358 results about "Line radiation" patented technology

A differential feed waveguide slot antenna array disclosed by the present invention comprises a radiation layer and a feed layer, the radiation layer is provided with a first antenna radiation slot group and a second antenna radiation slot group, the feed layer comprises a one-to-two power divider, a first feed line and a second feed line, one end of the first feed line is connected with a first output end of the one-to-two power divider, and the other end of the first feed line is connected with a second output end of the one-to-two power divider. One end of the second feeder line is connected with the second output end of the one-to-two power divider, the other end of the first feeder line is connected with the other end of the second feeder line, and the length difference X exists between the first feeder line and the second feeder line, so that the phase difference between a first signal passing through the first feeder line and a second signal passing through the second feeder line is 180 degrees; the first antenna radiation slot group is arranged corresponding to the first feeder line, and the second antenna radiation slot group is arranged corresponding to the second feeder line. The antenna has the advantages of wide working bandwidth, low side lobe and low cost.

The invention relates to a forward millimeter wave radar antenna. The antenna comprises a body, a wide-beam waveguide antenna, a narrow-beam waveguide antenna and waveguide transmission channels, wherein the wide-beam waveguide antenna, the narrow-beam waveguide antenna and the waveguide transmission channels are integrated in the body; the waveguide transmission channels comprise a first waveguide transmission channel and a second waveguide transmission channel; the wide-beam waveguide antenna comprises a polarization conversion structure; the antenna unit comprises a first antenna radiation cavity, a first slot radiation slot and a first opening horn which are connected in sequence, and the polarization conversion structure is connected with the first antenna radiation cavity; a first choke groove; the narrow-beam waveguide antenna comprises a splitter which is connected with the second waveguide transmission channel; the antenna structure array comprises a plurality of sub-antenna structure units, and each sub-antenna structure unit comprises a second antenna radiation cavity, a second slot radiation slot and a second opening horn which are connected in sequence; and the second choke groove is arranged beside the antenna structure array. According to the invention, the requirements of short-distance wide-angle coverage and long-distance high-precision detection are met, and the production cost is reduced.

The invention provides a high-water-resistance optical film and a polarizing plate comprising the same. The high-water-resistance optical film comprises a base film, a water-resistance layer and an adhesive layer, the structure of the high-water-resistance optical film comprises a water-resistance layer, a first adhesive layer, a base film and a second adhesive layer which are stacked in sequence, or the water-resistance layer, the base film and the second adhesive layer which are stacked in sequence, the surface of the waterproof layer is provided with nanometer protrusions and micropore structures which are uniformly and orderly arranged. The high-water-resistance optical film has excellent hydrophobicity, the water-resistance layer can efficiently absorb ultraviolet radiation, the problems of aging, yellowing, embrittlement and the like of the optical film caused by ultraviolet radiation are effectively prevented, the high-water-resistance optical film can be applied to a polarizing plate, and the service life of the polarizing plate is greatly prolonged.

The invention belongs to the field of electromagnetic numerical methods, and relates to a rapid simulation solving method for radiation characteristics of a large-scale array antenna. In the simulation solution process of the large-scale array antenna, a regional decomposition technology is adopted: firstly, m * n antenna units in the center of the large-scale array antenna are selected as small-scale array antennas; then, establishing a unit model of an antenna array, and performing corresponding simulation solution for a small-scale array antenna according to the arrangement of the array; thirdly, constructing a matrix equation for finite element region decomposition solution, and obtaining a far field of the small-scale antenna array through matrix multiplexing simulation solution; further, a far field of a large-scale array antenna is expanded; and finally, obtaining a radiation far-field parameter result of any amplitude phase distribution by changing feed source parameters of the large-scale array antenna excitation unit according to actual requirements. According to the method, the radiation characteristics of the large-scale array antenna can be quickly simulated and analyzed only by carrying out actual simulation calculation on a small-scale antenna array.

The invention provides an antenna protection efficiency testing system and method based on a reciprocity principle, and belongs to the technical field of antenna testing. According to the invention, the reciprocity characteristic of the energy selection protection antenna is utilized, the microwave source signal is directly injected into the energy selection protection antenna to be tested, the power of the microwave source signal is gradually increased, the electromagnetic wave radiated by the energy selection protection antenna is received through the standard receiving antenna, and the change of the radiation capability of the energy selection protection antenna is observed. When the radiation capability of the energy selection protection antenna is reduced, the energy selection protection antenna enters a protection state, and the accurate protection efficiency can be calculated through the comparison of the radiation capability. As the antenna is a reciprocal device, the change of the receiving capability can be reversely deduced through the change of the radiation capability, namely, the protection efficiency of the energy selection protection antenna is calculated.

