39 results about "Microstrip patch antenna" patented technology

Embodiments herein disclose an antenna system comprising a plurality of panel comprising at least one Multiple Input Multiple Output (MIMO) antenna array, including a plurality of microstrip patch antenna elements and stacked patch antenna elements. The microstrip patch antenna elements, configured in a linear array, facilitate a lower operating frequency, while the stacked patch antenna elements, placed atop the microstrip patch antenna elements, achieve a higher operating frequency. The stacked patch antenna elements are connected in series and oriented at a predefined angle of 90° relative to the microstrip patch antenna elements. A panel from the plurality of panels is arranged at a pre-defined angle of 90° relative to an adjacent panel from the plurality of panels for polarization diversity to obtain the multifunctional shared aperture 8N-port MIMO antenna system.

An antenna-based system for hyperthermia treatment of breast cancer, consisting of: a G-shaped microstrip patch antenna configured for operation at an ISM frequency of 434 MHz and having dimensions of 3.6 cm × 3.8 cm × 1.6 cm; an aluminum cavity chamber to accommodate the G-shaped microstrip patch antenna; a coaxial feed line configured to allow an impedance matching of 50 ohms to the G-shaped microstrip patch antenna; a bolus of deionized water configured to surround the aluminum cavity chamber, wherein the bolus of deionized water is further configured to serve as a cooling medium for controlling the skin surface temperature, and wherein the bolus of deionized water is further configured to reduce hotspots and improve the radiation efficiency of the G-shaped microstrip patch antenna; and A polyethylene film was positioned between the G-shaped microstrip patch antenna and the bolus of deionized water to prevent interference between the G-shaped microstrip patch antenna and a breast tissue phantom.

The application discloses an array antenna applied to three-dimensional multi-target arbitrary power distribution wireless energy transmission, and belongs to the field of wireless energy transmission. The array antenna comprises a transmitting antenna and a receiving antenna, and a plurality of transmitting antenna array units and a plurality of receiving antenna array units are arranged in the transmitting antenna and the receiving antenna respectively. In the transmitting antenna, the distribution of the plurality of transmitting antenna array units is divided into two layers, the transmitting antenna array units in each layer are arranged to form a circle, and an open three-dimensional space is formed. In the receiving antenna, the plurality of receiving antenna array units are distributed on two parallel planes, and the two planes are located at the center of the three-dimensional space formed by the transmitting antenna. The transmitting antenna array unit is a rectangular microstrip patch antenna. The array antenna can meet the application scene of three-dimensional multi-target arbitrary power distribution wireless power transmission.

The application discloses a library high-density book management system and a management method thereof, and belongs to the field of library management. The library high-density book management system comprises a multi-mode SAW sensing label, a reader-writer head terminal, and a regional controller. The reader-writer head terminal is arranged at the top center of each bookshelf unit at an interval of 3-5 meters. The reader-writer head terminal is composed of a small linear array of 4-8 microstrip patch antennas, generates high-frequency pulses, and receives reflected signals, and is used for accurately measuring echo arrival time and phase. The regional controller is arranged in each reading room or area, and is responsible for managing all reader-writer head terminals in the area. The regional controller is a controller with a built-in FPGA, and realizes real-time beam control and signal processing. The application realizes passive sensing of the physical state of books, and realizes high-precision positioning through a beam arrival time difference.

The invention discloses an ice layer thickness sensor based on a dual-frequency antenna and a measuring method, belongs to the technical field of radio frequency sensing, and aims to solve the problems of small measuring range, misjudgment in a transition area and poor environmental interference resistance of a single-frequency microwave phase detection method. The sensor comprises a metal shell, a radio frequency board, a core control board, a double-frequency microstrip patch antenna, a double-frequency signal generator, a power division circuit, an amplitude-phase detector and an algorithm processing module. The dual-frequency microstrip patch antenna adopts a transmitting-receiving integrated structure, a reference signal and an incident signal are separated through a power division circuit, a dual-path phase difference is extracted through an amplitude-phase detector, and an algorithm processing module is used for solving the thickness of an ice layer based on a bilinear interpolation algorithm in combination with a thickness-phase difference two-dimensional characteristic plane. Through dual-frequency signal physical cooperation and algorithm fusion, large-range, high-precision and high-robustness ice layer thickness non-contact detection is realized, and the method is suitable for real-time monitoring of scenes such as road ice layers and the like.

