364 results about "Frequency multiplier" patented technology

The invention discloses a wavelength-adjustable high-power picosecond all-solid-state laser. The microchip seed source adopts a passive Q-switching principle, can directly generate laser with the pulse width as narrow as 300ps, is high in seed laser efficiency, good in beam quality and large in energy, can synchronously output TTL (transistor-transistor logic) level, and is used for controlling the pulse duration and delay of a 808nm QCW pumping source; the optical isolator protects the front-stage microchip solid laser from being damaged by returned light of the rear-stage amplifier; the single-rod two-way end pump amplifier amplifies laser pulse energy output by the microchip solid laser; the light beam shaper comprises a Galileo laser beam shrinking system and a soft edge diaphragm and is used for shaping light beams; the single-rod one-way end pump amplifier amplifies the pulse energy of the preceding-stage laser; and the frequency multiplier performs frequency conversion on the output laser, and outputs wavelength-adjustable picosecond laser with millifocus magnitude, high power and high beam quality.

An even harmonic multiplier employing complementary current reuse is disclosed. The even harmonic multiplier employs supply voltage and current density scaling to reduce power consumption. Further, by using complimentary NMOS and PMOS transistors, the even harmonic multiplier achieves high areal efficiency. Current reuse causes a reduction in noise at the first harmonic, as the corresponding first harmonic currents from the NMOS and PMOS transistors are in opposite, i.e., canceling, directions. Complementary current reuse is now feasible, as the performance of PMOS transistors at current process nodes is similar to those of NMOS transistors, with appropriate sizing leading to approximately equivalent transconductances. Multiple even harmonic multiplier configurations are possible, with many using transformer circuits at the input and / or the output. The resultant even harmonic multipliers find ready application in millimeter wave radio frequency receivers. The most common even harmonic multiplier is a frequency doubler, which produces a strong second harmonic signal.

A computer-implemented method comprising receiving, by an input device from a host computing device, a display refresh rate for a display, both the display and the input device being communicatively coupled to the host computing device. The method further includes computing, by the input device, a frequency multiplier based on the display refresh rate and a selected report rate of the input device, the report rate corresponding to a frequency at which the input device reports activity of the input device to the host computing device and calibrating, by the input device, the report rate to a new report rate based on the computed frequency multiplier. The method may further include reporting activity of the input device to the host computing device at the new report rate.

A phase lock loop includes a clock multiplier configured to receive a reference clock and output a multiplied clock; a phase detector configured to receive the multiplied clock and a divided clock and output a phase error signal; a loop filter configured to receive the phase error signal and output a control signal; a controllable oscillator configured to output an output clock in accordance with the control signal; and a clock divider configured to receive the output clock and output the divided clock, wherein the clock multiplier is either a frequency doubler or a frequency quadrupler, and a frequency response of the loop filter comprises a first notch at the frequency of the reference clock and a second notch at twice the frequency of the reference clock.

The utility model provides a large-bandwidth 220G terahertz emission front end, which comprises a frequency doubler, a filter, an amplifier, a one-to-two power divider, a first one-to-four power divider and a second one-to-four power divider, wherein the frequency doubler, the filter, the amplifier and the one-to-two power divider are sequentially connected, and the first one-to-four power divider and the second one-to-four power divider are respectively connected with two output ends of the one-to-two power divider. The output end of the first one-to-four power divider and the output end of the second one-to-four power divider are connected with four transmitter frequency doubling amplification modules. According to the utility model, input 15G-21.7 GHz low-frequency signals are subjected to frequency doubling amplification to obtain 30G-42.4 GHz signals, the 30G-42.4 GHz signals are divided into 8 paths of transmitter frequency doubling amplification modules 7 through two power division links, the 8 paths of signals are respectively controlled by a single-pole four-throw switch to obtain 32 paths of signals, the 60-84.8 GHz signals are obtained after frequency doubling amplification, and the 60-84.8 GHz signals are transmitted to the transmitter frequency doubling amplification modules 7. The signals are divided into 64 paths of signals under the control of a single-pole double-throw switch, and the 64 paths of signals are amplified by a frequency tripler to obtain final 180-260GHz emission signals. According to the utility model, emission of multi-channel signals can be simultaneously realized, and the production and manufacturing cost of the terahertz front end is obviously reduced.

