38 results about "Terahertz antenna" patented technology

The invention provides a terahertz antenna structure and precoding method based on a mixed single-layer and double-layer delay line, and the method comprises the steps: firstly, analyzing the relation between the position of an antenna and the delay range of a delay line based on a single-layer delay line structure, and designing a brand new delay line deployment scheme; secondly, designing a mixed single-layer and double-layer delay line structure based on a brand new delay line deployment scheme, namely, adopting a single-layer delay line structure in the middle part of an antenna needing to provide small time delay, and adopting a double-layer delay line structure at two end parts needing to provide large time delay; then calculating the maximum time delay of the mixed single-layer and double-layer delay line structure, and quantifying the hardware complexity of the mixed single-layer and double-layer delay line structure based on the maximum time delay; and finally, designing a hybrid analog digital pre-coding scheme based on the hybrid single-layer and double-layer delay line structure. According to the invention, the hardware complexity and power consumption of the terahertz antenna structure are effectively reduced, and high spectrum efficiency is maintained.

A system for facilitating managing of terahertz wave energy. The system includes a terahertz antenna, a sensor, and a processing device. Further, the terahertz antenna is configured to be operable in a terahertz frequency range. Further, the terahertz antenna is configured for managing terahertz electromagnetic waves having terahertz wave energy. Further, the sensor is configured for generating data associated with the terahertz antenna and an environment of the terahertz antenna. Further, the processing device is communicatively coupled with the sensor. Further, the processing device is configured for analyzing the data and generating a signal for the terahertz antenna based on the analyzing. Further, the processing device is communicatively coupled with the terahertz antenna. Further, the terahertz antenna is associated with parameters. Further, the parameters of the terahertz antenna are adjusted based on the signal. Further, the managing of the terahertz wave energy is based on the adjusting of the parameters.

Disclosed in the present invention is a terahertz kinetic inductance bolometer, including a superconducting thin film layer, a terahertz antenna, a cutoff layer and a Si substrate, wherein the superconducting thin film layer and the terahertz antenna are respectively deposited on the cutoff layer, and the cutoff layer is deposited on the Si substrate; the superconducting thin film layer includes a superconducting feeder line, an inter-digital capacitor and an inductor coil; the inter-digital capacitor is connected with the inductor coil in parallel to form an oscillation circuit; the terahertz antenna is adjacent to the inductor coil and is used to convert a received terahertz signal into heat so that the inductor coil produces an inductance change; a resonance frequency in the inter-digital capacitor changes through the inductance change; and the superconducting feeder line receives the varying resonance frequency, through which an light intensity of the terahertz signal can be obtained to complete the detection of the terahertz signal. The terahertz kinetic inductance bolometer can detect the terahertz signal accurately and is less affected by the temperature. The present invention also provides a preparation method of the terahertz kinetic inductance bolometer and a terahertz detection system.

The present invention discloses a terahertz dynamic inductive thermal radiometer, comprising a superconducting thin film layer, a terahertz antenna, a cutoff layer, and a Si substrate. The superconducting thin film layer and the terahertz antenna are respectively deposited on the cutoff layer, which is deposited on the Si substrate. The superconducting thin film layer includes a superconducting feeder, an interdigital capacitor, and an inductor coil. The interdigital capacitor and the inductor coil are connected in parallel to form an oscillating circuit. The terahertz antenna is adjacent to the inductor coil and is used to convert received terahertz signals into heat, causing the inductor coil to produce an inductance change. This inductance change causes the resonant frequency within the interdigital capacitor to change. The superconducting feeder receives the changed resonant frequency, and the changed resonant frequency can be used to obtain the light intensity of the terahertz signal, thereby completing terahertz signal detection. The terahertz dynamic inductive thermal radiometer can accurately detect terahertz signals and is less affected by temperature. The present invention also provides a method for preparing the terahertz dynamic inductive thermal radiometer and a terahertz detection system.