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

This invention discloses a miniaturized filtered circularly polarized microstrip patch antenna, comprising: an upper dielectric substrate and a lower dielectric substrate; a main radiating patch is printed in the middle region of the upper surface of the upper dielectric substrate; a first rectangular slot is provided on the main radiating patch; unequal-length cross-shaped patches and longitudinal rectangular parasitic patches are printed on the lower surface of the upper dielectric substrate; a short-circuit parasitic patch and a longitudinal grounded microstrip feed line are printed on the upper surface of the lower dielectric substrate; a ground plane is printed on the lower surface of the lower dielectric substrate; a second rectangular slot is formed at the upper left corner of the main radiating patch, and a protruding rectangular protrusion is provided at the upper right corner of the main radiating patch. This invention utilizes the advantages of the patch antenna's low profile and small size to achieve miniaturization, can generate three circularly polarized radiation frequencies to achieve broadband circular polarization performance, and can generate two radiation nulls to achieve bandpass filtering response.

The invention discloses a microstrip patch antenna working in a satellite communication ground receiving end frequency band, and belongs to the technical field of antennas. The antenna comprises a micro-strip radiation layer, a first dielectric substrate, an upper micro-strip feed network, a second dielectric substrate, a metal grounding plate, a third dielectric substrate and a lower micro-strip feed network which are tightly attached in sequence from top to bottom. The antenna disclosed by the invention works in a frequency band of 17.7 GHz-21.2 GHz, and in the frequency band of 17.7 GHz-21.2 GHz, parameters of S11 and S21 can be both lower than-10dB, and the axial ratio is lower than 2; the antenna adopts equal-amplitude double-path signal feed with the difference of 90 degrees, and has the advantages of small size, light weight, easy conformality, low cost and the like.

This invention relates to a miniature dual-frequency microwave anechoic chamber based on spatially distributed ultrathin absorbing materials. It includes a rigid cylindrical shell mounted on a support. An ultrathin dual-frequency electromagnetic wave absorbing unit and a transmitting antenna are attached to the inner wall of the rigid cylindrical shell. The ultrathin dual-frequency electromagnetic wave absorbing unit and the transmitting antenna are integrally formed, and the transmitting antenna is a microstrip patch antenna. This invention, through research on spatially distributed ultrathin electromagnetic wave absorbing materials, realizes a wavelength-scale miniature dual-frequency microwave anechoic chamber. The shape and size of the microwave anechoic chamber can be customized according to actual application requirements, and it is expected to be widely used in antenna measurement, microwave imaging, and other fields. This invention features low cost, simple construction, and portability.

The invention belongs to the technical field of fuze antennas, and particularly relates to a radiation enhancement design method of an electromagnetic metamaterial focusing array fuze antenna, which specifically comprises the following steps of: establishing a relationship between structural characteristics of an electromagnetic metamaterial focusing array and incident wave and scattering characteristics, and determining the overall size and combination mode of the focusing array; designing a fuze antenna comprising the focusing array; metal walls are additionally arranged on the two sides of the fuze antenna patch by using a metal electric wall method, and the fuze antenna is selected as a microstrip patch antenna for large-angle beam scanning; electrical performance requirements and radiation performance requirements of the fuze antenna are converted into antenna characteristic mode requirements; the size of each unit of the electromagnetic metamaterial focusing array is determined according to the working frequency requirement of the fuze antenna, the corresponding characteristic mode is calculated, and the characteristic mode assists in fuze antenna design.

This invention discloses a multi-band microstrip patch antenna, relating to the field of antenna technology. The multi-band microstrip patch antenna includes a rectangular patch antenna, a dielectric substrate, an air layer, a metal ground plane, and a coaxial feed line. The rectangular patch antenna is located on one side of the dielectric substrate, the metal ground plane is located on the other side, and the air layer is located between the dielectric substrate and the metal ground plane. The rectangular patch antenna includes multiple concentric rings, curved fractals, a curved flow, and a microstrip feed line. Curved fractals are applied to the outer ring of each concentric ring, and a magnetic cuboid is located on the rectangular patch antenna. Signals enter the multiple concentric rings and curved flow with curved fractals on the microstrip patch antenna via the coaxial feed line. Compared to existing antennas, the above-described multi-band microstrip patch antenna can achieve multi-band electromagnetic wave transmission and reception in the low-frequency band, and it has a simple structure, multiple functions, is easy to manufacture, and has low manufacturing costs.

