Antenna radiation structure and communication terminal

Abstract

The present invention discloses an antenna radiation structure and a communication terminal, which relate to the field of wireless communication technology. The antenna radiation structure is arranged on the outer wall of a casing and exposed relative to the casing. The antenna radiation mechanism comprises: a dielectric layer; a radiator, which is arranged on the dielectric layer and at least distributed on the opposite side of the dielectric layer; a floor layer, which forms a ground system connected to or integrated with the casing, and a hollow area is arranged on the floor layer; a signal transmission component, which is arranged in the hollow area, and one side of the signal transmission component is connected to the radiator, and the other side extends toward the floor layer and is connected to an input signal port near the floor layer. The present invention can reduce or even avoid the influence of the metal body on the antenna radiation efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of wireless communications, and in particular to an antenna radiation structure and a communication terminal. Background Art

[0002] Today's portable computers and other communication terminals are gradually integrating mobile communication technology, especially with the activation of aerospace communication networks, direct communication between computers and satellites has become a possible application scenario. However, given that most communication terminals currently use an all-metal body design, this structure poses a significant challenge to the radiation effect of the antenna, resulting in a reduction in the antenna radiation efficiency in a metal body environment.

[0003] It can be seen that how to improve the radiation efficiency of the antenna in a metal body environment is a problem that technical personnel in this field need to solve. Summary of the invention

[0004] The purpose of the embodiments of the present invention is to provide an antenna radiation structure that can reduce or even avoid the influence of a metal body on the antenna radiation efficiency.

[0005] In order to solve the above technical problems, an embodiment of the present invention provides an antenna radiation structure, which is arranged on the outer wall of a casing and exposed relative to the casing, and includes:

[0006] dielectric layer;

[0007] Radiators are disposed on the dielectric layer and are distributed at least on opposite sides of the dielectric layer;

[0008] A floor layer, forming a ground system connected to or integrated with the housing, and a hollow area is provided on the floor layer;

[0009] A signal transmission component is arranged in the hollow area, one side of the signal transmission component is connected to the radiator, and the other side extends toward the floor layer and is connected to an input signal port near the floor layer.

[0010] In some embodiments, the radiator includes a first radiator located on one side of the dielectric layer and a second radiator located on the other side of the dielectric layer, the first radiator and the second radiator are both in fixed contact with the dielectric layer, and the first radiator is signal-connected to the second radiator.

[0011] In some embodiments, the first radiator is disposed on a side of the dielectric layer facing the floor layer, and the second radiator is disposed on the other side of the dielectric layer opposite thereto, and both radiators are located in a hollow area of ​​the floor layer and exposed relative to the casing.

[0012] In some embodiments, the first radiator includes a grid radiator with parallel grid lines on both sides and a metal plane located between the two groups of parallel grid lines, the opposite sides of the two groups of parallel grid lines are connected to the metal plane, and the two groups of parallel grid lines are symmetrically distributed about the metal plane, and a connecting structure for connecting the first radiator and the second radiator is provided on the metal plane.

[0013] In some embodiments, the second radiator includes a metal parallel plate parallel to the surface of the dielectric layer, and the length of the second radiator is shorter than the length of the first radiator.

[0014] In some embodiments, the signal transmission component is disposed on a side of the metal plane that is not the parallel grid lines, and a tuning component for fixing and adjusting the antenna impedance is disposed on the other side of the metal plane opposite to the signal transmission component.

[0015] In some embodiments, the first radiator includes a metal sheet in contact with the surface of the dielectric layer, and a middle portion of the first radiator is connected to the signal transmission component.

[0016] In some embodiments, the second radiator includes a metal strip in contact with the surface of the dielectric layer and located at the edge of the outer wall of the casing, the metal strip is overall bilaterally symmetrical and has a periodic grid structure, the second radiator is connected to the casing, and the length of the second radiator is greater than the length of the first radiator.

