147 results about "Power gain" patented technology

A method of audio processing includes calculating an estimated echo residual power based on a long-term amount of echo cancellation as indicated by an estimated power gain profile, where the estimated power gain profile is based on a reference signal and an echo residual signal. Echo suppression of the echo residual may then be performed based on the estimated echo residual power.

The invention relates to the technical field of radio frequency modules, and discloses a radio frequency module power amplifier efficiency test method and system, and the method comprises the steps: connecting a signal generator, a power meter, a spectrum analyzer and a DC power supply with a to-be-tested power amplifier, and obtaining a layered power amplifier efficiency test system; establishing a continuous wave test model and a modulation signal test model to obtain compensation parameter data; inputting a first test signal to the to-be-tested power amplifier to obtain power gain data and standardized efficiency data; inputting a second test signal to the to-be-tested power amplifier to obtain adjacent channel leakage power ratio data; performing total efficiency analysis and isolation efficiency analysis on different working states to obtain a layering efficiency analysis result; and carrying out standardization processing on a hierarchical efficiency analysis result, establishing power measurement error evaluation and efficiency calculation error evaluation, and obtaining a power amplifier efficiency test report, thereby realizing comprehensive evaluation on the efficiency characteristics of the power amplifier in different working states.

The invention discloses a switching loss optimization control method and system of an energy storage DC converter. Comprising the following steps: firstly, acquiring battery side voltage / current and bus side voltage / current of the energy storage direct current converter; calculating according to the battery side voltage and the bus side voltage to obtain the voltage ratio of the two sides of the energy storage direct current converter; then, control power is obtained through calculation according to the battery side voltage / current and the bus side voltage / current; then, determining the working mode of the dual-active bridge circuit by using the control power of the energy storage direct-current converter; and finally, according to the working mode of the dual-active bridge circuit, the actual power of the dual-active bridge circuit is adjusted, and the switching loss optimization of the energy storage DC converter is completed. When the battery side voltage, the bus side voltage and the load power of the circuit are changed, the control power of the controller can be continuously changed, smooth transition is realized among all working modes, the output signal and the power gain are basically linear, and the dynamic response speed can be improved.

The invention provides a direct-current electric energy meter self-calibration method and system. The method comprises the following steps: acquiring an internal high-precision low-temperature drift voltage reference signal; converting the voltage reference signal into an analog calibration voltage signal on a sampling resistor by controlling a direct current standard voltage generation circuit according to the voltage reference signal; converting the voltage reference signal into an analog calibration current signal in a current loop by controlling a DC voltage-current conversion circuit according to the voltage reference signal; obtaining a current environment temperature, and calculating a calibration gain at the current temperature according to a preset temperature coefficient; according to a theoretical calibration value, calculating a voltage gain, a current gain and a power gain of the sampling voltage value and the sampling current value, and writing the gains into a memory; and correcting the reference voltage signal according to the obtained temperature calibration gain, and performing temperature compensation.

The invention relates to a closed-loop power control device based on power synchronous detection and multi-point compensation, and the device comprises a power meter which is used for detecting the transmitting power and the feedback power at the same time; the gain calculation module is used for calculating a transmission link gain compensation value according to the detected transmission power and feedback power; the first transmitting link gain compensation module is arranged at the front end of the pre-distortion processing module in the divergent link and is used for performing gain compensation on the pre-distortion processing module; the second transmitting link gain compensation module is arranged at the front end of a power amplifier in a transmitting link and is used for performing gain compensation on the power amplifier; and the control module is used for adjusting the compensation values of the first transmitting link gain compensation module and the second transmitting link gain compensation module according to the transmitting link gain compensation value. According to the invention, the power of the transmitting link and the power of the feedback link can be synchronously detected, and an enough gain adjustment range can be ensured.