The present application relates to a kind of portable dual-frequency microwave imaging darkroom, including hard cylindrical shell, hard cylindrical shell is installed on support, the geometric center of hard cylindrical shell is provided object to be measured, object to be measured is placed on two-dimensional rotating platform, double-frequency electromagnetic wave absorption unit is attached on the inner wall of hard cylindrical shell, double-frequency electromagnetic wave absorption unit, transmitting antenna and multiple receiving antennas are integrally formed, the transmitting antenna and receiving antenna are all using microstrip patch antenna, and radio frequency switch network controls the opening and shutdown of multiple receiving antennas.The present application uses ultrathin double-frequency electromagnetic wave absorption unit, can simultaneously realize near perfect absorption effect to electromagnetic wave from normal incidence direction and oblique incidence direction, and further constructs portable dual-frequency microwave imaging darkroom;With the help of the dual-frequency microwave imaging darkroom constructed, microwave imaging experiment based on inverse scattering principle can be measured on site, and is expected to be widely used in practical engineering application scenarios.

The invention discloses a small-size high-gain microstrip yagi antenna, and relates to the technical field of microwave communication, in particular to the microstrip antenna technology, which comprises a top metal patch layer, a middle dielectric substrate layer and a bottom metal grounding layer. The top metal patch layer comprises two rectangular reflection patches, a rectangular radiation patch and two rectangular guide patches, the two rectangular reflection patches are symmetrically distributed on the two sides of the microstrip line, and the radiation patch is connected with the feed network through the microstrip line; the radiation patch is provided with two rectangular grooves which are the same in size and are symmetrical, and the two rectangular guide patches are reduced in sequence. According to the design scheme of the application, the principles of the microstrip patch antenna and the yagi antenna are applied, and the antenna has high gain while keeping a small size, so that high-precision measurement of a target in a narrow space is realized.

The invention discloses a thermally driven liquid metal reconfigurable antenna which comprises an FR-4 substrate, a liquid metal channel, a temperature gradient plate, a PID temperature control module and a heat conduction substrate. A rectangular track groove is formed in the heat-conducting carrier plate and is internally provided with gallium-based alloy; the temperature gradient plate is arranged on the back side of the carrier plate, and a heating area of the tungsten / platinum heating wire covers the track groove; the PID temperature control module controls the voltage of connection between the MOS tube and the heating wire by detecting the temperature deviation, calculating the regulation quantity and outputting a control signal so as to control the temperature of the heating wire, and the temperature sensor is combined to form a temperature gradient so as to drive the liquid metal to move. The FR-4 substrate bears the microstrip patch antenna and the SMA connector, a left channel and a right channel of the antenna are symmetrical, and the performance of the antenna can be adjusted by driving liquid metal to flow.

The application relates to the field of antennas and provides a microstrip patch antenna and a manufacturing method, wherein the microstrip patch antenna comprises a substrate, a metal ground plate, a radiation patch, an E-shaped branch, a coaxial probe and a coaxial connector; the metal ground plate is arranged on the lower surface of the substrate; the radiation patch is arranged on the upper surface of the substrate; a groove is formed in the radiation patch, the E-shaped branch is placed in the groove, and the E-shaped branch and the radiation patch are located on the same layer; the coaxial connector is arranged on the lower surface of the substrate, the outer conductor of the coaxial connector is connected with the metal ground plate, and the inner conductor of the coaxial connector is connected with the E-shaped branch through the coaxial probe. The microstrip patch antenna provided by the application has a small feeding structure area and can realize dual polarization on a single radiation patch.

The invention discloses a novel radio frequency and soil energy collaborative acquisition device. The device comprises a back-fed microstrip patch antenna used for acquiring radio frequency energy; the vertically crossed plane type soil electrode is used for collecting soil energy; the collaborative acquisition circuit is used for collecting and transmitting environment energy; the energy acquisition chip is used for acquiring energy and performing DC-DC amplification; and the energy storage capacitor is used for storing energy. According to the invention, the collection of the environmental energy is realized, the radio frequency energy around the environment collected by the antenna and the soil energy collected by the soil electrode are transmitted to the energy storage capacitor through the energy collection chip by the collaborative collection circuit, the two collection modes coexist, and the environmental energy collection efficiency is greatly improved.

This invention belongs to the technical field of telecommunications, specifically to patch antennas. In particular, a patch antenna based on multiband aperiodic tessellations and the method for generating them are described. The proposed antenna has the advantages of supporting multiple frequencies / multiple bands, the band gain does not decrease (in fractals, bands have lower gain as more iterations are performed), the bands are not multiples of the main resonance, it is physically small, has good frequency band gain, and patterns that distribute radiation uniformly at almost all angles incident on the patch.

