CN117543185A

CN117543185A - Antenna enhancer

Info

Publication number: CN117543185A
Application number: CN202311510634.7A
Authority: CN
Inventors: 刁伟豪; 张志军; 周大为
Original assignee: Tsinghua University; Honor Device Co Ltd
Current assignee: Tsinghua University; Honor Device Co Ltd
Priority date: 2023-11-14
Filing date: 2023-11-14
Publication date: 2024-02-09
Anticipated expiration: 2043-11-14
Also published as: CN117543185B

Abstract

The application provides an antenna enhancer, which is used for electronic equipment, wherein the electronic equipment comprises an antenna and a nonmetal rear cover; the antenna comprises a first metal frame, wherein the first metal frame is provided with a feed point, and a gap is formed in the first metal frame; the antenna enhancer comprises a signal shielding component, a coupling component and a circularly polarized radiator; the antenna booster is mounted on top of the electronic device and forms the following fit with the electronic device: the signal shielding component is used for shielding radiation signals of the antenna; the coupling component is arranged on one side of the non-metal rear cover, and the orthographic projection of the coupling component on the non-metal rear cover is at least partially overlapped with the orthographic projection of the feed point on the non-metal rear cover; the coupling component does not contact the first metal frame; one end of the coupling component is connected with the circular polarized radiator; the circularly polarized radiator is disposed on an outer surface of the antenna booster. By adopting the antenna enhancer provided by the application, the communication capacity of the electronic equipment can be improved, and the electronic equipment can be ensured to maintain high-quality communication under a severe communication environment.

Description

Antenna enhancer

Technical Field

The application relates to the technical field of terminals, in particular to an antenna enhancer.

Background

In daily life, people often use electronic devices to communicate, but in some severe communication environments, the electronic devices have a communication blocking problem, that is, areas where communication signals are poor or blocked, and electronic devices (such as smartphones) often face communication troubles; the problem of unsmooth communication in emergency situations, namely, the unsmooth communication of the smart phone can threaten life in disaster or emergency rescue situations; a problem of unstable communication in outdoor activities, namely, unstable communication may cause trouble in outdoor exploration activities; the communication difficulty in the scientific detection task, namely in the scientific experiment or detection task, the reliability of communication is critical to the success of the task; problems with poor communication in vehicles, i.e., problems with failure to communicate during a vehicle, such as an aircraft, ship, or ocean. Mobile or cellular communications are limited in the above cases where satellite communications can solve the problem, but the ability of electronic devices to communicate with satellites is weak. Therefore, how to improve the communication capability between the electronic device and the satellite and ensure that the electronic device can maintain high-efficiency and high-quality communication under severe communication environment is a problem to be solved.

Disclosure of Invention

The embodiment of the application provides an antenna enhancer, which can improve the communication capacity of electronic equipment and satellites and ensure that the electronic equipment can maintain high-efficiency and high-quality communication under severe communication environments.

In a first aspect, embodiments of the present application provide an antenna booster applied to an electronic device, the electronic device including an antenna and a non-metallic rear cover; the antenna comprises a first metal frame, wherein the first metal frame is provided with a feed point, and a gap is formed in the first metal frame; the antenna enhancer comprises a signal shielding component, a coupling component and a circularly polarized radiator; the antenna booster is mounted on top of the electronic device and forms the following fit with the electronic device: the signal shielding component is used for shielding radiation signals of the antenna; the coupling component is arranged on one side of the non-metal rear cover, and the orthographic projection of the coupling component on the non-metal rear cover is at least partially overlapped with the orthographic projection of the feed point on the non-metal rear cover; the coupling component does not contact the first metal frame; the first end of the coupling component is open, and the second end of the coupling component is connected with the circular polarized radiator; the circular polarization radiator is arranged on the outer surface of the antenna enhancer; the top of the electronic device includes a first metal bezel.

In the embodiment of the application, the signal shielding component can be used for isolating initial radiation energy of linear polarization radiation of an antenna of the electronic equipment; the coupling component is coupleable with the electronic device and acquires the initial radiant energy and directs the initial radiant energy to the circularly polarized radiator; the circular polarization radiator can be used for carrying out circular polarization radiation according to initial radiation energy, so that the linear polarization radiation emitted by the electronic equipment is converted into circular polarization radiation, a stable link can be provided in the process of communication with a satellite, the capability of improving multipath distortion and polarization mismatch is achieved, the communication capability of the electronic equipment and the satellite can be further improved, and the electronic equipment can be ensured to maintain high-efficiency and high-quality communication under a severe communication environment.

In some embodiments, the signal shielding member comprises a first metal plate; the signal shielding part shields the gap, specifically includes: the first metal sheet at least shields the slit.

In this embodiment, the antenna of the electronic device may be disposed on the top frame, and the first metal frame and the second metal frame may be spaced by a gap, and the first metal frame and the second metal frame may be two radiators 233 of the antenna. When the first metal frame of the electronic device polarizes the radiation energy online, the first metal frame at the top of the electronic device, that is, the periphery of the top metal antenna radiator 233 of the electronic device, forms an obvious electric field, which indicates that the antenna has obvious resonance phenomenon. Therefore, a metal plate can be placed on the gap, and the metal plate at least completely covers the gap, so that the resonance of the antenna can be destroyed, and the radiation of the antenna can be effectively restrained.

In some embodiments, the signal shielding member covers the first metal bezel.

In this embodiment of the application, the signal shielding component not only covers the gap, but also covers the first metal frame to can restrain the antenna to produce resonance better, the better signal shielding effect is also.

In some embodiments, the front projection of the coupling component on the non-metallic back cover completely covers the front projection of the feed point on the non-metallic back cover.

In this embodiment of the present application, the grounding element of the electronic device may be located on a side of the back plate facing away from the coupling component, where the front projection of the coupling component on the non-metal back cover and the front projection of the feeding point on the non-metal back cover at least partially overlap, so that the coupling component and the grounding element form an open transmission line. In other words, the coupling element and the ground element (e.g., the floor of the handset) form an open transmission line that is approximately one-quarter wavelength long, so that the coupling element can resonate in one-quarter wavelength mode to couple energy. Because the energy at the feed point is concentrated most, the front projection of the coupling component on the nonmetal rear cover completely covers the front projection of the feed point on the nonmetal rear cover, the coupling component can better couple the energy at the feed point, the satellite communication capacity of the electronic equipment is improved, and the electronic equipment can maintain high-efficiency and high-quality communication under a severe communication environment.

In some embodiments, the coupling member includes a first portion, a second portion, and a third portion connected in sequence along a length of the coupling member; wherein the first part and the second part are both trapezoidal metal, and the third part is rectangular metal.

In this embodiment of the present application, when the coupling component is close to the feeding point of the electronic device, and the front projection of the coupling component on the non-metal rear cover and the front projection of the feeding point on the non-metal rear cover are at least partially overlapped, an open transmission line may be formed between the coupling component and the grounding element (such as the floor of the mobile phone), that is, the coupling component and the grounding element form an open transmission line with a length of about a quarter wavelength, where the length of the open transmission line may be determined by a path through which a current flows on the coupling component, and the current flows along a metal edge of the coupling component, so that the coupling component is composed of a trapezoidal metal and a rectangular metal plate, and the vertical length of the coupling component may be shortened.