The invention belongs to the field of particle accelerator microwaves, and particularly relates to a C-band compact spherical microwave pulse compression device which comprises a shell, a dual-polarization mode coupler and a circular waveguide, a spherical energy storage cavity is formed in the shell, and the circular waveguide and the spherical energy storage cavity are communicated through a coupling hole; the dual-polarization mode coupler comprises a rectangular waveguide, a butterfly-shaped matching section and a cylindrical matching section. According to the klystron radio frequency pulse compression circuit, the radio frequency pulse with the pulse width of 2.5 microseconds of the klystron can be compressed to 300ns, the average power gain in a single pulse is more than 4 times, the peak power gain is 6.3 times, and the compression efficiency is about 54%. According to the dual-polarization mode coupler, the functions of power distribution, mode conversion and polarization mode generation are synchronously realized, a TE10 mode in a rectangular waveguide is converted into two polarization TE11 modes which are equal in amplitude and orthogonal in phase, and then the two orthogonal TE114 modes are excited in a spherical energy storage cavity.

The invention discloses a phase-only array wide main lobe transmitting power pattern synthesis method based on rank-one matrix optimization, which comprises the following steps of: constructing a wide beam power pattern synthesis problem model of minimum power gain in a maximum main lobe region, an objective function in the wide-beam power pattern synthesis problem model is a maximum and minimum fraction objective function; introducing a first auxiliary variable, and converting a maximum and minimum fraction objective function form into a maximum and minimum integer objective function form by using generalized fraction programming; and introducing a second auxiliary variable to equivalently represent the problem of maximization and minimization as a minimization form, and solving by using an equivalent rank-one method, a continuous convex approximation method and a penalty method to obtain an optimal phase-only emission weight.

The invention provides an interval adaptive signal detection method and system based on a digital channelized receiver, and belongs to the field of signal detection in passive radars. The problems that in the passive radar signal receiving process of an existing digital channelized receiver, aliasing of signals and broadband noise exists, and power gains of different frequency bands are unequal, so that channelized signals cannot be normally detected are solved. The amplitude and phase information of M paths of signals are obtained by designing a filter bank, performing multiple serial-parallel conversion processing on input data and performing IFFT operation and CORDIC operation on data output by filtering K paths, then m-point self-correlation accumulation is performed on the amplitude of the M paths of signals, and the amplitude and phase information of the M paths of signals is obtained. Meanwhile, a more flexible threshold calculation method is provided, the working and signal detection bandwidth of the channelized receiver is refined, and a new scheme is provided for improving the signal detection adaptivity of the digital channelized receiver. The method is suitable for signal detection in a scene with non-uniform interference and gain distribution in the working bandwidth of the receiver.

The invention provides a covert communication method based on STAR-RIS and full-duplex cognitive interference. The method comprises the following steps: establishing a covert communication system model based on STAR-RIS and full-duplex cognitive interference; based on a binary hypothesis testing problem, evaluating a false alarm probability and a missed detection probability of hidden user UR spectrum interception; calculating the false alarm probability, the missed detection probability and the detection error probability of malicious monitor UW detection based on the average receiving power of the malicious monitor UW and the judgment criterion; obtaining the optimal detection threshold and the minimum detection error probability of the malicious monitor UW based on the definition of the detection error probability and the monotonicity of the false alarm probability and the missed detection probability under different classifications; the minimum average detection error probability of the malicious monitor UW is calculated based on the statistical magnitude of the channel hypothesis and the channel power gain. According to the method, the interference signal is transmitted by adopting the full-duplex hidden user, hidden communication is ensured, the inhibition effect of the interference of the direct and cascade double links on monitors in the same area is better, and the probability that information is detected can be effectively 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 invention provides a miniaturized high-power gain two-stage pulse compression energy multiplier, and belongs to the technical field of pulse compression energy multipliers, and the energy multiplier comprises a first-stage compression cavity input waveguide port which is used for receiving a radio frequency signal; the working mode of the first-stage compression cavity is TE11n, the first-stage compression cavity is a first spherical cavity used for carrying out first-time pulse compression on radio frequency signals, and the first-stage compression cavity is fixedly connected with the first-stage compression cavity input waveguide port; the first-stage compression cavity 3dB orthogonal polarization coupler is used for converting a TE10 mode in the rectangular waveguide into two orthogonal polarization TE11 modes in the circular waveguide, and the first-stage compression cavity 3dB orthogonal polarization coupler is fixedly connected with the first-stage compression cavity through a coupling hole; the working mode of the second-stage compression cavity is TE11n, and the second-stage compression cavity is a second spherical cavity used for conducting second-time pulse compression on signals output by the first-stage compression cavity. Conversion from a low-power long microwave pulse to a high-power narrow-pulse-width microwave pulse is realized, and the output power gain is improved.