The invention discloses a low-profile annular slot coupled feeding microstrip patch antenna and an electronic device, mainly through annular slot coupled feeding and a grounding metal column mode, radiation current is mainly concentrated on the grounding metal column, and compared with a traditional patch antenna, the microstrip patch antenna has better omni-directivity. According to the main technical scheme, the microstrip patch antenna for low-profile annular slot coupled feeding comprises a patch, the patch comprises a center piece and an annular piece, the annular piece surrounds the periphery of the center piece, and an annular slot is formed between the annular piece and the center piece; the dielectric layer is located between the patch and the reference stratum; the feed probe is connected with the central sheet; and the grounding metal column is connected with the annular sheet and the reference ground layer. The invention is mainly used for radiation.

The invention discloses a high-selectivity broadband three-mode filtering microstrip patch antenna based on a snakelike slot. The antenna comprises a single-layer dielectric substrate, a square microstrip patch arranged on the upper surface of the substrate, and a grounding plate arranged on the lower surface of the substrate. The microstrip patch is fed through the coaxial probe; two snakelike slots with identical sizes are respectively etched on radiation edges on two sides of the patch, the two slots on the same side are symmetrically distributed on two sides of a feed axis, and the slots on the radiation edges on the two sides are mutually symmetrical in position and opposite in bending direction. Three resonance modes with similar radiation characteristics are excited in a passband by loading the symmetrical snakelike slots, and a radiation zero point is generated on each of the two sides of the passband, so that broadband response, stable radiation, high frequency selectivity and high out-of-band rejection are realized. Compared with a traditional square microstrip patch antenna, the square microstrip patch antenna has wider bandwidth and better frequency selectivity and out-of-band rejection capability under similar sizes, and has structural and performance advantages.

The invention relates to a high-bandwidth multilayer resonant microstrip patch antenna, in particular to the technical field of patch antennae, and comprises a grounding plate, the upper surface of the grounding plate is connected with a first dielectric substrate, the upper surface of the first dielectric substrate is provided with a main radiation patch, the top of the main radiation patch is provided with a matching layer, and the matching layer is provided with a second dielectric substrate. The top of the matching layer is provided with a second dielectric substrate, the top of the second dielectric substrate is provided with a parasitic radiation patch, the surfaces of the main radiation patch and the parasitic radiation patch are provided with frequency tuning elements, and the surface of the parasitic radiation patch is etched with a filtering module. Through coupling of the main radiation patch and the parasitic radiation patch of the multi-layer resonant structure, a foundation for remarkably improving the bandwidth is laid, the multi-layer design adopts a standard PCB or a lamination pressing process, miniaturization and batch manufacturing can be achieved, and through the superposition design of the multi-layer resonant structure and the matching layer, the bandwidth can be greatly improved. And compared with a conventional single-layer patch, the-10dB bandwidth is improved.

Systems and methods are described herein for providing a direct radiating antenna (DRA) for installation on a communication satellite. The DRA is a phased array of microstrip patch antennas implemented in a very compact profile on a planar substrate. Embodiments of array are implemented as an array of radiating element configurations, each having a microstrip radiating element (e.g., a square patch) coupled to a first side of the planar substrate, amplifiers coupled to a second side of the planar substrate, and filters (e.g., diplexers) coupled between the radiating elements and amplifiers. A thermal conduction layer (e.g., a graphoil or vapor chamber layer) is thermally coupled with the second side of the planar substrate, and a thermal radiation layer (e.g., an optical solar reflector) is thermally coupled with the thermal conduction layer.

The invention relates to a bandwidth-controllable double-frequency circular microstrip patch antenna, which comprises a dielectric substrate with a low dielectric constant and low loss, a grounding plate covering a metal layer on the bottom surface of the dielectric substrate, and a circular metal main radiation patch arranged at the circle center position of the top surface of the dielectric substrate, a first group of parasitic patches and a second group of parasitic patches are arranged around the periphery of the main radiation patch; the feed structure adopts a coaxial probe for feeding; the radius of the main radiation patch resonates in a TM11 mode and a TM01 mode at the same time and corresponds to a first frequency band and a second frequency band respectively. According to the invention, the TM11 and TM01 modes of the circular patch are ingeniously excited through a single feed point, dual-band work is realized, omnidirectional coverage is provided, and the requirements of communication between the unmanned aerial vehicle and a ground station in different directions are met.