The invention discloses a broadband dual-circularly-polarized low-cost phased-array antenna array element, which comprises an antenna radiation structure and a slot feed structure which are arranged independently from each other, and is characterized in that the antenna radiation structure comprises a parasitic radiation layer, a first dielectric substrate, an excitation radiation layer and a second dielectric substrate which are arranged in a laminated manner; the slot feed structure comprises a slot layer, a third dielectric substrate, a strip-shaped transmission line and a fourth dielectric substrate; the antenna layer structure and the slot feed structure realize electromagnetic coupling transmission through the slot layer; a hollow symmetrical structure is arranged in the middle of the first dielectric substrate, and the hollow part is used as an air medium to reduce dielectric loss; the gap layer is provided with a multidirectional coupling gap structure; the strip-shaped transmission line is provided with at least two feed ports, and dual circularly polarized radiation is formed in the antenna layer structure through excitation of different feed ports. The antenna radiation layer has no metal through hole or blind hole, can be processed in a layered manner, has the advantages of low processing cost and high yield, and ensures impedance bandwidth while realizing dual circular polarization.

The invention discloses an in-situ measurement method and device for incident ICF pellet X-ray radiation flow, and the method comprises the following steps: transmitting a laser beam into a preset ICF black cavity, enabling the laser beam to irradiate the inner wall of the preset ICF black cavity to form a light spot region, and determining the region, except the light spot region, on the inner wall of the preset ICF black cavity as a non-light-spot region; the X-ray radiation flow of the light spot area and the X-ray radiation flow of the non-light-spot area are measured respectively; and according to the preset ICF black cavity and the ICF pellet, constructing a black cavity-pellet model, and according to the black cavity-pellet model, the light spot radiation flow and the non-light spot radiation flow, obtaining 4 # imgabs0 # space X-ray radiation flow distribution entering the ICF pellet. According to the invention, the in-situ measurement of the X-ray radiation flow distribution of the 4 # imgabs1 # space of the incident ICF pellet can be realized, and the experimental measurement capability of the X-ray radiation flow is improved.

The invention belongs to the technical field of antennas, and discloses a dual circularly polarized leaky-wave antenna based on a substrate integrated waveguide, which comprises a feed structure and a radiation structure, the feed structures are symmetrically arranged at the two ends of the radiation structure, and the feed structures and the radiation structure are substrate integrated waveguides; the feed structure is used for converting received external electromagnetic energy into guided electromagnetic waves and has the characteristic of widening impedance; wherein a gradient coplanar waveguide transmission line is designed in the feed structure; the radiation structure is used for converting the guided electromagnetic waves transmitted by the feed structure into circularly polarized electromagnetic waves in a free space; wherein a grid window leaky wave structure is designed in the radiation structure; by combining the leaky-wave antenna and the substrate integrated waveguide technology, the gradient coplanar waveguide transmission line is designed on the feed structure, and the grid window leaky-wave structure is designed on the radiation structure, so that the millimeter wave working frequency band requirement is met, and the antenna has the characteristics of wide axial ratio bandwidth, low side lobe, large scanning range, low profile and low cost.

The invention provides electronic equipment. The electronic equipment comprises a frame, a first antenna unit and a second antenna unit, the first antenna unit comprises a first antenna radiator and a first feed source, one end of a first radiation section of the first antenna radiator forms a free end, the other end of the first radiation section is coupled with one end of a first parasitic section, and the other end of the first parasitic section is grounded; the first radiation section is provided with a first feeding point electrically connected with the first feed source and a grounding point which is located on the side, facing the free end, of the first feeding point and is grounded. The first antenna radiator supports a first mid-high frequency band. The second antenna unit comprises a second antenna radiator and a second feed source, one end of a second radiation section of the second antenna radiator is grounded, the other end of the second radiation section is coupled with one end of a second parasitic section, the other end of the second parasitic section is grounded, and the second radiation section is provided with a second feed point electrically connected with the second feed source; the second antenna radiator supports a first low frequency band. The electronic device can give consideration to both cost and miniaturization.

