126 results about "Narrow bandwidth" patented technology

The technology described herein is directed towards modular metasurfaces arranged with unit cells for narrowband, wideband and / or multiband sound absorption, in which the unit cells are based on Helmholtz resonators that are deployed in a server rack, proximate to a server, without substantially obstructing airflow from the server fan(s). Each sound absorbing unit-cells is designed and constructed based on a specific resonance frequency, and includes a neck portion and air chamber dimensioned to resonate at the desired resonance frequency and thereby inverse phase cancel corresponding narrowband frequencies of incoming sound waves. Differently-dimensioned unit cells can be built into a single metasurface module, thereby facilitating wideband and / or multiband sound absorption with that metasurface. The modular metasurfaces can be attached to the sidewalls of a server rack, or positioned in otherwise empty slots above and below a server, optionally coupled to blanking panels for covering the openings of those slots.

The invention relates to the technical field of video compression, in particular to a narrow-bandwidth-based video monitoring data transmission and storage method, which comprises the following steps of: for an input video monitoring data frame, calculating a difference absolute value sum between a current frame and a reference frame; according to the method, the pixel difference of the current frame and the reference frame is calculated, and the average amplitude of the motion vector field is fused to form a comprehensive index of the dynamic degree of the quantized content, so that the image group structure is not fixed or periodic any more, and the dynamic degree of the quantized content can be calculated according to the score of scene activity and the change intensity. When a monitoring picture is static, a super-long image group is established to limit a compression code rate, when the picture is suddenly changed, the super-long image group is quickly switched to a short image group to ensure instant refreshing and definition of key information, meanwhile, non-uniform redistribution is performed on limited total code rate budget, bit resources can be intelligently inclined to frames with violent content change and large information amount, and the real-time refreshing and definition of the key information are ensured. Therefore, the subjective visual quality of the key dynamic moments is improved under the narrow bandwidth.

The invention discloses a generating device capable of generating an ultra-flat broadband micro comb. The generating device comprises a pump pulse generating module, a micro comb generating module and a micro comb generating module, the pumping pulse compression module is connected with the pumping pulse generation module; the high-Q-value microcavity module is connected with the pumping pulse compression module; and the micro comb detection and feedback module is respectively connected with the high-Q-value micro-cavity module and the pump pulse generation module, and is used for monitoring the output spectrum and power change of the high-Q-value micro-cavity module and adjusting the output wavelength of the picosecond pulse light according to the output spectrum and power change so as to stabilize the ultra-flat broadband micro comb. By arranging the high-Q-value micro-cavity, the spectral bandwidth of the micro-comb can be effectively expanded, and the ultra-flat broadband micro-comb is output; meanwhile, the defects that the hyperbolic secant single soliton micro-comb is poor in flatness and narrow in bandwidth are overcome, and the micro-comb has obvious advantages in the application field with high requirements for the flatness and the spectral bandwidth at the same time.

The invention discloses a narrowband-broadband intelligent switching method of a radar, and belongs to the field of radar signal processing. Single radar wide-narrow band function integration is achieved through resource multiplexing, self-adaptive triggering and dynamic parameter configuration, detection tracking in a default narrow band mode is achieved, switching is triggered based on manual instructions and double thresholds, hardware such as a common antenna and a T / R assembly is reconstructed through time division multiplexing and software parameters, the signal synchronization time is shortened, and the target tracking response delay time is shortened; double-radar collaborative design is not needed, and the design workload is reduced. According to the invention, double radars are combined into a single radar, the hardware cost is greatly reduced, and the method is suitable for unmanned aerial vehicle-mounted, vehicle-mounted and other space-limited scenes and military reconnaissance, civil security and protection and other tasks.

The invention relates to the field of microelectronic devices, in particular to a bulk acoustic wave resonator with a double-layer piezoelectric film structure, a preparation method and a filter, the bulk acoustic wave resonator comprises a cap wafer, and a dry film, a passivation layer, a silicon oxide layer, a high-resistance silicon wafer and RDL metal are sequentially arranged on the cap wafer; the dry film and the cap wafer form a dry film cavity, the passivation layer located above the dry film cavity extends into the dry film cavity, and a top electrode, a first piezoelectric film, a middle electrode, a second piezoelectric film and a bottom electrode are sequentially arranged on the passivation layer; the top electrode and the bottom electrode are used as first ports of the resonator; and the middle electrode is a second port. According to the resonator, the excitation mode of the resonator is changed through cooperation of the two layers of piezoelectric films with the same polarization direction and the intermediate electrode, a high-order resonance mode is jointly excited, meanwhile, a high electromechanical coupling coefficient is kept, and a wide fractional bandwidth is achieved at high frequency through the relatively thick piezoelectric films; the problems that a high-frequency resonator is weak in power bearing capacity, narrow in bandwidth, low in quality factor and poor in stability are solved.