In some embodiments, the longer the length of the coupling component, the lower the operating band of the antenna booster; the shorter the length of the coupling element, the higher the operating band of the antenna booster.

In this embodiment of the present application, when the coupling component is close to the feeding point of the electronic device, and the front projection of the coupling component on the non-metal rear cover and the front projection of the feeding point on the non-metal rear cover are at least partially overlapped, an open transmission line may be formed between the coupling component and the grounding element, that is, the coupling component and the grounding element form an open transmission line with a length of about a quarter wavelength, where the longer the length of the open transmission line, the lower the resonant frequency band of the open transmission line, and the longer the length of the open transmission line, the higher the resonant frequency band of the open transmission line. Further, as the length of the open-circuit transmission line is related to the length of the coupling component, the working frequency band of the antenna enhancer is lower when the length of the coupling component is longer, and the working frequency band of the antenna enhancer is higher when the length of the coupling component is shorter, so that the coupling components with different lengths can be selected according to application scenes, the communication capability of the electronic equipment and the satellite is improved, and the electronic equipment can be ensured to maintain high-efficiency and high-quality communication under severe communication environments.

In some embodiments, a first standing wave current is formed on the coupling member, and a peak current value of the second end of the coupling member is greatest, and a peak current value of the first end of the coupling member is smallest; the electronic device further comprises a Printed Circuit Board (PCB) connected to the feeding point through the feeding component, the coupling component forms a second standing wave current on the projection area of the PCB, and the second standing wave current is opposite to the first standing wave current in phase.

In this embodiment, when the coupling component is close to the feeding point of the electronic device, and the front projection of the coupling component on the non-metal rear cover and the front projection of the feeding point on the non-metal rear cover are at least partially overlapped, an open transmission line may be formed between the coupling component and the grounding element, that is, the coupling component and the grounding element form an open transmission line with a length of about a quarter wavelength. Further, a standing wave current is formed on the coupling member and the printed circuit board PCB, and the standing wave current on the coupling member is opposite in phase to the standing wave current on the printed circuit board PCB, thereby generating resonance, and the coupling member can couple energy at the feeding point to the circular polarized radiator. In addition, since the second end of the coupling member is closer to the feeding point, energy is more concentrated, the current peak is maximum, and the current peak at the first end of the coupling member is minimum. At the same time, since the current of the quarter-wave resonance formed on the coupling member is greatest at the second end, it has an effect of helping the coupling of energy so that energy can be coupled from the feeding point to the circularly polarized radiator.

In some embodiments, the coupling member is parallel to the non-metallic back cover.

In the embodiment of the application, when the coupling component is parallel to the nonmetal rear cover, the coupling component and the grounding piece form the open transmission line with the length of about one quarter wavelength, and the open transmission line is related to the horizontal length of the coupling component, so that the coupling component can be used maximally, and the design cost is saved.

In some embodiments, the antenna booster further comprises a mounting sleeve provided with a mounting hole extending through the mounting sleeve in a height direction of the antenna booster, the signal shielding member being fixedly connected to the mounting sleeve, the coupling member extending at least partially into the mounting hole.

In this application embodiment, antenna booster still includes the installation cover, and signal shielding part fixed connection installation cover, coupling component at least partially stretches into in the mounting hole of installation cover to can fix signal shielding part and coupling component's positional relationship better, also can fix antenna booster on electronic equipment better.

In some embodiments, the mounting hole includes a first hole side to which the coupling member is attached.

In this application embodiment, the mounting hole includes first hole side, and coupling part laminating is in first hole side, when antenna booster and electronic equipment, can prevent coupling part collision electronic equipment's back.

In some embodiments, the coupling member includes a first coupling surface and a second coupling surface, the first coupling surface facing the first aperture side; the second coupling surface is fixed with an insulating layer, and the insulating layer covers all areas of the second coupling surface.

In this application embodiment, the first coupling face of coupling part can laminate in first hole side, and sets up the insulating layer at coupling part's second coupling face, when the electronic equipment is located to the installation cover, can prevent coupling part collision electronic equipment's frame. When the mounting sleeve is completely sleeved on the electronic equipment, the insulating layer can prevent the coupling component from contacting the frame, namely, the coupling component is prevented from contacting the radiator.

In some embodiments, a circularly polarized radiator includes a first substrate, a second substrate, a circularly polarized patch, a feed network, and a probe; the first substrate and the second substrate are arranged in a lamination manner along the height direction of the antenna enhancer, and a space is reserved between the first substrate and the second substrate; the circularly polarized patch is fixed on the surface of the first substrate, which is away from the second substrate, and the feed network comprises a starting end and a tail end; the probes are arranged in the intervals, one ends of the probes are fixedly connected with the surface of the first substrate facing the second substrate, and the other ends of the probes are fixedly connected with the tail ends; the signal shielding component is fixed on the surface of the second substrate, which is away from the first substrate, and one side of the signal shielding component, which is away from the second substrate, is fixedly connected with the mounting sleeve; the coupling component is arranged on one side of the second substrate, which is away from the first substrate, penetrates through the first substrate and is connected to the starting end.

In the embodiment of the application, the first substrate and the second substrate are connected by the probe and kept in a spaced state. The coupling component can be arranged on one side of the second substrate, which is away from the first substrate, and one end of the coupling component passes through the perforation and is fixed with the starting end of the feed network. The coupling component and the signal shielding component are separated by the avoidance region, so that energy can be transmitted from the coupling component to the feed network of the second substrate.

In some embodiments, the mounting sleeve includes a first mounting face facing the signal shielding member, the mounting hole extending through the first mounting face; the signal shielding component comprises a first shielding surface and a second shielding surface, the first shielding surface and the second shielding surface are oppositely arranged along the height direction of the antenna enhancer, the first shielding surface is fixedly connected with the surface of the second substrate, which is away from the first substrate, and the second shielding surface is fixedly connected with the first mounting surface.

In this application embodiment, first shielding face and second shielding face set up in opposite directions, and first shielding face fixed connection second base plate deviates from the surface of first base plate, and second shielding face fixed connection first installation face to ensure when the complete cover of installation cover locates the cell-phone, the gap on the metal frame of signal shielding part contact electronic equipment, thereby realize signal shielding effect.

Drawings

In order to more clearly describe the technical solutions in the embodiments or the background of the present application, the following description will describe the drawings that are required to be used in the embodiments or the background of the present application.

Fig. 1 is a schematic structural diagram of an electronic device assembly according to an embodiment of the present application.

Fig. 2 is a schematic diagram of the structure of the mobile phone of the electronic device assembly shown in fig. 1.

Fig. 3 is a schematic diagram of a split structure of the mobile phone shown in fig. 2.

Fig. 4 is a partial structural schematic diagram of the housing of the handset shown in fig. 3.

Fig. 5 is a conceptual diagram of a design of an antenna booster according to an embodiment of the present application.

Fig. 6 is a schematic diagram of a split structure of an antenna booster of the electronic device assembly shown in fig. 1.

Fig. 7 is a schematic diagram of an operation principle of an antenna enhancer according to an embodiment of the present application.

Fig. 8 is a schematic diagram illustrating an effect of a signal shielding component according to an embodiment of the present application.

Fig. 9 is a schematic structural view of a coupling part of the antenna booster shown in fig. 6.