[0017] In some embodiments, the metal strip includes a central resonant metal strip located at the center, and a first metal narrow strip, a first resonant metal strip, a second metal narrow strip, a second resonant metal strip, and a third metal narrow strip are connected to one side in sequence from the central resonant metal strip, and the lengths of the central resonant metal strip, the first resonant metal strip, and the second resonant metal strip decrease in sequence.

[0018] In some embodiments, the hollow area is opened on the floor layer surface and extends away from the housing to the edge of the outer wall of the housing. The antenna radiation structure is arranged at the hollow area and fixedly connected to the support carrier inside the housing.

[0019] The radiator is spaced apart from the floor layer to control the radiation pattern and impedance matching of the antenna;

[0020] The hollow area is a rectangular slot, and the length of the rectangular slot is greater than the length of the antenna radiation structure. A hollow groove is provided at a position corresponding to the hollow area and the signal transmission component. The end of the signal transmission component extends into the hollow groove. The overall structure after the signal transmission component is connected to the input signal port is spaced apart from the wall of the hollow groove.

[0021] The hollow area of ​​the signal transmission component is covered with a non-metallic dielectric material, and the shape of the non-metallic dielectric material matches the hollow area to at least cover the signal transmission component to isolate the signal transmission component from the external environment;

[0022] The signal transmission component is a metal belt parallel to the floor layer surface, the metal belt is rectangular, the hollow groove is a rectangular groove matching the metal belt, and the signal transmission component is located in the plane where the floor layer surface is located;

[0023] The housing includes an upper housing and a lower housing, the antenna radiation structure is arranged on the side or top edge of the upper housing, and the signal transmission component is routed through the spatial position between the screen component on the upper housing and the upper housing; or the antenna radiation structure is arranged on the side or bottom edge of the lower housing, and the signal transmission component is routed through the spatial position between the control component on the lower housing and the housing.

[0024] In some embodiments, the antenna radiation structure is movably disposed between two opposite shells of the casing, and there is at least one position state in which the antenna radiation structure protrudes from the casing so that the antenna radiation structure is exposed relative to the casing.

[0025] In some embodiments, the floor layer includes a metal plate embedded between two opposite shells and in sliding contact with the two shells respectively, the floor layer is electrically connected to the housing, one side of the dielectric layer is clamped between the floor layers, and the other side protrudes from the floor layer, and the blank area of ​​the floor layer corresponding to the protruding side of the dielectric layer is the hollow area;

[0026] The clamping side of the dielectric layer is located in a corresponding space relative to the shells, and a plurality of periodic metal columns are evenly distributed in the corresponding spaces of the two shells, at least one of the metal columns penetrates the clamping side of the dielectric layer and is fixedly connected to the two shells.

[0027] In some embodiments, the protruding direction of the dielectric layer is towards the outside of the casing, the first radiator and the second radiator are respectively provided on the opposite end faces of the protruding side of the dielectric layer, the plane where the radiator is located is parallel to the plane where the floor layer is located, and the radiator is spaced apart from the casing and the floor layer.

[0028] In some embodiments, the first radiator is disposed at the hollow area, the signal transmission component is provided on the first radiator, a hollow groove is provided at a position of the floor layer corresponding to the position of the signal transmission component, an end of the signal transmission component extends into the hollow groove, and the overall structure after the signal transmission component is connected to the input signal port is spaced apart from the wall of the hollow groove.

[0029] In some embodiments, the second radiator is located at the hollow area on the other side of the first radiator, and the second radiator is a continuous structure of the metal plate on one side of the floor layer, including a first bent metal wire and a second bent metal wire respectively located on the left and right sides of the hollow area, and the first bent metal wire and the second bent metal wire have different lengths and / or bending times to provide resonant radiation of different frequencies.

[0030] In some embodiments, the overall length of the shape corresponding to the outline of the second radiator is greater than the length of the first radiator, and within the length range of the first radiator, there are partial structures corresponding to the first bent metal wire and the second bent metal wire respectively.

