32 results about "Electromagnetic bandgap" patented technology

The embodiment of the invention relates to the technical field of communication, and discloses a radar antenna and an automobile intelligent driving system.The radar antenna comprises a substrate, an electromagnetic band gap structure layer, a ridge waveguide transmission structure and an antenna radiation layer, the electromagnetic band gap structure layer is provided with a pin unit, and the pin unit forms an electromagnetic shielding area; the ridge waveguide transmission structure is arranged in the electromagnetic band gap structure layer, one end of the ridge waveguide transmission structure is connected with a chip interface, the other end of the ridge waveguide transmission structure is connected with the antenna radiation layer, and the antenna radiation layer comprises a plurality of slot antennas arranged in the longitudinal direction and a plurality of choke groove assemblies. One choke groove assembly is adjacent to one slot antenna, and the electromagnetic band gap structure layer is connected with the antenna radiation layer to form a gap waveguide transmission channel. By means of the mode, electromagnetic connection between the layers can be achieved without a welding process, and the influence of welding quality difference on the antenna performance is avoided.

This invention discloses a gapped waveguide circularly polarized antenna for vehicle-mounted millimeter-wave radar, relating to the field of antenna technology. The antenna includes an upper metal structure and a PCB substrate stacked below. The metal structure integrates a radiating layer, a slotted layer, and a resonant cavity layer enclosed by an electromagnetic bandgap structure and metal walls. The signal is fed in through the PCB chip port, via an E-plane waveguide and an E-H waveguide conversion structure, and then into the resonant cavity. This invention, by employing a longitudinally slotted stacked -45° tilted slot radiating element design, or in conjunction with a parasitic slot structure, can equally excite two orthogonal fundamental modes and control the phase difference, thereby achieving broadband circularly polarized radiation. This antenna adopts a single-layer metal integrated design, featuring low profile, high gain, and wide axial ratio bandwidth, and is easy to fabricate and integrate. It is particularly suitable for high-performance vehicle-mounted MIMO radar systems, effectively solving the problems of high high-frequency dielectric loss and complex circular polarization implementation in existing technologies.

This application relates to the field of electromagnetic bandgap structures and antenna decoupling technology, providing an integrated optimization design method and apparatus for EBG topology arrays. This invention constructs a joint integrated parent structure model, pre-setting multiple gaps as internal ports between discrete metal pixel patches in the EBG optimization region according to potential topological paths, establishing a discretized correlation between physical topology and electromagnetic response. The full-port impedance matrix is ​​condensed using the Schur complement algorithm. Simultaneously, the physical connectivity state of the internal ports is defined using binarized Boolean variables, and a mapping relationship between topology encoding and model S-parameters is established. This effectively equates the spatial electromagnetic topology contribution to an in-situ regulating load, enabling the genetic algorithm to perform performance evaluations in milliseconds during the evolutionary search process. This allows for the efficient synthesis of a non-uniform EBG connectivity topology with optimal decoupling performance without repeatedly calling full-wave simulation software.

The application discloses a multi-channel multi-beam double-face lead-out radio frequency micro module based on a DPC packaging substrate, comprising a multi-channel multi-beam radio frequency unit, a power management unit and a DPC packaging tube shell; a metal layer is arranged on the sidewall of the substrate of the DPC packaging tube shell, and the metal layer is jointly used with the ground metal layers on the upper and lower surfaces to form an electromagnetic shielding cavity; an electromagnetic bandgap structure is integrated on the upper surface of the substrate; and a resistance voltage division network and a power amplifier chip are connected to the lower substrate through a gold bump array flip-chip connection. Through the synergistic effect of the substrate sidewall metallization, the electromagnetic bandgap structure and the flip-chip connection of the chip, a multi-stage electromagnetic isolation barrier is constructed, the problems of signal leakage and insufficient isolation degree are solved, and the high-density integration and double-face lead-out function of the micro module are realized.

