53results about How to "Working bandwidth" patented technology

The invention relates to a wide-frequency-band common-caliber base station antenna array based on a composite wave-transparent structure, and belongs to the field of base station array antennas in the mobile communication technology. Comprising a low-frequency antenna, a high-frequency antenna and a metal floor, the low-frequency antenna is located above the high-frequency antenna, and the orthographic projection of the low-frequency antenna and the orthographic projection of the high-frequency antenna are partially or completely overlapped on the metal floor; the low-frequency antenna is composed of three layers of composite wave-transparent structures, and when high-frequency electromagnetic waves irradiate the composite wave-transparent structures of the low-frequency antenna, the composite wave-transparent structures are excited to form a mixed wave-transparent structure; two or more resonance points can be introduced into the mixed wave-transparent structure, so that a broadband transmission window is further introduced, and the shielding effect on a high-frequency antenna caused by a low-frequency antenna is inhibited. The broadband common-caliber base station array antenna can work in two broadband working frequency bands, unit directional diagrams of the two frequency bands in the array are kept stable, and the broadband common-caliber base station array antenna has the advantages of being simple in structure, easy and convenient to design, capable of achieving array arrangement conveniently, low in interference and the like.

The invention discloses a dual circularly polarized common aperture phased array antenna applied to low orbit satellite communication, comprising M * N antenna array sub-arrays, the M * N antenna array sub-arrays are uniformly distributed in M rows and N columns, each antenna array sub-array comprises four antenna units, the four antenna units are uniformly distributed in 2 rows and 2 columns, any antenna unit can completely coincide with the other three antenna units when rotating by a certain angle with the central axis of the antenna array sub-array as the rotating axis, and the first antenna unit comprises a combined radiation layer, a first copper plate, a coupler layer and a second copper plate which are arranged from top to bottom. The coupler layer adopts an orthogonal coupler realized based on a short-circuit three-branch structure to convert an external radio-frequency signal into two radio-frequency signals with a phase difference of 90 degrees, and the two radio-frequency signals are transmitted to the combined radiation layer; the combined radiation layer adopts a linear dipole radiator with separated upper and lower parts to realize broadband design; the broadband wide-angle scanning device has the advantages of being capable of achieving wide-angle scanning, wide in frequency band, simple in overall structure and low in manufacturing cost.

The utility model provides a reflection type polarization rotator which comprises a reflection bottom plate, a dielectric layer and a metal patch, the reflection bottom plate is used for reflecting electromagnetic waves, the dielectric layer is arranged on the upper surface of the reflection bottom plate, the metal patch is arranged on the upper surface of the dielectric layer, and the horizontal section of the metal patch is of a structure shaped like a Chinese character'wang '. And the center line of the structure shaped like the Chinese character'wang 'is inclined to the horizontal polarization direction and the vertical polarization direction. The reflection type polarization rotator provided by the utility model has wider working bandwidth and higher polarization conversion efficiency, and is simple in structure and more convenient to process and apply.

The invention provides an ultra-wide-band wide-scanning-angle planar tight coupling array antenna. The antenna comprises a plurality of antenna units which are periodically arranged; the antenna unit comprises a coating layer, a radiation layer, a wave absorbing layer and a metal floor which are sequentially arranged from top to bottom and are not in contact; the radiation layer comprises a radiation layer dielectric plate, and a radiation patch and a coupling patch which are printed on the upper surface and the lower surface of the radiation layer dielectric plate; the radiation patch adopts an interdigital dual-polarization dipole structure; the coupling patch consists of a circular metal patch and four quasi-isosceles trapezoid metal patches which are spliced on the circumference of the circular metal patch and are uniformly distributed; the wave-absorbing layer comprises a wave-absorbing layer dielectric plate and an annular thin-film resistor printed on the upper surface of the wave-absorbing layer dielectric plate. The coupling patch can increase the coupling capacitance between the dipoles so as to offset inductive reactance introduced by the floor and suppress resonance points in a frequency band, and the thin-film resistor in the wave absorbing layer can convert energy of incident electromagnetic waves into heat energy, so that the energy is dissipated and attenuated, the resonance points in the frequency band are suppressed, and the working bandwidth is widened.

