75results about How to "Reduce bit error rate" patented technology

This invention discloses an underwater acoustic anti-interference transmission method and system based on sparse time-frequency feature mapping. The method includes: at the transmitting end, adaptively generating a fractional-order linear frequency-modulated waveform with a specific time-frequency shear slope based on the Doppler state of the underwater acoustic channel, achieving physical-layer focusing of transmitted energy; at the receiving end, constructing a hybrid observation model containing wide-block sparse channel components and narrow-block sparse burst noise components, and using a dual-channel variational Bayesian algorithm to jointly iteratively infer the posterior probability distribution of environmental burst noise in the fractional-order domain; finally, recovering the original signal through soft-threshold interference cancellation and fractional-order channel equalization. This invention effectively solves the communication failure problem caused by high-dynamic Doppler diffusion and marine biological impulse noise interference in underwater acoustics by actively mapping the waveform and using heterogeneous sparse joint inference at the receiving end, significantly improving transmission reliability in harsh underwater acoustic environments.

The application discloses a four-dimensional 4nQAM constellation shaping method and system, and belongs to the technical field of constellation shaping. The method comprises the following steps: taking a coordinate origin as a square center, according to a preset constellation point priority, expanding a to-be-shaped constellation point in a concentric square from an inner layer to an outer layer in progression to obtain a two-dimensional geometric shaping constellation; mapping the two two-dimensional geometric shaping constellations to a four-dimensional space in a quadrature manner to generate a four-dimensional geometric shaping constellation; initializing and layering the four-dimensional geometric shaping constellation to obtain independent bit streams of layers of the constellation; inputting the independent bit streams into a distribution matcher of a corresponding layer to perform probability distribution matching, and obtaining a constellation symbol index sequence of the layer; layering and mapping the constellation symbol index sequence according to different Hamming weights, and performing quadrant fusion with the four-dimensional geometric shaping constellation to obtain a four-dimensional probability shaping constellation. The application not only realizes flexible construction of a 4n-order constellation, but also can adaptively adjust a constellation structure according to different application requirements.

The invention discloses an OFDM (Orthogonal Frequency Division Multiplexing) communication channel estimation and signal detection method and system, and belongs to the technical field of channel estimation. The OFDM communication channel estimation and signal detection method comprises the following steps: receiving an LDACS downlink OFDM baseband signal; pilot frequency and data subcarriers are separated; arranging pilot frequency observation into a time sequence block according to a frequency index, and constructing a channel estimation subnet input tensor; performing convolution feature extraction and LSTM (Long Short Term Memory) time sequence modeling on the pilot frequency time sequence block in sequence, and outputting channel estimation of each subcarrier; performing frequency domain equalization on the data subcarriers; the signal detection subnet firstly extracts time sequence features through LSTM, then distributes weights through a self-attention mechanism, and finally outputs bit judgment through full connection; performing parameter optimization on the channel estimation subnet and the signal detection subnet by adopting a two-stage training strategy; the number K of subcarriers, the number P of pilots, the CP length and subcarrier mapping are set according to an LDACS frame structure and a protection interval, and an LDACS link layer interface is directly connected. By adopting the OFDM communication channel estimation and signal detection method and system provided by the invention, the problems of poor estimation precision and insufficient robustness of the existing method in a complex LDACS airspace channel environment can be solved.

The application discloses an adaptive tuning device and method of an anti-interference satellite communication antenna, and relates to the technical field of satellite communication, wherein the device comprises a multi-mode reconfigurable surface antenna module, an environment sensing module, a prediction module, a cooperative tuning module and a closed-loop feedback correction module; the application constructs a multi-mode radiation system through the multi-mode reconfigurable surface antenna module and the environment sensing module, obtains an electromagnetic environment and a link state, the prediction module predicts interference and signal deviation based on multi-source data, the cooperative tuning module synchronously executes radiation mode switching and array amplitude and phase pre-tuning according to a prediction result, preset nulls are formed before interference arrives, and the closed-loop feedback correction module collects signal quality in real time and corrects a prediction model and a tuning strategy, so that a prediction type, closed-loop self-optimizing active anti-interference tuning mechanism is formed, interference is not arrived, and tuning is performed in advance, and the anti-interference capability and communication stability under a dynamic complex electromagnetic environment are significantly improved.