The invention discloses a time delay evaluation method and system, electronic equipment and a computer storage medium, and relates to the technical field of communication, and the method comprises the steps: determining the beam alignment overhead of a terahertz self-organizing network; determining directional data transmission overhead of the terahertz self-organizing network; generating a time delay evaluation parameter according to the ratio of the beam alignment overhead to the directional data transmission overhead; acquiring the current network topology of the terahertz self-organizing network; generating a current shortest delay routing table among network nodes in the current network topology; according to the current shortest delay routing table, determining the current antenna use probability of the terahertz antenna in the complete routing forwarding process, and determining the current path use probability of the path in the complete routing forwarding process; and generating the current average end-to-end time delay of the terahertz self-organizing network based on the time delay evaluation parameter, the current antenna use probability and the current path use probability. According to the invention, the determination parameters of the average end-to-end time delay are expanded, and the accuracy of time delay evaluation is improved.

The present invention discloses a reflection-type non-metallic material defect detection and component analysis device and method. The device includes a linearly frequency modulated source module, a solid-state switch matrix, a low-noise amplifier module group, a terahertz signal transceiver device, an intermediate-frequency signal acquisition module, and a host computer that are connected in sequence. The terahertz signal transceiver device includes a first split-type terahertz signal transceiver integrated link group, a second split-type terahertz signal transceiver integrated link group, a first pair of terahertz antennas, a first transparent non-polarizing beam splitter, a first multi-focus parabolic mirror, a second pair of terahertz antennas, a second transparent non-polarizing beam splitter, a second multi-focus parabolic mirror, as well as a beam splitter, a third multi-focus parabolic mirror, and a four-dimensional scanning frame. The device and method disclosed by the present invention can achieve three-dimensional tomography imaging with a micron-level resolution and component analysis with a hertz-level resolution for a sample to be measured, and at the same time have advantages such as a large dynamic range and good environmental adaptability.

The invention discloses a small terahertz antenna pedestal, and belongs to the technical field of antennas. The seat frame comprises a base, an orientation assembly and a pitching assembly. The azimuth assembly is driven by a high-precision azimuth direct drive motor, is connected with an azimuth turntable through an azimuth diaphragm, and drives the azimuth turntable to rotate on a high-precision turntable bearing. The pitching assembly is driven by a high-precision pitching direct drive motor and drives a pitching box body provided with an antenna reflector to rotate between the left and right support arm combinations through a pitching diaphragm and a pitching shaft. And the left and right support arm assemblies are supported by double P2-level angular contact ball bearings, so that the structural rigidity and stability are obviously enhanced. Through the transmission mode that the direct drive motor is combined with the flexible diaphragm, the return stroke error caused by gear transmission is eliminated, high-precision and high-stability motion control over the azimuth axis and the pitching axis is achieved through the design of the high-precision bearing and the adjustable balance weight, and the small-sized terahertz antenna system is particularly suitable for being used for a small-sized terahertz antenna system with the extremely high pointing precision requirement.

This invention discloses a high-aperture-efficiency terahertz antenna, comprising: a metal resonant cavity unit, which includes a metal feed layer and a metal resonant layer stacked sequentially, wherein the metal resonant layer has a resonant through slot; and a metasurface structure unit stacked and connected to the surface of the metal resonant layer, the metasurface structure unit including a first metal layer, a dielectric substrate, and a second metal layer stacked sequentially connected to the surface of the metal resonant layer, wherein a hollow position is formed in the center of the second metal layer, and an M-row N-column metasurface reflector component is disposed within the hollow position, where M and N are both 5-7. Based on the metal feed layer and the metasurface structure unit with the dielectric substrate, this antenna achieves high aperture efficiency and high gain in the terahertz band, stable beam performance, a simple and highly integrated antenna structure, and high circular polarization conversion efficiency, meeting the requirements of long-distance communication.

