61 results about "Radiation frequency" patented technology

A measuring device (10) for determining the position of a component (226) in a system (200) comprises a radiation generator (24) configured to generate a measuring radiation (22e) with at least two discrete radiation frequencies (36; 136), which are selected comb frequencies (38) of a frequency comb structure (37), wherein the frequency comb structure is defined by at least two comb parameters, of which the first comb parameter comprises a uniform frequency spacing (42) of the comb frequencies and the second comb parameter comprises a frequency offset of the frequency comb structure from a reference frequency, an optical resonator (16) comprising resonator frequencies (17) and a measuring target (14) assigned to the component and configured to measure distances by irradiating the measuring target with the measuring radiation, and a coupling module (32),which is configured to couple the at least two discrete radiation frequencies to two of the resonator frequencies and for this purpose comprises a radiation detector (50) for detecting a radiation sample (22r) of the measuring radiation branched off from the optical resonator and a control device (54), wherein the control device (54) is configured to generate a control signal (56) for the radiation generator from the radiation sample detected by the radiation detector, which control signal comprises a specification (42v) for at least one of the comb parameters.

The utility model provides a high-performance high-frequency antenna and a mobile terminal device, the high-performance high-frequency antenna comprises a first radiation branch knot and a second radiation branch knot, the second radiation branch knot and the first radiation branch knot are mutually coupled and connected, the second radiation branch knot is suspended beside the first radiation branch knot, and the second radiation branch knot is suspended beside the first radiation branch knot. The second radiation branch knot is coupled with the first radiation branch knot in a suspension manner, the second radiation branch knot comprises a first suspension branch knot and a second suspension branch knot, the first suspension branch knot is perpendicular to the second suspension branch knot, and the first suspension branch knot is coupled with the first radiation branch knot to form a first gap; the second suspension branch knot and the first radiation branch knot are coupled to form a second gap. The high-performance high-frequency antenna not only can simplify the overall routing design of the antenna, but also can effectively broaden the overall radiation frequency band of the antenna and effectively improve the radiation efficiency of the antenna.

The application discloses a PET plastic modification method and application of modified PET plastic in asphalt modification, and relates to the technical field of road engineering materials.The PET modification method comprises the following steps: (1) PET is subjected to microwave radiation treatment to realize PET depolymerization, and PET oligomer is obtained; and (2) soybean oil is subjected to grafting reaction with the PET oligomer to obtain grafted modified PET; the microwave radiation treatment is carried out under normal pressure, the radiation frequency is 2.45 GHz, and the radiation temperature is 200-300 DEG C.The PET is subjected to depolymerization by using the microwave depolymerization technology, the efficient depolymerization of the PET can be realized under normal pressure in a very short time of 2-10 min, then the PET after the microwave depolymerization is subjected to grafting modification by using soybean oil as raw material, the waste soybean oil raw material can be used, the resource utilization of the waste soybean oil raw material is realized, and the problems of phase separation and performance degradation of the PET modified asphalt material are solved.

The invention belongs to the technical field of integrated circuits, and particularly relates to a current mode logic frequency divider applied to a satellite-borne wireless communication system. The circuit structure of the frequency divider comprises an anti-radiation frequency divider core circuit, a power detection circuit, an analog-to-digital converter and a control module circuit, an input signal is input to the anti-radiation frequency divider core circuit, and an output signal is generated and output to the power detection circuit. The power detection circuit processes the received signal, outputs a processing result to the analog-to-digital converter, receives an instruction of the control module circuit and generates an output signal of the whole circuit; the analog-to-digital converter converts a processing result output by the power detection circuit into a digital signal and outputs the digital signal to the control module circuit; the control module circuit performs judgment according to an input digital signal, generates a control signal for controlling the working mode of the anti-radiation frequency divider core circuit, and generates a control signal for controlling the power detection circuit and the analog-to-digital converter; the radiation-proof frequency divider core circuit is composed of two identical current mode logic frequency dividers and six numerical control single-pole double-throw switches. Switching of the two paths of frequency divider circuits is controlled by the numerical control switch, and by applying the structure, the circuit failure probability caused by space irradiation can be remarkably reduced, and the anti-irradiation performance and the stability of the circuit are improved.