The application relates to a dual-frequency dual-polarized millimeter wave array antenna with wide-angle scanning capability and an electronic device with the same. The millimeter wave array antenna comprises, from top to bottom and sequentially stacked and separated from each other: a high-frequency radiation layer comprising a plurality of high-frequency radiation units arranged periodically, the high-frequency radiation units being dual-polarized radiation units with a first working frequency band; a low-frequency radiation layer comprising a plurality of low-frequency radiation units arranged periodically, the low-frequency radiation units being dual-polarized radiation units with a second working frequency band, the second working frequency band being non-overlapping with the first working frequency band, and the second working frequency band being lower than the first working frequency band; and an electromagnetic bandgap layer having a third working frequency band and a fourth working frequency band which are non-overlapping with each other, the fourth working frequency band being lower than the third working frequency band, the third working frequency band corresponding to the first working frequency band, and the fourth working frequency band corresponding to the second working frequency band.

This invention discloses a millimeter-wave ultra-wideband gapped waveguide mechanical synchronous phase-shifting feed device with anisotropic pulse width modulation, belonging to the field of microwave and millimeter-wave antenna technology. The device includes a stacked top cover plate, an intermediate layer, a fixed base plate, and a movable base plate. Fixed and movable pins are arranged alternately to form four rectangular waveguide channels. When the movable base plate is translated, the width of the first channel decreases to achieve phase lead, while the width of the remaining channels increases to achieve phase delay, forming anisotropic pulse width modulation offset to counteract nonlinear phase disturbances. The intermediate layer integrates stepped transitions, cross-shaped transition ridges, and oblique ridge waveguides to achieve cross-layer broadband coupling and path compensation. The power divider is loaded with capacitive grooves and inductive steps, and the second stage uses asymmetric steps and tuning pillars to achieve tapered distribution. An electromagnetic bandgap structure is provided at the gap to suppress leakage. This invention achieves compact, low-error multi-channel synchronous phase shifting in the 32-42 GHz frequency band.

The application discloses an electromagnetic bandgap structure and a circuit board, and is applied to the field of high-frequency circuits.The electromagnetic bandgap structure comprises a center part, a signal connecting line connected with the center part and extending away from the center part, and metal wires located at the periphery of the center part, the metal wires being spaced apart from the signal connecting line, both ends of the metal wires being connected with the center part, and a shielding groove being formed between the metal wires and the center part.The electromagnetic bandgap structure provided by the application increases the noise suppression cutoff frequency depth, can effectively suppress the ground bounce effect of a power layer, and further reduces the effect of the ground bounce effect on signal quality and electromagnetic radiation; the shielding groove can avoid the diffusion of a signal interference source, so as to ensure the integrity of signal transmission.

The invention discloses a single-layer gap waveguide antenna covering a full frequency band. The antenna comprises a substrate, and the substrate is provided with a PCB port-waveguide port conversion structure and a plurality of radiation antennas. The conversion structure comprises a 0-degree PCB port-waveguide port, a 90-degree PCB port-waveguide port and a central PCB port-waveguide port; the radiation antenna comprises a plurality of antenna metal columns, an antenna waveguide ridge, a plurality of rectangular radiation openings and a plurality of electromagnetic band gap structures. The antenna metal columns are used for suppressing leaky waves and adjusting offset and impedance. The antenna waveguide ridge is used for reducing the cut-off frequency of the gap waveguide feeder; the plurality of rectangular radiation openings are used for enhancing radiation through resonance and adjusting radiation amplitude and sidelobe level; the plurality of electromagnetic band gap structures are arranged around the plurality of rectangular radiation openings and are used for improving isolation and beam shaping between adjacent antennas. According to the invention, 76-81GHz continuous coverage is realized on the premise of not increasing laminations, the in-band main lobe is stable, and the side lobe is low.