The invention provides a dual-frequency common-caliber antenna radiation unit and a dual-frequency common-caliber antenna, and relates to the communication and antenna technology, and each radiation unit comprises a K-frequency-band folded dipole, four Ka-frequency-band microstrip patches, and two groups of feed baluns in orthogonal layout. The Ka frequency band microstrip patch is coupled with the feed network layer through two H-shaped Ka frequency band coupling gaps which are arranged in an orthogonal mode, an orthogonal feed balun is adopted to achieve selectable K frequency band dual-linear polarization, left-hand circular polarization or right-hand circular polarization, and an orthogonal H-shaped gap is adopted to achieve selectable Ka frequency band dual-linear polarization, left-hand circular polarization or right-hand circular polarization. The dual-frequency common-caliber antenna comprises an antenna layer, a feed network layer, a strip line and a waveguide switching layer, the antenna layer comprises radiation units in a periodic array, and through the technical means of bridging, vertical conductive via holes and the like, the number of layers of PCBs is reduced, meanwhile, the high-density feed network layout is achieved, and the overall performance of the antenna is improved. The K frequency band / Ka frequency band common aperture design and the polarization-selectable multi-polarization application are effectively realized.

The invention discloses an ultraviolet radiation measurement method, and particularly relates to the technical field of data measurement. A photoelectric detection technology with a wide spectral response range, the waveband subdivision capability of a multi-waveband optical filter and a dynamic evaluation and environment compensation model of signal quality are combined, and the accuracy of ultraviolet waveband radiation intensity distinguishing under the multi-light-source interference condition is evaluated and improved by extracting a spectral resolution deviation value and a signal-to-noise ratio abnormal value; when the measurement precision is influenced by the environment temperature and humidity, a nonlinear compensation model is used for dynamic correction, the result stability is ensured, in addition, a low-power-consumption wireless communication module is used for achieving efficient transmission of processed data, the requirement for long-time portable use of equipment is met, and the application range is wide. High-precision and multi-band ultraviolet measurement is achieved, meanwhile, low power consumption and portability are achieved, and reliable technical guarantee is provided for ultraviolet measurement in environment monitoring, medical health and industrial application.

The invention provides an overhead transmission conductor radiation coefficient evaluation method and system, and the method comprises the steps: A1, obtaining the operation data and environment data of a transmission conductor in a preset time period, and enabling the operation data to comprise a conductor temperature collection value; a2, establishing a heat balance equation according to the operation data and the environment data; and A3, solving the transient differential equation based on the established heat balance equation to obtain a conductor temperature calculation value, and obtaining a radiation coefficient evaluation value of the transmission conductor based on the conductor temperature acquisition value and the conductor temperature calculation value. Based on a heat balance equation of the conductor, an optimization solving model of the conductor radiation coefficient is established, so that accurate solving of the transmission conductor radiation coefficient is realized, and the problem that the current transmission conductor radiation coefficient is difficult to effectively and accurately obtain is solved. The accuracy of the evaluation result of the thermal stability limit of the power transmission line and the power supply reliability of a power system are improved.

The invention discloses a low RCS broadband array antenna based on modification processing and a wave absorbing material and a design method of the low RCS broadband array antenna. The design method comprises the following steps: firstly, designing an ultra-wideband Vivaldi antenna working in an X wave band; then analyzing the radiation and scattering surface current distribution of the antenna in the X wave band, and carrying out shaping processing on the antenna according to a simulation result; performing array design on the designed antenna to form an array antenna; and finally, analyzing the surface current in the radiation and scattering states of the array antenna, covering a higher scattering current area with a wave absorbing material, and reserving a high radiation current area of an antenna slot line area so as to reduce the RCS and reserve the radiation performance of the antenna. The low RCS broadband array antenna is designed by adopting the design method. According to the invention, the design requirements of high gain, high directivity and low RCS of the broadband array antenna are met, the effects of in-band RCS reduction, radiation performance maintenance and multi-angle reduction are considered, and the application of the antenna is expanded.

An X-ray imagining film that transforms X-ray radiation into visible light by scintillating, includes a substrate and a nanocomposite formed on the substrate. The nanocomposite includes perovskite nanosheets and plural organic chromophores that interact with the perovskite nanosheets through F—Pb bonds. The perovskite nanosheets are selected to absorb the X-ray radiation and emit first light centered on 510 nm, and the plural organic chromophores are selected to absorb second light between 400 and 600 nm, with a peak at 510 nm, and emit the visible light in 500 to 800 nm range.