The invention discloses an opposite-feed waveguide antenna array unit and a waveguide antenna array. The opposite-feed waveguide antenna array unit comprises a 180-degree E-plane power divider, a first E-plane feeder, a second E-plane feeder, a first E-plane-H-plane waveguide converter, a second E-plane-H-plane waveguide converter, an H-plane waveguide and a radiation slot array. The differential feed and equant feed scheme has the advantages of wide working bandwidth, symmetrical directional diagrams, flexible change of the physical aperture of the antenna and the like, the problem of more pain points can be solved, the feed network of feed is more compact by optimizing impedance matching, the scheme has a larger application scene, and in the aspect of implementation, the application range of the antenna is widened. The antenna can be realized by welding after two layers of injection molding parts are metalized, and can also be realized by metalizing the same layer of injection molding parts and one layer of thin copper sheet, so that the thickness of the antenna can be obviously reduced.

The invention discloses a broadband reflection amplification circuit design method based on a real frequency matching method, which comprises the following steps: firstly designing a reflection amplification circuit, designing a real frequency matching network based on the real frequency matching method, and finally inserting the real frequency matching network into the input end of the reflection amplification circuit to construct the broadband reflection amplification circuit based on the real frequency matching method. According to the method, the input impedance of the reverse amplification circuit is tested through the load traction technology, then the parameter characteristics of the matching network are calculated through the optimization algorithm, and finally the structure and parameter values of the matching network are obtained through the circuit synthesis method, so that the method is not limited by a specific matching network architecture, the performance of the matching network can be greatly improved, and the reliability of the matching network is improved. The problem of broadband matching between the transmitting-receiving antenna and the reflection amplification circuit is solved, so that the reflection amplification circuit can realize high gain under different input powers and input frequencies, the working bandwidth of the reflection amplification circuit is expanded, and the purpose of expanding the application scene of the reflection amplification circuit is achieved.

The invention discloses an ultra-wideband reconfigurable injection-locking multi-mode single-ended input / output frequency divider circuit, which comprises an input unit, a frequency dividing circuit connected with the input unit and an output unit connected with the frequency dividing circuit, and is characterized in that the frequency dividing circuit comprises an injection-locking two-half frequency dividing circuit and an injection-locking three-half frequency dividing circuit; the input unit uses a Balun structure circuit to enable the injection locking frequency-halving circuit and the injection locking frequency-tripling circuit to be the same single-end input, and the output unit uses a Multi-tank resonance network structure to realize single-end output of two frequency-tripling and frequency-tripling modes. In the design of the broadband millimeter wave phase-locked loop chip, better efficacy and ultra-wideband performance can be realized, the cost is lower, and the integration is easy.

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 substrate integrated trapped wave mirror image dielectric waveguide S-shaped circularly polarized antenna, which belongs to the field of antennas and comprises an S-shaped dielectric radiator, a metalized through hole, a microstrip feeder line, a first metal grounding plate, a first dielectric substrate, a second metal grounding plate and a second dielectric substrate, the S-shaped dielectric radiator is embedded in the first dielectric substrate and located in the center of the antenna, the lower surface of the S-shaped dielectric radiator is tightly attached to the second metal grounding plate, the upper surface of the S-shaped dielectric radiator is not covered, a plurality of metalized through holes penetrate through the first dielectric substrate and are arranged on the periphery of the S-shaped dielectric radiator in an array mode, and a gap is formed in the second metal grounding plate. The microstrip feeder is located on the lower surface of the second dielectric substrate and is perpendicular to the gap. The end, away from the gap, of the microstrip feeder is connected to a feed port in the second dielectric substrate. Circular polarization is easy to realize by combining the bent dielectric structure with the slot coupling feed at the bottom, and the radiation efficiency of the antenna is improved by using the notch mirror image structure in the antenna design.

The invention belongs to the technical field of microwave antennas, and particularly provides a tight coupling phased array with a tail end unit loaded with asymmetric dipoles. The main structure of the antenna comprises a radiation structure (I) which is composed of frequency selection surfaces which are arranged above folded dipoles and are periodically arranged, dipoles which are symmetrically arranged in a central unit and dipoles which are asymmetrically arranged in an edge unit; and the feed structure II is composed of a gradient microstrip feeder line, a metal floor and a coaxial line. According to the invention, a frequency selective surface is loaded above a folded dipole, a traditional tight coupling phased array is replaced, a heavy dielectric layer is loaded above the dipole, and a 1 * 8 one-dimensional linear array is designed. Besides, by prolonging the length of the folded dipole on the tail end array element, compared with a traditional structure, extra capacitance is introduced under the condition that the height of the array section is not changed, and the problem that the array is difficult to match at low frequency is effectively relieved.