The application discloses a terahertz biological tissue imaging system and method based on a metasurface antenna. The terahertz biological tissue imaging system comprises a terahertz signal generator, an intelligent system control device, a terahertz signal transmitter and a data acquisition module. The terahertz signal generator is used for generating an ultra-wideband terahertz wave signal. The intelligent system control device controls the terahertz signal generator to continuously generate the ultra-wideband terahertz wave signal. The terahertz signal transmitter is used for transmitting the ultra-wideband terahertz wave signal after programmable modulation to a biological tissue organ. The terahertz signal receiver is used for receiving terahertz biological signals scattered inside and around the biological tissue organ, and modulating the received terahertz biological signals. The data acquisition module is used for acquiring the terahertz biological signals. The intelligent sensing signal processing module is used for processing the terahertz biological signals to obtain a terahertz image of the biological tissue organ. The application solves the problems of narrow bandwidth and low gain in the corresponding technology.

The invention discloses an angle-adjustable narrow-band heat radiator based on corner hyperbolic phonon polaritons. The heat radiator sequentially comprises a metal layer, a natural biaxial hyperbolic medium, a vacuum / air spacing layer and a one-dimensional medium grating. According to the angle-adjustable heat radiator, the biaxial hyperbolic medium and the gold layer are twisted as a whole, and the included angle between the radiating surface and the plane where the crystal axis of the natural biaxial hyperbolic medium is located is changed, so that the heat radiation direction is changed. The radiator can be produced on a large scale at low cost by utilizing processes such as nano photoetching and deposition. The narrow-band directional thermal radiation device obtained through the nano manufacturing technology is stable and reliable in performance, can generate thermal radiation with narrow bandwidth and small radiation angle, has the characteristics of adjustable direction, flexibility, convenience and the like, and is expected to be applied to the fields of directional heat dissipation, thermal camouflage and the like.

The utility model relates to a dual-channel optical filter based on a three-rectangular cavity edge coupling waveguide. The dual-channel optical filter comprises a silicon substrate, a sapphire layer, a graphene nano-strip waveguide, a first graphene rectangular resonant cavity, a second graphene rectangular resonant cavity and a third graphene rectangular resonant cavity, the sapphire layer is arranged above the silicon substrate; a graphene nano-strip waveguide, a first graphene rectangular resonant cavity, a second graphene rectangular resonant cavity and a third graphene rectangular resonant cavity are arranged on the upper surface of the sapphire layer; the first graphene rectangular resonant cavity and the third graphene rectangular resonant cavity are connected in series and arranged on one side of the graphene nano-strip waveguide, and the second graphene rectangular resonant cavity is arranged on the other side of the graphene nano-strip waveguide. According to the utility model, the problems of narrow bandwidth and poor filtering effect of an optical filter with a graphene structure are solved; the dual-channel optical filter which is small in size, wide in bandwidth, excellent in filtering effect, dynamically tunable and easy to integrate is realized in an infrared band.

The invention belongs to the technical field of communication, and particularly relates to a resource data sensing method and device and communication equipment, and the resource data sensing method comprises the steps that a sensing node collects multi-dimensional environment parameters and generates environment feature vectors, and a current interference type is recognized based on an interference classification model; according to the identified interference type, selecting an anti-interference algorithm combination corresponding to the first order from an anti-interference strategy library; adjusting a sensing parameter based on a dynamic parameter in the environment feature vector, and collecting and preprocessing target resource data to obtain noise-reduced resource data; evaluating the confidence coefficient of the denoised resource data, and if the confidence coefficient reaches the standard, outputting the resource data; if the confidence degree does not reach the standard, strategy iteration is triggered until resource data with the confidence degree reaching the standard are output, the method can adapt to diversified interference of narrow bands, wide bands and the like, matching of interference types and anti-interference strategies is achieved, interference is restrained to the maximum extent, the data distortion rate in the complex environment is reduced, and high-reliability data support is provided for resource scheduling.