An integrated photonics millimeter wave (MMW) radar communication system based on analog phase modulation scheme includes an integrated photonics MMW radar communication signal transmitter, a radar receiver, and a communication receiver. The transmitter includes a radar communication signal analog phase modulation module, an optical frequency comb (OFC) module, an electro-optic modulator (EOM), an optical shaping filter, an optical power divider, a photoelectric detector, an electric power amplifier, and a transmitting antenna that are cascaded sequentially. The radar receiver includes a radar receiving antenna, an electric low-noise amplifier (LNA), an optical phase modulator, an optical bandpass filter (BPF), a low-speed photoelectric detector, an electric low-pass filter, and a low-speed oscilloscope that are cascaded sequentially. In the communication receiver, a communication receiving antenna is sequentially cascaded with an electric LNA, a frequency mixer, and an oscilloscope, and a voltage-controlled oscillator is cascaded with a frequency multiplier and then connected to the frequency mixer.

The invention discloses a differential magnetic coupling millimeter wave terahertz frequency multiplier, which comprises differential paths, the differential paths are used for transmitting differential signals to grids of active transistors, and the two differential paths enhance forward differential mode signals through magnetic coupling and inhibit reverse leakage common mode signals at the same time. According to the invention, the differential channels of the frequency multiplier are magnetically coupled, so that differential-mode signals are enhanced, common-mode signals are suppressed, and the output power, the efficiency and the harmonic suppression ratio of the frequency multiplier are improved.

The invention discloses a magnetic tuning F-type voltage-controlled oscillator based on multi-coil coupling, and the oscillator comprises an F-type oscillation loop which is used for generating an oscillation signal with a required frequency, and carrying out the harmonic adjustment of a frequency spectrum of the oscillation signal; the magnetic tuning transformer is used for adjusting the voltage-current relationship of the oscillation signal in the F-type oscillation loop, changing the equivalent inductance value in the F-type oscillation loop and further adjusting the oscillation frequency; the common-mode resonant capacitor is used for determining common-mode capacitance in the F-type oscillation loop and further reducing the phase noise at the second harmonic through common-mode resonance; the F-class voltage-controlled oscillator is adopted to enhance harmonic waves to achieve frequency tripling to generate millimeter wave oscillation signals, a magnetic tuning mode is adopted to replace a varactor with a low quality factor to control and change resonant frequency, and compared with a traditional LC voltage-controlled oscillator, the voltage-controlled oscillator can obtain lower phase noise and a higher quality factor, and the performance of the voltage-controlled oscillator is improved. And an additional frequency multiplier is omitted for the generation of the millimeter wave oscillation signal.

The embodiment of the invention provides a voltage-controlled oscillator, an oscillator circuit, a chip and electronic equipment, relates to the technical field of communication or radar detection, and can improve the linearity of the voltage-controlled oscillator. The voltage-controlled oscillator comprises a voltage-controlled oscillator resonant cavity, an even harmonic generator circuit and a self-mixing frequency tripler circuit. The voltage-controlled oscillator resonant cavity comprises a voltage transformation diode array and a first-stage mode switching capacitor. The even harmonic generator circuit comprises a group of cross coupling tubes, one end of each cross coupling tube is electrically connected to the two differential ends of the voltage-controlled oscillator, and the even harmonic generator circuit serves as an even harmonic generator and is electrically connected to the self-mixing frequency tripler circuit. The self-mixing frequency tripler circuit comprises a differential unit and a resonant cavity, and one end of the self-mixing frequency tripler circuit is electrically connected to the even harmonic generator circuit. The low-frequency voltage-controlled oscillator and the self-mixing frequency tripler circuit achieve current multiplexing, the even harmonic generator circuit serves as a negative resistor of the oscillator and also serves as an even harmonic generator of the self-mixing frequency tripler, and the linearity of the millimeter wave frequency source is improved.

