75 results about "Relative bandwidth" patented technology

The application claims a kind of multiband terahertz absorber based on laminated graphene structure, which is a laminated stack structure.The positive terminal of external power supply is connected to two layers of graphene, and the negative terminal is connected to a gold reflection layer.The Fermi energy level of graphene is controlled by voltage.The structure parameters of each layer, graphene and dielectric layer material characteristics are set.The absorber forms multiple absorption peaks in the 1~5 THz frequency band, with a peak absorption rate of over 90%.At 1.60 THz, a narrowband absorption of 93% is achieved, and at 2.54~4.28 THz, a broadband absorption with a relative bandwidth of 51% is achieved.The normalized equivalent impedance at the resonance frequency point is nearly perfectly matched with the free space impedance.The absorber also has good polarization angle insensitivity, with only slight absorption performance attenuation within an incident angle range of 0~60°.The absorption characteristics can also be adjusted by adjusting the key geometric parameters.The application can simultaneously achieve narrowband and broadband absorption, with excellent absorption performance, and is suitable for interference signal filtering in terahertz communication systems.

The invention provides a data scheduling method and system and switch equipment. The method comprises the following steps: initializing queue configuration information of data scheduling in a data center switch; extracting a relative bandwidth proportion of each data queue in the data center switch from the queue configuration information, and determining a relative quantum feature of each data queue through each relative bandwidth proportion; performing quota resetting on deficit counters of the data queues based on the relative quantum features of the data queues, determining the amount of data capable of being sent of the data queues through the deficit counters with the reset quota and the current data packet length of the data queues, and further updating the queue states of the data queues; and generating a next round of scheduling polling queue in the data center switch based on all queue states, and performing deficit polling scheduling on the data queues in the data center switch through the scheduling polling queue. Based on the scheme, cooperative scheduling of dynamic weight allocation and accurate deficit management in the switch can be realized, so that the bandwidth utilization rate of the switch can be improved.

According to the magnetoelectric dipole antenna, the coaxial feed communication bandwidth is larger than 100%, and the technical problems that broadband impedance matching and high-frequency mismatching are achieved, and the stability of a feed structure is poor are solved. According to the antenna, a meandering seam bending type electric dipole and a stepped flaring type magnetic dipole are cooperatively matched, and a feed structure and a U-shaped reflector are combined to integrally form the magnetoelectric dipole antenna. A meandering seam is etched on a horizontal rectangular patch, a vertical patch is welded on the outer side of the horizontal rectangular patch to form a three-dimensional radiator, and the three-dimensional radiator and a stepped flaring type cavity structure magnetic dipole form a closed structure. The feed structure comprises a coaxial line and two bent copper sheets, thereby realizing direct current grounding and providing mechanical reinforcement. 3.7 GHz and 4.2 GHz resonance points are introduced to realize 104.8% of relative bandwidth, while the compact structure is maintained, the broadband coverage and stable radiation characteristics are realized, the long-term reliability in an outdoor complex environment is ensured by a stable feed structure, part of 5G communication signals in a Sub-6G frequency band can be effectively covered, and the antenna is suitable for various wireless communication systems.

The utility model discloses a full-wave oscillator unit and an antenna. The full-wave oscillator unit comprises a bottom plate, an oscillator support and an antenna radiation oscillator, the antenna radiation oscillator is arranged on the front surface of the bottom plate, the antenna radiation oscillator and the bottom plate are arranged in parallel up and down, and the antenna radiation oscillator is supported by the oscillator support on the bottom plate; wherein two oscillator arms in the 45-degree direction and the-45-degree direction of the antenna radiation oscillator form a crisscross dual-polarized radiation unit. The antenna provided by the utility model has the characteristics of high gain, low cost and simple structure. The antenna mainly covers a relatively wide working frequency band of 698MHZ-960MHZ, and the relative bandwidth reaches 32%; the radiation gain of 9-10db is realized by the unit oscillators; a plurality of unit oscillators form an array antenna to realize broadband and high gain performance; through printed board processing, the size consistency is improved; the assembly structure is simple, and production efficiency is improved.