The invention discloses a shaped double-reflection terahertz compact range, and belongs to the technical field of antenna testing. The device comprises a main reflector, an auxiliary reflector, an irradiation feed source, a spread spectrum module, a polarization rotary table and a six-degree-of-freedom rotary table. The primary and secondary reflectors are shaped to provide an aperture field with a uniform phase and a desired amplitude distribution. The irradiation feed source emits terahertz spherical waves to the auxiliary reflector. And the spread spectrum module performs spread spectrum on the radio frequency signal, so that the working frequency of the signal reaches a terahertz wave band consistent with that of the irradiation feed source. The polarization turntable drives the irradiation feed source and the spread spectrum module to rotate in the polarization direction; a polarization rotary table is placed on the six-degree-of-freedom rotary table and used for adjusting the relative position relation between the irradiation feed source and the auxiliary reflector. Based on the shaping design, the defects of the existing terahertz compact range are overcome, and the problem of accurate test of the high-performance terahertz antenna is effectively solved.

Disclosed in the present invention is a terahertz kinetic inductance bolometer, including a superconducting thin film layer, a terahertz antenna, a cutoff layer and a Si substrate, wherein the superconducting thin film layer and the terahertz antenna are respectively deposited on the cutoff layer, and the cutoff layer is deposited on the Si substrate; the superconducting thin film layer includes a superconducting feeder line, an inter-digital capacitor and an inductor coil; the inter-digital capacitor is connected with the inductor coil in parallel to form an oscillation circuit; the terahertz antenna is adjacent to the inductor coil and is used to convert a received terahertz signal into heat so that the inductor coil produces an inductance change; a resonance frequency in the inter-digital capacitor changes through the inductance change; and the superconducting feeder line receives the varying resonance frequency, through which an light intensity of the terahertz signal can be obtained to complete the detection of the terahertz signal. The terahertz kinetic inductance bolometer can detect the terahertz signal accurately and is less affected by the temperature. The present invention also provides a preparation method of the terahertz kinetic inductance bolometer and a terahertz detection system.

The application provides a dual-frequency microstrip combined antenna and relates to the technical field of terahertz antennas. The dual-frequency microstrip combined antenna comprises a dielectric substrate, a metal radiation patch layer arranged on the dielectric substrate, a pair of center-symmetrically arranged bowtie antennas and a pair of circular patch antennas, the circular patch antennas being connected to one end of the bowtie antennas close to the center of symmetry, and a feeding area arranged at the center of symmetry of the bowtie antennas. Through the combination of the bowtie antennas and the circular patch antennas, the original current distribution of the antenna is changed, the working frequency band of the antenna is widened, resonance points can be formed in multiple frequency bands, and the problems of low return loss and small gain of the existing antenna are solved.

This application discloses a multimode signal decomposition and simulation system and method for radio frequency targets. The system includes a signal simulation device for simulating multiple signals generated by the same radar electronic device; a control unit for generating control instructions based on the target location to be simulated and sending them to a microwave cabinet, a millimeter wave cabinet, and a near-terahertz cabinet; the microwave cabinet, the millimeter wave cabinet, and the near-terahertz cabinet for converting the received microwave signals into microwave signals, millimeter wave signals, and near-terahertz signals, respectively, and sending them to the corresponding microwave antennas, millimeter wave antennas, and near-terahertz antennas; and a control unit for controlling the microwave triple antenna, the millimeter wave triple antenna, and the near-terahertz triple antenna to perform vector synthesis on the received signals, thereby achieving signal radiation in the three frequency bands of microwave, millimeter wave, and near-terahertz at the same location. This application can simulate the simultaneous generation of multiple signals from the same target.

The invention discloses a terahertz broadband directional diagram reconfigurable slot antenna, belongs to the technical field of terahertz radio frequency front-end devices, and adopts a radiation unit and a four-direction symmetrical coplanar waveguide feed structure to realize dynamic beam reconstruction in combination with a composite beam ohmic contact type MEMS switch array. The technology is simplified through a single-layer quartz glass substrate, a multi-mode resonant cavity and a tunable artificial electromagnetic surface are integrated, the surface impedance is dynamically adjusted through an MEMS switch, the high-frequency dispersion effect is compensated, and the gain flatness is maintained. Through a three-mode beam reconstruction algorithm and control switch on-off combination,-40-degree, 0-degree and + 40-degree three-beam fast switching is achieved, the main lobe width covers 55.61-108.38 degrees, and the wide angular domain requirement is met. The technical contradiction of high gain, wide angular domain coverage and fast beam reconstruction of the terahertz antenna is effectively solved, and a high-performance and miniaturized solution is provided for 6G communication, intelligent radars and high-speed wireless transmission systems.