The invention discloses a power distribution network coordination control method and device based on an average field game. The method comprises the following steps: giving a power constraint of each inverter; and based on the inverter model, constructing an aggregation model corresponding to the plurality of inverters in the power distribution network. Constructing a first objective function according to supply and demand balance of the power distribution network; and constructing a second objective function based on the power gain, the frequency adjustment gain and the operation loss of the inverter. And obtaining a mean field game objective function by combining a mean field theory, the first objective function and the second objective function. And solving the average field game objective function by adopting a strategy iterative algorithm to obtain a power control strategy of the inverter in the power distribution network. An aggregation model of a plurality of inverters is constructed, a mean field game objective function is obtained based on supply and demand balance of a power distribution network and economic benefits generated by the inverters and in combination with a mean field theory, then a power control strategy of the inverters is solved, and the economic benefits are maximized while stable operation of the power grid is ensured when the inverters are connected to the power grid.

The invention provides a phased array transmitting directional diagram synthesis method for maximizing the minimum power gain of a wide main lobe, and a phase-only transmitting directional diagram is synthesized and described as a non-convex constraint fraction programming problem with a maximum and minimum fraction objective function and constant modulus constraint by taking the design criterion of obtaining higher power gain in an expected wide main lobe. According to the problem, the minimum power gain in the main lobe region can be maximized, and the power radiation efficiency can be effectively improved on the premise of not losing the synthetic performance of the directional diagram. According to the method, an effective solving algorithm is designed by using an alternating direction multiplier method and a successive convex approximation technology, and a non-convex constraint fractional programming problem is converted into a series of convex problems to be solved. Simulation results show that the method provided by the invention can generate a power gain directional diagram with better performance than a typical SBPS beamforming method.

The invention relates to a radio frequency feed link power optimization method and device based on an improved genetic algorithm, and the method comprises the steps: setting a design index of a radio frequency feed link according to the composition of the radio frequency feed link, and building a microwave assembly parameter library; based on the design index of the radio frequency feed link and the microwave component parameter library, constructing an optimization model of the radio frequency feed link by taking the maximum power gain as a target function and combining at least one constraint condition of interlayer mutual exclusion constraint and noise constraint; and based on the optimization model, solving an optimal design index of the radio frequency feed link to obtain a technical scheme meeting preset power gain and noise coefficient requirements. Therefore, the problems that the multi-objective optimization requirement cannot be considered, global optimal configuration is difficult to realize in a complex parameter space, the link power distribution is not uniform, the system performance is limited and the like due to the fact that the radio frequency feed link design generally adopts a method of manually depending on an empirical formula or manual parameter adjustment are solved.

The invention belongs to the technical field of terahertz communication physical layer security, and particularly relates to a terahertz physical layer key generation method based on leaky-wave antenna space-spectrum coupling characteristics. According to the invention, the sensitivity of the effective antenna gain of the leaky-wave antenna to the frequency and the spatial propagation direction is utilized to make up for the defect of low eavesdropping channel doubtful degree caused by lack of small-scale fading in terahertz communication, and the conditional generative adversarial network is designed to accurately speculate the equivalent channel power gain. A physical layer key is generated based on the estimated channel power gain. According to the method, the channel power gain can be accurately estimated from the received signal strength with noise and auxiliary information, the reciprocity of an equivalent channel is enhanced, and the method has a lower key mismatch rate and a higher key generation rate; under the condition of different signal-to-noise ratios, good key generation performance can be kept.

The invention provides an intelligent metasurface optimal position deployment method and system in an electric power scene, and the method is characterized in that the method comprises the following steps: constructing a single-input single-output system model for the inspection of a multi-intelligent metasurface (RIS)-assisted unmanned aerial vehicle, the system comprises a base station, an unmanned aerial vehicle and a plurality of RISs, the RIS is deployed in a candidate site set # imgabs0 # between a base station and an inspection area, the height # imgabs1 # azimuth angle theta i and the number Ti of daughter boards of each RIS are adjustable, and the inspection area is divided into N grids; establishing a channel model, and calculating average power gains of direct connection and cascade channels; an optimization problem with the goal of minimizing the total deployment cost is constructed, the total deployment cost comprises RIS site fixed cost and daughter board hardware cost, and the constraint condition is that the system coverage rate is not lower than a preset threshold value eta min; and converting the optimization problem into an integer linear programming problem, introducing a binary variable to represent RIS deployment configuration, and solving through a branch definition algorithm to obtain the optimal RIS position, height, azimuth angle and daughter board number.