The utility model discloses a microstrip patch antenna which comprises a dielectric substrate and a radiation patch. The radiation patch is arranged on the dielectric substrate, the radiation patch is E-shaped, the parallel edge of the E-shaped radiation patch is defined as a first sub-radiation patch, the vertical edge of the E-shaped radiation patch is defined as a second sub-radiation patch, and the length of the first sub-radiation patch is larger than or equal to 2.1 mm and smaller than or equal to 2.5 mm. The E-shaped structure enables the current to bypass between the first sub radiation patch and the second sub radiation patch, which is equivalent to increasing the electrical length of the radiation patch and reducing the resonant frequency of a fundamental mode, so that the low-frequency band bandwidth is broadened; the edges of the first sub-radiation patch and the second sub-radiation patch can generate strong electromagnetic field coupling to excite an additional parasitic resonance mode, so that the frequency band is further widened, and the bandwidth of the microstrip patch antenna is effectively widened. Wherein the first sub radiation patch of 2.1 mm to 2.5 mm enables the resonant frequency of the microstrip patch antenna to range from 43.7 Ghz to 55.1 Ghz, the relative bandwidth is 23%, and high bandwidth is achieved.

This invention discloses a bandpass frequency-selective surface structure based on strongly coupled pairs, composed of multiple basic structural units. Each basic structural unit has a vertically symmetrical structure along its thickness direction. Both the upper and lower symmetrical portions include a first metal layer and a first dielectric layer in symmetrical positions. The first metal layer contains a first resonator pair, a second resonator pair, and a third resonator pair, each using metal patches as resonators. A second metal layer and a second dielectric layer, separated along the thickness direction of the basic structural unit and in asymmetrical positions, are disposed between the upper and lower symmetrical portions. The upper and lower symmetrical portions are connected by metal conductive posts. This invention operates stably at a center frequency of 5 GHz, introduces four transmission zeros, achieves a fourth-order frequency response within 8.4% of the relative bandwidth, has an insertion loss of less than 0.49 dB, and 40° angular stability, exhibiting superior performance.

The invention relates to the technical field of communication equipment, and discloses a frequency hopping filter with a hopping transmission zero point, a hopping control method and communication equipment. At least one resonant inductor of an LC resonant circuit of the frequency hopping filter is connected with a radio frequency switch feedback capacitor array in parallel; the frequency of a transmission zero point at a higher harmonic of the frequency hopping filter is controlled by controlling the opening and closing of a channel where each feedback capacitor in the radio frequency switch feedback capacitor array is located, so that the frequency of the transmission zero point changes along with the center frequency of the frequency hopping filter; and finally, far-end suppression, relative bandwidth stability and frequency hopping accuracy in a wide frequency range are improved.

The application relates to a kind of foldable band-pass filters based on polyimide flexible substrate.The filter adopts coplanar waveguide structure, and is prepared using self-assembly technology.It is tested that the filter center frequency is 2.5 GHz, the relative bandwidth is 15.9%, the minimum insertion loss is 0.71 dB, and the in-band return loss is greater than 20 dB.The performance of the filter is basically consistent in flat, curved and folded states.The flexible filter prepared using the self-assembly technology is expected to become one of the components of future flexible communication systems.

The utility model discloses a dual-frequency circularly polarized combined antenna, which comprises a metal reflecting plate, a high-frequency circularly polarized radiation unit and a low-frequency wide-beam radiation unit, the high-frequency circularly polarized radiation unit and the low-frequency wide-beam radiation unit share the same reflecting plate, and the high-frequency circularly polarized radiation unit is positioned above the low-frequency wide-beam radiation unit. According to the utility model, the embedded orthogonal dipole pair is adopted, so that the high-frequency-band axial ratio bandwidth breaks through the limitation of the traditional single-feed microstrip antenna, the relative bandwidth with the actually measured axial ratio less than or equal to 3dB reaches 18.7%, and the Beidou third-generation B1C / B2a frequency band requirement can be completely covered. The nickel-chromium alloy films evaporated on the upper and lower surfaces of the dielectric plate effectively inhibit interlayer crosstalk, the cross polarization ratio is improved to be greater than 15dB, and the dual-band radiation purity is ensured.