The invention discloses a phase-locked loop reference clock duty ratio calibration circuit, which relates to the technical field of signal frequency and phase control, and comprises a duty ratio detection control module and a duty ratio calibration module, the duty ratio detection control module is used for receiving a reference calibration clock output by the duty ratio calibration module and a high-speed calibration clock output by the phase-locked loop, and outputting a control code to the duty ratio calibration module; the duty ratio calibration module is used for receiving an input phase-locked loop reference clock signal and a control code, adjusting the duty ratio of the reference clock signal under the control of the control code, and outputting a reference calibration clock to the duty ratio detection control module and a frequency multiplier of the phase-locked loop. The input reference clock is calibrated, the duty ratio adjusting range is wide, the adjusting precision is high, the occupied area is small, and the structure is simple.

The invention discloses a balanced frequency tripling structure and terahertz equipment, which are applied to the technical field of terahertz, and comprise an odd-mode excitation structure connected with an input waveguide, a waveguide mode excitation structure connected with an output waveguide, and two coupling lines connected with the odd-mode excitation structure and the waveguide mode excitation structure, the two coupling lines are arranged in parallel to transmit differential signals; one coupling line is connected with a frequency doubling diode, the other coupling line is connected with another frequency doubling diode, and the two frequency doubling diodes form a balanced frequency doubling diode pair. Through the odd-mode excitation structure, electromagnetic waves can be converted into coupling line odd-mode work, so that radio frequency reverse excitation is carried out on the two frequency doubling diodes, and basic conditions for realizing idle harmonic suppression are constructed. And meanwhile, the odd mode excitation structure and the waveguide mode excitation structure can lock even harmonics generated by the frequency doubling diode in a nonlinear manner in the coupling line to form a high-integration-level idle harmonic loop, so that high efficiency of third harmonics can be ensured.

The invention provides a temperature compensation method and device for laser frequency doubling, electronic equipment and a storage medium. The method comprises the steps that the initial temperature of a frequency doubling crystal of a frequency doubling laser is determined according to the power of input fundamental frequency light; adjusting the initial temperature, and determining a target temperature corresponding to the maximum value of the frequency-doubled optical power output by the frequency-doubled laser; according to the invention, active following compensation is carried out on the temperature of the frequency doubling crystal, and the temperature of the frequency doubling crystal is controlled at the target temperature, so that the active following compensation is carried out on the temperature of the frequency doubling crystal, thereby enabling the frequency doubling laser to maintain high output power, and further improving the frequency doubling efficiency of the crystal. Therefore, the laser frequency multiplier can quickly reach a steady state in the power switching process, and accurate dynamic control of the laser frequency multiplication system is realized.

The utility model relates to the technical field of millimeter wave radio frequency communication, and discloses a broadband millimeter wave dual-channel receiver, which comprises two receiving links and a power divider, each receiving link is connected with the power divider, each receiving link comprises an isolator, a frequency mixer and an intermediate frequency amplifier which are sequentially connected from input to output, one input end of the frequency mixer is connected with a frequency multiplier, and the input end of the frequency multiplier is connected with one output end of the power divider; according to the utility model, mutual interference of multiple paths of signals in a test can be effectively prevented, two paths of millimeter wave radio frequency signals can be tested and analyzed at the same time, and the device can be used for various test scenes such as down-conversion test, two paths of radio frequency signal amplitude-phase consistency test, noise coefficient test and the like.