This invention discloses a millimeter-wave high-amplitude and phase-coherent single-pulse sum-difference network, belonging to the field of single-pulse radar. The sum-difference network is a symmetrical planar structure, including two first-order planar magic-Ts, two second-order planar magic-Ts, two 90° twisted waveguides, four 90° waveguide turning structures, and an electromagnetic bandgap structure disposed around the network. The first-order and second-order planar magic-Ts are identical planar magic-Ts, composed of an H-plane power divider and an E-plane waveguide. The electromagnetic bandgap structure includes an interleaved slot electromagnetic bandgap structure and a metal pillar electromagnetic bandgap structure. This invention employs an integrated planar structure, requiring only one-time processing and assembly, significantly reducing processing and assembly errors. Simultaneously, the planar magic-Ts are designed to effectively avoid the inherent dispersion defects of bridges and phase shifters, achieving high amplitude and phase coherence over a wide bandwidth. Furthermore, the use of a hybrid electromagnetic bandgap structure reduces the fabrication difficulty of the device while preventing electromagnetic leakage.

The invention discloses a circularly polarized filtering grid slotted patch antenna based on a substrate integrated gap waveguide. The antenna adopts a multi-layer stacked structure and comprises a first dielectric substrate, a second dielectric substrate, a third dielectric substrate and a fourth dielectric substrate which are arranged from top to bottom and bonding layers among the first dielectric substrate and the fourth dielectric substrate, four corner cut square patches are arranged on the upper surface of the first dielectric substrate, and two corner cut rectangular patches are arranged on the lower surface of the first dielectric substrate; the upper surface of the second dielectric substrate is provided with a cross strip and four parasitic strips, and the lower surface of the second dielectric substrate is provided with a circular ring; a rectangular metal patch with a gap is arranged on the upper surface of the third dielectric substrate, and a forked microstrip feed structure and two folding strips are arranged on the lower surface of the third dielectric substrate; the upper surface of the fourth dielectric substrate is provided with a circular metal patch array, the lower surface of the fourth dielectric substrate is provided with a rectangular metal patch as large as the fourth dielectric, and the upper surface and the lower surface of the fourth dielectric substrate are connected through a metal column to jointly form an electromagnetic band gap structure. The invention has excellent upper stop band suppression capability.

The application relates to the technical field of semiconductor structures, in particular to a three-dimensional electromagnetic bandgap structure based on a through silicon via and an array system, which comprises a dielectric substrate, upper and lower surface metal layers and a via array; the metal layers are provided with central interdigital electrodes for generating planar distributed capacitances and edge comb electrodes for realizing electromagnetic coupling, and the vias connect the upper and lower interdigital electrodes to form a three-dimensional resonant loop; the array system realizes non-contact staggered engagement of the edge comb electrodes of adjacent units, forms distributed field interaction in the staggered area and excites a coupled resonant mode; through superposition of an intrinsic mode and a coupled mode in a frequency domain, a continuous wideband noise suppression stopband is formed, and the electromagnetic compatibility of a three-dimensional integrated circuit is significantly improved.

The application provides a radar package antenna layout structure and a millimeter wave radar, comprising: a package antenna substrate; a multiple-input multiple-output (MIMO) antenna array arranged on a top layer of the package antenna substrate, the MIMO antenna array comprising a transmitting antenna array and a receiving antenna array; a metal isolation strip arranged between the transmitting antenna array and the receiving antenna array; and an electromagnetic bandgap structure array group arranged between transmitting antenna units in the transmitting antenna array, each electromagnetic bandgap structure array in the electromagnetic bandgap structure array group comprising a plurality of electromagnetic bandgap structure units, and a short side of each electromagnetic bandgap structure unit being arranged perpendicularly to an electric field radiation plane of the transmitting antenna unit. The application solves the problem of a decrease in isolation caused by a compact layout.