The invention relates to the field of high-frequency electronics, and discloses an ultra-wideband traveling wave tube which comprises a focusing control electron gun, a slow wave system and a three-stage depressed collector. The focusing control electron gun is used for providing stable electron beams and realizing effective focusing and acceleration of the electron beams through a cathode assembly, a heating wire, a bunching electrode and an anode assembly which are accurately designed; the slow wave system is composed of an input high frequency and an output high frequency, high-efficiency energy exchange between an input signal and an electron beam is ensured through a conical spiral line and a composite tube shell structure, and therefore signal amplification is achieved. The three-stage depressurization collector effectively recovers residual electron beams through a step-by-step depressurization design, energy loss is reduced, and the total efficiency of the traveling wave tube is improved. The traveling wave tube can provide output power exceeding 100 W in the frequency band of 2-18 GHz, the gain is larger than 25 dB, and the total efficiency is larger than 30%. Due to the excellent performance, the method can be widely applied to the fields of communication, radar, electronic countermeasures and the like.

The invention provides a GaAs PHEMT-based power amplifier. The GaAs PHEMT-based power amplifier comprises an input matching circuit, an inter-stage matching circuit and an output matching circuit which are connected in sequence, and the output matching circuit adopts a reactance compensation network matching mode. The class E power amplifier obtains excellent performance, the reactance compensation technology is used in the frequency range of 2.45-2.85 GHz, the power additional efficiency PAE is 61%, the output 1dB compression point is larger than 29 dBm, and broadband, high efficiency and high power are achieved; the invention relates to a broadband hybrid class E power amplifier combining parallel circuit load and reactance compensation technology, the bandwidth of a diode parameter amplifier is improved by using the reactance compensation technology, and the output impedance is matched by designing a matching network as a low-pass network. The class-E power amplifier has the characteristics of high gain and high efficiency, and keeps good performance in the aspects of output, power gain and PAE.

The invention relates to the technical field of wireless communication, in particular to a communication method, device and system. According to the invention, the subcarrier planning corresponding to the first bandwidth can relate to two 996-tone DRUs, four 996-tone DRUs, eight 242-tone DRUs or sixteen 106-tone DRUs. According to the invention, the subcarrier planning corresponding to the first bandwidth is perfected, so that each DRU can reach a relatively large power amplification factor, and the sending power of the communication device is improved. The application can support the IEEE (Institute of Electrical and Electronic Engineers) protocol, such as an IEEE 802.11 be / Wi-Fi 7 / EHT (Wireless Fidelity) protocol, an IEEE 802.11 bn / UHR / Wi-Fi (Wireless Fidelity) protocol, an IEEE 802.15 / UWB (Ultra Wideband) protocol, an IEEE 802.11 bf / perception protocol, a millimeter wave MMW (Millimeter Wave) protocol and the like.

The present disclosure provides a trusted calibration method and system for a charge-discharge load monitoring terminal, including: setting an electric energy verification device to a first parameter to calibrate the meter constant of the charge-discharge load monitoring terminal; setting the electric energy verification device to a second parameter to calibrate the power gain of the charge-discharge load monitoring terminal; enlarging the meter constant of the electric energy verification device by a specified multiple and reducing the calibration value of the meter constant register of the charge-discharge load monitoring terminal by a specified multiple, setting the electric energy verification device to a third parameter to calibrate the phase gain of the charge-discharge load monitoring terminal; setting the electric energy verification device to a fourth parameter to calibrate the voltage and current gain of the charge-discharge load monitoring terminal. Among them, the influence of the stability of the standard source power supply on the calibration accuracy is reduced; since the meter constant of the electric energy verification device is enlarged by a specified multiple and the calibration value of the meter constant register of the charge-discharge load monitoring terminal is reduced by a specified multiple, the pulse output is accelerated and the calibration speed is improved.