Fig. 10 is a schematic diagram of current distribution on a coupling component and a printed circuit board PCB according to an embodiment of the present application.

Fig. 11 is a schematic diagram of an electric field and a magnetic field near a top frame after a shielding component is added according to an embodiment of the present application.

Fig. 12 is a schematic view illustrating an effect of a coupling component according to an embodiment of the present application.

Fig. 13 is a schematic diagram of reflection and transmission coefficients of a coupling component according to an embodiment of the present application.

Fig. 14 is a schematic diagram of reflection coefficients and transmission coefficients of coupling components with different lengths according to an embodiment of the present application.

Fig. 15 is an equivalent circuit schematic diagram of the working principle of a coupling component according to an embodiment of the present application.

Fig. 16 is a schematic diagram of a geometry of an antenna using total port feeding according to an embodiment of the present application.

Fig. 17 is a schematic diagram of a square circularly polarized patch according to an embodiment of the present application.

Fig. 18 is a schematic geometric diagram of a circularly polarized patch according to an embodiment of the present application.

Fig. 19 is a partial structural schematic diagram of the antenna booster shown in fig. 6.

Fig. 20 is another partial structural schematic diagram of the antenna booster shown in fig. 6.

Fig. 21 is a schematic view of still another partial structure of the antenna booster shown in fig. 6.

Fig. 22 is a schematic structural view of a mounting sleeve of the antenna booster shown in fig. 6.

Fig. 23 is a schematic view of still another partial structure of the antenna booster shown in fig. 6.

Fig. 24 is a schematic geometric diagram of an antenna enhancer according to an embodiment of the present application.

Fig. 25 is a schematic partial structural cross-sectional view of the electronic device assembly shown in fig. 1.

Fig. 26 is a schematic cross-sectional view of another partial structure of the electronic device assembly shown in fig. 1.

Fig. 27 is a partial schematic structural view of the electronic device assembly shown in fig. 1.

Fig. 28 is a schematic cross-sectional structure of fig. 27.

Fig. 29 is a schematic diagram of an assembly relationship between an antenna enhancer and a mobile phone according to an embodiment of the present application.

Detailed Description

Embodiments of the present application are described below with reference to the accompanying drawings in the embodiments of the present application.

The terms "first," "second," "third," and "fourth" and the like in the description and in the claims of this application and in the drawings, are used for distinguishing between different objects and not for describing a particular sequential order. Furthermore, the terms "comprise" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those listed steps or elements but may include other steps or elements not listed or inherent to such process, method, article, or apparatus.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the present application. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of skill in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments.

In the description of the embodiments of the present application, it should be noted that, unless explicitly specified and limited otherwise, the term "connected" is to be interpreted broadly, and for example, "connected" may be either detachably connected or non-detachably connected; may be directly connected or indirectly connected through an intermediate medium. Wherein, "fixedly connected" means that the relative positional relationship is unchanged after being connected with each other. It will be appreciated that when part a is fixedly connected to part C by part B, a change in the relative positional relationship due to deformation of parts a, B and C themselves is permitted.

Referring to fig. 1, an embodiment of the present application provides an electronic device assembly 1000, where the electronic device assembly 1000 includes an electronic device and an Antenna Booster 100 (AB), and the Antenna Booster 100 may be detachably connected to the electronic device. The antenna booster 100 may be used to enhance the communication performance of electronic devices and satellites, and may be used in a variety of situations, such as in areas where communication signals are poor or difficult to cover, for example, remote areas, mountainous areas, or deserts, where the antenna booster 100 may provide a reliable communication connection; under the disaster or emergency rescue condition, the antenna enhancer 100 can ensure that the electronic equipment can keep high-efficiency communication with the satellite, and provide timely rescue information; the antenna booster 100 is suitable for outdoor exploration lovers, and can ensure that reliable communication can be maintained in field activities, whether in mountainous regions, forests or other field environments; the antenna booster 100 may also be applied to scientific experimentation or detection tasks to ensure that communication with ground stations is maintained also in hard-to-reach places; the antenna booster 100 is also suitable for use in vehicles, such as aircraft, watercraft or ocean going craft, to provide more stable and efficient communication services. Electronic devices include, but are not limited to, tablet phones (cellphones), folding phones, notebook computers (notebook computer), tablet computers (tablet personal computer), laptop computers (laptop computers), personal digital assistants (personal digital assistant), or wearable devices (webbinded devices), among others. The electronic device will be described below as the mobile phone 200.

For convenience of description, the width direction of the mobile phone 200 is defined as the X-axis direction, the length direction of the mobile phone 200 is defined as the Y-axis direction, the thickness direction of the mobile phone 200 is defined as the Z-axis direction, and the X-axis direction, the Y-axis direction and the Z-axis direction are perpendicular to each other.

Referring to fig. 2 and 3, in some embodiments, the mobile phone 200 includes a display 210, a housing 220, an antenna 230, and a circuit board 240, where the display 210 is mounted to the housing 220. The circuit board 240 may be a main circuit board 240 of the mobile phone 200, and a radio frequency chip (not shown) is integrated on the circuit board 240, and the circuit board 240 may also be referred to as a printed circuit board PCB.

In some embodiments, the display 210 has a touch function, where the display 210 includes a display surface and a mounting surface, the display surface and the mounting surface are disposed opposite to each other, the mounting surface of the display 210 faces the housing 220, and the display surface is used for displaying characters, images, videos, and the like. The display surface of the display screen 210 faces away from the housing 220. The display 210 may specifically be any of the following: an organic light-emitting diode (OLED) display, an active-matrix organic light-emitting diode (AMOLED) display, a mini-led (mini organic light-emitting diode) display, a micro-led (micro organic light-emitting diode) display, a micro-organic led (micro organic light-emitting diode) display, a quantum dot led (quantum dot light emitting diodes, QLED) display.

In some embodiments, the housing 220 includes a middle frame 221 and a non-metallic back cover 222, wherein the middle frame 221 includes a middle plate 223 and a rim 224, and the middle plate 223 is merely exemplary in fig. 3. In practice the middle plate 223 may have other shapes. The rim 224 surrounds the middle plate 223 and is connected to the middle plate 223, and the middle plate 223 and the rim 224 enclose a receiving chamber 225, and the receiving chamber 225 is used to receive the circuit board 240 and a part of the devices of the antenna 230. A non-metal rear cover 222 is fixed to one side of the middle frame 221, and the non-metal rear cover 222 may close the receiving chamber 225. The display screen 210 is mounted to the side of the bezel 221 facing away from the non-metallic rear cover 222. The middle frame 221 may be made of conductive metal, and the non-metal rear cover 222 may be made of non-conductive metal such as plastic.

A portion of the middle plate 223 may constitute the ground 237 of the cellular phone 200, and in particular, a portion of the middle plate 223 for forming the ground 237 may be made of metal.