[0031] A communication terminal comprises the antenna radiation structure described in any one of the above items.

[0032] It can be seen from the above technical scheme that the beneficial effect of the present invention is that, on the one hand, the antenna radiation structure is exposed relative to the casing, specifically, the dielectric layer, radiator, and signal transmission component are all exposed relative to the casing, thereby avoiding the influence of the metal body on the antenna radiation efficiency; on the other hand, the unique setting of the radiator and the dielectric layer improves the efficiency of the radiator in sending and receiving mobile signals for space communication. At the same time, the antenna radiation structure and the casing of the communication terminal are integrated into one design, which does not occupy the internal space of the communication terminal, achieving a convenient and efficient effect, and the overall communication performance in the S band can be achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0034] Figure 1 A three-dimensional schematic diagram of a first antenna radiation structure provided in an embodiment of the present invention;

[0035] Figure 2 A front view of a first antenna radiation structure provided by an embodiment of the present invention;

[0036] Figure 3 A rear view of a first antenna radiation structure provided by an embodiment of the present invention;

[0037] Figure 4 A bottom view of a first antenna radiation structure provided by an embodiment of the present invention;

[0038] Figure 5 A three-dimensional schematic diagram from another perspective of the first antenna radiation structure provided by an embodiment of the present invention;

[0039] Figure 6 A schematic diagram of the installation of a first antenna radiation structure and a communication terminal provided in an embodiment of the present invention;

[0040] Figure 7 for Figure 6 A partial enlarged schematic diagram;

[0041] Figure 8 A schematic diagram of scattering parameter simulation of a first antenna radiation structure provided in an embodiment of the present invention;

[0042] Fig. 9 A schematic diagram of a simulation of the total working efficiency of a first antenna radiation structure provided in an embodiment of the present invention;

[0043] Fig.10 A schematic diagram of a simulation of gain performance of a first antenna radiation structure provided in an embodiment of the present invention;

[0044] Fig.11 A schematic diagram of the installation of a second antenna radiation structure and a communication terminal provided by an embodiment of the present invention;

[0045] Fig.12 for Fig.11 A partial enlarged schematic diagram;

[0046] Fig.13 A schematic diagram of the configuration structure of a second radiator in a second antenna radiation structure provided in an embodiment of the present invention;

[0047] Fig.14 A schematic diagram of a dielectric layer arrangement structure in a second antenna radiation structure provided in an embodiment of the present invention;

[0048] Fig.15 A schematic diagram of the configuration structure of the first radiator in the second antenna radiation structure provided in an embodiment of the present invention;

[0049] Fig.16 A schematic diagram of simulation of scattering parameters of a second antenna radiation structure provided in an embodiment of the present invention;

[0050] Fig.17 A schematic diagram of the simulation of the total working efficiency of the second antenna radiation structure provided in an embodiment of the present invention;

[0051] Fig.18 A schematic diagram of a simulation of gain performance of a second antenna radiation structure provided in an embodiment of the present invention;

[0052] Fig.19 A schematic diagram of the front structure of a third antenna radiation structure provided in an embodiment of the present invention;

[0053] Fig. 20 A schematic diagram of the back structure of a third antenna radiation structure provided in an embodiment of the present invention;

[0054] Fig.21 A schematic diagram of the relative positions of a first radiator and a second radiator in a third antenna radiation structure provided in an embodiment of the present invention;

[0055] Fig. 22 A schematic diagram of a dielectric layer structure in a third antenna radiation structure provided in an embodiment of the present invention;

[0056] Fig.23 A schematic diagram of a third antenna radiation structure in an extended state provided by an embodiment of the present invention;

[0057] Fig.24 A schematic diagram of a third antenna radiation structure in a retracted state provided by an embodiment of the present invention;

[0058] Fig.25 A schematic diagram of the installation of a third antenna radiation structure and a communication terminal provided by an embodiment of the present invention;

[0059] Fig.26 A schematic diagram of simulation of scattering parameters of a third antenna radiation structure provided in an embodiment of the present invention;

[0060] Fig. 27 A schematic diagram of a simulation of the total working efficiency of a third antenna radiation structure provided in an embodiment of the present invention;

[0061] Fig.28 A schematic diagram of simulation of gain performance of a third antenna radiation structure provided in an embodiment of the present invention.