This application provides a dual-polarized differential base station antenna, relating to the field of communication technology. The dual-polarized differential base station antenna includes a dielectric substrate, a first resonant cavity, multiple second resonant cavity groups, a coupling component, and a coaxial feed conductor. The first resonant cavity is disposed inside the dielectric substrate and extends to the upper and lower surfaces of the substrate. A first radiation slot is provided on the upper surface of the first resonant cavity. Multiple second resonant cavity groups are symmetrically distributed around the first resonant cavity. Each second resonant cavity group includes at least one second resonant cavity, and a second radiation slot is provided on the upper surface of each second resonant cavity. The coupling component connects the first resonant cavity to each second resonant cavity group. The coaxial feed conductor is connected to a ground plane and penetrates the dielectric substrate to connect to the upper surface of the first resonant cavity. The dual-polarized differential base station antenna of this application achieves high gain, high isolation, and wide bandwidth performance while maintaining a low profile structure.

This invention proposes a dual-channel hexagonal lattice photonic crystal non-volatile optical switch based on resistive switching effect. It includes a photonic crystal waveguide with a TE bandgap, disposed on a photonic crystal. Several silicon dielectric pillars are arranged on the photonic crystal, with the waveguide positioned between them. The input waveguide has an input port, and the output waveguide has two output ports with opposite directions. A resonant cavity is located between the input port and the two output ports. A defective dielectric pillar is located within the resonant cavity, with electrodes coated with electrochemical metal at both ends. These electrodes are connected to a bias circuit. Due to the resistive switching effect, when a voltage is applied across the defective dielectric pillar, conductive filaments are formed inside, thereby adjusting the resonant frequency of the resonant cavity and controlling the switching of the signal light. This invention is easy to array, has a small structure size, fast switching time response, high optical transmission efficiency, and is non-volatile.

The present invention relates to a space electromagnetic energy collection system based on a planar logarithmic periodic antenna, and belongs to the field of electromagnetic technology. The system includes an improved planar logarithmic periodic antenna, an impedance matching rectifier unit and a power management unit; wherein the improved planar logarithmic periodic antenna is used to receive radio frequency signals in the 0.5GHz-3GHz frequency band in the environment; the impedance matching rectifier unit is connected to the improved planar logarithmic periodic antenna, wherein the impedance matching part realizes the maximum acquisition of the received signal, ensures that each link of the system maintains a standard impedance of 50 ohms, and the rectifier and filter part is composed of a transmission line, a fan-shaped branch and a diode rectifier array, and performs "signal-energy" conversion; the present invention improves the electromagnetic energy collection efficiency, can effectively extend the standby time of the Internet of Things terminal, and can solve the self-power supply problem of the ultra-low power consumption Internet of Things terminal, and has broad application prospects in the field of the Internet of Things.

The invention provides a long-wave and very-long-wave infrared all-silicon anti-reflection metasurface forming method and system. The method comprises the steps that S1, optical information of a high-purity silicon material is collected; s2, solving a complex refractive index parameter of the high-purity silicon material according to the optical information; s3, establishing a metasurface model according to the complex refractive index parameters; s4, obtaining a reflectivity curve of the high-purity silicon column structure based on the metasurface model; s5, obtaining the average reflectivity according to the reflectivity curve, and selecting the corresponding physical parameters of the high-purity silicon column structure under the condition that the average reflectivity is minimum; periodically arranging the physical parameters on a high-purity silicon substrate so as to form a target metasurface; the high-purity silicon column structure provided by the invention and the high-purity silicon substrate are made of the same material, so that the problems of thermal stress mismatch and easy falling caused by introduction of a new material are avoided, and the high-purity silicon column structure can be adapted to detectors working at normal temperature and low temperature.

The present invention discloses a design and optimization method for an ultra-wide bandwidth oblique incident angle absorber, which significantly expands the working bandwidth of the absorber by using a multi-layer periodic structure. The absorber can simultaneously meet the conditions of normal incidence, TE polarization preset angle and TM polarization preset angle within a preset working bandwidth, that is, achieve ultra-wideband and oblique incident angle. The optimization method includes: modeling a periodic lossy square ring, using equivalent circuit theory to establish a mathematical model of the absorber, the model can calculate the reflection coefficient of the absorber under oblique incident conditions, and based on a genetic algorithm, a global optimal search is performed on the working bandwidth of the absorber to obtain the initial optimal value of the unknown parameter, and the initial value of the parameter is optimized by full-wave simulation to determine the final parameters of the absorber, and the design of the absorber is completed. This can significantly improve the design efficiency of the absorber, so that the performance of the absorber in ultra-wideband and wide incident angle can meet actual needs.