Referring to fig. 4, the antenna 230 may include a feeding point 231, a feeding protrusion 232, and a radiator 233, the feeding point 231 and the feeding protrusion 232 being disposed in the receiving cavity 225. In some embodiments, the antenna 230 may be a top metal bezel antenna (Top Metal Frame Antenna, TMFA). A portion of the radiator 233 is located inside the receiving chamber 225 and another portion of the radiator 233 is located outside the receiving chamber 225. The radiator 233 may be a part of the frame 224, where the radiator 233 includes a first radiating surface 234, a second radiating surface 235, and a third radiating surface 236, where the first radiating surface 234 and the third radiating surface 236 are opposite to each other along the Y-axis direction, the second radiating surface 235 is connected between the first radiating surface 234 and the third radiating surface 236, the first radiating surface 234 and the second radiating surface 235 may both be a part of an outer surface of the mobile phone 200, and the second radiating surface 235 is located inside the housing 220 and is used to form a part of a cavity wall surface of the accommodating chamber 225. The first radiating surface 234 and the second radiating surface 235 are each parallel to a plane formed by the X-axis and the Z-axis, and the third radiating surface 236 is parallel to a plane formed by the X-axis and the Y-axis. The radiator 233 may specifically include a first radiating portion 250 and a second radiating portion 260, where the first radiating portion 250 may be formed of a portion of the frame 224 (may also be referred to as a first metal frame), and the second radiating portion 260 may be formed of another portion of the frame 224 (may also be referred to as a second metal frame), and a gap is provided between the first radiating portion 250 and the second radiating portion 260. A portion of the first, second and third radiating surfaces 234, 235, 236 are each located on the first radiating portion 250, and another portion of the first, second and third radiating surfaces 234, 235, 236 are each located on the second radiating portion 260. The first radiating portion 250 may be an F-type antenna (IFA), and the second radiating portion 260 may be a parasitic branch.

In some embodiments, the feeding protrusion 232 is disposed inside the accommodating chamber 225, the feeding protrusion 232 may be integrally formed with the radiator 233, and the feeding protrusion 232 may be fixed to the radiator 233 by welding or the like. The feeding protrusion 232 may protrude from the third radiation surface 236. The feeding protrusion 232 may be a rectangular block, or may be a square block, a triangular block, or the like, which is not limited in this embodiment.

In some embodiments, the feeding point 231 may be a feeding spring or a feeding spring. One end of the feeding point 231 is connected to the radio frequency chip, the other end of the feeding point 231 is connected to the feeding protrusion 232, the feeding protrusion 232 is connected to the first radiating portion 250 of the radiator 233, so that signals emitted by the radio frequency chip can be sequentially transmitted to the radiator 233 through the feeding point 231 and the feeding protrusion 232, the radiator 233 radiates out the signals, and signals received by the radiator 233 can be sequentially transmitted to the radio frequency chip through the feeding protrusion 232 and the feeding point 231, so that the communication function of the mobile phone 200 is achieved.

In some embodiments, the first radiating portion 250 is provided with a feeding point 231.

In some embodiments, the antenna feed is disposed on a printed circuit board PCB, and the feed point 231 is connected to the feed via a coaxial line or a feed spring.

As shown in fig. 5, fig. 5 is a conceptual diagram illustrating a design of an antenna booster 100 according to an embodiment of the present application, where the antenna booster 100 may include a signal shield in contact with an antenna of a mobile phone 200, and the signal shield may be used to block initial energy radiation of antenna linear polarization (Linearly Polarized, LP) radiation; a miniature coupler close to the metal frame antenna can be also arranged for effectively coupling total reflection energy; a feed network 70 connecting the coupling structure to a circularly polarized (Circularly Polarized, CP) patch may also be provided to direct energy to the circularly polarized patch 60 for circularly polarized radiation, thereby providing the feature of significantly improving the communication performance of the handset 200 with satellites in a particular frequency band.

In particular, referring to fig. 6, in some embodiments, the antenna booster 100 may include a signal shielding part 10, a coupling part 20, and a circularly polarized radiator 30. The signal shielding member 10 and the coupling member 20 may each be a sheet-like structure made of metal. Wherein the signal shielding member 10 is operable to isolate an initial radiation energy of the linear polarized radiation of the antenna of the electronic device; a coupling part 20 operable to couple with the electronic device and acquire the initial radiant energy and guide the initial radiant energy to the circularly polarized radiator 30; the circular polarized radiator 30 may be used for circular polarized radiation based on the initial radiation energy.

As shown in fig. 7, the working principle of the antenna booster 100 provided in the present application may be briefly summarized as: blocking the primary energy radiation and redirecting it to the circularly polarized radiator 30 to enhance the circularly polarized radiation. The detailed description is as follows: first, the TMFAs can operate independently, producing LP radiation. Second, the energy initially fed to the TMFA will be totally reflected by the blockage. Further, the blocked energy may be coupled and guided by the coupling structure. Finally, by connecting the coupling structure to the CP radiator, energy may be redirected to the CP radiator to produce enhanced CP radiation, thereby completing the antenna booster 100.

Referring to fig. 6, the signal shielding member 10 may include a first shielding surface 11 and a second shielding surface 12, the first shielding surface 11 and the second shielding surface 12 being opposite in a thickness direction of the signal shielding member 10, and the thickness direction of the signal shielding member 10 being a Y-axis direction.

In some embodiments, the signal shielding member 10 includes a first metal plate; the signal shielding member 10 shields the slit, and the first metal sheet shields at least the slit.

Specifically, the antenna 230 of the electronic device may be disposed on the top frame 224, and the first metal frame and the second metal frame may be two radiators 233 of the antenna 230. When the first metal frame of the electronic device polarizes the radiation energy online, a significant electric field is formed around the first metal frame at the top of the electronic device, that is, the top metal antenna radiator 233 of the electronic device, which indicates that there is a significant resonance phenomenon of the antenna 230. Therefore, a metal plate can be placed on the gap, and the metal plate at least completely covers the gap, so that the resonance of the antenna can be destroyed, and the radiation of the antenna can be effectively restrained.

In some embodiments, the signal shielding member 10 covers the first metal bezel.

Specifically, the signal shielding member 10 covers not only the slit but also the first metal frame, so that the resonance of the antenna 230 can be better suppressed, and the signal shielding effect is better.

Referring to fig. 8, the operation of the signal shielding member 10 will be exemplarily described with reference to fig. 8. Fig. 8 is a schematic diagram showing the effect of a signal shielding component 10 provided in an embodiment of the present application, and the main operation mechanism of the antenna booster 100 involves redirecting the energy originally used for the Top Metal Frame Antenna (TMFA) to a Circularly Polarized (CP) radiator. To achieve this redirection, the initial radiation must first be suppressed. The electric field distribution of TMFA in the xoy plane and the current distribution on the top bezel 224 at 2.1GHz are depicted in FIG. 8 (a) and FIG. 8 (c). There is a strong electric field between the supply IFA (i.e. the first radiating portion 250) and the parasitic branch (i.e. the second radiating portion 260), indicating that there is a significant resonance of the TMFA. By placing a metal sheet (i.e. signal shielding member 10) connecting the supply IFA and the parasitic branches, such resonances can be destroyed, thereby effectively suppressing the original radiation. The electric field distribution of the TMFA in the xoy plane and the surface current of the blocked TMFA are shown in FIG. 8 (b) and FIG. 8 (d). It can be observed that the field strength of TMFA with blocking is significantly weaker. The reflection coefficient of a TMFA with different shaped obstructions is shown in FIG. 8 (e), and a schematic diagram of the various obstructions in the TMFA is shown in FIG. 8 (e), where the power supply IFA and parasitic branches are connected together and the original radiant energy is totally reflected.