The application provides an implantable medical device, which comprises a metal shell, a circuit board, an antenna and at least one connecting structure. The connecting structure connects a radio frequency ground of the circuit board and a connecting point of the metal shell to change electromagnetic characteristics of the metal shell, the distance between the connecting point and an antenna hole is m, the extension path length of the connecting structure between the connecting point and the radio frequency ground is n, the working wavelength of the antenna is lambda, and m+n<=0.2lambda, so that the radiation frequency of the metal shell is far away from the working frequency of the antenna, the radiation of the metal shell to the antenna is reduced, the loss of the electromagnetic wave energy radiated by the metal shell to the antenna is reduced, and the radiation efficiency of the antenna is improved.

The invention relates to an accessory and electronic equipment. The accessory comprises a shell, an opening for exposing the camera is formed in the shell, a part, located on the peripheral side of the opening, of the shell is provided with a first radiator, the first radiator is configured to be coupled with an antenna arranged on the camera decorating part, the current direction of the first radiator is consistent with the current direction of the antenna, and in the thickness direction of the accessory, the thickness direction of the first radiator is larger than that of the antenna. The shortest distance between the first radiator and the antenna is smaller than one eighth of the wavelength of the radiation frequency band of the antenna. According to the setting of the invention, when the accessory disclosed by the invention is arranged on the light incident side of the camera of the electronic equipment, the signal of the antenna can be enhanced while the related functions of the accessory are realized, and the use experience of a user is improved.

An apparatus and method for improving microcirculation by suppressing and cancelling the negative effects of electromagnetic radiation from cellular phones and computers connected to wireless networks on microcirculation. The apparatus generates frequencies that are synchronized and in opposed amplitudes to the detected electromagnetic radiation frequencies, thereby suppressing and cancelling the negative effects of the electromagnetic radiation frequencies on microcirculation.

The invention discloses a packaging shielding structure design method and a semiconductor packaging shielding structure, and the design method comprises the steps: building a simulation model of a patch antenna, and simulating a field intensity radiation pattern of the simulation model to obtain a radiation frequency point of the patch antenna; the current distribution diagram of the inner surface of the metal cover at the radiation frequency point is observed, so that an auxiliary groove is formed to form a new patch antenna; establishing a new simulation model of the patch antenna and simulating a field intensity radiation pattern of the patch antenna to obtain a radiation frequency point of the new patch antenna; judging whether the radiation frequency point of the patch antenna is far away from the main frequency of the semiconductor component, if so, determining the position and size of the current auxiliary slot as the design result output, and if not, adjusting the position and size of the auxiliary slot, or adding a new auxiliary slot. And repeating the simulation steps until the radiation frequency point of the patch antenna is far away from the main frequency of the semiconductor assembly. The electromagnetic radiation of the semiconductor packaging shielding structure is reduced on the premise of low cost, and the EMC performance is optimized.

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 utility model provides a high-performance terminal antenna and a mobile terminal device, the high-performance terminal antenna comprises a first radiation antenna and a second radiation antenna, and the first radiation antenna and the second radiation antenna are mutually coupled and connected to form a coupling gap. The first radiating antenna comprises a first antenna branch knot, a second antenna branch knot, a third antenna branch knot and a feeding point which are connected in sequence, and the feeding point is electrically connected with the first antenna branch knot; the second radiating antenna comprises a grounding point and a fourth antenna branch knot, and the grounding point and the feeding point are arranged on the two sides of the coupling gap respectively. According to the high-performance terminal antenna of the utility model, not only can the main branches extending the radiation area be mutually coupled, but also the overall radiation frequency and radiation efficiency of the antenna can be effectively improved.

The present disclosure provides a display panel, and belongs to the field of display technology. The display panel includes a display module and an antenna module located on a side of a display surface of the display module; the antenna module includes an antenna unit; the antenna unit includes a dielectric substrate, a radiation structure arranged on the dielectric substrate, a first feed line and a second feed line, the first feed line and the second feed line feed the radiation structure and are electrically connected with the radiation structure, and feeding directions of the first feed line and the second feed line are different; the radiation structure includes radiation patches for at least two radiation frequency bands, and the radiation patches are electrically connected.