The invention discloses a terahertz wave decoherence method, a terahertz wave decoherence system and an imaging system. The terahertz wave decoherence method comprises the following steps: carrying out active phase modulation on coherent terahertz waves by adopting a reconfigurable phased array comprising a plurality of array elements with independent terahertz wave phase regulation freedom degrees, and regulating and controlling the number of effective array elements of the reconfigurable phased array and / or the phase regulation and control change rate of the effective array elements, and the first-order coherence function modulus value of the terahertz wave is reduced, so that the terahertz wave decoherence is realized, and the intrinsic time coherence length of the terahertz source is not changed. The reconfigurable phased array is used for performing decoherence modulation, and the variable capacitance characteristic of the SBD is used, so that the phased array receives different voltages to cause the change of junction capacitance, thereby causing the change of the resonance mode of the terahertz antenna, realizing terahertz phase modulation, particularly realizing active and controllable terahertz decoherence operation, and further optimizing the terahertz imaging effect.

The application discloses a broadband slot array antenna for terahertz signal emission and reception and a feed network thereof, and belongs to the technical field of terahertz technology.The antenna comprises a substrate layer, a ground metal layer and a dielectric layer which are arranged in layers, the ground metal layer is fixedly attached to one side surface of the substrate layer, the dielectric layer is fixedly attached to the surface of the ground metal layer away from the substrate layer, and the three are fixed in layers to form an integrated antenna base; a plurality of long slot-shaped terahertz electromagnetic wave transceiving windows arranged in parallel are formed in the ground metal layer, each terahertz electromagnetic wave transceiving window is provided with a plurality of feed points along the length direction of the terahertz electromagnetic wave transceiving window, and the feed points are used for adapting a feed structure to realize excitation, radiation and reception of terahertz electromagnetic waves.The application can realize broadband and high-gain transceiving of terahertz signals, and solves the technical problems of limited bandwidth and great difficulty in feed design of existing terahertz antennas.

The low-loss high-conversion-efficiency and high-bandwidth dual-circular-polarization terahertz antenna comprises an orthogonal converter and a horn antenna, the other end of a first rectangular waveguide and the other end of a second rectangular waveguide are combined into a third port, and a step partition plate is arranged between the first rectangular waveguide and the second rectangular waveguide on the front side of the third port. The horn antenna is fixed on the orthogonal converter through a fixing part, a through hole is formed in the fixing part, the pyramid horn antenna is communicated with the third port through the through hole in the fixing part, a plurality of layers of square-like steps are arranged in the through hole, the plurality of layers of square-like steps are composed of at least four layers of steps, and the cross section of each layer of step is a quadrangle with arc-shaped end angles, namely a square-like shape. In the direction from the orthogonal converter to the horn antenna, the sectional area of each square-like step is gradually increased, and the arc radius of each square-like step is gradually increased and is closer to a circle. The antenna has the characteristics of wide bandwidth, low reflection loss and high energy transmission efficiency.

The present invention discloses a near-field test device and method for electrical performance of a terahertz antenna and a radome, wherein the device comprises a vector network analyzer, a multi-degree-of-freedom turntable, a low-noise amplifier, a first receiving module, a second receiving module, a signal distribution module, a local oscillator source, a transmitting source, a switch, a computer and an I / O interface card, a coupler, a two-dimensional scanning frame, a polarization rotator, a scanning probe, a terahertz antenna, and a radome. The present invention adopts a link coupling method to collect reference signals, which can improve the stability of the reference signals and ensure the measurement accuracy of the phase. The present invention adopts a polarization rotator method to collect near-field electric field components, which avoids the positioning error caused by the rotating polarization probe and is conducive to improving the test accuracy.