An X-ray inspection apparatus includes an X-ray radiator configured to generate X-rays by applying a first voltage between a negative pole and a positive pole in an X-ray bulb and radiate X-rays to a transported article, an X-ray detector configured to detect the X-rays radiated from the X-ray radiator, an inspection unit configured to generate an X-ray transmission image based on a detection result of the X-ray detector and inspect the article, and a control unit configured to change a voltage applied between the negative pole and the positive pole. The control unit applies a second voltage higher than the first voltage between the negative pole and the positive pole before starting radiation of X-rays generated by applying the first voltage or after completing radiation of X-rays generated by applying the first voltage.

The invention discloses a phase-free antenna measurement method, a phase-free antenna measurement system and a storage medium. The phase-free antenna measurement method comprises the following steps: constructing a measurement system comprising an antenna to be measured, a measurement probe, a fixed auxiliary reference antenna and software defined radio; the probe is controlled to move and sample on the scanning plane, and the SDR synchronously collects receiving signals of the probe and the reference antenna; based on the frequency domain transformation result of the two paths of signals, the radiation field amplitude of each sampling point and the relative phase relative to the reference antenna are directly calculated through non-iterative operation, so that complete complex electric field distribution on the scanning plane is reconstructed; and finally, obtaining a far-field directional diagram through near-field-far-field transformation. The fixed reference antenna is introduced to serve as a phase reference, synchronous acquisition and direct calculation are achieved in combination with the SDR, the antenna radiation field can be rapidly and accurately recovered without direct phase measurement or complex iteration in the single scanning plane and single scanning process, and the method has the advantages of being simple in system, high in measurement efficiency and high in signal drift resistance.

To provide a line radiation type excimer lamp which efficiently radiates light such as ultraviolet rays discharged in a discharge pipe to a radiation target object.SOLUTION: In a discharge tube 20 of an excimer lamp 10, an outside surface 20S is covered by an external electrode 40 and a part of the outside surface which is not covered by the external electrode 40 is used as a window 20W for light transmission. A foil electrode 30 forms wedge shape 34A and 34B sharpened to both ends E1 and E2 in the width direction, the end E2 facing the external electrode 40 and the end E1 facing the window 20W.SELECTED DRAWING: Figure 4

The invention discloses a dual circular polarization 3D printing multi-beam Luneberg lens antenna, which adopts a 3D printing metamaterial technology and comprises a Luneberg lens and a feed antenna, the luneberg lens comprises M spherical layers which are concentrically arranged; each spherical layer comprises a plurality of units with corresponding effective refractive indexes; each unit is composed of asymmetric dielectric rods which are mutually orthogonal in the x direction, the y direction and the z direction. The Luneberg lens with the asymmetric cross structure has different responses to incident horizontal polarization and vertical polarization, so that the Luneberg lens realizes conversion from dual-linear polarization to dual-circular polarization; the feed antenna is arranged at a polarization angle of 45 degrees relative to the x axis of the Luneberg lens; the feed antenna comprises a plurality of electromagnetic dipole antenna radiation structures, and each electromagnetic dipole antenna radiation structure introduces a first feed port and a second feed port which are orthogonally arranged. By switching the corresponding feed ports, the finally generated polarization mode of left-hand circular polarization or right-hand circular polarization can be easily changed.

The invention relates to a microstrip patch antenna based on an antipodal double-helix groove, which comprises the antipodal double-helix groove, a patch, a substrate, a grounding plate and a coaxial probe, and is characterized in that the substrate is mounted on the grounding plate, the patch is mounted on the substrate, the antipodal double-helix groove is formed in the patch, and the coaxial probe sequentially penetrates through the grounding plate, the substrate and the patch; the coaxial probe is used for feeding the patch, and a radio frequency electromagnetic field is generated between the patch and the grounding plate. According to the microstrip patch antenna, the antipodal double-spiral grooves are formed, the path length of current flowing through the patch is increased, the resonant frequency of the antenna is reduced to a large extent, meanwhile, the good radiation characteristic is kept, the antenna radiation efficiency is high, the directional diagram is regular, and the electrical size of the microstrip patch antenna is reduced while the high radiation efficiency is kept.