[0062] In the figure:

[0063] 1-floor layer; 2-dielectric layer; 3-first radiator; 31-parallel grid lines; 32-metal plane; 4-second radiator; 41-central resonant metal strip; 42-first metal narrow strip; 43-first resonant metal strip; 44-second metal narrow strip; 45-second resonant metal strip; 46-third metal narrow strip; 47-first bent metal wire; 48-second bent metal wire; 5-signal transmission component; 6-hollow area; 7-hollow groove; 8-tuning component; 9-housing; 10-metal column. DETAILED DESCRIPTION

[0064] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0065] In order to enable those skilled in the art to better understand the solution of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0066] Next, an antenna radiation structure provided by an embodiment of the present invention is introduced in detail. The antenna radiation structure is arranged on the outer wall surface of the casing 9, that is, it can be arranged on the side, top and bottom of the casing 9, so that the antenna radiation structure can be exposed relative to the casing 9. The antenna radiation structure includes a dielectric layer 2, a radiator, a floor layer 1 and a signal transmission component 5. The dielectric layer 2 adopts a low-loss electromagnetic dielectric material, such as a lead glass material with a dielectric constant of six, of course including but not limited to lead glass material. The dielectric layer 2 is located as a whole in the middle of the overall structure of the antenna, or in the middle of the radiator, to carry the radiator; the dielectric layer 2 can be used to support the radiator structure and the overall structure of the antenna on the one hand, and can assist the radiator in radiating electromagnetic waves on the other hand.

[0067] The radiator is arranged on the dielectric layer 2 and is at least distributed on the opposite sides of the dielectric layer 2. The dielectric layer 2 serves as a bearing component of the radiator. The radiator may be a radiating patch, which is attached to the dielectric layer 2, so as to realize that the antenna radiation structure is a patch antenna radiation junction. In this embodiment, the radiator can be used to send and receive communication signals of different frequencies. For example, the radiator on the opposite sides of the dielectric layer 2, the radiator on one side can be used to send and receive communication signals of a first operating frequency, and the radiator on the other side can be used to send and receive communication signals of a second operating frequency.

[0068] The shape of the radiator can be set according to the actual antenna design requirements. For example, the shape of the radiator can be set to be square, circular, grid-shaped, etc., and this embodiment does not impose too many restrictions.

[0069] The floor layer 1 forms a ground system connected to or integrated with the housing 9. That is, the floor layer 1 has two settings. One is connected to the housing 9. The two are independent components, but they need to meet the electrical connection and realize system grounding through the housing 9. The other is to regard the floor layer 1 and the housing 9 as an integrated structure, that is, the housing 9 is the floor layer 1, so as to realize system grounding. The setting of the floor layer 1 can suppress the backward radiation of the antenna, increase the front-to-back radiation ratio, and thus shape the antenna's directional pattern. At the same time, it can enhance the reflection and diffusion of the electromagnetic wave signal of the radiator.

[0070] A hollow area 6 is provided on the floor layer 1, and a signal transmission component 5 is provided in the hollow area 6. One side of the signal input component is connected to the radiator, and the other side extends toward the radiation layer and is connected to the input signal port near the floor layer 1. The electrical energy is converted into electromagnetic radiation through the output signal port, and the electromagnetic radiation of a specific working frequency is radiated out through the radiator.