The invention relates to an antenna combination and terminal equipment. The antenna combination comprises a first antenna; a second antenna; the parasitic branch knot is arranged between the first antenna and the second antenna, the length of the parasitic branch knot is arranged in a preset range, the parasitic branch knot is used for enhancing the aperture of the first antenna and the aperture of the second antenna, and the preset range is related to the radiation frequency of the first antenna and the radiation frequency of the second antenna. According to the invention, the parasitic branch knot is arranged between the two antennas, and the length of the parasitic branch knot is reasonably configured according to the radiation frequencies of the two antennas, so that the calibers of the two antennas can be respectively enhanced, that is, the two antennas share the parasitic branch knot to enhance the calibers, and the radiation capability is improved; according to the antenna combination, the radiation capability of the antenna formed by the limited middle frame of the terminal equipment can be enhanced, so that the communication effect of the terminal equipment is improved.

The application provides an antenna structure applied to an electronic device including a first shell, a second shell and a hinge. The first shell and the second shell are rotatably connected through the hinge. The antenna structure is accommodated in any one of the first shell or the second shell. The antenna structure includes a feed-in part, a first radiation part and at least one grounding end. One end of the first radiation part is connected to the feed-in part, and the other end of the first radiation part has a spacing with the hinge. The first radiation part feeds in a current through the feed-in part, conducts the current and couples the current to the hinge, so as to excite at least one working mode to generate at least one radiation frequency band of a radiation signal. The application also provides an electronic device with the antenna structure.

An electromagnetic radiation frequency, or equivalent wavelength, converter, the converter including a nonlinear optical component or part having or consisting of a predetermined nonlinear optical material, and a guiding module. The guiding module has a predetermined geometry defining or controlling an effective refractive index of the guiding module, and is configured to receive and guide pump light resulting in a guided pump beam. The nonlinear component or part is bonded with or joined to the guiding module. The bonding is configured to allow at least a part of the guided pump beam to overlap and / or evanescently couple into the nonlinear optical material, and the nonlinear optical component or part is configured to convert the guided pump beam in the nonlinear optical material to an un-guided signal mode radiated as an output light signal at a different frequency or an equivalent wavelength.

The invention provides an antenna module, an antenna assembly and electronic equipment, the antenna module comprises a first antenna, a second antenna, a feed network layer and a reflecting plate, the first antenna, the second antenna, the feed network layer and the reflecting plate are stacked in sequence and are arranged at intervals, the feed network layer is electrically connected with the second antenna and the first antenna, the radiation frequency band of the first antenna is smaller than that of the second antenna, and the first antenna is a hollow antenna. Thus, because the first antenna is a hollow antenna, the radiation signal of the second antenna can directly transmit the first antenna, thereby reducing the blocking of the radiation signal of the second antenna by the first antenna, reducing the interference between the radiation signals of different frequency bands radiated by the first antenna and the second antenna, and improving the communication performance of the antenna module.

The present disclosure relates to the technical field of antenna communication, and provides an antenna unit and a multi-system shared antenna. The feeding assembly of the antenna unit is arranged on the base assembly, the dielectric substrate is arranged on the feeding assembly, the first radiation arm and the second radiation arm are oppositely arranged on the dielectric substrate along a first direction and are electrically connected with the feeding assembly; the first radiation arm and the second radiation arm are both bent back to form a wave-transparent structure, and the first radiation arm and the second radiation arm are asymmetric structures, so that the first radiation arm and the second radiation arm correspond to the wave-transparent requirements of different frequency bands respectively, and the antenna unit works through the wave-transparent structures of the bent-back first radiation arm and second radiation arm to filter electromagnetic waves of different frequency bands respectively, so as to suppress the coupling of electromagnetic waves of a high frequency band on an antenna unit of a low frequency to generate a high-frequency current, effectively suppress the scattering generated by the mutual coupling of a high-radiation frequency and the antenna unit, improve the distortion of the radiation pattern, and make the antenna meet the wave-transparent needs of different frequency bands.