Embodiments of the present application relate to the technical field of communications, and provide an antenna radiation structure, an antenna, and a communication device. The antenna radiation structure comprises a metal floor, and a magnetoelectric dipole and a magnetic and conductive integrated plane which are arranged on the metal floor; the magnetoelectric dipole comprises four magnetoelectric structure subunits; the four magnetoelectric structure subunits are symmetrically distributed in the center of the metal floor; magnetic dipole patches of the four magnetoelectric structure subunits form an X-shaped cavity; the magnetic and conductive integrated plane comprises a plurality of magnetic and conductive integrated units; each magnetic and conductive integrated unit comprises a metal column connected to the metal floor and a metal patch arranged on the metal column; and the height of the magnetic and conductive integrated unit is less than that of the magnetoelectric structure subunit.

Embodiments described herein relate to a device for attenuating ultraviolet radiation in an air handling system, wherein the device is arranged for insertion in a ducting section of the air handling system, the device comprising: a plurality of elongate flow passages, wherein each of the plurality of elongate flow passages is configured to permit airflow through the elongate flow passage from an inlet of the device to an outlet of the device; wherein each of the elongate flow passages comprises one or more internal walls comprising a coating configured to absorb a proportion of incident ultraviolet radiation.

The invention belongs to the technical field of radioactive metal isotope ion chromatographic separation, and discloses a medical radioactive isotope purification multichannel ion liquid chromatography system. The system comprises an automatic sample injection system, a parallel sampling and leaching channel, a parallel multi-column chromatographic structure, an online radiation dose monitoring module, a multi-channel tail end detection system, a recycling structure and a central control system. By adopting a full-automatic sample injection and multi-channel parallel chromatography structure, parallel separation, real-time radiation monitoring, multi-mode online detection and closed-loop recovery are realized, and the problems of insufficient nuclear purity, low separation efficiency, low target recovery rate and high radiation exposure of a traditional method are solved.

The invention relates to the field of large-spacing array antenna design optimization, in particular to a low-sidelobe large-spacing array antenna amplitude and phase design optimization method. Amplitude and phase values are randomly distributed for each large-spacing array element, the variation ranges of the amplitude and phase values are set, and a series of large-spacing array antenna radiation patterns with different characteristics can be generated through the random amplitude and phase combination, so that the large-spacing array antenna radiation pattern is more uniform in radiation. The rich radiation pattern data form a training data set of a neural network model, then the neural network model is trained through the obtained data set, and after training is completed, the radiation pattern of the large-spacing array antenna with the sidelobe level lower than-20dB is input into the trained neural network model, so that the radiation pattern of the large-spacing array antenna with the sidelobe level lower than-20dB is obtained. And outputting the optimized amplitude and phase distribution by the neural network model. The method is suitable for optimizing the design of the large-spacing array antenna.

The invention discloses an array antenna radiation near-field prediction method based on polarization vector synthesis, and the method comprises the following steps: 1) constructing a unit characteristic representation matrix for antenna units of an array antenna; 2) constructing an array configuration description matrix of the array antenna according to the unit characteristic representation matrix; 3) setting parameters of array frequency, radiation power and radiation efficiency; 4) projecting the source polarization vector from the unit local coordinate system to the array global coordinate system; 5) calculating the projection of the source polarization vector at the field point according to the position of the field observation point; 6) decomposing the projection of the source polarization vector at the field point, and calculating a horizontal polarization coefficient and a vertical polarization coefficient; and 7) calculating a horizontal polarization field, a vertical polarization field and a total field at the field point. Compared with a full-wave method, the method has the advantage that the array antenna radiation near-field prediction calculation efficiency is higher by adopting the radiation field analysis calculation model based on polarization vector synthesis.

The invention discloses a silver river cosmic ray radiation protection method based on a proton heavy ion Bragg peak. The method comprises the following steps: determining minimum energy information of ions allowed to enter a to-be-protected region; according to the ion charge, mass, energy and minimum energy information, the magnetic field intensity minimum value used for deflecting low-energy part ions with energy lower than the minimum energy information before the ions enter the to-be-protected area is given; giving the magnetic field intensity for deflecting the ions according to the minimum value of the deflection magnetic field intensity of the different types of ions; according to the magnetic field intensity, magnetic field power supply intensity is set, silver river cosmic ray protection is carried out on the to-be-protected area, and Bragg peaks of an ion dose distribution curve are prevented from being deposited in the to-be-protected area. The deposition dosage of the to-be-protected area is reduced, and effective protection of silver river cosmic rays is achieved.