The invention discloses a millimeter wave ultra-wideband substrate integrated coaxial line antenna array based on a laminated metasurface. The ultra-wideband antenna array comprises a coplanar waveguide-to-substrate integrated coaxial line switching structure, a one-to-eight power divider based on a substrate integrated coaxial line structure, a butterfly coupling slot and a laminated metasurface antenna, after being fed in by the coplanar waveguide, energy is transmitted to the substrate integrated coaxial line power divider through the blind hole structure, and is uniformly distributed to eight channels in the substrate integrated coaxial line power divider; and then, the energy is coupled and fed to the laminated metasurface antenna through the coupling slot. The antenna can stably work in the frequency range of 15.84 GHz-49.15 GHz, the return loss (S11) is always lower than 10 dB, and the corresponding relative bandwidth is 102.5%. In a target working frequency band, the maximum peak gain of the antenna can reach 18.58 dBi, and the antenna has excellent ultra-wideband characteristics and good radiation performance.

This invention discloses a nested ferrite switch based on a composite magnetic circuit, belonging to the field of microwave device technology. It includes a central ferrite rod (1), an insulating dielectric sleeve (2), an excitation coil (3), and a dielectric substrate (5). A coplanar waveguide transmission line (6) is provided on the dielectric substrate (5). The central ferrite rod (1) is embedded in the central junction of the coplanar waveguide. A soft magnetic metal yoke (4) with a magnetic flux density of 2 to 5 times the saturation magnetization of the ferrite is provided outside the central ferrite rod (1). This invention uses a coplanar waveguide and a special magnetic yoke design for the ferrite switch, which can achieve the advantages of high power capacity and wide bandwidth. Through simulation design, the relative bandwidth of the ferrite switch designed with this structure can reach more than 15%.

The invention discloses a high-temperature superconducting band-pass filter design method and system, a storage medium and equipment. The method comprises the following steps: firstly, determining design indexes including center frequency, relative bandwidth and the like and an extensible structure framework formed by cascading a plurality of coupling lines and more than one branch line; respectively establishing a differential-mode equivalent circuit model and a common-mode equivalent circuit model of the filter according to a transmission line theory; then constructing a multilayer perceptron type circuit-level physical information neural network model with residual connection, inputting design indexes into the model, and embedding an equivalent circuit matrix and a target differential mode transmission function into a loss function to complete training; and outputting coupling line even-mode and odd-mode characteristic impedance and branch line characteristic impedance through the trained model, and generating a filter physical layout according to the output coupling line even-mode and odd-mode characteristic impedance and the branch line characteristic impedance. The method fuses the physical information neural network, can quickly generate the superconductive filter layout, and effectively improves the design efficiency and prediction precision.

The invention relates to a minimum relative bandwidth microwave receiving device and method. The device comprises an atomic narrowband frequency hopping communication receiving subsystem and a high-power narrowband frequency hopping communication signal transmitting subsystem. The atomic narrowband frequency hopping communication receiving subsystem is used for receiving and demodulating narrowband frequency hopping communication signals; the high-power narrowband frequency hopping communication signal transmitting subsystem is used for transmitting high-power narrowband frequency hopping communication signals; the atom narrowband frequency hopping communication receiving subsystem comprises a Rydberg atom preparation module, a three-wavelength ultra-stable laser integrated device, a communication signal broadband receiving antenna and a communication signal demodulation module; the high-power narrowband frequency hopping communication signal emission subsystem comprises a millimeter wave high-power emission source, a communication signal broadband emission antenna and a communication signal modulation module. According to the invention, the response characteristic of extremely small relative bandwidth of Rydberg atoms is utilized, out-of-band noise signals introduced into a receiving system are reduced, the detection signal-to-noise ratio of a microwave communication receiving system is improved, and the anti-interference capability of microwave communication in a complex environment is improved.