The invention relates to a low-scattering array based on integration of a absorption and transmission integrated metasurface and a Vivaldi antenna, the low-scattering array is composed of N * N units, and each unit comprises a loss layer, an antenna radiator, an air layer between the antenna radiator and the loss layer, and a floor. The loss layer takes a dielectric plate as a substrate, resonators are printed on the upper surface and the lower surface of the dielectric plate, and each resonator is formed by sequentially rotating 90 degrees, 180 degrees and 270 degrees along the anticlockwise or clockwise direction by taking the center of the square dielectric plate as a rotating center and positioning. The antenna radiator takes a dielectric plate as a substrate, a first surface of the dielectric plate is printed with a metal patch of a radiation structure, a second surface of the dielectric plate is printed with a feed network composed of an impedance conversion microstrip line and a fan-shaped microstrip line which are connected in sequence, and the floor is a metal plate with a rectangular gap. According to the metasurface and antenna integrated structure, the bandwidth of the metasurface and antenna integrated structure is greatly widened while out-of-band scattering reduction is achieved, the low-profile characteristic is shown, and the actual application requirement of a broadband antenna system is met.

The utility model discloses a multi-loop antenna, which comprises a feed connector, a plurality of insulating sheaths and oscillators, the insulating sheaths and the oscillators are sequentially arranged, the length of each oscillator is lambda / 2, and lambda is operating wavelength; one end of the vibrator sequentially penetrates through the first holes formed in the insulating sheaths and then is connected with a core wire of the feed connector, and the other end of the vibrator sequentially penetrates through the second holes formed in the insulating sheaths and then is close to the core wire of the feed connector and is in a suspended state; the part of the oscillator between the adjacent insulating sheaths is arranged to be an annular body, and a preset included angle exists between the radial cross sections of the adjacent annular bodies. The total length of the oscillator is lambda / 2, and after winding, the length of the multi-loop antenna is about lambda / 2pi and is obviously lower than lambda / 4. Therefore, the length of the manufactured antenna is smaller than that of a lambda / 4 whip antenna and that of a 3 lambda / 4 J-shaped antenna. Besides, the length of the oscillator is lambda / 2, which is one time longer than the length of the oscillator of a lambda / 4 whip antenna, so that the radiation capability of the oscillator is improved.

The invention discloses a broadband power amplifier based on transformer coupling, and relates to the technical field of radio frequency integrated circuits, and a matching network based on transformer coupling effectively expands the working bandwidth of the power amplifier. The broadband power amplifier adopts a two-stage structure, the two stages adopt pseudo-differential cascode structures, a driving stage adopts a neutralizing capacitance technology to improve the circuit stability, and a power stage adopts a thick-gate transistor to improve the gain; input matching adopts a mode that a common-source gate inductor is respectively coupled with a common-gate and common-source inter-stage inductor and a common-source parallel inductor, and inter-stage and output broadband matching is realized through a magnetic coupling resonant cavity structure, so that the broadband high-gain performance of the power amplifier is realized.

The application discloses a heart-shaped broadband circularly polarized patch antenna, which comprises a dielectric substrate, a heart-shaped radiation patch, a microstrip feed line and a ground plate. A characteristic mode analysis method suitable for irregular geometric shapes is proposed, that is, a plurality of non-orthogonal characteristic modes are used to realize a broadband circularly polarized antenna. The application has the advantages of simple structure, beauty, compactness, simple feed mode, wide impedance and axial ratio bandwidth, and stable radiation pattern. The new method has clear physical mechanism, simple steps and wide application prospect.

The application discloses a wide-band hat-type feed antenna and belongs to the technical field of satellite communication antennas. The method adopts a light-wall shaped horn loaded with an outer corrugated slot and a choke slot, improves horn and space matching, realizes expansion of a frequency band from 1.6:1 to 2.8:1, loads a slot at the horn mouth and the edge of the choke slot, realizes equalization characteristics of a feed radiation pattern, adopts a small-size sub-reflector to reduce shielding of the reflector, loads double choke slots in the reflector, reduces diffraction of the sub-reflector, and improves antenna radiation efficiency, and uses spline parameterization of the sub-reflector and the main reflector to realize integrated optimization design, so that the frequency bandwidth of the traditional hat-type feed is expanded, and good side lobe and efficiency performance are realized.