The present application relates to a kind of load self-awareness wide range error calibration method and system for internet of things electric energy meter.The method obtains the cycle level voltage, current sampling data and current range state of electric energy meter, extracts current step slope, power factor mutation quantity and harmonic envelope attenuation characteristics, judges whether range boundary event occurs, and determines the range boundary residual window caused by sampling front end gain switching, holding capacitor release and digital filter history state residue.In the residual window, the update of current gain, active power gain, phase compensation and other calibration coefficients is frozen, while normal electric energy metering is maintained;After the end of the residual window, generate or call residual fading template based on stable samples before and after the boundary, and gradually release calibration update weight according to cycle.The present application can reduce the risk of wide range calibration parameter pollution by transition sample in load mutation scene, and improve the stability of internet of things electric energy meter online calibration.

The invention discloses an optimization method for realizing array beam main lobe width maximization based on a relaxation strategy. Relates to the field of wide-beam array antennas. The method comprises the following steps: by taking the minimum width of a transition zone area between a main lobe and a side lobe as an optimization target, constructing an optimization model based on array excitation mapping matrixes of a beam main lobe area and a side lobe area, an expected minimum main lobe power gain value, an upper limit of an iteration increment of a to-be-solved target variable xk and an upper limit of a side lobe level; and solving the constructed optimization model by adopting an iterative updating mode, and when an iteration ending condition is met, obtaining array element excitation based on xk obtained by final solving. According to the optimization method provided by the invention, the non-convex problem of maximizing the main lobe width can be converted into a series of convex optimization sub-problems based on the Taylor expansion and relaxation optimization method under the constraint condition of satisfying the expected minimum main lobe power gain and the side lobe level value; and main lobe width expansion and main lobe power gain value adjustment are synchronously realized by adopting an iterative algorithm.

The invention discloses a radio frequency circuit, method and device, electronic equipment and a readable storage medium, and belongs to the technical field of radio frequency. The radio frequency circuit comprises a signal transmitter used for transmitting a radio frequency signal; the power amplifier is connected with the signal transmitter and is used for amplifying the radio frequency signal; the switch module is connected with the power amplifier, the switch module comprises a first signal channel and a second signal channel, the first signal channel is provided with a filter, the second signal channel is a non-filtering channel, and the switch module is used for switching the power amplifier according to the power gain level of the power amplifier. Selectively conducting a first signal channel or a second signal channel associated with the power gain level to transmit the radio frequency signal; and the antenna is connected with the switch module and is used for receiving the radio frequency signal.

The application discloses a broadband folded full-metal slow wave structure, which comprises a first grid body and a second grid body arranged in a central symmetry; the first grid body and the second grid body enclose an electron beam channel; the first grid body comprises a plurality of metal grids arranged at equal intervals along a direction of a traveling wave; a cross section of the metal grid along the direction of the traveling wave comprises a first rectangular section, a trapezoidal section and a second rectangular section connected in sequence; the first rectangular section is provided with an arc-shaped opening with an opening direction away from the trapezoidal section; the arc-shaped opening comprises a first opening and a second opening; a hollowed-out part of the first opening is a rectangular body, and a hollowed-out part of the second opening is a semi-cylindrical body. By setting the hollowed-out part of the first opening as the rectangular body and the hollowed-out part of the second opening as the semi-cylindrical body, a ring-shaped tip of the slow wave structure is prevented, the slow wave structure is easy to manufacture, the dispersion characteristic is improved to expand a bandwidth, high-frequency loss is reduced, and output power, gain, bandwidth and interaction efficiency of the traveling wave tube are improved.

This invention provides a robust resource scheduling method, apparatus, and device for satellite communication systems, relating to the field of wireless communication technology. The method includes: acquiring real-time environmental data and the channel coefficients at the current moment; determining the channel parameters corresponding to the real-time environmental data using an environment-parameter correspondence table, the channel parameters including the channel time correlation coefficient and the innovation process variance; calculating the statistical characteristics of the channel coefficients at the time to be transmitted based on the channel coefficients and channel parameters at the current moment; constructing a probabilistic constraint relationship using a one-sided Chebyshev inequality based on the statistical characteristics and a preset confidence parameter, calculating the minimum channel carrying power gain at the time to be transmitted that satisfies the preset probability guarantee; and performing resource scheduling based on the minimum channel carrying power gain at the time to be transmitted using a robust proportional fair scheduling algorithm. This invention can improve resource scheduling efficiency.