The present application relates to a kind of feedforward equalizer circuit using distributed tap, including M distributed tap circuit, input end resistance and output end resistance;Each distributed tap circuit includes N transconductance amplifier, N input signal delay unit and N output signal delay unit;M, N are integer greater than or equal to 2.Input signal VI enters from the input end of the first distributed tap circuit, after passing through the first, the second, …, the Mth distributed tap circuit respectively, is connected to the one end of input end resistance, the other end of input end resistance is grounded;The output signal of each distributed tap circuit is connected together with the one end of output end resistance, and output signal VO is generated;The other end of output end resistance is connected to power supply.A kind of feedforward equalizer circuit using distributed tap proposed in the present application reduces the parasitic capacitance of transconductance amplifier, reduces the degree of signal reflection, and further reduces the bit error rate of received signal.

The utility model discloses a 25G clock data recovery instrument which is composed of a clock extraction circuit and a high-speed signal input interface. The clock extraction circuit can accurately extract a clock signal from a 25G high-speed data signal, and a phase comparator, a voltage-controlled oscillator and a loop filter are utilized to track the phase change of the signal and generate a stable local clock synchronous with the data rate. The problem that a clock is easily interfered in high-speed data transmission is solved, a stable reference is provided for data processing and transmission, and the bit error rate is reduced. The high-speed signal input interface receives 25G data streams and works cooperatively with the clock extraction circuit. The stable local clock ensures that all links are accurately synchronized when data are received and processed, the data are processed according to a correct time sequence, the data processing efficiency is improved, the data integrity is ensured, and the system can meet application scenes such as 5G communication and high-speed network transmission which have high requirements for speed and stability.

This invention discloses a photonic terahertz communication system based on non-uniform probabilistic shaping, belonging to the field of terahertz communication. Specifically, it includes a transmitter and a receiver. The transmitter incorporates non-uniform probabilistic shaping and phase fuzzy encryption techniques, using photonic beat frequency generation to produce a terahertz signal. This signal is then transmitted wirelessly via single-mode fiber to the receiver, where it is mixed with a frequency-multiplied local oscillator signal to achieve down-conversion of the terahertz signal, obtaining an intermediate frequency (IF) signal. The IF signal is then sampled and input to an RX-DSP module for digital signal processing, ultimately obtaining the original data and calculating the bit error rate (BER). This invention improves the system's BER performance and significantly enhances the security of the photonic terahertz communication system.

The invention provides a high-speed interface data sampling circuit and a chip. A phase-locked loop of the high-speed interface data sampling circuit outputs a first clock signal and a second clock signal multiplied by the first clock signal based on a received reference clock signal; the logic processing module carries out multi-stage trigger sampling on the first clock signal according to the second clock signal to obtain a target clock signal, and carries out multi-stage trigger sampling on the received data signal based on the target clock signal, so that the target clock signal is sampled at a specified position of the data signal; the problem of error codes caused by overlarge phase difference between a clock signal and a data signal can be effectively avoided, so that a better sampling effect and a lower error rate can be obtained during high-speed data transmission; meanwhile, the sampling clock and the control clock for parallel-serial conversion can be cooperatively adjusted in phase, so that time sequence deviation in a sampling path and an output path is compensated, and stable and reliable parallel data sampling and serial output of the high-speed interface can still be realized in different rate modes.

The application relates to a typical traffic event detection system based on deep learning and belongs to the field of vehicle-road cooperation and intelligent traffic. The system is sequentially provided with a target detection model module, a time flow motion feature model module and a traffic event detection module; the target detection model module is provided with a multi-branch hollow fusion module for increasing coordinate attention and an overlapping detection frame reservation mechanism module in parallel; the time flow motion feature model module is a Gaussian linear difference time flow model module; and the traffic event detection model module is a multi-dimensional visual feature event detection model module. The application fully utilizes roadside monitoring to obtain real-time traffic video images, optimizes a model to improve the precision of typical traffic events, can effectively improve event detection accuracy, balances detection performance and real-time performance, timely solves road traffic events, improves traffic efficiency and reduces intersection congestion.

The invention relates to the field of oil-gas exploration, in particular to a sound wave communication method and system and a sound wave signal generating and receiving device. The method comprises the following steps: acquiring sending end communication data, and carrying out binary coding on the sending end communication data to obtain sending end code element data; for any sending end code element data, obtaining a sending end pseudo-random code corresponding to the sending end code element data based on a set corresponding relation; and modulating a fundamental wave signal based on the transmitting end pseudo-random code to obtain a communication signal, and transmitting a transmitting end sound wave signal based on the communication signal. According to the sound wave communication method and system, and the sound wave signal generating and receiving device provided by the invention, the technical effects of reducing the bit error rate of the sound wave signal and improving the sound wave communication quality and the communication result accuracy can be realized.