Referring to fig. 9, the coupling member 20 includes a first coupling surface 21 and a second coupling surface 22, and the first coupling surface 21 and the second coupling surface 22 are opposite in a thickness direction of the coupling member 20, the thickness direction of the coupling member 20 being a Z-axis direction.

In some embodiments, the coupling member 20 includes a first portion, a second portion, and a third portion that are sequentially connected along the length of the coupling member 20; wherein the first part and the second part are both trapezoidal metal, and the third part is rectangular metal.

Specifically, when the coupling member 20 is close to the feeding point 231 of the electronic device, and the front projection of the coupling member 20 on the non-metal rear cover 222 and the front projection of the feeding point 231 on the non-metal rear cover 222 are at least partially overlapped, an open transmission line may be formed between the coupling member 20 and the grounding member 237, that is, the coupling member 20 and the grounding member 237 form an open transmission line having a length of about one-fourth wavelength, the length of the open transmission line may be determined by a path of a current flowing on the coupling member 20, and the current flows along a metal edge of the coupling member 20, so that the coupling member 20 is composed of a trapezoid metal and a rectangular metal plate, and the vertical length of the coupling member 20 may be shortened.

In some embodiments, the longer the length of the coupling element 20, the lower the operating frequency band of the antenna booster 100; the shorter the length of the coupling member 20, the higher the operating frequency band of the antenna booster 100.

Specifically, when the coupling member 20 is close to the feeding point 231 of the electronic device, and the front projection of the coupling member 20 on the non-metal rear cover 222 and the front projection of the feeding point 231 on the non-metal rear cover 222 at least partially overlap, an open transmission line may be formed between the coupling member 20 and the grounding member 237, that is, the coupling member 20 and the grounding member 237 form an open transmission line with a length of about one quarter wavelength, where the longer the length of the open transmission line, the lower the resonant frequency of the open transmission line, and the shorter the length of the open transmission line, the higher the resonant frequency of the open transmission line. Further, since the length of the open transmission line is related to the length of the coupling component 20, the longer the length of the coupling component 20, the lower the operating frequency band of the antenna booster 100, the shorter the length of the coupling component 20, the higher the operating frequency band of the antenna booster 100, the coupling components 20 with different lengths can be selected according to the application scenario, the communication capability of the electronic device and the satellite is improved, and the electronic device can maintain high-efficiency and high-quality communication under severe communication environment.

In some embodiments, a first standing wave current is formed on the coupling member 20, and a peak current value at the second end of the coupling member 20 is maximum, and a peak current value at the first end of the coupling member 20 is minimum; the electronic device further includes a printed circuit board PCB connected to the feeding point 231 through a feeding part, and the coupling part 20 forms a second standing wave current on a projection area of the printed circuit board PCB, and the second standing wave current is opposite in phase to the first standing wave current.

Specifically, referring to fig. 10, fig. 10 is a schematic diagram of current distribution on a coupling component 20 and a printed circuit board PCB according to an embodiment of the present application, when the coupling component 20 is close to a feeding point 231 of an electronic device, and a front projection of the coupling component 20 on a non-metal rear cover 222 and a front projection of the feeding point 231 on the non-metal rear cover 222 at least partially overlap, an open transmission line may be formed between the coupling component 20 and a grounding member 237, that is, the coupling component 20 and the grounding member 237 form an open transmission line with a length of about a quarter wavelength. Further, a standing wave current is formed on both the coupling member 20 and the printed circuit board PCB, and the standing wave current on the coupling member 20 is opposite in phase to the standing wave current on the printed circuit board PCB, thereby generating resonance, and the coupling member 20 can couple energy at the feeding point 231 to the circular polarized radiator 30. Further, since the energy is more concentrated at the second end of the coupling part 20 closer to the feeding point 231, the current peak value of the second end of the coupling part 20 is maximum and the current peak value of the first end of the coupling part 20 is minimum. Meanwhile, since the current of the quarter-wavelength resonance formed on the coupling member 20 is maximized at the second end, it has an effect of helping the coupling of energy so that the energy can be coupled from the feeding point 231 to the circularly polarized radiator 30.

In some embodiments, the coupling member 20 is parallel to the non-metallic back cover 222.

Specifically, when the coupling member 20 is parallel to the nonmetallic rear cover 222, an open transmission line having a length of about one-fourth wavelength formed by the coupling member 20 and the ground 237 is related to the horizontal length of the coupling member 20, so that the coupling member 20 can be maximally used, and design costs can be saved.

Referring to fig. 11, 12, 13, 14, 15 and 16, the operation of the coupling member 20 will be exemplarily described with reference to fig. 11. Fig. 11 is a schematic diagram of an electric field and a magnetic field near a top frame after a shielding component is added, and it is important to design a proper path to redirect reflected energy smoothly in this application. In order to efficiently guide these energies, an intensive study of the field distribution of the blocked TMFA is required. The distribution of the vector magnetic field (i.e., H field) of the TMFA in the plane parallel to the top frame and the distribution of the vector electric field (E field) in the plane perpendicular to the top frame are shown in fig. 11 (b) and 11 (c). The planar position of the field distribution is shown in fig. 11 (a). Obviously, the H field circulates around the feed point 231, while the E field is directed from ground (i.e., the ground 237) to the protruding portion.

Based on the above, the near-field distribution near the feeding point 231 near the blocked TMFA appears in the distribution of the monopole. When a resonant length monopole is placed near the feed point 231, it aids in the coupling of energy. Thus, the coupling member 20 may be implemented in the form of a monopole coupler. As shown in fig. 12 (a) and 12 (b), a Monopole Coupler (MC) may be placed directly above the feeding point 231, and the distance between the MC and the top metal bezel may be dcm=0.2 mm. The distance between the central axis of the MC and the side of the phone 200 may be lcm=17 mm. A port (port 2) was introduced between the microstrip line and ground to observe the efficiency of the energy redirection. The magnetic field and electric field distribution in the same plane as in fig. 11 (a) are plotted in fig. 12 (c) and fig. 12 (d). The complex current amplitude distribution across MC and metal frames is illustrated in fig. 12 (e) and 12 (f). As shown in fig. 12 (c), 12 (e) and 12 (f), the H field surrounding the feeding point 231 also surrounds the MC, thereby exciting the current on the MC. The MC does not radiate but is able to efficiently couple energy due to its proximity to the ground of the handset 200. As shown in fig. 12 (d), the E-field is mainly established between the MC and the cell phone 200, forming a two-conductor transmission line, resulting in poor radiation effect of the MC. Since the input impedance of the monopole near the parallel metal plate is low, the port impedance of the port 2 is set to 13 ohms. The reflection and transmission coefficients are plotted in fig. 13. It can be seen that in the frequency band of 1.94GHz to 2.37GHz, |S11| and |S21| are both below-10 dB, and |S21| is above-1 dB in the same frequency band. Thus, it can be concluded that the energy redirection efficiency is high.