The invention relates to electronic equipment, which comprises a first folding part and a second folding part, and is characterized in that the first folding part is provided with a first antenna radiator; the second folding part can be folded or unfolded relative to the first folding part, a second antenna radiator and a switch assembly are arranged on the second folding part, the first antenna radiator and the second antenna radiator are opposite in the folding state, and the switch assembly is used for controlling the current flowing direction of the second antenna radiator. According to the design, the radiation frequency of the first antenna radiator and the second antenna radiator can be ensured while the absorption of antenna radiation by a human body is reduced, so that the signal quality of the electronic equipment is ensured. Besides, the electronic equipment provided by the invention does not need an SAR (Synthetic Aperture Radar) induction antenna radiator, so that the design forms and working modes of the first antenna radiator and the second antenna radiator are not limited, and the application flexibility of the first antenna radiator and the second antenna radiator is improved.

According to the miniaturized antenna and the terminal equipment, the miniaturized antenna comprises a substrate, a first radiation unit and a second radiation unit, and the first radiation unit and the second radiation unit are located on the two faces of the substrate. A part of the branch knot of the first radiation unit is coupled with a part of the branch knot of the second radiation unit to form a coupling area, the first radiation unit comprises a grounding point, the second radiation unit comprises a feeding point, and a surface where the first radiation unit is located is communicated with a surface where the second radiation unit is located through a via hole. According to the miniaturized antenna, the overall radiation frequency band of the antenna can be expanded, the overall radiation efficiency of the antenna can be effectively improved, the overall structure of the antenna is simplified, and the overall occupied area of the antenna is reduced.

The invention provides an antenna module and electronic equipment, and relates to the field of electronic equipment. The antenna module comprises a bearing part and a conductive part, and the conductive part covers the first surface of the bearing part to define a cavity antenna. The conductive part comprises a first plate body, the first plate body is opposite to the first surface of the bearing part, and a window is arranged on the first plate body. The conductive part and the bearing part form a cavity antenna, and the cavity antenna is suitable for electronic equipment adopting a metal shell or a circuit board as the bearing part. The first plate body, opposite to the bearing part, of the conductive part is provided with the window, and the window can change the current distribution in the antenna, thereby reducing the size of the antenna module under the condition that the radiation frequency required by the antenna is satisfied, and facilitating the optimization of the internal structure of the electronic equipment.

The embodiment of the utility model relates to the technical field of communication, and discloses an antenna and communication equipment, the antenna comprises a dielectric layer, a conductive layer and a feed assembly, the dielectric layer comprises a first surface and a second surface which are oppositely arranged, a metal layer is arranged on the first surface, the conductive layer is provided with a slot, and the feed assembly is arranged in the slot. The metal layer is provided with a slot, the slot divides the metal layer to obtain a first conductive part and a second conductive part, the first conductive part is connected with the second conductive part, the radiation frequencies of the first conductive part and the second conductive part are different, the feed assembly is arranged on the first surface, and the feed assembly is connected with the conductive layer. By means of the mode, high-frequency and low-frequency signals can be radiated, and the purpose of miniaturization is achieved while signal transmission of multiple frequency bands is achieved.

A surgical site infection management lighting system that is effective and safe for human use to reduce or eliminate surgical site infections. The system provides multiple focused electromagnetic radiation frequencies at minimal energy levels for surgical and medical procedures that kills pathogens with electromagnetic radiation sources. The system includes an aiming laser, a distance sensor, a camera for providing images of the surgical site, and a motion sensor for providing control parameters. Fused silica lenses are utilized to focus the visible light for high illumination and selected electromagnetic radiation frequencies at minimal energy levels that are lethal to pathogens. The lighting system can be associated with an articulable arm, a mobile base stand, a handheld unit or a head-mounted unit.