The invention provides a terahertz functional device based on a silicon-based all-dielectric, and belongs to the field of terahertz communication. The device aims to realize efficient electromagnetic wave active radiation through a controllable leaky-wave mechanism, so that the terahertz device is called a leaky-wave antenna for short. The device is composed of a photonic crystal waveguide, a periodic radiation structure and a radiation suppression layer. The overall structure is designed based on the hexagonal lattice photonic crystal, and electromagnetic wave energy can be effectively bound in the waveguide transmission line. A periodic groove is etched above a waveguide transmission line, so that energy transmitted by a waveguide is radiated to a free space at a specific angle, and a directional radiation wave beam is formed. The effective radiation frequency band of the leaky-wave antenna is a terahertz frequency band, the relative bandwidth can reach 22%, and the leaky-wave antenna belongs to a broadband radiation device. The antenna has the advantages of being small in size and capable of achieving wide-angle beam scanning and ultra-wideband detection, the beam scanning function of the antenna can be used for achieving dynamic beam forming, the reliability of a communication link and the data transmission rate can be improved, and the antenna is suitable for various application scenes such as space optical communication and biological sensing scanning.

The application discloses a band-pass filter, and relates to the field of microwave technology.The band-pass filter comprises a first shielding layer, a resonant coupling layer and a second shielding layer which are sequentially arranged from top to bottom and are made of a low-temperature co-fired ceramic process.The resonant coupling layer comprises a first coupling line, a second coupling line, four resonators arranged from left to right and three couplers;one coupler is arranged between every two adjacent resonators;the first coupling line is located above the resonators at the leftmost end and the rightmost end;the second coupling line is located below the two resonators in the middle;the resonators and the couplers are connected with ground ports;the resonator at the leftmost end is connected with an input port;the resonator at the rightmost end is connected with an output port;the first shielding layer and the second shielding layer are connected with the ground ports.The application can make the relative bandwidth of the passband less than 10%, and improve the passband performance and the stopband suppression performance.

The invention discloses an ultrasonic endoscope transducer based on a lead-free piezoelectric ceramic material as well as a preparation method and application of the ultrasonic endoscope transducer. The ultrasonic transducer comprises an acoustic backing layer, a lead-free piezoelectric layer, an acoustic matching layer and a coaxial wire, the lead-free piezoelectric layer is made of lead-free piezoelectric ceramic or a lead-free piezoelectric ceramic composite material; according to the method, the matching layer is prepared by adopting a spin-coating method, so that the method has huge advantages in preparation of a micron-sized matching layer, and a new way is provided for preparation of the matching layer of the high-frequency ultrasonic transducer. A gradient matching material is used as an acoustic matching layer, and materials with low, medium and high acoustic impedances are prepared as the gradient acoustic matching layer, so that the sensitivity and the bandwidth can be effectively improved, and the performance of the transducer is improved; the lead-free piezoelectric ceramic and the lead-free piezoelectric ceramic composite material used for preparing the piezoelectric layer of the ultrasonic transducer have the advantages of being thin in thickness, high in dielectric constant, high in piezoelectric coefficient and the like, the amplitude is high, the sensitivity is high, the relative bandwidth is large, and the imaging effect of an ultrasonic endoscope system is greatly improved.

The invention discloses a terahertz three-dimensional link interconnection-oriented bistable adjustable pseudo surface plasmon waveguide and a preparation method thereof, and belongs to the technical field of terahertz on-chip communication, the waveguide comprises a feed structure, an actuator, a patterned metal patch, a flexible dielectric substrate and a fiber-reinforced active layer, wherein the fiber-reinforced active layer is provided with a positive thermal response area and a negative thermal response area, S-shaped bending can be generated under photo-thermal excitation, and dynamic switchable interconnection between chips with different heights in a three-dimensional space is achieved. The working frequency band of the waveguide is 31.56-127.71 GHz, the relative bandwidth reaches 120%, the insertion loss is lower than 1.5 dB, and the waveguide has the characteristics of low loss, ultra wide band and bistable holding. The preparation method comprises the steps of waveguide main body structure processing, fiber reinforced active layer compounding, actuator integration and overall assembly. The method solves the problems that the existing terahertz interconnection dimension is limited and the resource allocation is fixed, and is suitable for a high-density three-dimensional integrated and dynamic reconfigurable system on chip.