[0071] In summary of the above embodiments, the present invention avoids the influence of the metal body on the antenna radiation efficiency by exposing the antenna radiation structure relative to the housing 9, specifically, the dielectric layer 2, the radiator, and the signal transmission component 5 are all exposed relative to the housing 9; the present invention improves the efficiency of the radiator in sending and receiving mobile signals for space communication through the unique arrangement of the radiator and the dielectric layer 2. At the same time, the antenna radiation structure and the housing 9 of the communication terminal are integrated into one design, which does not occupy the internal space of the communication terminal, and achieves a convenient and efficient effect, and the overall communication performance in the S band can be achieved.

[0072] In some embodiments, the radiator includes a first radiator 3 located on one side of the dielectric layer 2 and a second radiator 4 located on the other side of the dielectric layer 2. The first radiator 3 and the second radiator 4 are both fixedly contacted with the dielectric layer 2. On this basis, the first radiator 3 and the second radiator 4 are signal-connected. There may be various forms of signal connection, such as coplanar waveguide connection, feed excitation connection, etc., which are not restricted here. That is to say, the two radiators and the dielectric layer 2 in this embodiment are stacked, which can reduce the overall size of the antenna radiation structure and improve space utilization.

[0073] Please refer to Figure 1 In some embodiments, the first radiator 3 is disposed on the side of the dielectric layer 2 facing the floor layer 1, and the second radiator 4 is disposed on the other side opposite to the dielectric layer 2. Since a hollow area 6 is provided on the floor layer 1, the radiator can be disposed in the hollow area 6, so that the first radiator 3 and the second radiator 4 are both exposed relative to the housing 9. Of course, since the antenna radiation structure of the present invention is disposed as a whole at the side of the housing 9, and the signal input component is located in the hollow area 6, the influence of the metal housing 9 on the radiation efficiency is almost non-existent.

[0074] In some embodiments, please refer to Figure 2 and Figure 3 , the first radiator 3 can be arranged close to the side of the housing 9. Of course, due to the existence of the hollow area 6, the first radiator 3 is not in direct contact with the housing 9, thereby avoiding direct system grounding of the first radiator 3.

[0075] Please refer to Figure 4The first radiator 3 includes a grid radiator with parallel grid lines 31 on both sides and a metal plane 32 located between the two groups of parallel grid lines 31. The opposite sides of the two groups of parallel grid lines 31 are connected to the metal plane 32. The parallel grid lines 31 are made of metal to generate frequency resonance. In addition, the dielectric layer 2 can support the first radiator 3 and generate frequency resonance.

[0076] It can be seen that the two groups of parallel grid lines 31 of this embodiment are symmetrically arranged about the metal plane 32, and a connection structure for connecting the first radiator 3 and the second radiator 4 is provided on the metal plane 32, thereby realizing signal connection between the first radiator 3 and the second radiator 4.

[0077] In this embodiment, the dielectric layer 2 adopts a parallel plate structure of low-loss electromagnetic dielectric material, the second radiator 4 includes a metal parallel plate parallel to the surface of the dielectric layer 2, and the length of the second radiator 4 is smaller than the length of the first radiator 3, so that the first radiator 3 and the second radiator 4 generate electromagnetic waves of different operating frequencies.

[0078] In addition, please refer to Figure 4 and Figure 5 A signal transmission component 5 is provided on the side of the metal plane 32 where the parallel grid lines 31 are not provided. The signal transmission component 5 is connected to the first radiator 3, and one end of the signal transmission component 5 can be close to the floor layer 1 after connecting the input signal. A tuning component 8 for fixing and adjusting the antenna impedance is provided on the other side of the metal plane 32 relative to the signal transmission component 5. The tuning component 8 can achieve impedance matching between the antenna and the feeder, thereby maximizing the power transmission efficiency and reducing the signal loss. The tuning method includes adjusting the physical size of the antenna, adding tuning elements, using a matching network, etc., which will not be repeated here, and the details can be referred to the prior art.