The present invention relates to a method for the controlled selective irradiation of a surface, in order to allow the irradiation of this surface with a view to obtaining a target effect, this method being implemented by a system comprising an emitter device and a controller device, the emitter device comprising a first emitter source and at least one second emitter source, these being configured to irradiate the surface with energy radiations respectively associated with first and second irradiation frequency ranges, the method comprising a step of irradiating the surface using the first and second emitter sources in order to obtain the target effect, this irradiation being controlled by the controller device so that the first emitter source emits energy radiation in the irradiation frequency range associated with this first emitter source, for a predetermined duration, and so that the second emitter source, independently of the first emitter source, emits energy radiation in the irradiation frequency range associated with this second emitter source, for a predetermined duration.

A method for characterizing a tissue sample is disclosed, which includes placing at least one nanostructured sensor in contact with said tissue sample, wherein said nanostructured sensor includes at least one response characteristic exhibiting dependence on a refractive index of said tissue sample when said nanostructured sensor is in contact with said tissue sample; directing interrogating optical radiation at a plurality of frequencies to said nanostructured sensor; detecting, for each of said optical radiation frequencies, radiation redirected by or transmitted through said nanostructured sensor in response to said interrogating optical radiation; analyzing said detected redirected or transmitted radiation to determine said at least one response characteristic of said nanostructured sensor at each of said plurality of interrogating optical radiation frequencies; and determining at least one attribute of said tissue sample based on said determined at least one response characteristic at said interrogating optical radiation frequencies.

The embodiment of the utility model relates to the technical field of antennas, and discloses an integrated antenna and communication equipment, the integrated antenna comprises an antenna main body, an isolation structure and a metal feed structure, the antenna main body is provided with a circuit mainboard, one end of the circuit mainboard is provided with a radiation layer, and the other end of the circuit mainboard is provided with a grounding layer, the radiation layer comprises a first antenna unit and a second antenna unit, the first antenna unit and the second antenna unit are electrically connected with the grounding layer through a metal feed structure, the metal feed structure penetrates through the circuit board, the radiation frequency bands of the first antenna unit and the second antenna unit are different, and the radiation frequency bands of the first antenna unit and the second antenna unit are different. The isolation structure is arranged on the first antenna unit. Through the above mode, mutual interference between the antenna units can be effectively reduced, and the radiation efficiency of the antenna is improved.

The present invention provides a multi-frequency co-body antenna, comprising an antenna substrate with a V-shaped extension and an L-shaped extension on the left and right sides, respectively; the vertical branches of the L-shaped extension are provided with an ultra-low frequency radiation branch; the lower branches of the V-shaped extension are provided with a high frequency radiation branch, the upper branches of the V-shaped extension are provided with a low frequency radiation branch, and the horizontal branches of the L-shaped extension are provided with a first resonant branch, an intermediate frequency radiation branch, and a second resonant branch at intervals; the high frequency radiation branch and the intermediate frequency radiation branch are connected and connected to a first feeding point and a grounding point, the two ends of the first resonant branch are respectively connected to the right end of the low frequency radiation branch and the right end of the intermediate frequency radiation branch; the two ends of the second resonant branch are respectively connected to the first feeding point on the antenna substrate and the ultra-low frequency radiation branch. The multi-frequency co-body antenna of the present invention achieves full coverage of high frequency, intermediate frequency, low frequency, and ultra-low frequency radiation frequencies.

The utility model discloses a radiation stray test device, relates to the wireless communication test technology field, the radiation stray test device comprises a shielding box, a mounting rack, a first antenna, a driving assembly and a control assembly, the shielding box is internally provided with a test cavity, the first antenna and the mounting rack are oppositely arranged, the driving assembly is arranged in the test cavity, and the control assembly is arranged in the test cavity. The driving assembly and the mounting frame are distributed at intervals in the first direction, the driving assembly is connected with the first antenna, and the control assembly is electrically connected with the driving assembly and the first antenna. The communication equipment can be fixed on the mounting frame, and under the control of the control assembly, the driving assembly can drive the first antenna to move in the second direction or the third direction. Therefore, the first antenna can move to a plurality of positions around the communication equipment, and parameters such as radiation frequency at the plurality of positions can be acquired at the same time, so that the radiation stray test is completed. In the process, the radiation stray testing device can perform automatic testing, manual operation is avoided, and the working efficiency and the testing precision of radiation stray testing are improved.