The application discloses a microwave photon frequency hopping signal generation device and method based on an optical switch and belongs to the technical field of optical communication. The application is composed of a light source, a beam splitter, an optical frequency comb generator, an electro-optical frequency shifter, an acousto-optic modulator, a digital frequency synthesizer, a filter array, a signal control unit, an electrically controlled high-speed optical switch, a beam combiner and a photoelectric detector. The application separates optical frequency comb teeth by using an ultra-narrow bandwidth optical filter, selects and opens the frequency hopping signal generated by the local light beat frequency through the optical switch, and can generate a high-speed high-order high-stability frequency hopping signal compared with the prior art.

A user equipment comprising: means for detecting one or more synchronisation signals on a synchronisation raster point of a first synchronisation raster and when a synchronisation signal is not detected, searching for one or more synchronisation signals on another synchronisation raster point of the first synchronisation raster, the first synchronisation raster being associated with a first synchronisation signal and physical broadcast channel configuration having a relatively narrow bandwidth compared to a second synchronisation signal and physical broadcast channel configuration which is associated with a second different synchronization raster, one or more synchronisation signals of the first synchronisation signal and physical broadcast channel configuration being associated with a first sequence length and one or more synchronisation signals of the second synchronisation signal and physical broadcast channel configuration being associated with a second different sequence length; means for detecting one or more master information blocks of a first physical broadcast channel associated with the one or more synchronisation signals, when the one or more synchronisation signals are detected; and means for performing an initial access of a cell associated with the first physical broadcast channel.

This invention discloses a method for encrypted transmission of IoT sensor data for NB-IoT, relating to the fields of IoT communication and information security technology. The invention constructs an association mapping relationship between wireless channel coverage enhancement level, transport block size index, transport block bit length, and number of repeated transmissions, and matches the optimal transport block configuration by combining transmission resource overhead budget. Based on channel state and transmission capacity, it performs adaptive encryption and data compression processing, generates implicit random numbers, and completes data encapsulation. Stable transmission of the encapsulated data is achieved through the narrow bandwidth channel of NB-IoT, and consistency verification is performed at the receiving end. This effectively solves the problems of poor adaptability and high transmission overhead of traditional encryption schemes, improving the security, efficiency, and reliability of IoT sensor data transmission.

The invention discloses a quantum key distribution system and method capable of tolerating a high-noise link, and the method comprises the steps: carrying out the specific ultra-narrow bandwidth configuration in a transmitting terminal and a receiving terminal of QKD equipment at the same time; in this way, the capability of tolerating a high-noise link can be provided for a QKD system especially under the scene that classic optical communication equipment and QKD equipment have a small wavelength interval of 25GHz or an integral multiple of 25GHz, and the power of a classic optical signal does not need to be lowered or the classic optical signal and a quantum optical signal do not need to be configured on two wavebands with a large interval to reduce noise. The power and the wavelength of classical optical communication equipment do not need to be limited too much, practical engineering application can be greatly facilitated, the quantum optical signals and the classical optical signals can achieve small link attenuation at the same time, and the method is suitable for long-distance scenes.

The invention discloses a polarization imaging system and a configuration method thereof, and the system comprises a first light source which is used for providing wide-bandwidth illumination, a polarization camera which is used for imaging a target object under the illumination of the first light source, and a processing model which is used for determining a polarization information image according to the imaging information outputted by the polarization camera. The configuration method comprises the steps that first polarization information and second polarization information are obtained, the first polarization information is obtained by imaging a target object through a polarization imaging system, the second polarization information corresponds to polarization information of the same target object under narrow-bandwidth illumination, and the first polarization information and the second polarization information are obtained based on the first polarization information and the second polarization information; and determining a loss value, and updating the configuration of the processing model based on the loss value. According to the configuration method provided by the invention, the system can consider the advantages of cost, power consumption and packaging size, and has the functions of achromatism and reduction of polarization information loss.

The invention discloses a double-filtering circular polarization phased-array antenna unit and array, and belongs to the technical field of phased-array antennas. The dual-filtering circularly polarized phased-array antenna unit comprises a parasitic patch layer, a first dielectric substrate layer, a coupled feed layer, a semi-cured layer, a second dielectric substrate layer, a strip-shaped feeder line layer and a third dielectric substrate layer which are sequentially arranged from top to bottom, the strip-shaped feeder line layer comprises a feed strip-shaped line and a filtering branch knot located on the feed strip-shaped line. The parasitic patch layer comprises a central patch and a zero-order filtering resonator located on the periphery of the central patch. According to the invention, the limitation of narrow bandwidth of the existing antenna is solved, and the antenna is low in cost, low in profile and high in efficiency.