[0079] It should be noted that the antenna radiation structure of this embodiment can be arranged on the side, top or bottom of the housing 9, please refer to Figure 6 and Figure 7 , the dielectric layer 2 can be thinner here, so that the antenna radiation structure as a whole can maintain a small size; specifically, in the existing communication terminal, taking a portable computer as an example, the portable computer usually includes an upper housing and a lower housing. When the antenna radiation structure is arranged on the side or top of the upper housing, the signal transmission component 5 is routed through the space between the screen component on the upper housing and the upper housing, thereby improving the space utilization. Similarly, when the antenna radiation structure is arranged on the side or bottom of the lower housing, the signal transmission component 5 is routed through the space between the control component on the lower housing and the lower housing.

[0080] Figure 8 A schematic diagram of scattering parameter simulation of a first antenna radiation structure provided in an embodiment of the present invention; Fig. 9A schematic diagram of a simulation of the total working efficiency of a first antenna radiation structure provided in an embodiment of the present invention; Fig.10 A schematic diagram of the simulation of the gain performance of the first antenna radiation structure provided in an embodiment of the present invention.

[0081] It can be seen that this embodiment can achieve an S11 (return loss coefficient) parameter of less than -8dB in the S-band transmitting frequency band of 1980MHz-2010MHz and the receiving frequency band of 2170MHz-2200MHz, while the overall radiation efficiency is greater than 80%, and the average radiation gain reaches 3dBi, so that the antenna radiation structure of this embodiment achieves good communication transceiver performance.

[0082] In summary of the above embodiments, the antenna radiation structure of this embodiment can be used for the transmission and reception of mobile signals in aerospace communications. The housing 9 can be specifically made of metal. At the same time, the antenna radiation structure and the housing 9 are integrated into one design, and the antenna is installed without occupying the internal space of the communication terminal device, thereby achieving convenience and efficiency. The overall embodiment can achieve communication performance in the S band and meet signal application requirements.

[0083] Please refer to Fig.11 and Fig.12 In some embodiments, a second antenna radiating structure is disclosed. Fig.11 A schematic diagram of the installation of a second antenna radiation structure and a communication terminal provided by an embodiment of the present invention; Fig.12 for Fig.11 A partial enlarged schematic diagram is shown in the figure.

[0084] Please refer to Fig.11 The casing 9 can be specifically made of metal. The casing 9 is usually a metal structure of a planar square outer shell, and the antenna radiation structure is arranged on the outer wall of the casing 9, so as to avoid the casing 9 shielding the radiation signal, absorbing electromagnetic waves, and changing the antenna impedance.

[0085] In this embodiment, the first radiator 3 includes a metal sheet in contact with the surface of the dielectric layer 2. The first radiator 3 is disposed on the lower surface of the dielectric layer 2. Fig.15 , the middle part of the first radiator 3 is connected to the signal transmission component 5.

[0086] Please refer to Fig.13 In some embodiments, the second radiator 4 includes a metal strip in contact with the surface of the dielectric layer 2 and located at the edge of the outer wall of the casing 9. The metal strip is symmetrical as a whole and has a periodic grid structure. The second radiator 4 is connected to the casing 9, but it should be noted that due to the presence of the hollow area 6, the second radiator 4 is not directly electrically connected to the casing 9, thereby avoiding the second radiator 4 system from being grounded.

[0087] At the same time, the length of the second radiator 4 is significantly greater than that of the first radiator 3 , thereby generating electromagnetic waves with different operating frequencies.

[0088] For further information, please refer to Fig.13 The metal strip includes a central resonant metal strip 41 located at the center, and a first metal narrow strip 42, a first resonant metal strip 43, a second metal narrow strip 44, a second resonant metal strip 45, and a third metal narrow strip 46 are sequentially connected to one side from the central resonant metal strip 41, and the lengths of the central resonant metal strip 41, the first resonant metal strip 43, and the second resonant metal strip 45 decrease in sequence, thereby generating frequency resonance through multiple resonant metal strips and metal narrow strips on the second radiator 4.