The invention relates to the technical field of airship control, in particular to a floating aircraft control method and system oriented to an extreme environment. The control method comprises the following steps that environment parameters and running state data of the floating aircraft are collected in real time through a multi-mode sensor, and the environment parameters comprise the air speed of the stratosphere or under the stratosphere, the ultraviolet radiation intensity, the external temperature gradient and the air pressure fluctuation value; the operation state data comprises an air bag sealing index, propeller output power, a counterweight slide rail position and the residual capacity of the energy storage unit. Through the dynamic pressure compensation and self-repairing technology, the problem of sealing failure of the floating aircraft in an extreme environment is solved; and multi-mode wind resistance control and hybrid energy optimization are combined, so that the flight path precision and the cruising ability are remarkably improved.

The invention discloses a high-gain directional broadband antenna, which comprises a metal grounding plate, a radiation layer, a feed patch and an air dielectric layer, the radiation layer comprises a first radiation metal patch and a second radiation metal patch which are of an asymmetric structure; the feed patch is located between the first radiation metal patch and the second radiation metal patch. According to the antenna, the first radiation metal patch and the second radiation metal patch which are asymmetric are adopted, so that the resonant frequencies of the two patch antennas have a certain difference, the metal radiation antenna is connected with the metal grounding plate through a certain number of metal short-circuit columns, the radiation performance of the radiation antenna close to the middle feed patch is enhanced, and the radiation performance of the antenna is improved. The difference between the resonant frequencies of the two antennas is controlled by changing the position of the middle feed patch, and meanwhile, the effect of introducing a capacitor to improve the impedance characteristic of the antenna is achieved by introducing a gap between the feed patch and the radiation metal patch, so that the total bandwidth of the antenna is widened.

The present application relates to the field of built-in router antennas, and provides an integrated sheet metal formed built-in router antenna. It includes: at least two antenna radiating units, multiple of which are formed of sheet metal in one piece, and the antenna radiating unit includes: a radiating base and an antenna vibrator, and the antenna vibrator is provided with a coaxial line core wire welding point and a coaxial line braided layer welding point, and the coaxial line core wire welding point includes a long groove arranged on the outside of the vertical part of the vibrator, and a short groove arranged on the edge of the horizontal part of the vibrator, and the long groove and the short groove form an inverted L shape, and the coaxial line braided layer welding point is an arc-shaped groove. The integrated sheet metal formed built-in router antenna provided in the present application establishes a connection between the coaxial line and the PCB board by welding, and only one set of molds is required for forming, with a simple structure, easy installation, low cost, and can provide signals of different frequency bands, and the signal strength and coverage range are better than those of a general single antenna radiating unit.

The invention discloses a plasma welding auxiliary device for water pump shell production, and relates to the technical field of welding auxiliary equipment. The air pressure difference data, the weight data and the tension data are simultaneously collected through the analysis module, and the actual mass of the filtered matter on the surface of the filter screen is accurately calculated in combination with the weight change of the residue collection box after shutdown, so that compared with a traditional judgment mode which only depends on the air pressure difference, the interference factor of'abnormal air pressure difference caused by airflow fluctuation 'can be eliminated, and the judgment accuracy is improved; the air pressure difference change caused by unit filtering capacity is calculated, the threshold value is not a fixed value and is dynamically adjusted according to historical filtering data, and misjudgment caused by working condition change is avoided; and the analysis module incorporates four parameters of light radiation intensity, gas flow rate, temperature and humidity into a sterilization rate formula, when abnormity occurs in the welding process, the abnormity of the sterilization rate can be found in time, the required light radiation intensity is calculated and adjusted, and the sterilization rate is guaranteed.

This antenna module comprises radiation elements (121, 126), an RFIC (110), a switch (105) for selecting one of the radiation elements, and power feeding wires (141, 142, 143, 145, 210). The radiation element (126) receives a high-frequency signal in a first frequency band and radiates radio waves. The radiation element (121) receives a high-frequency signal in a second frequency band higher than the first frequency band and radiates radio waves. The RFIC converts the high-frequency signal in the first frequency band into the high-frequency signal in the second frequency band. The power feeding wires (143, 210) transmit the high-frequency signal in the first frequency band to the switch. The power feeding wire (145) transmits the high-frequency signal in the first frequency band from the switch to the radiation element (126). The power feeding wire (142) transmits the high-frequency signal in the first frequency band from the switch to the RFIC. The power feeding wire (141) transmits the high-frequency signal in the second frequency band converted by the RFIC to the radiation element (121).