The application discloses an equal-wavenumber division waveband noise reduction method for an infrared Fourier transform spectrometer, and is applied to fine spectral detection with wide spectral range and ultrahigh resolution. When designing a low-temperature infrared Fourier transform spectrometer, a low-temperature filter wheel is arranged in an optical path in front of a detector, and the low-temperature filter wheel is driven by a low-temperature motor. A plurality of filters are arranged on the filter wheel, the central wavelengths of the filters are different, the central wavelength intervals are different, the central wavelengths and the bandwidths of the filters are designed according to equal central spectral intervals, each filter has a narrow bandwidth, and according to a spectral range of a required detection target, a corresponding filter is selected to realize spectral detection with ultrahigh spectral resolution of a concerned spectral range. For the infrared Fourier transform spectrometer with high spectral resolution and wide spectral bandwidth, the measurement brings the advantage of reducing noise caused by out-of-band photons on the detector, and low temperature of the filter reduces infrared background and photon noise caused by the filter body.

The application discloses a full-band super-high power density electromagnetic pulse protection energy selection surface and a communication device. The energy selection surface comprises a first dielectric substrate and a second dielectric substrate which are sequentially stacked. The first dielectric substrate and the second dielectric substrate are separated by an air gap layer. The top of the first dielectric substrate is provided with a first metal unit, and the bottom of the second dielectric substrate is provided with a second metal unit. The first metal unit and the second metal unit are both center-symmetric structures. The application realizes adjustable functions, can switch between transmission and shielding states, breaks the limitation of the single function of the frequency selection surface and the limitation of the narrow bandwidth of other energy selection surfaces.

The application provides a bandwidth high-power voltage-controlled oscillator circuit, which works in cooperation with a frequency selection unit, an oscillation unit and an amplification unit: the frequency selection unit is connected with an input unit, can control an output frequency according to an input voltage, and solves the problem of narrow bandwidth of a high-power scheme; the oscillation unit forms a feedback loop with a field effect tube and a feedback network, receives a frequency selection unit signal and generates a first signal, and guarantees stable generation of an oscillation signal; the power tube gate of the amplification unit is connected with the field effect tube, the drain is connected with an output unit, the first signal is amplified into a high-power second signal, and the power defect of a low-power scheme is compensated. Meanwhile, the structure of direct correlation of each unit reduces unnecessary intermediate links, reduces the number of components, reduces heat generation and signal loss, and improves the stability of the circuit.

The application discloses an improved trapezoidal line slow wave structure and a traveling wave tube. The slow wave structure comprises a straight waveguide section, the straight waveguide section comprises a first coupling groove, a second coupling groove and an electron beam channel located in the middle of the first coupling groove and the second coupling groove along the direction of the central axis of the straight waveguide section; the width of the first coupling groove and the second coupling groove alternately changes on two adjacent metal plates of the slow wave structure, the transmission path of electromagnetic waves in the slow wave structure is prolonged, the phase velocity of electromagnetic waves in the slow wave structure is reduced, and then the bandwidth is extended. The traveling wave tube comprises the improved trapezoidal line slow wave structure. The application has the advantages of easy processing, good heat dissipation, wider bandwidth, higher coupling impedance and lower ohmic loss in the terahertz wave band, and solves the problems of narrow bandwidth, lower coupling impedance and larger loss of the traditional trapezoidal line slow wave structure.

The invention provides an encodable liquid crystal image processor, a preparation method and a broadband parallel imaging device. The encodable liquid crystal image processor comprises a first substrate, a second substrate and a cholesteric liquid crystal layer which are oppositely arranged, one side of the first substrate is provided with a first orientation layer, and one side of the second substrate is provided with a second orientation layer; the first orientation layer and the second orientation layer comprise control patterns, and the control patterns enable liquid crystal directors to meet orientation angle distribution so as to guide liquid crystal distribution in the cholesteric liquid crystal layer; in a wave band covered by a chiral photonic band gap of the cholesteric liquid crystal layer, space parallel image processing with multiple functions is realized at the same time. According to the invention, a multi-task image processing function, such as edge detection and corner detection, is integrated on a single element, and spatial parallel output is realized in a visible light wave band by utilizing the broadband geometric phase modulation characteristic of cholesteric liquid crystal, so that the limitations of single function and narrow bandwidth of an existing image processing device are effectively improved.