The present application belongs to the technical field of electromagnetic wave absorbing materials, and particularly relates to a lightweight flexible three-dimensional cellulose aerogel absorbing wave super composite material and application thereof. The absorbing wave super composite material comprises a CNT / acrylic resin absorbing wave material layer, and absorbing wave structure units are arrayed on the CNT / acrylic resin absorbing wave material layer. The absorbing wave structure unit is a structure in which a carbon / cellulose absorbing wave aerogel is filled in a flexible resin shell. The uniform porous structure of the carbon / cellulose absorbing wave aerogel is combined with the multiple reflection and absorption performance of high conductivity, which can ensure the highest absorption performance and effective use of the conductive filler. Meanwhile, the optimization and adjustment of the geometric structure parameters of the absorbing wave super composite material make it have electromagnetic wave absorption in an ultra-wide band of 4.36-40 GHz, and the relative bandwidth reaches 160.7%. Meanwhile, the absorbing wave super composite material has large RCS attenuation under the conditions of bending and different electromagnetic wave incident angles, and can be applied to special application environments such as curved surface structures and electromagnetic wave oblique incidence.

The invention provides a compact broadband frequency insensitive rectifier for collecting electromagnetic energy in an environment, and aims to face the field of wireless power supply Internet of Things equipment. The invention finds that the double-branch LC series-parallel structure has a key characteristic that the impedance is insensitive to frequency change. By fully utilizing the characteristic, a simple matching network is designed to realize broadband performance. Through a simulation and measurement combined method, the operation effectiveness of the proposed topological structure is verified, and the design of the broadband rectification circuit is successfully realized. The rectification circuits of three different matching networks are compared, and the optimal circuit is determined. Under the input of 8 dBm and the load of 1.2 k omega, the peak power conversion efficiency of the rectifier reaches 74.75%. And the efficiency is kept above 60% at the relative bandwidth of 81.1%. Under the load condition of 0.9 k omega, the relative bandwidth with the efficiency of more than 60% is kept at 81.1%, and the bandwidth with the efficiency of more than 50% is expanded to 100%.

A broadband millimeter wave dielectric resonator antenna unit and an array structure composed of the same, the antenna unit layer structure is sequentially from top to bottom a high dielectric constant rectangular dielectric block of top layer, a low dielectric constant dielectric substrate of top layer and a low dielectric constant dielectric substrate of bottom layer. A plurality of air holes are introduced around the dielectric block to make the four modes of the antenna distributed in the millimeter wave frequency range of 21-43.65GHz working frequency band, and better impedance matching is realized in the free space. The lower surface of the top layer dielectric substrate is provided with a metal floor, and a feed gap is etched on the metal floor; the metal floor and the low dielectric constant of the bottom layer are bonded through an adhesive layer, and the lower surface of the bottom layer dielectric substrate is provided with a microstrip line. A 1xN antenna array is composed of a plurality of broadband dielectric resonator antenna units with the same structure. The dielectric resonator antenna array of the application can work in the frequency range of 24-40GHz, and the relative bandwidth is 50%; at the same time, the antenna array can realize a peak gain of 14.75dBi; in addition, the dielectric resonator antenna array has a wide-angle scanning characteristic, and the maximum scanning angle is ±56°.