Referring to fig. 14, fig. 14 (a) and 14 (b) show reflection coefficients and transmission coefficients of different lengths lm of the lower portion of the coupling member 20. It can be seen that the range of the effective energy coupling band (i.e., open circuit transmission line) moves with the variation of lm, indicating that the coupling band is related to the length of MC. The S-parameters of an unblocked TMFA with a different ground point Wc6 are shown in fig. 14 (c) and the S-parameters of a TMFA with a coupling structure are shown in fig. 14 (d). The original operating band of the TMFA moves up and down with the change in Wc6 while the coupling band slightly changes. Thus, the coupling band is primarily determined by the length of the MC. This is because the MC must resonate to couple energy. The MC is located at the ground of the handset 200 so that it forms an open transmission line of approximately one quarter wavelength in length. Thus, MC may resonate in a quarter wavelength mode to couple energy. On the other hand, by connecting the supply IFA with the parasitic branch, the resonance of the TMFA is completely destroyed, so that the blocked TMFA is equivalent to a reactive load. The change in the ground position of the supply IFA only changes the loading effect and thus has little effect on the coupling band.

Referring to fig. 15, the operation mechanism of the coupling member 20 is shown in the form of an equivalent circuit. Equivalent circuits of the unblocked and blocked TMFAs are described in fig. 15 (a) and 15 (b), respectively. The capacitor C1 may be used for impedance matching. The unblocked TMFA is represented by an RLC parallel circuit, while the blocked TMFA may be equivalently a purely reactive load jX. An equivalent circuit of a blocked TMFA with a coupling component 20 (MC) is presented in fig. 15 (c). As shown in fig. 15 (c), the coupling part 20 and the cell phone 200 together form an open transmission line.

Note that referring to fig. 16, energy is mainly coupled out of the protruding portion of the TMFA, not out of the coaxial cable. The S-parameters of a TMFA using rectangular lumped port feed are shown in fig. 16 (b). As shown in fig. 16 (a), the capacitance is maintained and the ground is lengthened. For simple matching, the port impedance may be adjusted to 35 ohms. If no coaxial cable is observed, the MC can still redirect energy efficiently within the desired frequency band. Thus, the antenna booster 100 can also function properly in practice when the TMFA is spring fed.

In some embodiments, referring again to fig. 6, the circularly polarized radiator 30 may include a first substrate 40, a second substrate 50, a circularly polarized patch 60, a feed network 70, and probes including a first probe 80 and a second probe 90. The structure of the circular polarized radiator 30 shown in fig. 6 is merely exemplary, and the circular polarized radiator 30 may be other structures, which are not limited in the embodiment of the present application.

In some embodiments, the first substrate 40 and the second substrate 50 may each be an FR-4 epoxy glass laminate, and the first substrate 40 and the second substrate 50 are each insulating. The first substrate 40 includes a first surface 41 and a second surface 42, and the first surface 41 and the second surface 42 are disposed opposite to each other in a thickness direction of the first substrate 40. The second substrate 50 includes a third surface 51 and a fourth surface 52, and the third surface 51 and the fourth surface 52 are disposed opposite to each other in the thickness direction of the second substrate 50. The second substrate 50 is provided with a through hole 53, the through hole 53 penetrating the third surface 51 and the fourth surface 52, the through hole 53 being for the coupling member 20 to pass through. The thickness direction of the first substrate 40 and the second substrate 50 is the Y-axis direction.

In some embodiments, the circularly polarized patch 60 may be a sheet of metal, and one or more circularly polarized antennas are disposed on the circularly polarized patch 60, and the circularly polarized patch 60 illustrated in fig. 6 has a square shape, and is merely exemplary in fig. 6. In fact, the circularly polarized patch 60 may also have a circular shape, an elliptical shape, a triangular shape, a parallelogram shape, and the like, which is not limited in the embodiment of the present application.

For example, as shown in fig. 17, fig. 17 is a schematic diagram of a circular polarized radiator provided in an embodiment of the present application, where the selectable circular polarized radiator may be a square patch or an antenna array, and the antenna array may include a plurality of patch antennas, and the plurality of patch antennas may work simultaneously to generate circular polarized radiation. To achieve broadband and high gain, the height and side length of the patch should be large. Referring to fig. 18 again, fig. 18 is a schematic diagram of the geometry of a circularly polarized patch 60 according to an embodiment of the present application, and the patch geometry is shown in fig. 18 (a). The distance between the chip board and the feed network 70 may be 7 millimeters so that the chip is close to a thick chip filled with air. The port may be set to 13 ohms to match the output port of the coupling component 20. The greater thickness helps to achieve broadband, while the substantial side length results in high Left Hand Circular Polarization (LHCP) gain, as shown in fig. 18 (b) and 18 (c). Due to the dual port feed scheme, it can be observed that the axial ratio remains low in the broadband range.

In some embodiments, the first probe 80 may be made of metal, and the first probe 80 may specifically include a first connection section 81 and a second connection section 82. One end of the first connecting section 81 and one end of the second connecting section 82 are fixedly connected, and a certain included angle is formed between the first connecting section 81 and the second connecting section 82, and the included angle can be specifically 90 degrees. In other words, the first probe 80 may be L-shaped. In other embodiments, the first connection section 81 and the second connection section 82 may have other angles, such as 70 degrees, 85 degrees, 110 degrees, etc.; the first probe 80 may also have other shapes, such as a round bar shape, etc., and is not limited in the embodiment of the present application.

In some embodiments, the second probe 90 may be made of metal, and the second probe 90 may specifically include a third connection section 91 and a fourth connection section 92. One end of the third connecting section 91 is fixedly connected with one end of the fourth connecting section 92, and a certain included angle is formed between the third connecting section 91 and the fourth connecting section 92, and the included angle may be 90 degrees specifically. In other words, the second probe 90 may be L-shaped. In other embodiments, the third connecting section 91 and the fourth connecting section 92 may have other angles, such as 80 degrees, 100 degrees, 120 degrees, etc.; the second probe 90 may also have other shapes, such as a round bar shape, a square block shape, etc., and the embodiments are not limited thereto.

In some embodiments, the first probe 80 and the second probe 90 are oriented perpendicular to each other so that two orthogonal modes of the circularly polarized patch 60 can be excited to achieve circularly polarized radiation.

The feed network 70 may include an impedance transformation line and two parallel capacitors. The feed network 70 includes an end and a start end 73, the end may include a first end 71 and a second end 72, and in another embodiment the end may also include the first end 71.

Referring to fig. 19, 20 and 21, in some embodiments, the first substrate 40 and the second substrate 50 are disposed at intervals along the Y-axis direction, and the second surface 42 of the first substrate 40 is opposite to the third surface 51 of the second substrate 50. The circularly polarized patch 60 is laminated and fixed on the first surface 41 of the first substrate 40, and specifically, the circularly polarized patch 60 may be adhesively fixed on the first surface 41 of the first substrate 40, or may be printed on the first surface 41 of the first substrate 40 by a printing method. The feed network 70 is fixed to the third surface 51 of the second substrate 50, and the start end 73 of the feed network 70 covers the through hole 53 of the second substrate 50.

The first connection section 81 of the first probe 80 may be fixed to the second surface 42 of the first substrate 40, and specifically, the first connection section 81 may be adhesively fixed to the second surface 42 of the first substrate 40, or may be printed on the second surface 42 of the first substrate 40 by printing. The second connection section 82 of the first probe 80 is located in the interval between the first substrate 40 and the second substrate 50, and an end of the second connection section 82, which is far away from the first connection section 81, is fixedly connected to the first end 71 of the feed network 70, and the second connection section 82 may be specifically welded and fixed to the first end 71 of the feed network 70.