The invention relates to a receiver with a distributed attenuator. The present disclosure is directed to power gain variation compensation for radio frequency (RF) receivers based on temperature variations. The RF receiver may include an amplification circuit having a plurality of amplifiers and / or a chain of passive elements. A plurality of distributed and / or lumped attenuators disposed at different points between amplifiers and / or passive elements of the chain may attenuate the received RF signal to compensate for gain variations of the plurality of amplifiers and / or passive elements caused by temperature variations. Thus, the distributed and / or lumped attenuator may improve the linear response of the amplifier and / or passive element and the signal-to-noise distortion ratio of the RF signal received at the receiver.

The invention discloses a low-noise amplifier circuit design method, a low-noise amplifier circuit and a low-noise amplifier chip. The low-noise amplifier circuit design method comprises the following steps: constructing a small-signal equivalent circuit diagram of a transistor added into a feedback network; obtaining the input impedance and the output impedance of the transistor according to the small signal equivalent circuit diagram; according to the input impedance and the output impedance, obtaining a feedback gain of a transistor added to the feedback network and an intrinsic gain of a transistor without the feedback network, and according to the feedback gain and the intrinsic gain, obtaining a proportionality coefficient; constructing a noise analysis equivalent circuit diagram of the transistor added into the feedback network; obtaining a total noise coefficient according to the noise analysis equivalent circuit diagram, and obtaining an influence coefficient according to the total noise coefficient; and constructing a contour map about feedback parameters of the feedback network according to the proportionality coefficient and the influence coefficient, and analyzing the gain flatness and noise performance of the transistor according to the contour map. According to the invention, a low noise coefficient, a high power gain and an excellent gain flatness index are synchronously realized in an ultra-wide frequency band.

The invention discloses an automatic gain control method suitable for a burst signal. The method comprises the following steps: S1, pre-judging a noise signal; s2, calculating a power gain deviation value; s3, calculating and judging a noise power value; s4, calculating signal power level saturability; s5, calculating an automatic gain control value; and S6, realizing automatic gain control of the burst signal in a circulation step. Through the automatic gain control method suitable for the burst signal, the confusion of noise level, signal waveform distortion and other conventional automatic gain control algorithms is avoided, and under the conditions that the burst signal characteristics are not weakened and the signal quality is improved, the signal detection capture rate is improved, the omission factor is reduced, and the recognition accuracy is greatly improved.

The present application discloses a method and related device for controlling the wake of a wind turbine generator set, wherein the method includes: when the power-limited wind turbine generator set is a downstream wind turbine generator set affected by the wake under the current wind conditions, obtaining the power limit of the power-limited wind turbine generator set and the unit power before and after executing the current wake control strategy under the current wind conditions; if the unit power exceeds the limit after executing the strategy but does not exceed the limit before executing the strategy, then when the unit power is adjusted to the power limit, and the unit power gain of the power-limited wind turbine generator set is greater than the unit power loss of the upstream wind turbine generator set, correcting the current wake control instruction corresponding to the upstream unit to reduce the unit power to less than or equal to the power limit. The present application solves the problem in the prior art that the setting of the wake control instruction under the restricted state affects the power generation effect of the wind farm.

The invention provides a method for extracting high-frequency characteristics of an indium-phosphorus heterojunction bipolar transistor (HBT). The method comprises the following steps: acquiring S parameter test data of InP HBTs with different sizes; extracting element parameters based on the test S parameters and the T-type small-signal equivalent circuit model of the InP HBT; obtaining a forward current gain and a unidirectional power gain under the radio frequency condition; constructing a frequency extraction model; obtaining a cut-off frequency and a maximum oscillation frequency; and constructing a geometric scalable model of the cut-off frequency and the maximum oscillation frequency based on the change rule of the cut-off frequency and the maximum oscillation frequency along with the size of the device. According to the invention, the method for extracting the cut-off frequency and the maximum oscillation frequency is defined by using the test S parameter; through testing under the multi-size and multi-bias condition, the effectiveness of the method is verified, the precision of the model is improved, and meanwhile, the time for extracting the cut-off frequency and the maximum oscillation frequency is greatly shortened.