The invention discloses a broadband low-profile magnetoelectric dipole antenna for ultrashort wave directional communication, which comprises an antenna metal floor, a stepped metal feeder line and two rectangular metal sheets, and is characterized in that the stepped metal feeder line is arranged between the two rectangular metal sheets; the inner side of each rectangular metal sheet is fixedly connected with the antenna metal floor through a folding short-circuit metal wall; and two suspended U-shaped parasitic metal sheets are arranged at the corners of the outer side of each rectangular metal sheet. The short-circuit metal wall of the magnetoelectric dipole antenna is folded, so that the profile height of the antenna is effectively reduced, and meanwhile, the short-circuit metal wall of the antenna is slotted, so that the impedance matching characteristic in an antenna band is improved. The four U-shaped parasitic metal sheets are introduced around the antenna, so that the working bandwidth of the antenna is expanded under the condition that the antenna has relatively high gain, and the ultra-short wave directional antenna has the advantages of simple structure, wide frequency band, low profile, high directionality and the like, and can be applied to ultra-short wave directional communication.

The invention discloses a broadband dual-circular-polarization reconfigurable conformal antenna and a design method thereof, and relates to the technical field of radiation antenna elements, and the antenna comprises a substrate, a radiation assembly, a ground plane, and a feed port. Wherein the radiation assembly comprises a cross dipole and four parasitic patches above the ground plane, two adjacent arms of the cross dipole are connected with the inner conductor of the coaxial feed port, and other arms are connected with the ground plane through short circuit pins. The four PIN diodes are integrated on the four arms of the cross dipole, the element can flexibly switch the polarization state between two orthogonal CP modes, and the conformal ground is loaded below the polarization reconfigurable conformal radiation element, so that unidirectional radiation is realized. Meanwhile, the four fan-shaped parasitic patches arranged in the four quadrants of the dipole are used for expanding the working bandwidth.

The invention provides an islanding-free half-slot folded waveguide slow-wave structure, a slow-wave circuit and a traveling wave tube, and the folded waveguide slow-wave structure comprises a multi-periodic cavity structure which is defined by a plurality of upper grid bodies and a plurality of lower grid bodies, wherein the upper grid bodies and the lower grid bodies are distributed in a staggered manner. The folded waveguide slow wave structure comprises a straight waveguide section, a waveguide connection section and an electron beam channel which are communicated; the waveguide connection section comprises an inner boundary, and the inner boundary is located in the boundary limited by the electron beam channel; the intersection point of the center line of the inner boundary and the axis of the electron beam channel is located on the inner boundary. According to the folded waveguide slow-wave structure, an island structure in a conventional folded waveguide is removed, the electron bombardment resistance of a slow-wave circuit is improved, the electron beam channel has higher structural toughness, and the problem that the strength of the slow-wave structure is insufficient under the terahertz high-frequency band is solved.

The present invention provides a broadband high-efficiency Huygens metasurface lens, comprising a plurality of lens units arranged in a square array, the lens units having high transmission performance and 360° transmission phase regulation, and the structure thereof comprises, from top to bottom, a first metal layer, a dielectric substrate layer, and a second metal layer; the first metal layer is located on the upper surface of the dielectric substrate, and comprises an outermost C-shaped circular ring, a second outer C-shaped circular ring, four circular arcs intermittently distributed in the middle layer, and a circular patch with a cross-slit structure removed in the inner layer. The second metal layer is located on the lower surface of the dielectric substrate, and comprises a C-shaped circular ring that is centrally symmetrical with the outer layers of the first and second metal layers, and an intermediate layer and an inner layer structure that are mirror-symmetrical with the intermediate layer and inner layer structure of the first metal layer; the Huygens metasurface lens of the present invention solves the shortcomings of a high aperture profile of a traditional plane and the need for a multi-layer structure to achieve full-cycle phase compensation, and has high gain, high efficiency, and a wide working bandwidth.

The utility model relates to the technical field of antennas, in particular to a miniaturized oscillator and an antenna. The vibrator surface is arranged on the upper surface of the vibrator arm, the vibrator surface comprises two groups of radiating bodies which are arranged orthogonally, and a first arc-shaped hollow structure and two second arc-shaped hollow structures which are symmetrically arranged on two sides of the first arc-shaped hollow structure are arranged on the central axis of each radiating body; the loading section is arranged at the corner of the bottom of the oscillator arm and is vertical to the oscillator surface; according to the utility model, by reducing the aperture of the oscillator, the miniaturization of the oscillator is realized.