The third connection section 91 of the second probe 90 may be fixed to the second surface 42 of the first substrate 40, and specifically, the third connection section 91 may be adhesively fixed to the second surface 42 of the first substrate 40, or may be printed on the second surface 42 of the first substrate 40 by a printing method. The fourth connection section 92 of the second probe 90 is located in the space between the first substrate 40 and the second substrate 50, and an end of the fourth connection section 92, which is far away from the third connection section 91, is fixedly connected to the second end 72 of the feeding network 70, and the fourth connection section 92 may be specifically welded and fixed to the second end 72 of the feeding network 70.

It is understood that the first substrate 40 and the second substrate 50 are connected by the first probe 80 and the second probe 90 and maintained in a spaced state. In other embodiments, the circularly polarized radiator 30 may further include a connector (not shown), where one end of the connector is fixedly connected to the first substrate 40, and the other end of the connector is fixedly connected to the second substrate 50, and the connector may make the states of the first substrate 40 and the second substrate 50 more stable.

In some embodiments, the signal shielding member 10 may be stacked and fixed to the second substrate 50. Specifically, the first shielding surface 11 of the signal shielding member 10 may be adhesively fixed to the fourth surface 52 of the second substrate 50, or may be printed on the fourth surface 52 of the second substrate 50 by printing. Between the signal shielding member 10 and the peripheral edge of the through hole 53, there is an escape area 54 (not shown), the escape area 54 surrounds one circumference of the peripheral edge of the through hole 53, and the width g of the escape area 54 is 0.35 mm.

The coupling element 20 may be disposed on a side of the second substrate 50 facing away from the first substrate 40, and one end of the coupling element 20 passes through the through hole 53 and is fixed to the start end 73 of the feeding network 70. The coupling member 20 and the signal shielding member 10 are spaced apart by the relief area 54 described above.

Referring to fig. 22, in some embodiments, the antenna booster 100 may further include a mounting sleeve 300, the mounting sleeve 300 being provided with mounting holes 310, the mounting holes 310 penetrating the mounting sleeve 300 in a height direction of the mounting sleeve 300. The mounting hole 310 includes a first hole side 311 and a second hole side 312, the first hole side 311 and the second hole side 312 being opposite in the width direction of the mounting sleeve 300. The mounting sleeve 300 includes a first mounting surface 320 and a second mounting surface 330, the first mounting surface 320 and the second mounting surface 330 being opposite in a height direction of the mounting sleeve 300, and the mounting hole 310 penetrating the first mounting surface 320 and the second mounting surface 330. Along the width direction of the mounting sleeve 300, the width of the first mounting surface 320 is greater than the width of the second mounting surface 330, so that the first mounting surface 320 can well support and connect the circularly polarized radiator 30, and the second mounting surface 330 is narrower, so that the size of the mounting sleeve 300 can be reduced, and the portability of the antenna booster 100 can be increased. The height direction of the mounting sleeve 300 is the Y-axis direction, and the width direction of the mounting sleeve 300 is the Z-axis direction.

The circular polarized radiator 30 may be fixed to the mounting sleeve 300, and in particular, the second shielding surface 12 of the signal shielding member 10 is fixedly coupled to the first mounting surface 320 of the mounting sleeve 300. The coupling member 20 protrudes into the mounting hole 310. Referring to fig. 23, in some embodiments, the first coupling surface 21 of the coupling member 20 may be attached to the first hole side surface 311, and the insulating layer 23 is disposed on the second coupling surface 22 of the coupling member 20, so that the coupling member 20 is prevented from colliding with the frame 224 of the mobile phone 200 when the mounting sleeve 300 is sleeved on the mobile phone 200, and the insulating layer 23 is prevented from contacting the frame 224, that is, preventing the coupling member 20 from contacting the radiator 233 when the mounting sleeve 300 is completely sleeved on the mobile phone 200. In other embodiments, the first coupling surface 21 of the coupling member 20 may be spaced from the first hole side surface 311.

For example, as shown in fig. 24, fig. 24 is a schematic diagram of the geometry of an antenna booster 100 according to an embodiment of the present application, and as shown in fig. 24 (a), a Circularly Polarized (CP) patch may be printed on the upper side of the FR4 board (er=4.4, tan δ=0.02), and a horizontal portion of the L-shaped probe may be printed on the lower side. Two metal posts, which are vertical portions of the L-shaped probe, may be soldered at the ends of the feed network 70 and inserted into the chip board. The metal posts may be separate from the patch. The feed network 70 may be printed on another FR4 board, as shown in fig. 24 (b), and Wilkinson (Wilkinson) power dividers and phase shift lines may be employed to meet the feed requirements of the double feed CP patch. For matching, a length of impedance transformation line and two parallel capacitors may be used. At the beginning of the feed network 70, a slot through hole for connecting the coupler may be provided. The upper left corner of fig. 24 (b) shows an enlarged rear view of the slot through hole in a red dashed box. There may be a gap g=0.35 mm between the slot through hole and the ground. The geometry of the coupler is shown in fig. 24 (c), the geometry of the antenna booster 100 is illustrated in fig. 24 (d), and the geometry of the mounting sleeve 300 is illustrated in fig. 24 (e). The mounting sleeve 300 may be used to secure an external antenna to the top of the handset 200. The detailed dimensions of the antenna booster 100 can be seen in table I.

TABLE I

Detailed dimensional parameters of the proposed antenna

Units: mm (mm)

Referring to fig. 25 and 26, in some embodiments, when the handset 200 needs to communicate with a high orbit satellite or a geostationary satellite, the antenna booster 100 may be mounted to the handset 200, such as on top of the handset 200, by a mounting sleeve 300. In other embodiments, the antenna booster 100 may not include the mounting sleeve 300, and the antenna booster 100 may be mounted to the mobile phone 200 by means such as a strap or an adhesive tape when the antenna booster 100 is mounted to the mobile phone 200. The embodiments of the present application are not limited.

When the antenna booster 100 is mounted to the mobile phone 200 through the mounting sleeve 300, at least a portion of the mobile phone 200 extends into the mounting hole 310, and the first radiation surface 234 of the radiator 233 is flush with the first mounting surface 320 of the mounting sleeve 300, and the first radiation portion 250 and the second radiation portion 260 of the radiator 233 are exposed from the mounting hole 310, and the first radiation portion 250 and the second radiation portion 260 are in contact with the signal shielding member 10, specifically, the first radiation surface 234 is in contact with the second shielding surface 12 of the signal shielding member 10. Thus, the first radiating portion 250 and the second radiating portion 260 are connected through the signal shielding member 10, and at this time, resonance of the antenna 230 of the mobile phone 200 is broken, so that the antenna 230 is equivalent to a resistive load.

Referring to fig. 27 and 28, in the Z-axis direction, coupling member 20 is facing back plate and bezel 224 of cell phone 200, and coupling member 20 is generally parallel to the back plate of cell phone 200. The coupling member 20 and the radiator 233 have a space therebetween, wherein a portion of the coupling member 20 faces the first radiating portion 250, and in particular, a portion of the second coupling surface 22 of the coupling member 20 faces a portion of the second radiating surface 235 located at the first radiating portion 250. The second coupling surface 22 of the coupling member 20 and the second radiating surface 235 have a first interval L1 therebetween, and the width of the first interval may be 0.2 mm.