This invention discloses a multidimensional indexed modulation chaotic communication method and apparatus based on neural network-assisted detection, belonging to the field of wireless communication and chaotic spread spectrum communication technology. The method includes: firstly, segmenting the input bitstream to obtain modulation bits, domain index bits, codeword index bits, and reference index bits; then, selecting the corresponding transform domain codebook based on the domain index and the corresponding codeword basis vector based on the codeword index, while simultaneously generating an orthogonal chaotic sequence pool and selecting the corresponding reference chaotic sequence; next, performing MPSK modulation on the modulation bits, and combining the codeword basis vector and the reference chaotic sequence to generate a multidimensional indexed modulation chaotic signal, which is then transmitted through a wireless channel after multi-carrier modulation; the receiving end demodulates, filters, and samples the received signal, and inputs it into a multi-task convolutional neural network detector to achieve joint detection of modulation symbols, domain index, codeword index, and reference index, thereby recovering the transmitted bitstream.

The application discloses a CNN-LSTM-based phase calibration method for mode division multiplexing optical fiber communication and belongs to the technical field of optical fiber communication. By constructing a double-input CNN-LSTM hybrid neural network architecture, MIMO input signals and original target signals of mode division multiplexing optical fiber communication are acquired, data preprocessing is carried out, the spatial feature extraction capability of a convolutional neural network and the time series modeling capability of a long short-term memory network are combined, effective compensation of phase noise in long-distance strong coupling mode division multiplexing optical fiber communication is realized, complex MIMO signals are separated into real and imaginary parts and sliding window training samples are generated, and a double-branch network containing an image input layer, a convolutional layer, an LSTM layer, a deep connection layer and a self-defined phase calibration layer is constructed. The problems that the phase noise compensation capability of a traditional algorithm is limited and the convergence performance is poor under a strong coupling condition are effectively solved, and the equalization performance and transmission quality of a mode division multiplexing optical fiber communication system are significantly improved.

This invention relates to a signal detection method for communication systems based on a temporal convolutional network. The method includes the following steps: detecting the received signal of the communication system; inputting a trained signal recovery model to obtain the recovered transmitted signal. The signal recovery model is constructed based on a temporal convolutional network. The training process of the signal recovery model includes the following steps: acquiring a dataset of the received and transmitted signals of the communication system; preprocessing the dataset and dividing it into a training set, a validation set, and a test set, using the received signal as input and the transmitted signal as a label; training and validating the temporal convolutional network based on the training and validation sets; and testing the trained and validated temporal convolutional network based on the test set to obtain the signal recovery model. The signal recovery model includes non-causal convolutional layers, non-causal dilated convolutional layers, and residual modules. Compared with existing technologies, this invention has advantages such as low bit error rate and high signal detection reliability.

This invention belongs to the field of satellite navigation and communication technology, specifically relating to a method, program, device, and storage medium for optimizing satellite communication windows based on satellite navigation signal carrier-to-noise ratio (SNR) information in dynamic environments. For communication satellites with communication and navigation payloads on the same platform, this invention directly predicts the SNR time series. For communication satellites with communication and navigation payloads on different platforms, it uses known historical SNR and position information of the navigation satellite to calculate the motion state of the communication positioning terminal antenna, thereby indirectly predicting the future SNR sequence of communication satellites with unknown historical SNR. Based on the directly or indirectly predicted communication satellite SNR sequence, a suitable communication window for the communication satellite is found, reducing the bit error rate under adverse channel conditions. This invention achieves the prediction of SNR changes for satellites with unknown historical SNR.

The application discloses a HDMI signal receiving method of self-adaptive sampling window and indirect line field recovery, and relates to the technical field of digital video interface. The method performs sampling alignment processing based on an IDELAY delay unit and an ISERDES serial-parallel conversion unit in an FPGA chip, detects continuous control characters to demarcate an effective sampling window and lock the midpoint as a sampling point, and completes bit alignment and word alignment through automatic traversal of delay gears and bit sequence adjustment. Then, for three-way data of completed channel synchronization, a stable data valid signal de is generated by judging non-control characters for M clock periods, and a line field synchronization signal is indirectly calculated based on the de signal and standard timing parameters. The application does not need an external physical layer decoding chip, has low cost, can adaptively offset the phase, effectively filters signal burrs, and improves the anti-interference ability of line field synchronization.