The invention discloses a PE pipeline detection system and detection method based on a microstrip patch antenna array. According to the system, specific array antenna parameters and pipeline structure design are combined, and high-precision recognition and positioning of the internal defects of the pipeline are achieved. The microstrip patch antenna comprises a radiation patch, a dielectric substrate and a grounding plate. A 4 * 4 microstrip patch antenna array is adopted for the first time, non-contact detection is achieved through electromagnetic wave radiation and scattered echo analysis, and the problem of non-metal pipeline defect detection is solved. Different from ultrasonic detection, electromagnetic wave detection does not need a water or oil coupling medium, can be directly implemented on the outer wall of the pipeline, and is suitable for a field environment. Different from ray detection, the radiation safety problem does not exist, and the operation risk and cost are reduced. A compact antenna array with a single-end feed design is adopted, so that installation, carrying and pipeline welding seam area scanning are facilitated; the system is high in integration level, and can be combined with a signal source, a receiver and a data analysis module to form integrated equipment.

The invention discloses a low-profile single-layer broadband microstrip patch antenna, equipment and a radar detection system, and relates to the technical field of antennas. The driving patch is arranged on the dielectric substrate and is fed through the coaxial probe; the two parasitic patches are symmetrically arranged on the two sides of the driving patch; the two symmetrical coupling branches are led out from the open circuit end of the driving patch and are capacitively coupled to the two parasitic patches respectively; wherein the working wavelength of the driving patch and the parasitic patch is configured to be a half waveguide wavelength, dual-mode excitation is realized through capacitive coupling of the coupling branch knot, and a broadband antenna structure is formed. The two coupling branches are led out near the open circuit end of the driving patch to be in capacitive coupling with the left parasitic patch and the right parasitic patch respectively, the parasitic patches are symmetrically arranged, inductive impedance of the driving patch can be compensated, accordingly, resonant frequencies of the driving patch and the parasitic patches are debugged together, and the driving patch and the parasitic patches form a broadband in a dual-mode mode.

The invention discloses a frequency reconfigurable antenna based on liquid metal octagonal flow channel regulation and control. The frequency reconfigurable antenna mainly comprises a microstrip patch antenna substrate, an octagonal annular radiation patch, a graphene film and a liquid metal packaging structure. The packaging structure is composed of a micro-fluidic channel layer and a micro-fluidic cover plate, two octagonal annular micro-channels surrounding the radiation patch are arranged in the packaging structure, and liquid metal liquid drops and a NaOH electrolyte solution are injected into the micro-channels. According to the invention, the radiation structure and the electrical length of the antenna are dynamically adjusted by changing the position of the liquid metal droplet in the octagonal flow channel by using the excellent conductivity and fluidity of the liquid metal, so that the reconstruction of the working frequency within the ultra-wide range of 5.42 GHz to 17.5 GHz is realized. Compared with a traditional antenna, the antenna not only supports center frequency adjustment, but also can flexibly switch among seven different frequency bands, cover different communication frequency bands and reduce the number of antennas required by equipment, and a single multifunctional antenna replaces a plurality of single-function antennas, so that space is saved, system performance can be enhanced, and cost is reduced. The method is suitable for multi-frequency tuning requirements and cognitive radio systems in a complex electromagnetic environment.

This invention discloses a Ka-band high-gain broadband microstrip patch antenna, primarily addressing the challenges of existing Ka-band antennas in simultaneously achieving broadband bandwidth and high gain, as well as their complex structures. It employs a stacked structure of a double-layer dielectric substrate, comprising, from top to bottom, a radiating patch, a first dielectric substrate, a metal ground plane, a second dielectric substrate, and a microstrip feed line. The radiating patch is a butterfly-like structure formed by cutting a square patch as a base and loading an anti-interference plate. A cross-shaped slot, formed by the orthogonal superposition of two identical H-shaped slots, is formed on the metal ground plane. The microstrip feed line achieves electromagnetic coupling with the radiating patch through this slot. This invention, through the coordinated design of patch and slot feeding, broadens the relative bandwidth and increases the maximum gain within the Ka-band, achieving an excellent balance between wide impedance bandwidth and high radiation gain. It also boasts advantages such as simple structure, easy fabrication, low cost, and easy integration, making it suitable for 5G millimeter-wave and satellite communication systems.