The invention discloses a high-gain flatness miniaturized broadband electric field probe based on a three-stage transition structure. The three-stage transition structure is composed of a symmetrical arc transition structure of a coupling part, a symmetrical bevel edge transition structure of a transmission part and a gradually-changed transition improved coplanar waveguide of an output part. The improved induction tip formed by the symmetrical arc transition structure and the circular detection structure can effectively increase the coupling capacitance between the electric field probe and a to-be-detected piece and improve the transmission gain of the electric field probe at a low frequency band. The symmetrical bevel edge transition structure can enable expected energy of an induction signal to be transmitted to the output part in a more concentrated manner, restrain resonance, ringing-like ripples and surge ripples of the electric field probe in a middle-high frequency band, and improve gain flatness of the middle-high frequency band. The gradual transition improved coplanar waveguide ensures that the characteristic impedance of the contact part of the central conductor and the miniature coaxial connector is 50 ohms.

The invention discloses a frequency-adjustable bandwidth micro flexible surface acoustic wave sensor and a design and preparation method thereof. Structural design parameters and a structural design range are selected according to structural characteristics of an SAW sensor; structural design parameters, a substrate material and an electrode material are used as optimization objects, eigenvalue quality factors corresponding to all step length nodes of to-be-optimized parameters are obtained through finite element simulation calculation, a proper function fitting method is selected, function fitting is conducted on quality factors corresponding to the to-be-optimized parameters, and the quality factors corresponding to the to-be-optimized parameters are obtained; obtaining a fitting function of the to-be-optimized parameters; and optimizing the fitting function of the plurality of to-be-optimized parameters based on a multi-parameter particle swarm optimization algorithm to obtain optimized structural design parameters of the SAW sensor. A flexible substrate structure is prepared by adopting a high-precision electric field driven spray deposition 3D printing technology, and the whole SAW sensor structure is prepared by utilizing a high-precision photoetching technology. The problems that an existing SAW sensor is narrow in signal resonant frequency, large in size and poor in flexibility are solved, the stability of the SAW sensor in a complex environment is improved, and the measurement range of the SAW sensor in the complex environment is widened.

The invention discloses a high-performance miniaturized Doherty circuit, which comprises a bridge, a carrier power amplifier circuit, an auxiliary power amplifier circuit and a synthesis network, and is characterized in that the carrier power amplifier circuit comprises a first input matching circuit, a carrier amplifier and a first output matching circuit which are connected in sequence; the auxiliary power amplifier circuit comprises a second input matching circuit, a peak amplifier and a second output matching circuit; the first output matching circuit and the second output matching circuit are connected with the synthesis network, and the bridge divides an input signal into two paths of signals and inputs the two paths of signals to the carrier power amplifier circuit and the auxiliary power amplifier circuit respectively. The invention has the characteristics of high performance, miniaturization and low cost.

The embodiment of the invention discloses an energy transmission window and a manufacturing method of the energy transmission window. The energy transmission window comprises two dielectric substrates and an electromagnetic resonance unit clamped and fixed between the two dielectric substrates. The electromagnetic resonance unit comprises a plurality of resonance units arranged in an array; the resonance unit comprises a first metal circular ring with a first opening and a second metal circular ring which is arranged in the first metal circular ring and is provided with a second opening. The problems that an existing energy transmission window is large in design difficulty, complex in process, high in cost and the like are effectively solved, and the working bandwidth can be remarkably expanded under the condition that the size of an energy transmission window component is not increased.

The present invention discloses heterogeneous photonic crystal fibers in visible light and near-infrared bands, and relates to the field of optical fiber communication technology. The present invention includes an outer cladding, a left middle layer, a right middle layer, a left core region and a right core region, and a first air hole matrix is ​​arranged inside the outer cladding. The present invention expands the working bandwidth of a single photonic crystal fiber. For the right core region working at a shorter wavelength, its optimal working bandwidth range covers the complete visible light band, which can meet the transmission requirements of optical fibers for high-energy bands. For the left core region working at a longer wavelength, its optimal working bandwidth covers the near-infrared band, including the most commonly used 1.55μm wavelength in communication-related services. This working bandwidth can well meet the needs of communication services, the transmission of near-infrared band optical signals that are safe for human eyes, and the research requirements of nonlinear optics in the near-infrared band.