The invention belongs to the technical field of millimeter wave frequency multiplication, and provides a millimeter wave high-order frequency comb frequency multiplier and a preparation method and application thereof. The millimeter wave high-order frequency comb frequency multiplier comprises a substrate layer and an absorption layer which are arranged in a stacked mode. The absorption layer comprises niobium-iridium-tellurium layers and metal electrode layers, parts of the metal electrode layers are in lap joint with the niobium-iridium-tellurium layers, and the four metal electrode layers are symmetrically distributed in the transverse direction and the longitudinal direction. According to the invention, niobium-iridium-tellurium is adopted as the absorption layer, and niobium-iridium-tellurium is a zero-band-gap material, so that the detection spectrum range is wide; meanwhile, niobium-iridium-tellurium is a non-centrosymmetric material and has a relatively large Bell curvature dipole coefficient, so that the niobium-iridium-tellurium frequency multiplier has a nonlinear Hall effect induced by the Bell curvature, and the millimeter wave high-order frequency comb frequency multiplier constructed by the niobium-iridium-tellurium frequency multiplier has a high-order frequency multiplication effect, does not need additional bias voltage and can stably work at room temperature and low temperature. In addition, dependence on a high-frequency millimeter wave-terahertz source is effectively reduced, and a theoretical basis is provided for development of the high-frequency millimeter wave-terahertz source.

The terahertz frequency multiplier comprises an inner conductor leading-out direct connection structure, a transition structure of a micro-coaxial input waveguide, the input waveguide, a micro-coaxial input low-pass filter, a diode pair, a transition structure of a micro-coaxial output waveguide, two micro-coaxial matching circuits and an output waveguide, the first end of the inner conductor lead-out direct-connection structure is directly connected with an external direct-current bias circuit through a micro-coaxial inner conductor, the second end of the inner conductor lead-out direct-connection structure is coaxially connected with the transition structure of the micro-coaxial input waveguide, and the inner conductor lead-out direct-connection structure is used for introducing bias voltage of the external direct-current bias circuit to reduce distortion. According to the invention, the loss introduced by the substrate is reduced, the size of the whole circuit is reduced, and miniaturization is realized. Meanwhile, a traditional direct current filter circuit can be omitted, on one hand, the circuit complexity is reduced, on the other hand, complex conversion of a traditional frequency mixer is avoided, and the circuit loss is further reduced.

The invention discloses a laser control system for a coherent population trapping magnetometer. The laser control system comprises a core control unit, a driving circuit system, a microwave source signal modulation system and an H bridge in bidirectional connection with the core control unit, the driving circuit system comprises a band-gap reference voltage circuit, and the band-gap reference voltage circuit comprises an input end low-power-consumption bias starting circuit and a folding operational amplifier; the core control unit comprises an FPGA (Field Programmable Gate Array) and a temperature control circuit system, and the temperature control circuit system combines an anti-integral saturation algorithm with fuzzy PID (Proportion Integration Differentiation) control and dynamically adjusts PID parameters to realize temperature adjustment; the microwave source signal modulation system comprises an all-digital phase-locked loop, a direct digital synthesizer and a frequency multiplier, and the generation, modulation and amplification of microwave signals are realized through the control of the FPGA. The laser control system is high in microwave source frequency stability and strong in noise suppression capability.

The utility model discloses a broadband low-phase-noise small-step frequency source, which comprises a large step ring and a small step ring, and is characterized in that the large step ring comprises a first power divider, a frequency multiplier, a first frequency mixer, a second power divider, a first voltage-controlled oscillator and a first phase discriminator; and the small step ring comprises a direct digital frequency synthesizer, a second phase discriminator, a second frequency mixer, a third power divider, a loop filter, a second voltage-controlled oscillator and a programmable frequency divider. According to the utility model, a reference signal is divided into three paths of reference signals after being subjected to power division by the first power divider, and the three paths of reference signals are respectively sent to the frequency multiplier, the first phase discriminator and the direct digital frequency synthesizer, so that the homology of the whole circuit is ensured; a broadband low-phase-noise small-stepping signal is generated through multi-stage frequency doubling and phase locking of the large stepping ring and the small stepping ring and a digital frequency synthesis device, and no fractional stray exists, so that the problems that the frequency coverage is not wide enough, the fractional stray exists, and the phase noise is large are solved.