This invention discloses a single-tooth electromagnetic bandgap resonant cavity for testing dielectric properties in the thickness direction, belonging to the technical field of dielectric property testing for microwave and millimeter-wave materials. The single-tooth electromagnetic bandgap resonant cavity constructed by this method uses the TE test mode. 10n The electric field direction within the cavity is perpendicular to the material thickness direction, enabling the testing of dielectric properties along the Z-axis. This cavity allows for multi-frequency testing, meeting testing requirements within the 2.5GHz to 110GHz frequency range. With a quality factor greater than 3000, it offers higher testing accuracy when measuring dielectric loss. Compared to a double-tooth electromagnetic bandgap resonant cavity, a single-tooth electromagnetic bandgap resonant cavity is simpler, solving the positioning difficulties caused by the need for strict symmetry in the electromagnetic bandgap structure between the two half-cavities, while also reducing manufacturing costs. Furthermore, one side of the single-tooth electromagnetic bandgap resonant cavity is a smooth metal plate, making sample insertion through the gap more convenient.

The invention provides a multifunctional passive device integrating an antenna array and a multi-channel filter, which belongs to the technical field of millimeter wave communication antennas and comprises a metal substrate, a high-frequency antenna array feed port and a low-frequency filter feed port, a pyramid horn array, a first vertical waveguide section, a cavity layer, a second vertical waveguide section and an H-shaped waveguide power dividing feed network are sequentially arranged in the metal base body from top to bottom. The low-frequency filter port is connected to the cavity layer, and the high-frequency antenna array feed port is arranged at the input port of the H-shaped waveguide power division feed network. According to the invention, integration of multiple filtering channels is realized, and the integration level and the structure multiplexing rate of a multifunctional device are improved; the antenna and the filter are integrated by means of the frequency selection characteristic of the electromagnetic band gap structure, the natural high isolation characteristic between the antenna and the filter is provided, an additional isolation structure is prevented from being added, and the design complexity is reduced.

The application relates to the technical field of electromagnetic bandgap structures and antenna decoupling, and provides an EBG topology array level integrated optimization design method and device.The application constructs a joint integrated mother structure model, multiple gaps are preset as internal ports according to potential topology paths among discrete metal pixel patches in an EBG to-be-optimized area, and the discretization association between physical topology and electromagnetic response is established.The whole-port impedance matrix is condensed through a Schur complement algorithm, meanwhile, the physical connection state of the internal ports is defined by binary Boolean variables, and the mapping relationship between topology coding and model S parameters is established, so that the spatial electromagnetic topology contribution is equivalent to in-situ load adjustment, the single performance evaluation only needs millisecond-level operation in the genetic algorithm evolution search process, and the non-uniform EBG connection topology with optimal decoupling performance is efficiently synthesized under the premise of not repeatedly calling a full-wave simulation software.

An antenna device includes a board including a conductor layer, a first conductor pattern arranged on a surface of the board, a connecting section that connects the first conductor pattern to the conductor layer, a second conductor pattern that has one end side connected to one end side of the first conductor pattern and has a length which is equal to or longer than approximately ¼ of an operating wavelength, multiple first electromagnetic bandgap elements arranged on both sides of the first conductor pattern in a longitudinal direction on the board, multiple second electromagnetic bandgap elements arranged on both sides of the second conductor pattern in a longitudinal direction on the board, a conductor plate that faces the first conductor pattern, and a third conductor pattern that has one end side connected to another end side of the second conductor pattern and is arranged on the surface of the board.

The embodiment of the invention discloses a loudspeaker module. The loudspeaker module comprises a shell assembly, a loudspeaker monomer and an electromagnetic band gap structural member, wherein the shell assembly is internally provided with a cavity, the shell assembly is provided with an antenna, the loudspeaker single body is arranged in the cavity, and the electromagnetic band gap structural member is located between the antenna and the loudspeaker single body. Therefore, the loudspeaker module realizes the integration of the loudspeaker monomer and the antenna, and meanwhile, the arrangement of the electromagnetic band gap structural member is beneficial to improving the antenna performance.

