5results about How to "Consistent frequency" patented technology

The present disclosure provides a communication radar integrated optical fiber remote system and a phase locking method. A remote antenna unit is configured to receive a reflected microwave signal, and modulate the amplitude of the microwave signal to obtain an initial optical carrier signal. A dispersion compensation unit is connected with the remote antenna unit and configured to perform dispersion compensation on the initial optical carrier signal to obtain an optical carrier signal. A central unit is connected with the dispersion compensation unit and configured to perform phase locking using the received optical carrier signal to obtain an output optical signal. The frequency of the output optical signal is the same as that of the optical carrier signal, and the phase of the output optical signal is the same as that of the optical carrier signal. A signal output unit is connected with the central unit and configured to output the output optical signal. The present disclosure realizes the consistency of the frequency and the phase synchronization of the output optical signal and the optical carrier signal, realizes low phase noise carrier recovery, and improves the communication and radar performance.

The utility model discloses a kind of flapping-wing aircraft double-wing amplitude differential mechanisms, including motor, steering wheel, rack and two places rocker arm, the inside of each rocker arm is provided with swing straight slot;Limiting frame is provided on rack, and limiting frame is provided with amplitude modulation arc groove, corresponding swing straight slot and amplitude modulation arc groove are provided with amplitude modulation fixed pin, two places amplitude modulation fixed pin are fixedly connected with transmission connecting rod, the other end of each transmission connecting rod is rotatably connected with transmission gear, amplitude modulation arc groove is provided with swing shaft on each transmission gear, and two places transmission gear are engaged with output gear wheel. The utility model's limiting frame can change the power arm stress position of rocker arm by amplitude modulation fixed pin, to change the vibration amplitude of two places rocker arm;Motor drives two places transmission gear to rotate by output gear wheel, and transmission gear drives two places rocker arm to reciprocate by transmission connecting rod, ensure that the motion frequency of two places rocker arm is consistent, while realizing driving main wing to carry out fan operation.

This application provides an oscillator and a phase-locked loop (PLL) circuit. The oscillator includes a first LC resonant cavity, a second LC resonant cavity, and an inverting unit. A first input terminal and a second input terminal of a phase detection module are respectively connected to a first terminal and a second terminal of the resonant module. An output terminal outputs a detection signal. A first adjustment module, connected to the first LC resonant cavity, includes a first adjustable capacitor and / or a first adjustable inductor, and controls the values ​​of the first adjustable capacitor and / or the first adjustable inductor according to a received first control signal. A second adjustment module, connected to the second LC resonant cavity, includes a second adjustable capacitor and / or a second adjustable inductor, and controls the values ​​of the second adjustable capacitor and / or the second adjustable inductor according to a received second control signal. The first and second control signals are generated based on the detection signal. This oscillator reduces or eliminates flicker noise introduced by inconsistent resonant frequencies, improving the phase noise performance of the oscillator.

The application relates to the technical field of energy storage, and discloses a power station synchronization method and system. In the application, the power station is an energy storage power station, comprises a first controller and N second controllers in communication connection with the first controller, the N second controllers are connected with N energy storage containers, N is an integer greater than or equal to 2, and the method comprises the following steps: the first controller tests the communication time delay of the N second controllers, and obtains N first time delay values corresponding to the N second controllers one by one; and the first controller respectively sends the synchronization signal of the first controller to each second controller in advance based on the N first time delay values and the synchronization signal of the first controller. Thus, the phase deviation caused by physical distance and line delay is eliminated.

The utility model discloses a kind of dual-path voice simultaneous transmission wireless transceiving systems, including transmitting part and receiving part, the transmitting part includes sequentially connected low-frequency amplification circuit, frequency synthesis oscillation circuit, resonant hybrid circuit and impedance matching transmitting circuit, the receiving part includes sequentially connected signal receiving circuit, frequency modulation circuit, mixing frequency discriminator circuit and power amplifier circuit, the impedance matching transmitting circuit is connected with the signal receiving circuit communication, the low-frequency amplification circuit receives dual-path voice input signal, the power amplifier circuit outputs dual-path voice signal;The utility model is characterized in that: the immediacy of communication is higher.