Improvements to terahertz imaging systems and related methods of using same are disclosed. In terahertz imaging systems comprising a terahertz antenna array made up of a plurality of antenna elements each with a patch antenna and a one bit phase shifter, the phase pattern applied by each phase shifter may switch such that the reflectarray itself may act as a mixer in the signal path. Such reflect arrays may be advantageously implemented with flip- chip packages with passive resonators, and a processing unit may co-located with each patch antenna to calculate the appropriate drive signal to the phase shifter.

The application discloses a kind of field effect transistor terahertz detector chips of quadtree structure array, including chip substrate and field effect transistor terahertz detector array;Field effect transistor terahertz detector array is prepared on the surface of chip substrate using semiconductor technology, and is arranged in quadtree structure array on chip substrate;Field effect transistor terahertz detector is composed of field effect transistor and terahertz antenna, and the characteristic size of terahertz antenna is smaller and the center frequency is higher closer to the center position of field effect transistor terahertz detector array;The field effect transistor terahertz detector of different terahertz frequency band is integrated on a chip in the application, can realize the detection of wide-spectrum terahertz wave, solve the problem that the current field effect transistor terahertz detector detects narrow spectrum, and the array arrangement mode of quadtree structure can effectively reduce the area of chip, to reduce chip cost.

The invention discloses a terahertz horn antenna, a terahertz antenna array and terahertz equipment, which are applied to the technical field of terahertz devices, and comprise a standard rectangular waveguide, a first double-ridge waveguide, a second double-ridge waveguide, a third double-ridge waveguide and a double-ridge horn mouth which are in contact coupling connection in sequence along a terahertz wave transmission direction, the ridge height of the double-ridge horn mouth is gradually reduced in a stepped manner along the transmission direction of the terahertz waves; in the terahertz wave transmission direction, the sizes of the cross sections of the ridges of the first double-ridge waveguide, the second double-ridge waveguide and the third double-ridge waveguide are gradually increased in the thickness direction. The terahertz horn antenna is prepared by using the waveguide with the double-ridge structure and the horn mouth, so that strong constraint and energy focusing on a mode field are realized, the caliber of the horn is effectively reduced, and meanwhile, relatively high radiation gain and directional diagram stability are kept. The three-stage double-ridge waveguide is arranged between the standard rectangular waveguide and the double-ridge horn mouth, so that the serious influence of the welding precision and the structure parasitic effect on the performance in the traditional probe feed is avoided.

The present invention discloses a terahertz antenna integrated with a high-temperature superconducting high-order in-phase series mixer, comprising a terahertz antenna; the terahertz antenna comprises a butterfly metal layer at both ends; a plurality of low-impedance mixers are embedded between the butterfly metal layers at both ends; and the plurality of low-impedance mixers are connected by a meandering metal layer. The present invention is to design a terahertz antenna with low input impedance with multi-source excitation, and embed a high-order in-phase series low-impedance mixer in the terahertz antenna to complete impedance matching without affecting antenna performance; the butterfly-loaded meandering antenna can embed a plurality of low-impedance mixers in the meandering line to complete impedance matching without affecting antenna performance; the length of the meandering line between the mixers can be arbitrarily adjusted to adjust the active impedance and complete the matching with the mixer impedance; the embedded low-impedance mixer can be increased or decreased according to the needs of actual applications, and the impedance matching between the antenna and the mixer is improved, thereby increasing the harmonic order and reducing the impedance mismatch.

The invention provides a terahertz antenna array with low cost, low cross polarization and high gain. The terahertz antenna array comprises a metal waveguide feed layer and a radiation array layer, the metal waveguide feed layer comprises a feed waveguide, an E-plane T-shaped junction, two offset waveguides and two differential excitation plane parabolic reflectors, the feed waveguide is used for vertical feed, the E-plane T-shaped junction is connected with the feed waveguide and the two offset waveguides, the two offset waveguides are located at the focal points of the two plane parabolic reflectors respectively, and the two plane parabolic reflectors are connected with the E-plane T-shaped junction. The two plane parabolic reflectors are in mirror symmetry, the reflecting surfaces of the plane parabolic reflectors are paraboloids, and the short-circuit surfaces are the short-circuit ends of the plane parabolic reflectors; the radiation array layer is used for coupling and radiating energy from the metal waveguide feed layer. Two plane parabolic reflectors which are distributed in a mirror image mode and feed in a differential mode are arranged in the metal waveguide feed layer, the high-gain characteristic can be achieved, and the whole antenna array can keep extremely low cross polarization.