The invention discloses a terahertz broadband frequency multiplier structure based on a gap waveguide, and belongs to the technical field of terahertz frequency multiplication. A microwave signal is fed in from the input end of the broadband frequency multiplier and is input into the nonlinear diode through the low-pass filter, the microwave signal excites the nonlinear diode to generate harmonic waves, and the terahertz signal is selectively output through the high-pass filter and is transmitted to the output port. The terahertz broadband frequency multiplier based on the gap waveguide designed by the invention is wider in working bandwidth and easy to dissipate heat, can effectively avoid the problem that power continuity between spliced frequency bands needs to be considered in frequency band splicing in a terahertz broadband system, and can effectively reduce the complexity of a high-frequency terahertz frequency multiplication link.

The invention provides a multichannel W-band chip and a radio frequency module thereof, the multichannel W-band chip comprises a control system, a local oscillator module, a frequency multiplier, a power divider, a W-band transmitting link and a W-band receiving link, the control system controls the transceiving state of a radio frequency channel, the local oscillator module generates a local oscillator signal and performs chip cascading, the frequency multiplier is used for generating a W-band signal, and the W-band receiving link is used for receiving the W-band signal. The power divider is used for dividing the signals into multiple paths of internal W-band signals and transmitting the signals to the W-band transmitting link or the W-band receiving link, the W-band transmitting link performs phase shift amplification on the internal W-band signals and then outputs the signals to the radio frequency channel for transmission, and the W-band receiving link receives external W-band signals entering from the radio frequency channel and performs frequency mixing with the internal W-band signals; and the generated intermediate-frequency signal is output to an external signal processing part after being filtered and amplified. According to the invention, a multi-channel W-band signal receiving and transmitting function can be realized, and multi-chip cascade connection is supported, so that more receiving and transmitting radio frequency channels can be integrated, and increasingly complicated design requirements of a radar antenna array are met.

The invention discloses an ultra-wideband ultra-low power consumption millimeter wave injection locking quadrupler, which realizes frequency multiplication bandwidth exceeding 100 GHz, 3 dB working bandwidth exceeding 10 GHz, 10 mW total power consumption and 1t under millimeter wave frequency through innovative resonant cavity design, adaptive bias and output equalization technology. And the output power fluctuation of 0.1 dB is obviously superior to that of other existing schemes, and the millimeter-wave radar antenna is suitable for a 76-81 GHz high-performance millimeter-wave radar system.

The invention relates to a band edge enhancement effect-based thin film electric frequency multiplication device, which is characterized in that when a fundamental wave is obliquely incident, voltage is applied to a first electrode layer and a second electrode layer, and the fundamental wave penetrates through the transparent first electrode layer and a thin film layer, is reflected by the second electrode layer and then penetrates out of the first electrode layer through the thin film layer. In the process, the band edge enhancement effect of the thin film layer is utilized to enhance the third-order nonlinear polarizability, so that the generation efficiency of the second harmonic has a sharp peak value at the position of a certain wavelength, and the frequency doubling light corresponding to the fundamental wavelength at the sharp peak value just covers the energy band of the thin film layer. Therefore, the generation efficiency of the second harmonic is greatly improved under the condition that the voltage is applied. Therefore, an extremely high modulation ratio is obtained, and the modulation depth is far higher than that of a traditional electric frequency multiplication device. According to the thin film electric frequency multiplication device based on the band edge enhancement effect, the purpose of using electric frequency multiplication in a nonlinear material to achieve strong modulation can be achieved.

A frequency multiplier includes an oscillator and a harmonic generator. The oscillator has a resonant cavity and a negative resistance unit. The negative resistance unit includes a feedback capacitor and a parasitic capacitor. The feedback capacitor and the parasitic capacitor collectively provide negative resistance for the resonant cavity. The harmonic generator is configured to generate a harmonic signal based on a fundamental frequency signal taken as input. The oscillator is electrically connected to the harmonic generator, and is configured to receive the harmonic signal, and to output an intrinsic signal with the resonant cavity. A frequency of the intrinsic signal is a multiple of a frequency of the fundamental frequency signal.