The application discloses a low-profile single-layer broadband microstrip patch antenna, equipment and a radar detection system, and relates to the technical field of antennas.The technical scheme points of the application are as follows: a dielectric substrate; a driving patch arranged on the dielectric substrate and fed by a coaxial probe; two parasitic patches symmetrically arranged on the two sides of the driving patch; and two symmetric coupling branches led out from the open end of the driving patch and respectively capacitively coupled to the two parasitic patches; wherein the working wavelength of the driving patch and the parasitic patch is configured as one-half of the waveguide wavelength, the double-mode excitation is realized through the capacitive coupling of the coupling branches, and the broadband antenna structure is formed.The application leads out two coupling branches near the open end of the driving patch, respectively capacitively couples the left and right parasitic patches, and symmetrically arranges the parasitic patches, so that the inductive impedance of the driving patch can be compensated, the resonant frequencies of the driving patch and the parasitic patch are adjusted together, and the double-mode of the driving patch and the parasitic patch forms a broadband.

The invention discloses a vehicle-mounted communication and induction integrated antenna system scheme, and belongs to the technical field of intelligent network connection automobiles and wireless communication. The system comprises four independent sub-array modules (1, 2, 3 and 4) arranged at the top of a vehicle, wherein each module is composed of at least 6-8 broadband microstrip patch antenna units which are distributed in a non-uniform and sparse manner; the common radio frequency front end is connected with each module through a PIN diode switch matrix; the central controller (FPGA + ARM dual-core architecture) dynamically dispatches the working modes of the modules according to vehicle states (vehicle speed, steering angle and obstacle information) or user instructions, wherein the working modes include a communication priority mode (enabling the second module to execute communication), a sensing priority mode (enabling the fourth module to cooperatively construct an MIMO array to achieve target detection / distance measurement / speed measurement) and a mixed mode (partial communication + partial sensing). According to the invention, the space utilization rate is optimized through sparse arrangement, the modular design supports millisecond-level dynamic switching, channel state information (CSI) and Doppler frequency shift of multiplexing communication signals are realized to realize passive sensing, hardware redundancy and system power consumption are obviously reduced, and a high-integration and low-cost communication sensing fusion solution is provided for the intelligent networked automobile.

The utility model discloses a broadband miniaturized integrated GNSS antenna comprising a printed circuit board, an antenna substrate, a high-frequency radiation unit, a high-frequency feed probe, a low-frequency radiation unit, a low-frequency feed probe and a choke branch. The antenna base material is of a hollow structure and covers the printed circuit board; the high-frequency radiation unit is arranged on the upper surface of the antenna base material, and the high-frequency radiation unit is electrically connected with the printed circuit board through the high-frequency feed probe; the low-frequency radiation unit is arranged on the lower surface in the antenna base material, and the low-frequency radiation unit is electrically connected with the printed circuit board through the low-frequency feed probe; the choke branch is arranged on the side surface of the antenna substrate. According to the integrated GNSS antenna provided by the utility model, the combination of an air medium and a microstrip patch antenna is realized; on the basis of miniaturization, lightness, thinness and integration of the antenna, a GNSS full-frequency design scheme is realized, good signal receiving performance is ensured, and the antenna has a wide application prospect.

The invention discloses a microstrip patch phased-array antenna, and relates to the technical field of phased-array antennas, and the microstrip patch phased-array antenna comprises a plurality of microstrip patch antenna units which are arranged in a grid at equal intervals and a plurality of rectangular coupling branches. For a single microstrip patch antenna unit, the square radiation patch is located in the center of the upper surface of the first dielectric substrate, the coupling feed structure is located between the second dielectric substrate and the first dielectric substrate, and the two ends of the coupling feed structure are connected with the metal ground through the metal short circuit column and the metal feed column respectively for coupling feed. A rectangular coupling branch knot is arranged between every two antenna units, the distance between the branch knot and the two units is consistent, the branch knot and the square radiation patch are coplanar, and the long side of the branch knot is parallel to a connecting line of projection centers of the unit metal short circuit column and the feed column. According to the scheme, transverse coupling between antenna units can be enhanced, a multi-resonance mode can be excited, the problems that a microstrip patch phased array is narrow in bandwidth, unit mutual coupling is high during wide-angle scanning, impedance mismatching is serious, scanning blind areas are prone to occurring, and gain is reduced are effectively solved, and the antenna is suitable for scenes such as broadband radars.