The invention discloses a multi-mode signal decomposition and simulation system and method for a radio frequency target. The system comprises signal simulation equipment used for simulating various signals generated by the same radar electronic equipment; the control unit is used for generating a control instruction according to a target position to be simulated and sending the control instruction to the microwave cabinet, the millimeter wave cabinet and the near terahertz cabinet; the microwave cabinet, the millimeter wave cabinet and the near-terahertz cabinet are respectively used for converting received microwave signals into microwave signals, millimeter wave signals and near-terahertz signals and sending the microwave signals, the millimeter wave signals and the near-terahertz signals to the corresponding microwave antenna, the millimeter wave antenna and the near-terahertz antenna; and the control unit is used for respectively controlling the microwave triple antenna, the millimeter wave triple antenna and the near terahertz triple antenna to carry out vector synthesis on the received signals so as to realize signal radiation of three frequency bands of microwaves, millimeter waves and near terahertz at the same position. The system can simulate the same target to generate various signals at the same time.

A system for facilitating managing of terahertz wave energy. The system includes a terahertz antenna, a sensor, and a processing device. Further, the terahertz antenna is configured to be operable in a terahertz frequency range. Further, the terahertz antenna is configured for managing terahertz electromagnetic waves having terahertz wave energy. Further, the sensor is configured for generating data associated with the terahertz antenna and an environment of the terahertz antenna. Further, the processing device is communicatively coupled with the sensor. Further, the processing device is configured for analyzing the data and generating a signal for the terahertz antenna based on the analyzing. Further, the processing device is communicatively coupled with the terahertz antenna. Further, the terahertz antenna is associated with parameters. Further, the parameters of the terahertz antenna are adjusted based on the signal. Further, the managing of the terahertz wave energy is based on the adjusting of the parameters.

The invention discloses a 6G terahertz dual-polarized antenna, relates to the technical field of wireless communication, and aims to solve the problems of narrow frequency band, low gain and high profile of a microstrip antenna in terahertz antenna design in the prior art. The antenna comprises a metasurface structure layer, a first substrate layer, a second substrate layer, a ground plane layer, a third substrate layer and a horizontal feed layer in the Y-axis direction of the antenna, the metasurface structure layer comprises a target metasurface unit and a cross-shaped patch located at the center of the target metasurface unit; therefore, the terahertz dual-polarized antenna can realize large bandwidth, low profile and high gain under the terahertz frequency, the performance of the terahertz dual-polarized antenna is improved, and the stability and reliability of a 6G signal in long-distance transmission are ensured.

The present invention discloses a terahertz planar reflector array antenna based on a square ring nested structure, belonging to the field of terahertz technology. The novel reflector array unit structure proposed in the present invention takes into account the design requirements of full phase modulation, wide bandwidth, anti-polarization sensitivity and other characteristics, breaking through the difficulty that the traditional scheme cannot take into account phase, frequency band and polarization. The present scheme adopts a rotationally symmetric structure, has no polarization sensitivity, and has a wider effective bandwidth; the novel reflector array unit structure proposed in the present invention avoids the dependence of phase modulation capability on fine structure, introduces a broadband array to realize broadband phase modulation, and reduces the requirements for processing accuracy, so it is suitable for applications in millimeter wave and terahertz frequency bands, has a simple structure, is easy to process, has stable performance and high yield; the terahertz reflector array antenna is easy to process, has low cost, small size and excellent radiation performance, and can make up for the shortcomings of existing terahertz antennas, such as limited gain, high processing difficulty, high side lobe and cross-polarization levels, etc.