The application discloses a compact full-metal multi-beam single-pulse antenna, and belongs to the technical field of antennas.The application solves the problems of narrow bandwidth, low feed efficiency and small mechanical strength of a one-dimensional multi-beam single-pulse antenna.The technical points of the application are as follows: the compact full-metal multi-beam single-pulse antenna is composed of a sum-difference comparator based on a half-height slot gap waveguide and a planar dragon's breath lens composed of sliding symmetrical pins.The sum-difference comparator comprises two feed ports, two sections of slot gap waveguides with different widths and a matching pin.The application is suitable for a large-view-field multi-beam single-pulse radar system.

The invention discloses a wireless communication device and a communication method. The wireless communication device comprises a controller; the M narrow bandwidth frequency hopping wireless interfaces are connected with the controller, and M is an integer greater than 1; the controller is configured to establish N wireless links with an external device through the M narrow bandwidth frequency hopping wireless interfaces, where N is an integer greater than 1 and not greater than M; acquiring communication quality information of each wireless channel in each wireless link; and dynamically adjusting transmission parameters of the at least one narrow bandwidth frequency hopping wireless interface based on the communication quality information of each wireless channel. Based on the technical scheme, the communication transmission efficiency can be improved on the basis of the stability of communication transmission.

This invention discloses an electromagnetic lens based on a broadband tightly coupled structure and its dual-frequency dual-polarized lens antenna, belonging to the field of mobile communication. It includes an electromagnetic lens array and a dual-frequency dual-polarized feed antenna placed at the focal point of the lens array. The electromagnetic lens is positioned above the feed of the dual-frequency dual-polarized antenna. The broadband tightly coupled unit consists of two dipoles, two pairs of delay lines, a metal pillar, two metasurface matching layers, and a reflector; the overall structure is mirror-symmetrical about the reflector. This invention controls the phase of the control unit by adjusting the length of the phase delay lines of the broadband tightly coupled unit, performing phase compensation at different positions on the lens array, thereby realizing the design of the electromagnetic lens. This invention effectively avoids the narrow bandwidth defect of traditional dual-frequency metasurface lenses, achieving excellent dual-polarization and high-gain performance in both target frequency bands.

This application discloses a method and system for tracking spread spectrum signals, belonging to the field of signal processing. This application generates a spread spectrum digital signal by oversampling the acquired spread spectrum modulated signal. In-phase and quadrature components are generated by mixing, despreading, and coherent integration of this digital signal. Frequency and phase error information are calculated based on the components at continuous time intervals to correct the local carrier. The corrected local carrier is then used to mix the signal to baseband. An adjustable fractional delay is applied, and the instantaneous correlation energy peak is searched to determine the target fractional delay, thereby obtaining code phase error information. After correcting the local pseudocode using this code phase error information, the corrected local carrier and local pseudocode are used to initialize a narrow-bandwidth frequency-locked loop, phase-locked loop, and delay-locked loop, thus initiating precise tracking. This enables high-precision and stable locking of the spread spectrum signal in a short time.

The application belongs to the technical field of ground penetrating radar, and provides a ground penetrating radar control method, device, equipment and storage medium, wherein the method comprises: generating a frequency sequence group matrix meeting preset requirements of a ground penetrating radar by using a chaotic mapping, optimizing the frequency sequence group matrix according to a preset genetic algorithm, obtaining an orthogonal discrete frequency coding transmission waveform set, based on the orthogonal discrete frequency coding transmission waveform set, calling a double-channel narrowband, wideband transceiver and a heterogeneous system-level chip of the ground penetrating radar to transmit a waveform to the ground and receive a reflected waveform, analyzing and processing the reflected waveform, obtaining a ground penetrating result, so as to improve work efficiency, meet high-speed operation detection requirements, improve detection accuracy of the radar, have a unique advantage for spectrum analysis and interference suppression, realize a balance between detection depth and resolution, and do not need complex signal processing technology.