The invention belongs to the technical field of antennas, and particularly relates to a broadband and wide-angle scanning dual-circularly-polarized circular waveguide antenna array. The unit of the antenna array comprises a feed port, an impedance matching structure, a circular polarizer, a metal waveguide wall and a dielectric material filled in the waveguide. The two feed ports correspond to left-hand circular polarization and right-hand circular polarization; the circular polarizer converts linearly polarized electromagnetic waves from a port into two electromagnetic waves which are vertical in direction, equal in amplitude and 90-degree in phase difference, and the two electromagnetic waves are synthesized into circularly polarized electromagnetic waves; a conical dielectric material is loaded at the junction of the dielectric material and an air interface, and smooth impedance conversion from waveguide aperture impedance to free space impedance is provided; and the metal waveguide wall is provided with a conical electromagnetic band gap structure at the waveguide opening. When the antenna works, a signal of a port is changed into a circularly polarized signal after passing through the impedance matching section and the circular polarizer, the circularly polarized signal is radiated out at the waveguide opening, and the array can realize broadband and wide-angle scanning due to the integration of the impedance gradual change structure and the electromagnetic band gap structure.

The invention belongs to the technical field of electric vacuum, and particularly relates to a medium-loaded miniaturized high-voltage-withstanding non-uniform electromagnetic band gap structure which comprises a vacuum rectangular over-mode waveguide, a metal shell and an electromagnetic band gap structure body. The vacuum rectangular over-mode waveguide penetrates through the metal shell and the electromagnetic band gap structure body; the electromagnetic band gap structure body is fixedly packaged in the metal shell and is made of a high-dielectric-constant material, and a plurality of concentric annular grooves serving as medium loading choke grooves are formed in the two end faces of the electromagnetic band gap structure body so as to form an electromagnetic band gap surface; a cuboid ridge is arranged on each end face of the electromagnetic band gap structure body and located between the innermost ring of annular groove and the two long sides of the vacuum rectangular over-mode waveguide. Through the synergistic effect of the structures, the structure size is smaller, the withstand voltage is higher, the design size is smaller, the weight is lighter, the withstand voltage is higher, and the like.

The application discloses a miniaturized broadband SIW filter for satellite communication. The SIW structure is adopted as a design basis, and the quarter-mode substrate integrated waveguide and the composite left-hand / right-hand structure are adopted to realize miniaturization of the radio frequency filter. In addition, the electromagnetic bandgap structure is adopted to realize strong suppression effect, high selection characteristic and wideband characteristic on the stop band. Main modules of the filter include a feed port of an electromagnetic bandgap (EBG) structure, a SIW resonant cavity, an inductive coupling window module and a CRLH structure. A tapered line is adopted for impedance matching of input / output ports, and in addition, a gap structure is etched on the input / output ports to realize EBG loading. The QMSIW cavity part is cut according to the symmetry of electromagnetic wave distribution, and the volume of the QMSIW is reduced to one fourth of the whole SIW structure. The CRLH structure loading is realized by using the interdigital structure, and the EBG structure is loaded on the interdigital metal.

This invention discloses a quasi-planar dielectric resonator filter based on an electromagnetic bandgap shielding structure. It features equivalent artificial magnetic and electrical surfaces, resulting in an electromagnetic bandgap effect within the filter. This effect blocks the propagation of electromagnetic waves with wavelengths greater than one-quarter of the distance between the two surfaces. When the dielectric patch resonator is operating, only a small distance between the electrical and artificial magnetic surfaces is required to achieve broadband electromagnetic shielding. Therefore, the profile of the quasi-planar dielectric resonator filter can be made very low, making it easy to implement using multilayer printed circuit technology. Since the dielectric patch resonator is thin, it can be placed between upper and lower dielectric substrates, facilitating integration into multilayer planar circuits. Thus, the quasi-planar dielectric resonator filter offers advantages such as low profile and high integration density, resulting in low production costs. This invention has wide applications in the field of wireless communication technology.