The utility model provides an antenna structure applied to terahertz, a terahertz system-on-chip and a power transmission framework. The antenna structure is characterized in that an electromagnetic band gap structure is additionally arranged between a terahertz antenna array and a feed structure; the electromagnetic band gap structure comprises a metal frame and a plurality of electromagnetic band gap units. The plurality of electromagnetic band gap units are periodically arranged on the metal frame; and in the stacking direction, the terahertz antenna array is framed in the metal frame. The transmitting antenna of the transmitting end and the receiving antenna of the receiving end in the terahertz system on chip both adopt the antenna structure. The power output end of the first circuit in the power transmission framework is connected with the transmitting end of the terahertz system-on-chip, and the power receiving end of the second circuit is connected with the receiving end of the terahertz system-on-chip. According to the scheme, the antenna performance is optimized, the terahertz system chip scale packaging is realized, the complexity and the cost of microwave wireless power transmission are reduced, and the integration level is improved.

The invention discloses a waveguide array antenna which comprises a waveguide, a quartz dielectric layer and a plurality of radiation patches. The quartz dielectric layer is located on the upper surface of the waveguide, and the plurality of radiation patches are arranged on the upper surface of the quartz dielectric layer; a plurality of coupling gaps are etched on the upper surface of the waveguide, and the radiation patches on the upper surface of the quartz dielectric layer cover the coupling gaps in a one-to-one correspondence manner; feed-in energy penetrates through the quartz dielectric layer through the coupling gap and is coupled to the corresponding radiation patch. The resonant frequency of the waveguide array antenna is adjusted by controlling the size of the radiation patch; the invention further discloses a terahertz slot waveguide filtering antenna loaded with quartz, the terahertz slot waveguide filtering antenna is formed by cascading the band-pass filter and the waveguide array antenna, the functions of filtering and radiation can be achieved at the same time, and meanwhile due to the fact that quartz has good transparency and low loss characteristics in terahertz, the preparation process is good, and the machining precision can reach + / -2 microns at present, the terahertz slot waveguide filtering antenna loaded with quartz can be applied to the terahertz antenna. The method is very suitable for application of an actual terahertz system.

The present invention designs an ultra-wideband high-gain terahertz antenna device that is easy to integrate with a photodiode, comprising an antenna radiating arm, a dielectric substrate, an antenna feeding structure, and a dielectric lens; the antenna radiating arm is used to transmit traveling wave current and form electromagnetic radiation, thereby realizing wireless transmission of signals from the waveguide structure to free space; the middle layer of the dielectric substrate is used to support the antenna radiating arms on both sides, and the upper and lower dielectric substrates play a packaging and protection role. The feeding structure is used to achieve a broadband feeding effect, while making it easy for the antenna to form a planar integration with the terahertz photodiode. The dielectric lens is used to converge the antenna radiation energy, thereby making the antenna radiation pattern more directional and improving the overall gain of the antenna device. The terahertz antenna device proposed above adopts a transition feeding structure from a grounded coplanar waveguide to a microstrip line, which not only realizes a broadband design of the antenna, but also makes the planar structure easy to integrate with the photodiode at the transmitting front end of the optoelectronic terahertz communication system.

The present invention relates to the field of phased array technology, and discloses a reflective passive phased array element and a design method, a terahertz antenna, and an electronic device. The reflective passive phased array element includes: a metal ground layer, a substrate layer, and a radiation phase modulation layer stacked in sequence; the radiation phase modulation layer includes a radiation antenna for receiving an electromagnetic wave signal, an electrical tuning load that adds a reflection phase shift and reflection insertion loss to the electromagnetic wave signal and radiates the electromagnetic wave signal back into space; and a choke bias line for providing a bias voltage to the electrical tuning load. By providing a three-dimensional structure stacked in sequence, the present invention facilitates the miniaturization of the element, enables wafer-level on-chip integration in the terahertz frequency band, and has the advantage of being scalable to a large aperture; by adding a reflection phase shift and reflection insertion loss to the received electromagnetic wave signal through the radiation phase modulation layer and radiating the processed electromagnetic wave signal back into space, the passive phased array element can achieve an equal-amplitude single-bit phase modulation function.