The application discloses a design method of a quadrature bridge, which comprises the following steps: S1, obtaining the lowest frequency and the highest frequency of a working frequency band and calculating a relative bandwidth ratio; S2, selecting a symmetric architecture or an asymmetric Tandem series architecture according to a comparison result of the bandwidth ratio and a preset threshold; S3, determining coupling coefficients of each coupling unit in the selected architecture based on a total coupling degree requirement of a system; S4, calculating odd-mode impedance and even-mode impedance of each section coupling line in each coupling unit in the selected architecture according to the coupling coefficients; S5, judging whether the calculated odd-mode impedance and even-mode impedance meet preset engineering realizability constraints; S6, performing electromagnetic simulation verification on the design meeting the engineering realizability constraints; and S7, performing multi-physical field simulation verification on the design meeting electromagnetic simulation requirements. The application can solve the problem that a traditional symmetric architecture cannot simultaneously consider bandwidth and engineering realizability.

The invention provides a compact radio frequency rectifier adopting a novel frequency and load dual adaptive network. The proposed rectification structure comprises a dual adaptive network (DAN) to improve frequency bandwidth and expand load range, and a single impedance matching stub with an impedance matching effect. The dual adaptive network (DAN) is composed of a double-branch structure, wherein a single branch comprises a Schottky diode and a short-circuit microstrip line. The dual adaptive network (DAN) covers high and low frequency bands by using the frequency selection characteristic, and broadens the load range by using power distribution, thereby realizing the bandwidth broadening at a 3.5 GHz frequency point and the significant expansion of the load impedance. The dual adaptive network (DAN) realizes impedance matching under the action of the impedance matching stub. When the input power is 8 dBm, the power conversion efficiency (the relative bandwidth of 86.42%) of 50% or above is kept within the range of 2.2-5.8 GHz, and the peak value reaches 64.58% at 3.6 GHz. And the efficiency is kept above 50% within the load resistance range of 0.1-2.1 kilomega (the load change rate is 21).

The invention discloses a compact X-waveband end-fed broadband mode conversion device, which comprises a waveguide cavity and a coaxial cavity which are made of metal materials and are fixedly connected through four hidden screws B uniformly distributed on the wide edge of the waveguide in the horizontal direction, a rectangular waveguide channel is arranged in the waveguide cavity and is used for outputting TEmode electromagnetic waves; the coaxial cavity is used for inputting TEM mode signals and realizing broadband impedance matching through an internal coupling structure. The size of the whole machine can be compressed to be within L1, the relative bandwidth larger than or equal to 35% is obtained within the frequency band of 8-12 GHz, the full-frequency-band voltage standing-wave ratio is smaller than or equal to 1.15, and the dual requirements of a solid-state transmitter for miniaturization and broadband matching are met.

This utility model discloses a dual-polarized broadband base station antenna radiating unit, belonging to the field of broadband antenna technology. The dual-polarized broadband base station antenna radiating unit includes a metal reflector, a feed support, a radiator, and a feed conductor. The radiator includes four vibrating arms, each with a slot on its top surface and a trapezoidal slot on an adjacent side. The feed support has multiple mounting holes on its top surface, and the feed conductor is located inside these holes. A dielectric gasket is fixed to the outside of the feed conductor. This utility model is an integrated radiating unit, featuring high installation stability and good consistency in mass production. Its excellent cross-cutting ratio and port isolation characteristics, along with its 1700-2700MHz broadband characteristics, effectively address the current demand for broadband base station antennas, solving the problem that the relative bandwidth is still insufficient to meet the needs of existing ultra-wideband antennas.

An antenna device comprising a plurality of antennas arranged on a vehicle along a latitude direction intersecting the vehicle's direction of travel, includes: a first antenna supporting radio waves at a first frequency; and a second antenna supporting radio waves at a second frequency band whose fractional bandwidth is smaller than the fractional bandwidth of the first frequency, the second antenna being arranged on an outside relative to the first antenna in the latitude direction of the vehicle, the second antenna.