The electromagnetic bandgap structure and the radio frequency antenna structure are disclosed. The electromagnetic bandgap structure comprises at least one inductance pattern, at least one capacitance pattern and a connecting unit; the capacitance pattern is arranged in the inductance pattern; and the capacitance pattern is connected with the inductance pattern through the connecting unit. The electromagnetic bandgap structure provided by the embodiment of the present application can filter out the radio frequency coupling signals while realizing the miniaturization of the structure.

The invention provides a non-contact terahertz waveguide switch, and the switch comprises a multi-path waveguide module which comprises three paths of waveguides which respectively point to three directions and are used for receiving observation signals; the receiving waveguide is used for receiving the electromagnetic waves from the multi-path waveguide module and is connected with a rear-end receiver; the linear motor is used for bearing the multi-path waveguide module and realizing switching communication between the receiving waveguide and different waveguide channels of the multi-path waveguide module through linear motion; an electromagnetic band gap structure is arranged between the receiving waveguide and the multi-path waveguide module; the electromagnetic band gap structure comprises a plurality of metal micro-columns which are arranged in a two-dimensional rectangular array mode, the metal micro-columns are fixed to the side, adjacent to the receiving waveguide, of the multi-channel waveguide module, and a set gap is formed between the metal micro-columns and the receiving waveguide. The system has the advantages that mechanical parts can be minimized, the size of the whole system is compact, and the weight and power consumption are reduced; the reliability and the service life of equipment can be improved, and the operation and maintenance cost and shutdown loss are reduced.

The invention relates to the technical field of communication, in particular to a novel planar monopulse sum-difference network based on a gap waveguide structure, which is characterized in that the structure of the sum-difference network is a cross seven-port network, and the sum-difference network is specifically composed of three sub sum-difference devices, a gap waveguide one-to-two T-shaped power divider and a matching structure; each sub sum-difference device is composed of a planar 3dB coupling bridge and a slow-wave structure phase shifter; according to the slow wave structure phase shifter, a ridge structure is introduced into a channel on one side to change the phase velocity of the channel, the phase difference of the two channels is 90 degrees, a sub sum-difference device of an electromagnetic band gap structure is formed in cooperation with a planar 3dB coupling bridge, and addition or subtraction of two paths of signals is achieved. And the three sub sum-difference devices, the gap waveguide one-to-two T-shaped power divider and the matching structure are mutually matched to realize addition or subtraction of four paths of signals. The sum-difference network has the advantages of simple design, excellent performance, low profile, low cost and high manufacturing consistency, and can be widely applied to engineering projects.

The invention provides electronic equipment which can be applied to the technical field of electronic equipment. The electronic device includes: a device body; the antenna module is arranged on the equipment body and comprises an antenna unit which comprises a first antenna and a second antenna which are arranged at an interval; the isolation unit is arranged between the first antenna and the second antenna and is used for isolating wireless signals between the first antenna and the second antenna; wherein the isolation unit comprises at least two electromagnetic band gap structures which are periodically arranged, and the at least two electromagnetic band gap structures can isolate wireless signals in at least two different frequency band ranges between the first antenna and the second antenna.

The invention discloses a non-contact total reflection calibration piece for a port network parameter tester and a calibration method. The non-contact total reflection calibration piece comprises a metal plate, a cylindrical platform is arranged on the metal plate, a periodic square column electromagnetic band gap structure is etched on the cylindrical platform, a cylindrical total reflection structure is etched in the middle of the periodic square column electromagnetic band gap structure, connecting holes are formed in the periphery of the periodic square column electromagnetic band gap structure, and an annular protection surface is arranged on the outermost periphery of the metal plate. The upper surface of the periodic square column electromagnetic band gap structure, the surface of the cylindrical total reflection structure and the annular protection surface are located on the same horizontal plane. The electromagnetic band gap periodic structure is used for replacing a traditional waveguide flange metal face, transverse leakage of electromagnetic waves along the flange face is restrained, the testing precision is improved, and the testing error is reduced.