Embodiments described herein are directed to a position sensor that includes a first receiver coil electrically coupled to a first multiplier to generate a first output, a second receiver coil electrically coupled to a second multiplier to generate a second output, a transmitter coil electrically coupled to an oscillator, the oscillator electrically coupled to a third multiplier to generate a third output, a phase-locked loop electrically coupled to the oscillator and the transmitter coil, a summing circuit configured to receive the first output and the second output and configured to generate a signal, a phase detector configured to receive the signal and the third output, the phase detector outputting a sense signal that is indicative of an angle of the motor position sensor, and a pair of op amps electrically coupled to the phase detector. The op amps configured to output an analog differential signal and a differential phase signal.

The invention discloses an ultrahigh repetition frequency adjustable ultrashort pulse cluster generator which comprises a mode-locked fiber laser, a first fiber coupler, a fiber delay line, a dispersion compensation fiber, a second fiber coupler, a fiber amplifier and an acousto-optic modulator. The first optical fiber coupler, the optical fiber delay line, the dispersion compensation optical fiber, the second optical fiber coupler and the optical fiber amplifier are sequentially connected end to end to form an optical fiber annular cavity, and the annular cavity is used as a frequency increasing device for pulse multiplication; the length difference between the optical fiber annular cavity and a mode-locked cavity in the mode-locked optical fiber laser is adjusted through the optical fiber delay line, and frequency increasing is carried out by using a vernier effect generated by time delay; the ultrahigh repetition frequency ultrashort pulse cluster laser output with adjustable parameters is realized through gain adjustment in the optical fiber annular cavity and synchronous pulse pickup outside the cavity. According to the technical scheme, the structural design is reasonable, the structure is simple, stability is good, sub-pulses are strictly equidistant, parameters are flexible and adjustable, and practicability is good.

The embodiment of the application provides a voltage-controlled oscillator, an oscillator circuit, a chip and an electronic device, relates to the technical field of communication or radar detection, and can improve the linearity of the voltage-controlled oscillator. The voltage-controlled oscillator comprises a voltage-controlled oscillator resonant cavity, an even harmonic generator circuit and a self-mixing tripler circuit. The voltage-controlled oscillator resonant cavity comprises a voltage change diode array and a first mode switching capacitor. The even harmonic generator circuit comprises a group of cross-coupled tubes, one end of the group of cross-coupled tubes is electrically connected to differential two ends of the voltage-controlled oscillator, and the group of cross-coupled tubes simultaneously serves as an even harmonic generator and is electrically connected to the self-mixing tripler circuit. The self-mixing tripler circuit comprises a differential unit and a resonant cavity, and one end of the self-mixing tripler circuit is electrically connected to the even harmonic generator circuit. The low-frequency voltage-controlled oscillator and the self-mixing tripler circuit realize current multiplexing, the even harmonic generator circuit serves as an even harmonic generator of the self-mixing tripler in addition to serving as negative resistance of the oscillator, and the linearity of the millimeter wave frequency source is improved.

The utility model discloses a Ka wave band frequency source based on a phase-locked loop structure, which comprises a master controller, a crystal oscillator module, a phase-locked loop module and a frequency doubling processing module, and the phase-locked loop module is respectively connected with the master controller, the crystal oscillator module and the frequency doubling processing module. The phase-locked loop module comprises a power supply module, a phase-locked loop main chip, a loop filter module and a locking state indication module, and the phase-locked loop main chip is respectively connected with the power supply module, the loop filter module, the locking state indication module and the main controller; the frequency doubling processing module comprises a low-pass filter, a high-pass filter, a fixed frequency attenuator, a power amplifier, a frequency doubling chip and a band-pass filter which are connected in sequence, and the input end of the low-pass filter is connected with the output end of the voltage-controlled oscillator. The frequency output by the phase-locked loop module is input to the frequency multiplication processing module, and the frequency multiplication processing module carries out harmonic suppression, attenuation, amplification and frequency multiplication processing on the input frequency, so that the output frequency has the advantages of low phase noise, wide frequency band and high stability.