The utility model discloses an antenna module. The antenna module comprises a grounding part, a first radiation part, a first feed-in part, a second radiation part and a second feed-in part, the grounding part comprises an upper grounding part, a lower grounding part and a connecting part, and the connecting part is connected with the upper grounding part and the lower grounding part; the first radiation part excites a first radiation frequency band, and the first radiation part is arranged on the first side of the upper grounding part; the first feed-in part is connected to the first radiation part and is connected with the lower grounding part; the second radiation part excites a second radiation frequency band, and the second radiation part is arranged on the second side of the upper grounding part; the second feed-in part is connected to the second radiation part and is connected with the lower grounding part; the first side and the second side of the upper grounding part are adjacent, and the first radiation part and the second radiation part are arranged on the two sides of the connecting part respectively. According to the antenna module disclosed by the invention, the problem of insufficient space for placing the antennas in the prior art can be solved, and a plurality of antennas can be arranged in a limited space under the condition of considering the isolation degree.

The application discloses a thermoacoustic loudspeaker with electroacoustic linear response characteristics based on Peltier effect and a preparation method thereof, and belongs to the field of acoustic devices. The thermoacoustic loudspeaker comprises a functional array formed by one or more array elements, and a plurality of electrodes connected with the first and second end surfaces of the array elements. Each array element is formed by a functional material which generates Peltier effect under the condition of being electrified and the electrodes connected therewith. The sidewalls of the plurality of array elements are electrically insulated from each other, and all the array elements are electrically connected through the electrodes. The functional material of the array element, the electrode material and the connection mode of the electrode and the array element are selected so that the Peltier effect dominates the temperature fluctuation of the surface of the device, and then the thermoacoustic effect is realized by periodically heating and cooling the adjacent gas thin layer. Under the driving of alternating current, the upper and lower surfaces generate Peltier heat with opposite phases, and the sound waves with the same radiation frequency, opposite phases and linear relationship between the sound pressure and the current are radiated.

The present disclosure relates to an antenna assembly and a terminal device. The antenna assembly comprises: a conductive frame, a circuit board and a metal conductor; the metal conductor is connected to a feeding point on the circuit board at one end and connected to a switch assembly on the circuit board and the conductive frame at the other end, the switch assembly is used for adjusting a radiation frequency band of the antenna assembly; and a radiator of the antenna assembly comprises the metal conductor and the conductive frame. Through the embodiment of the present disclosure, the feeding point is connected to the conductive frame through the metal conductor, the position of the feeding point can be flexibly set through the metal conductor without changing the connection position of the conductive frame, thereby reducing the situation that the setting position of the feeding point is limited; and meanwhile, the radiation frequency band can be adjusted based on the switch assembly.

The present invention describes a method for determining compensated measured values ​​of at least two physical quantities using a sensor system. The sensor system comprises at least one sensor element (SE) with crystals containing color centers. Both the first and the second physical quantity act on the sensor element (SE). A computer system (RSYS) controls the method. First, the sensor element (SE) is irradiated with modulated pump radiation (LB). A program code and configuration parameters for implementing a correction method are provided, these parameters being stored in a memory of the sensor system or the computer system (RSYS). The fluorescence radiation (FL) of the color centers, which is influenced by the physical quantities, is recorded. From the fluorescence radiation intensity values ​​(F i (t)) and fluorescence radiation delay values ​​(F φ (t)) and the pump radiation frequency (fpmp ) become vector components of a fluorescence frequency vector (F fv ). A first measured value of the first physical quantity is determined by mapping the fluorescence frequency vectors (F fv ) to a sensor state vector (S z ), for example, using a neural network model, using configuration parameters determined by a training program. As a result, the first measured value depends only on the first and not on the second physical quantity, resulting in a compensated measured value. This compensated measured value is ultimately output, stored, transmitted, or reused.