hardware protection circuit comprises a comparison amplifier, a switching tube and an operational amplifier; the comparison amplifier controls whether the switching tube is switched on or not according to the voltage signal output by the current detection chip and a preset voltage threshold value; the switch tube is connected with the operational amplifier, and the operational amplifier controls a grid voltage signal of the radio frequency power amplifier according to the VGG signal and the switch tube conduction signal. Through a dual protection mechanism of a hardware circuit and a software system, response to abnormal current is faster, and the advantage that the software system can be integrated and intelligentized is reserved.

This disclosure provides a radio frequency power amplifier circuit. An electronic device may include a wireless circuit comprising a power amplifier having one or more common-source stages. Each stage may include a power transistor and, if desired, a capacitor neutralizing transistor. Each transistor may include a collection of unit cells, each unit cell comprising an elongated drain contact, a first elongated source contact and a second elongated source contact, and a first gate contact and a second gate contact. The source contacts may extend parallel to the drain contact along a first and a second side of the drain contact. The gate contacts may extend orthogonally to the drain contact along a third and a fourth side of the drain contact. The dual-gate connection of each unit cell can be used to reduce the gate resistance of the corresponding transistor. The first power transistor and the second power transistor may be laterally interposed on a substrate between the first capacitor neutralizing transistor and the second capacitor neutralizing transistor. This can be used to reduce area footprint while eliminating differential-mode parasitic effects.