The invention belongs to the technical field of electronic circuit design, and discloses a differential signal Fanout structure for improving the integrity of a high-speed signal, and the structure comprises a PCB substrate; the differential signal pair is arranged on the PCB substrate, the differential signal pair comprises a P signal wire and an N signal wire, and the P signal wire and the N signal wire are respectively used for connecting chip pins; and a ground shield unit. By adopting layered fan-out and large-spacing decoupling design, crosstalk of high-speed differential signals is remarkably reduced, the limitation that tight coupling wiring must be conducted on the same layer in a traditional Fanout structure is broken through, P signals and N signals are arranged on the surface layer and the inner layer of a PCB respectively, and therefore the signal transmission efficiency is improved. By means of isolation of a vertical space, maximization of horizontal projection spacing is achieved (a decoupling spacing area is formed), inter-line coupling capacitance is remarkably reduced, far-end crosstalk is remarkably reduced through the structure, and the signal-to-noise ratio and eye pattern opening of a high-speed link are improved.

Embodiments of the present application provide a channel training method and program product, the method comprising: in response to a first update instruction and first equalizer state information sent by a first device, receiving end adaptive equalization is carried out on equalization coefficient through a software interface; according to the receiving end adaptive equalization result, the second update instruction and the second equalizer state information are sent to the first device, so that the first device modifies the specified equalization coefficient, receives the third equalizer state information and the third update instruction sent by the first device after updating; in response to the third equalizer state information and the third update instruction, hardware adaptation is carried out on the receiving end equalization coefficient, and the fourth equalizer state information is sent to the first device according to the hardware adaptation result, wherein the fourth equalizer state information is used to indicate that the channel composed of the first device and the second device is trained. The problem that only hardware automatic training is used for channel training in the related art leads to unstable channel training and long time consumption.

The application discloses a kind of LDPC multi-bit quantization hardware decoding method suitable for high-speed communication, it is related to the field of communication physical layer digital signal transmission, including the steps 1) reset decoding module, from channel obtains the information sequence to be decoded and carries out suitable bit quantization extension;2) to meet the engineering demand of super high speed, low resource consumption, low latency, the application adopts a kind of full parallel decoding structure, the full parallel decoding structure can realize all check nodes update simultaneously and provide to all variable nodes.3) check node update is carried out by 6 parallel ways, the normalization factor used in the application check node update is obtained by adaptive mode;4) the check node information obtained in step 3 is as the input of variable node update module, variable node update is carried out by 6 parallel ways, the input in the application variable node update module is improved by expanding the number of bit quantization to improve the decoding ability of decoder.

A TFDM-PON system correction method and device, including OLT receiving ONU based on time division multiplexing or time-frequency division multiplexing sends double polarization signal, it includes target signal sequence corresponding with X / Y polarization, and target signal sequence is IQ period complex signal and its I road and Q road are single tone signal of first frequency and second frequency respectively;Based on the Fourier transform of double polarization signal and frequency domain symmetry, calculate target parameters including target transceiver frequency offset, target transmitting terminal, receiving terminal IQ delay and target power deviation between each ONU, make ONU correct frequency, delay and power according to target parameters, eliminate subcarrier crosstalk caused by frequency offset in TFDM uplink burst transmission, image crosstalk caused by IQ imbalance and performance degradation caused by subcarrier power imbalance, reduce bit error rate, improve system robustness.

The application provides a polar code encoding method and device, an electronic device and a storage medium. The polar code encoding method comprises the following steps: obtaining information data bits; encoding the information data bits according to an information bit set to obtain coded bits, wherein the information bit set comprises bits that can carry information in bits corresponding to a plurality of sub-channels of a polar code; and puncturing the coded bits according to a puncturing bit set, wherein the puncturing bit set comprises bits that can be punctured in bits corresponding to the plurality of sub-channels; wherein the information bit set and the puncturing bit set are determined according to LLR values of the plurality of sub-channels, and the information bit set and the puncturing bit set are mutually exclusive. In this way, the application can guarantee the encoding and decoding performance of the coded bits after puncturing.