The invention provides an arbitrary polarization packaging antenna based on a ka frequency band, which is formed by at least one circular polarization array element with a complete function through a two-dimensional plane array, each circular polarization array element comprises four sub-antenna units arranged in an array, a mushroom-shaped electromagnetic band gap structure is arranged between the adjacent circular polarization array elements, and the antenna units are arranged in the array. The mushroom type electromagnetic band gap structure comprises a first copper foil layer, a first dielectric layer, a second copper foil layer, a prepreg, a second dielectric layer, a third copper foil layer and a formed metal via hole which are sequentially arranged from top to bottom, and risks caused by complex processes such as cross blind burying and the like are avoided while beam scanning gain reduction is not affected.

Disclosed examples generally relate to an antenna using embedded metamaterial based electromagnetic bandgap (MTM-EBGs) unit cells, and a method of fabricating thereof. In some examples, the antenna structure comprises: an inner patch; a plurality of metamaterial based electromagnetic bandgap (MTM-EBG) unit cells disposed along an outer perimeter of the inner patch, each unit cell being configurable between an activated state and a deactivated state, each unit cell comprising a two layer parallel plate capacitive arrangement defined by, a dielectric substrate extending between a first surface and a second surface along an extension axis, two first capacitive plates fabricated along the first surface and separated by a gap, and a second capacitive plate fabricated along the second surface and overlapping with the first capacitive plates in a direction along the extension axis.

The invention relates to a low-loss LTCC millimeter wave band-pass filter. The filter comprises six ceramic dielectric layers, and the six ceramic dielectric layers are stacked from top to bottom and are respectively an input feed layer, a first grounding shielding layer, a main resonance layer, an auxiliary resonance layer, a second grounding shielding layer and an output feed layer. The main resonance layer and the auxiliary resonance layer are respectively provided with an elliptical ring-shaped resonance unit, and a cross coupling window is arranged between the main resonance layer and the auxiliary resonance layer; the input feed layer and the output feed layer adopt gradient coplanar waveguides, and the line width is gradually changed from 50 ohms to 20 ohms; the first grounding shielding layer and the second grounding shielding layer are provided with periodic electromagnetic band gap structures, and the first grounding shielding layer and the second grounding shielding layer are provided with a plurality of coupling holes. According to the invention, the Q value of the elliptical annular resonance unit is increased to 120, and meanwhile, the surface wave loss is reduced by 40% by the EBG ground structure; the elliptical ring-shaped resonance units are rotationally coupled by 40-50 degrees, so that the 3dB bandwidth fluctuation is less than 5%; the size of the filter is reduced by 30%, and meanwhile, the integration level of the whole filter is improved.

The invention discloses a multi-channel multi-beam double-sided lead-out radio frequency micro-module based on a DPC packaging substrate. The multi-channel multi-beam double-sided lead-out radio frequency micro-module comprises a multi-channel multi-beam radio frequency unit, a power management unit and a DPC packaging tube shell, a metal layer is arranged on the side wall of a substrate of the DPC packaging tube shell, and the metal layer and the grounding metal layers on the upper surface and the lower surface jointly form an electromagnetic shielding cavity. An electromagnetic band gap structure is integrated on the surface of the upper substrate; and the lower substrate is connected with a resistance potential-divider network and a power amplifier chip through a gold bump array in an inverted buckling manner. Through the synergistic effect of metallization of the side wall of the substrate, the electromagnetic band gap structure and flip chip connection, a multi-stage electromagnetic isolation barrier is constructed, the problems of signal leakage and insufficient isolation are solved, and the high-density integration and double-sided lead-out functions of the micro module are realized.