This invention discloses a multi-mode control method for a IIOS-type photovoltaic DC system based on frequency conversion and phase shifting, belonging to the field of new energy power generation. The system includes multiple photovoltaic strings and corresponding LC series resonant converters. The converter outputs are connected in series to form a medium-voltage DC bus, and each converter is equipped with an independent controller. The control method is executed autonomously by each module without cross-module communication. The core is to collect local data and switch between four modes—maximum power point tracking, constant voltage, constant power, and constant gain—with hysteresis. A hybrid frequency conversion and phase shifting modulation technique is used to adjust the operating frequency fs and the phase shifting ratio D in two dimensions, ensuring that fs ≥ fr under all operating conditions to achieve zero-voltage switching. This invention overcomes the gain adjustment limitations under narrow bandwidth constraints, achieves autonomous power allocation, improves operational reliability and transmission efficiency under photovoltaic power mismatch conditions, and reduces system complexity through a distributed architecture that eliminates communication requirements. It is suitable for megawatt-level photovoltaic medium-voltage DC power generation scenarios.

The application relates to the technical field of electro-optical frequency comb generation, and discloses a super-narrow-line-width, wide-band, flexible-repetition-frequency and adjustable electro-optical comb generation system and method, which comprises a pump laser generation branch, a fiber ring cavity, and a frequency shift injection locking branch.The pump laser generation branch comprises a distributed feedback laser, a first polarization controller and a first circulator; the fiber ring cavity comprises a second circulator, a Brillouin gain fiber, a fiber delay line, a fiber coupler, a second polarization controller, an electro-optical modulator, a dispersion compensation fiber, an optical amplifier, a flat filter and an isolator; and the frequency shift injection locking branch comprises a narrow-bandwidth filter, a polarization controller and a frequency shifter.The electro-optical frequency comb generation device of the application has a novel structure, realizes super-narrow-line-width, wide-band, flexible-repetition-frequency and adjustable electro-optical comb output, solves the limitations of narrow bandwidth and wide comb line width of a traditional electro-optical frequency comb generated based on electro-optical modulation, and does not need complex active optoelectronic feedback to maintain stable operation of the system.

The application relates to a magnetoelectric antenna device and a vehicle, the device comprising a plurality of magnetoelectric antenna units, an antenna shell and an antenna base, the plurality of magnetoelectric antenna units being connected in series, the aspect ratio of the magnetostrictive layer of each magnetoelectric antenna unit being different, so that the plurality of magnetoelectric antenna units have different working frequency bands, the series connection between the plurality of magnetoelectric antenna units is used to improve the receiving bandwidth, and the deficiency of the magnetoelectric antenna unit in the narrow bandwidth can be made up.

The invention discloses a multi-layer structure refractive index and three-dimensional morphology synchronous measurement method based on structured light illumination, a spatial light modulator is used for carrying out amplitude modulation on a narrow-bandwidth monochromatic illumination light source to generate required stripe structured light, and before measurement, a single-layer structure is used as a sample, and the single-layer structure is used as a sample; then, the piezoelectric ceramic drives the structure to be measured to perform axial scanning, a phase shift algorithm is adopted for analysis to obtain modulation degree distribution of each scanning position, a modulation degree curve of the modulation degree changing along with the scanning positions is further obtained, and finally the full width at half maximum of the curve is calculated. By calculating the full width at half maximum of a modulation degree response curve of the multilayer structure and combining the established refractive index measurement model, the refractive index distribution of the multilayer structure is obtained through analysis, and finally, the three-dimensional morphology is reconstructed according to the refractive index and peak information of the modulation degree curve. The refractive index distribution and the three-dimensional morphology of the multilayer structure can be obtained at the same time, and the method has the advantages of high efficiency, simple measurement system, high adaptability and the like.

The application provides a single-layer broadband curved surface conformal antenna array, relates to the technical field of antennas, and comprises a flexible circuit board, a wave-absorbing structure and a supporting foam; the supporting foam is arranged between the flexible circuit board and the wave-absorbing structure; the flexible circuit board, the supporting foam and the wave-absorbing structure are integrally bonded and fixed; and the flexible circuit board is a single-layer flexible PCB substrate. The flexible circuit board is provided with front and back surface circuits; a radiation unit is obtained by combining the front and back surface circuits; a feeding structure is arranged at the center position of the radiation unit; and the feeding structure is electrically connected with the radiation unit. The application solves the problems of the existing curved surface conformal antenna, such as narrow bandwidth, or wide bandwidth but complex structure of multilayer structure.