The invention relates to a low-delay mouse response method and device based on a Polar code. The method comprises the steps that mouse dynamic data and channel state information are obtained in real time; quantifying and compressing the dynamic data, and packaging the dynamic data into a minimum reporting unit; aligning each minimum reporting unit with the initial boundary of the SLB air interface wireless transmission time slot; carrying out channel coding on each minimum reporting unit which is aligned by the Polar encoder; dynamically adjusting a code rate, a code length, a cyclic redundancy check bit number or a frozen bitmap of the Polar code based on a signal-to-noise ratio in the channel state information; on the basis of phase frequency double-loop locking, a refreshing time sequence of a display end is aligned with a transmission time sequence of an SLB air interface; calculating a safety time window of the scheduling deadline; and based on the safety time window, realizing synchronization of wireless mouse data and display updating through graphic interface or hardware acceleration rendering. According to the invention, through dynamic adjustment of the Polar code and in combination with display synchronization, the adaptability can be improved while the delay of the mouse is reduced.

The invention relates to the technical field of vehicles, in particular to a vehicle safety certification and control system, a vehicle and a control method.The vehicle safety certification and control system comprises a multi-mode biological characteristic quantization processing module which is used for obtaining at least one biological characteristic of a user and conducting coding fusion on the biological characteristics in a hardware operation environment to generate a quantum-state identity label; the dynamic key management and vehicle control module is used for completing identity authentication according to the quantum state identity credential, generating an encryption key of a vehicle control instruction according to the traffic situation information if the identity authentication is successful, and outputting the vehicle control instruction after safely packaging the vehicle control instruction by using the encryption key in response to user operation or a preset event, and the vehicle is controlled to execute corresponding operation. Therefore, the problems that in the related technology, biological characteristic transmission of a vehicle-mounted safety system is prone to being stolen, secret key management is static and rigid and cannot respond to road conditions in real time, and quantum hardware is difficult to stably work in the vehicle-mounted vibration and high-temperature environment are solved.

The application relates to a carrier information modulation and demodulation method of a controllable resonant magnetic pulse through-the-earth communication transmitter, and the method comprises the following steps: generating a magnetic pulse signal through a hardware topology of a magnetic pulse signal transmitter, wherein the hardware topology comprises a switch, a unidirectional conducting switch, a resonant capacitor and a solenoid; dividing the working period of an LC resonant system into four stages by controlling the conduction and shutdown of the switch and the unidirectional conducting switch; generating a non-continuous magnetic resonant signal pulse by dynamically adjusting the duration of each stage; designing an information modulation mechanism based on orthogonal code elements, generating the waveforms of code element 0 and code element 1, and ensuring the orthogonality by verifying the autocorrelation and cross-correlation; and realizing information demodulation at a receiving end by calculating the cross-correlation between the input non-continuous magnetic resonant signal and code element 0 and code element 1. The application solves the contradiction between radiation efficiency and signal bandwidth which cannot be considered in the existing through-the-earth system and modulation and demodulation method.

The present disclosure relates to a method for MIMO transmission, wherein the method is performed by a terminal, and the method comprises: acquiring a residual transmission power and an uplink transmission quality of the terminal; and performing MIMO transmission in a transmission state determined from multiple candidate transmission states of the terminal according to the residual transmission power and the uplink transmission quality, wherein the multiple candidate transmission states include multiple transmission states with different uplink coverage capabilities. In the present disclosure, the uplink coverage capability of the terminal can be adjusted in time, the error rate of transmission can be reduced, and the transmission quality of MIMO transmission can be improved.

This invention discloses an underwater acoustic modem based on STM32 and Raspberry Pi, belonging to the field of underwater acoustic communication technology. Compared with previous modems, this invention improves upon the shortcomings of DSP-based modems, which are characterized by high cost, difficult development, and relatively poor system compatibility; and software-defined radio architecture modems, which are characterized by high hardware cost, high power consumption, and unsuitability for deployment in underwater communication networks. Furthermore, most existing modems cannot simultaneously guarantee communication distance and low bit error rate. This invention utilizes a low-power, low-cost STM32 chip and Raspberry Pi as the core board for modem development. With Raspberry Pi as the software core, it offers faster speed, larger memory, and easier development and expansion. The device size is reduced through a self-designed MCU, meeting the requirements of underwater network nodes. It also employs an adaptive autocorrelation threshold algorithm, enabling the demodulator to adapt to various underwater environments during frame synchronization, while achieving longer communication distances and lower bit error rates.