The present invention discloses a relay node download method and device based on an optical frequency comb. The present invention is used to address the problem of difficulty for nodes in obtaining frequency information transmitted in a link in a time-frequency information transmission system. The present invention is characterized in that an optical comb signal transmitted and a return optical comb signal in the optical comb-based time-frequency transmission system link are obtained through an optical coupling module. The transmitted optical comb signal is converted into an electrical signal through a photoelectric detection module, and then two electrical signals are obtained through a power distribution module. The center frequencies of the electrical bandpass filters connected to the two electrical signals are then adjusted to obtain low-order harmonic components and high-order harmonic components with a frequency doubled. The return optical comb signal is mirrored, and the two low-order harmonic components are connected to a phase detection module to obtain relative delay information. Based on this delay information, the high-order harmonic components are directly phase-shifted through a phase shift module to restore the original signal. Compared with the prior art, the present invention fully utilizes the characteristic of optical comb signals containing multiple frequency components, avoids the use of complex electrical components such as frequency dividers and multipliers, reduces costs, significantly reduces electrical noise at the download node, and improves the stability of node frequency extraction.

A system for controlling power provided to an electronic device is disclosed herein. The system includes a switching direct current (DC) power source configured to provide an input voltage at a first frequency, a forward converter coupled to the switching DC power source, wherein the forward converter outputs a first voltage and a second voltage, a frequency multiplier coupled to the forward converter and configured to receive the first voltage as an input, a switch coupled to the frequency multiplier and configured to be driven by the frequency multiplier, wherein the switch outputs a fourth voltage, and a voltage multiplier coupled to the switch and configured to be driven by the switch, wherein the voltage multiplier receives the second voltage and outputs a fifth voltage that is greater than the second voltage.

The invention discloses a frequency duplex synthesis method for realizing a terahertz ultra-wideband frequency multiplier, and relates to the technical field of submillimeter wave / terahertz solid-state frequency multipliers, a'frequency division-frequency multiplication-frequency combination 'duplex circuit architecture is adopted, a frequency division circuit and a frequency combination circuit are both based on a hybrid network type waveguide duplexer design, and the frequency division-frequency multiplication-frequency combination duplex circuit design is adopted. The frequency multiplier circuit is realized by adopting a hybrid integrated frequency doubler, the cost is low, the cavity structure is completely processed by adopting a CNC milling process, and the solid-state characteristic is realized; therefore, under the condition that the frequency doubling / frequency conversion efficiency is not reduced, the frequency doubler capable of covering the full frequency band of 170-260GHz (WR-4 frequency band) can be realized, namely, the double advantages of wide frequency band and high efficiency of the frequency doubler are considered, and the technical problem that the wide frequency band and the high efficiency of a submillimeter wave / terahertz schottky frequency doubler at the present stage cannot be achieved at the same time is solved.

This invention belongs to the field of time-frequency unification and relates to a fast discipline method and system based on a high-stability OCXO. The method includes selecting a primary reference source, inputting the reference signal into a phase-locked loop frequency multiplier for frequency multiplication, and inputting the processed high-frequency reference signal into a high-precision phase measurement module. A monitoring and processing platform controls two frequency standard signals output from the OCXO frequency standard source through a control word. The first frequency standard signal of the first channel is input into a phase-locked loop frequency divider, and the second frequency standard signal is output to the high-precision phase measurement module. The third frequency standard signal of the second channel is directly input into the high-precision phase measurement module to measure the phase difference between the high-frequency reference signal and the second frequency standard signal. The monitoring and processing platform outputs an updated control word through a fast discipline algorithm to correct the OCXO frequency standard source parameters. The fast discipline process continues until the OCXO frequency standard source stabilizes and the phase difference with the reference source converges, ending the fast discipline state.