In the Z-axis direction, the front projection of the coupling member 20 on the non-metallic back cover 222 and the front projection of the feeding point 231 on the non-metallic back cover 222 at least partially coincide.

In the Z-axis direction, the grounding element 237 of the mobile phone 200 is located on the side of the back plate facing away from the coupling component 20, and the front projection of the coupling component 20 on the non-metal back cover 222 and the front projection of the feeding point 231 on the non-metal back cover 222 are at least partially overlapped, so that the coupling component 20 and the grounding element 237 form an open transmission line. In other words, the other portion of the coupling member 20 is facing the ground 237, in particular, the other portion of the second coupling surface 22 of the coupling member 20 is facing the ground 237, and the second coupling surface 22 of the coupling member 20 is spaced apart from the ground 237 by a second distance L2 such that the coupling member 20 and the ground 237 form an open transmission line having a length of about one-quarter wavelength, whereby the coupling member 20 is capable of resonating in one-quarter wavelength mode to couple energy.

In some embodiments, the front projection of the coupling component 20 on the non-metallic back cover 222 completely covers the front projection of the feed point 231 on the non-metallic back cover 222.

Specifically, the most concentrated energy is provided at the feeding point 231, and the front projection of the feeding point 231 on the non-metal rear cover 222 is completely covered by the front projection of the coupling component 20 on the non-metal rear cover 222, so that the coupling component 20 can better couple the energy at the feeding point 231.

The signal shielding part 10 is in contact with the first radiation part 250 and the second radiation part 260, and the signal shielding part 10 reflects the energy radiated from the antenna to the open transmission line, which couples the energy to the circular polarized radiator 30. Specifically, the open transmission line transmits energy to the feed network 70, the feed network 70 transmits energy to the first and second probes 80 and 90, and the first and second probes 80 and 90 couple the energy to the circularly polarized patch 60.

For example, as shown in fig. 29, fig. 29 is a schematic diagram illustrating an assembly relationship between the antenna enhancer 100 and the mobile phone 200 according to the embodiment of the present application. In fig. 29 (a) it is shown how the antenna booster 100 is mounted on the smartphone 200. For better illustration, the smartphone 200 in fig. 29 is simplified to a metal frame and ground. When the antenna booster 100 is mounted on the smartphone 200 as shown in fig. 29 (a), the energy originally fed to the Top Metal Frame Antenna (TMFA) will be effectively redirected to the Circularly Polarized (CP) patch, thereby enhancing the satellite communication performance of the smartphone 200. An exploded view of (a) in fig. 29 is shown in (b) in fig. 29. The elements in fig. 29 (b) from top to bottom are: a square CP patch, two L-shaped probes, a microstrip feed network 70, a coupling device (MC), a mounting sleeve 300, and a smartphone 200. For a clearer view, a part of the installation sleeve is cut out in fig. 29 (b). TMFA is simplified and marked within the dashed box. The position of the coupling device relative to the TMFA after installation is marked with a dashed box in fig. 29 (b).

The above embodiments are merely for illustrating the technical solution of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the corresponding technical solutions.

Claims

1. An antenna booster, wherein the antenna booster is applied to an electronic device, the electronic device comprising an antenna and a non-metallic rear cover;

the antenna comprises a first metal frame, wherein the first metal frame is provided with a feed point, and a gap is formed in the first metal frame;

the antenna enhancer comprises a signal shielding component, a coupling component and a circularly polarized radiator; the antenna booster is mounted on top of the electronic device and forms the following cooperation with the electronic device:

the signal shielding component is used for shielding radiation signals of the antenna;

the coupling component is arranged on one side of the nonmetal rear cover, and the orthographic projection of the coupling component on the nonmetal rear cover is at least partially overlapped with the orthographic projection of the feed point on the nonmetal rear cover;

The coupling member does not contact the first metal bezel; the first end of the coupling component is open, and the second end of the coupling component is connected with the circularly polarized radiator;

the circularly polarized radiator is arranged on the outer surface of the antenna enhancer; the top of the electronic device includes the first metal bezel.

2. The antenna booster of claim 1 wherein said signal shielding member comprises a first metal plate; the signal shielding part shields the gap, and specifically comprises: the first metal sheet at least shields the gap.

3. The antenna booster of claim 2 wherein said signal shielding member covers said first metal bezel.

4. The antenna booster of claim 1 wherein an orthographic projection of said coupling member on said non-metallic back cover completely covers an orthographic projection of said feed point on said non-metallic back cover.

5. The antenna booster of claim 1, wherein the coupling member includes a first portion, a second portion, and a third portion connected in sequence along a length of the coupling member; wherein the first part and the second part are both trapezoidal metal, and the third part is rectangular metal.

6. The antenna booster of claim 1, wherein the longer the length of the coupling member, the lower the operating band of the antenna booster; the shorter the length of the coupling member, the higher the operating frequency band of the antenna booster.

7. The antenna booster of claim 1 wherein a first standing wave current is formed on said coupling member and a peak current value at said second end of said coupling member is greatest and a peak current value at said first end of said coupling member is smallest;

the electronic device further comprises a Printed Circuit Board (PCB) connected to the feeding point through a feeding component, the coupling component forms a second standing wave current on a projection area of the PCB, and the second standing wave current is opposite to the first standing wave current in phase.

8. The antenna booster of claim 1 wherein said coupling component is parallel to said non-metallic back cover.

9. The antenna booster of claim 1 further including a mounting sleeve having a mounting hole therethrough along a height of said antenna booster, said signal shielding member fixedly connected to said mounting sleeve, said coupling member extending at least partially into said mounting hole.

10. The antenna booster of claim 9 wherein said mounting hole includes a first hole side, said coupling member conforming to said first hole side.

11. The antenna booster of claim 10 wherein said coupling member includes a first coupling face and a second coupling face, said first coupling face facing said first aperture side; the second coupling surface is fixed with an insulating layer, and the insulating layer covers all areas of the second coupling surface.

12. The antenna booster of claim 11 wherein said circularly polarized radiator comprises a first substrate, a second substrate, a circularly polarized patch, a feed network, and a probe;

the first substrate and the second substrate are stacked along the height direction of the antenna enhancer, and a space is reserved between the first substrate and the second substrate; the circularly polarized patch is fixed on the surface of the first substrate, which is away from the second substrate, and the feed network comprises a starting end and a tail end;

the probes are arranged in the interval, one ends of the probes are fixedly connected with the surface of the first substrate facing the second substrate, and the other ends of the probes are fixedly connected with the tail ends;

The signal shielding component is fixed on the surface of the second substrate, which is away from the first substrate, and one side of the signal shielding component, which is away from the second substrate, is fixedly connected with the mounting sleeve; the coupling component is arranged on one side, away from the first substrate, of the second substrate, penetrates through the first substrate and is connected to the starting end.

13. The antenna booster of claim 12 wherein said mounting sleeve includes a first mounting face, said first mounting face being oriented toward said signal shielding member, said mounting aperture extending through said first mounting face;

the signal shielding component comprises a first shielding surface and a second shielding surface, the first shielding surface and the second shielding surface are arranged opposite to each other along the height direction of the antenna enhancer, the first shielding surface is fixedly connected with the surface of the second substrate, which is away from the first substrate, and the second shielding surface is fixedly connected with the first mounting surface.