The invention relates to the technical field of microwave communication, in particular to a miniaturized broadband LTCC (Low Temperature Co-Fired Ceramic) band-pass filter. The filter comprises a multi-layer LTCC dielectric substrate, the LTCC dielectric substrate comprises six sintered compact ceramic layers which are arranged from top to bottom, the first ceramic layer is a top layer, the second ceramic layer and the fifth ceramic layer are respectively provided with a U-shaped strip line resonator, the third ceramic layer and the fourth ceramic layer are respectively provided with a spiral inductance resonator, and the fourth ceramic layer is provided with a spiral inductance resonator. The first ceramic layer, the second ceramic layer, the third ceramic layer, the fourth ceramic layer, the fifth ceramic layer and the sixth ceramic layer are sequentially arranged from top to bottom, metalized blind holes are formed in the second ceramic layer to the fifth ceramic layer, and asymmetric L-shaped slotted grounds are etched on the bottom layers. The fractal geometric resonator is adopted, and the effective size of the fractal geometric resonator is 35% of that of a traditional design; a six-layer LTCC laminated structure is adopted, and layers are in three-dimensional interconnection through vertical blind holes; a U-shaped strip line resonator and a spiral inductance resonator are arranged to form magnetoelectric hybrid coupling; the bandwidth is expanded to about 40% of the relative bandwidth through the asymmetric L-shaped slots.

This utility model discloses a millimeter-wave broadband impedance modulation power amplifier based on a bandpass structure, including a microwave composite board, signal input terminals VIN+ and VIN-, a first MOSFET 5XM1, a second MOSFET 5XM1, a first neutralizing capacitor CN, a second neutralizing capacitor CN, a first signal output terminal Vout-, and a second signal output terminal Vout+. The signal input terminals VIN+ and VIN- are electrically connected to the gates of the first MOSFET 5XM1 and the second MOSFET 5XM1, respectively. The two ends of the first neutralizing capacitor CN are electrically connected to the gate of the first MOSFET 5XM1 and the drain of the second MOSFET 5XM1. The two ends of the second neutralizing capacitor CN are electrically connected to the gate of the second MOSFET 5XM1 and the drain of the first MOSFET 5XM1. The first signal output terminal Vout- is electrically connected to the drain of the first MOSFET 5XM1, and the second signal output terminal Vout+ is electrically connected to the drain of the second MOSFET 5XM1. The technical solution of this utility model can achieve the goals of Ku / Ka band relative bandwidth ≥15%, 6dB backoff efficiency ≥25%, and cost reduction of more than 30%.

The application discloses a broadband end-fire antenna integrated with photovoltaic cell pieces, which operates in a 3.81-8.97 GHz frequency band, and a single unit of the broadband end-fire antenna comprises a radiation main body, a feeder and a parasitic structure; the radiation main body is formed by connecting solar cell pieces in series and then connecting the series in parallel, and is located on the upper surface of a dielectric plate; the feeder is located on the lower surface of the dielectric plate and is used for feeding power, and the radiation main body is excited by a port; the parasitic structure is located below the outer side of the solar cell pieces in a series of solar cell pieces and is connected with the solar cell pieces, and is used for improving impedance matching. By introducing the parasitic structure, the broadband end-fire antenna can cover the 3.81-8.97 GHz frequency band and realize the performance of the broadband antenna. In addition, solar energy is fully utilized, the design of perpendicularization of the illumination direction and the communication direction of the antenna is realized, the relative bandwidth reaches 80.75%, and the system complexity is low.

The application discloses a kind of topological structure and six-order high-temperature superconducting extremely narrow band band-pass filter, belong to microwave communication technical field.Aiming at the problems, such as low control degree of freedom, large size or frequency disturbance, that existing extremely narrow band filter is difficult to accurately control interstage coupling coefficient under fixed size, a kind of six-order loading stub interdigital resonator array structure based on HTS film is provided.The structure includes six same-frequency resonant units, each unit integrates upper interdigital capacitance enhancement part, lower double-helix magnetic field decoupling part, and adjustable coupling stub part around the interdigital part;By adjusting the length difference of two sides stub, the odd mode coupling coefficient between adjacent resonators is dynamically controlled under the premise of keeping the total electrical length constant, and high-precision coupling control is realized without changing the pitch and center frequency.The filter center frequency in the application is 1170.6 MHz, the 3-dB relative bandwidth is 0.09%, and the insertion loss is less than 0.1 dB, with the characteristics of miniaturization, high selectivity and high reliability.