This invention provides a demodulation method and system for free-space optical communication links based on helical fractional orbital angular momentum. N data streams are loaded onto a Gaussian beam, and at least one modulated beam of helical fractional OAM (Optical Aspect-Oriented Motion) is generated through a spatial optical phase modulation module. After coaxial beam combining, the beam is emitted in free space and imaged onto the demodulation phase modulation module plane via an optical relay imaging system. A conjugate helical phase map is loaded to demodulate the target OAM, and the focusing optics module is adjusted to couple the peak of the target OAM beam into a single-mode fiber, while non-target OAM beams are isolated. After verifying the demodulation isolation, the demodulation phase map is switched to sequentially recover each data stream. This invention achieves hybrid multiplexing of helical fractional and integer OAM, and achieves a mode isolation of ≥5dB through a dual isolation mechanism of phase conjugate demodulation and spatial optimal focusing. This improves fiber coupling efficiency and communication link robustness, significantly expanding the channel capacity and spectral efficiency of free-space optical communication.

The invention discloses a stepped convolutional code (HSCBCC) coding and decoding method and device for high-speed large-bandwidth data transmission, and belongs to the technical field of communication channel coding. According to the coding method, a frame of data is divided into a plurality of groups of sub-data, a convolutional code coder is adopted to code a combined sequence of current sub-data and previous specific sub-data and a previous specific check sequence subjected to interleaving processing, and a current check sequence is generated; respectively retaining the current sub-data and the verification sequence to different subsequent moments as input; the decoding method comprises the following steps: iteratively processing channel information and extrinsic information of the corresponding sub-data and the check sequence, and outputting a decoding result. According to the invention, an asymmetric double-coupling structure is adopted, the bit error rate performance is superior to that of an existing space coupling coding scheme under the same resource consumption, and the method is adaptive to a multi-code-rate scene and is suitable for the technical field of large-bandwidth wireless communication or optical fiber communication.

This invention discloses a high-density ferroelectric memory, its fabrication method, and its applications, belonging to the field of semiconductor memories. The memory consists of an array of multiple memory cells connected on both sides by substantially orthogonal word lines and bit lines. The memory cell of this invention employs a stacked structure of a top electrode, a resistive switching dielectric layer, an intermediate metal layer, a ferroelectric dielectric layer, and a bottom electrode, electrically equivalent to a ferroelectric capacitor connected in series with a resistive switching selector. By adjusting the RC delay of the memory cell, the voltage drop across the ferroelectric capacitor in the unselected cell is reduced, thus reducing its disturbance. Furthermore, the ferroelectric capacitor has a stable capacitance value, which can be effectively reduced by RC regulation to mitigate the impact of disturbance voltage. In summary, this invention increases the memory's storage window and reduces the bit error rate without increasing additional area overhead.

The invention discloses an underwater wireless optical communication signal detection method based on a multi-type detector array, and belongs to the technical field of underwater wireless optical communication and signal detection. The method comprises the following steps that: a receiving end receives optical signals by adopting a multi-type detector array comprising high-gain and low-gain photoelectric detectors, and converts the optical signals into M paths of electric signals; after up-sampling is carried out on each path of signals, weighted combination is carried out on M paths of signals by traversing weighting factors; calculating a projection vector, a judgment threshold and a pilot frequency bit error rate for each group of weighting factors, and solving an optimal weighting factor and a corresponding optimal projection vector by taking the minimum bit error rate as a criterion; and projecting the data symbol sampling point vector by using the optimal projection vector, and recovering 0 and 1 symbols in combination with the optimal judgment threshold. According to the invention, the detection advantages of multiple types of detectors are fused, the underwater large dynamic light intensity change can be adaptively coped, and the signal detection performance and the system reliability are significantly improved.

The utility model discloses an equal power division network feed differential antenna array, and relates to the technical field of microwaves and radio frequency. Comprising a feed network and a radiating antenna part, the feed network is of a three-layer structure, the middle layer is a slotted copper metal ground, the top layer and the bottom layer are of power division structures symmetrical about the middle layer, and an FR-4 dielectric substrate is arranged between the top layer and the bottom layer; the power division structure is composed of a transmission line and two stages of Wilkinson power dividers, and the radiation antenna part is composed of four dual-band quasi-yagi antennas with through holes and is connected with the power division structure through the through holes. The antenna array is uniform in power distribution, high in anti-interference performance, wide in working frequency band, reliable in connection, stable in performance and reasonable in size.