[0089] In addition, please refer to the configuration of the dielectric layer 2. Fig.14 , whose length is roughly the same as that of the second radiator 4, and can support the stable setting of the second radiator 4. As for the connection between the first radiator 3, the second radiator 4 and the dielectric layer 2, they can be fixed by bonding or the like. The dielectric layer 2 can also be made of lead oxide glass material, so as to have a lower dielectric constant and dielectric loss.

[0090] Fig.16 A schematic diagram of simulation of scattering parameters of a second antenna radiation structure provided in an embodiment of the present invention; Fig.17 A schematic diagram of the simulation of the total working efficiency of the second antenna radiation structure provided in an embodiment of the present invention; Fig.18 A schematic diagram of the simulation of the gain performance of the second antenna radiation structure provided in an embodiment of the present invention.

[0091] It can be seen that in this embodiment, the antenna radiation structure can achieve an S-band transmitting frequency band of 1980MHz-2010MHz and a receiving frequency band of 2170MHz-2200MHz with an S11 parameter less than -10dB. At the same time, the overall radiation efficiency is greater than 90%, and the average radiation gain reaches 8dBi, so that the antenna radiation structure of this embodiment achieves better communication transceiver performance.

[0092] For the above two antenna radiation structures, both are provided with a hollow area 6, and the hollow area 6 is located on the board surface of the floor layer 1, one side of the hollow area 6 has a boundary, and the other side extends away from the housing 9 to the edge of the outer wall of the housing 9, and the antenna radiation structure is provided at the edge, thereby avoiding the radiator and the signal transmission component 5 from being directly grounded. For existing portable computers, there is usually a certain support carrier inside the housing 9 to set the electrical components for the normal operation of the computer. In this embodiment, the antenna radiation structure can be set on the support carrier, so that it can be stably set. Of course, the support carrier should be a non-metallic material.

[0093] It is worth noting that it has been pointed out many times above that the radiator should be spaced apart from the floor layer 1, the purpose of which is to ensure the effective transmission and reception of wireless signals. Through reasonable spacing design, the radiator can stimulate the floor layer 1 to support the wireless signal of the target frequency band under the action of the feed source, thereby achieving optimized signal transmission. Of course, the above goal can be achieved through the hollow area 6, and the hollow area 6 can reduce the weight of the antenna radiation structure, and also help to reduce the size of the communication terminal.

[0094] For the above-mentioned hollow area 6, this embodiment provides a rectangular slot, which can of course also be an arc or other shape, and there are no excessive restrictions here. In order to avoid the radiator being electrically connected to the housing 9, the length of the rectangular slot needs to be greater than the length of the antenna radiation structure, and a hollow groove 7 is provided at the position corresponding to the hollow area 6 and the signal transmission component 5, and the end of the signal transmission component 5 extends into the hollow groove 7. The overall structure after the signal transmission component 5 is connected to the input signal port is spaced from the wall of the hollow groove 7, that is, a certain distance is maintained between the radiator and the floor layer 1.

[0095] In addition, the presence of the hollow area 6 will reduce the appearance of the housing 9 itself, and will also expose some parts of the antenna radiation structure to the outside, affecting the performance. Therefore, the antenna radiation structure can be shaped and packaged by covering the hollow area 6 with non-metallic dielectric materials. On the one hand, it can improve the stability of the antenna radiation structure and avoid the antenna radiation structure being directly exposed to the outside. On the other hand, it can improve the aesthetics of the antenna radiation structure and the communication terminal. Specifically, the shape of the non-metallic dielectric material should roughly match the hollow area 6. Of course, the hollow area 6 includes a hollow groove 7, so that the filled non-metallic dielectric material at least covers the signal transmission component 5, so that the signal transmission component 5 is isolated from the external environment. Of course, the non-metallic dielectric material will not affect the radiation efficiency of the antenna radiation structure.

[0096] In addition, please refer to Figure 1 and Fig.12 It can be seen that the signal transmission components 5 are all metal strips parallel to the floor layer 1, and the metal strips are specifically rectangular, and the hollow grooves 7 are rectangular grooves matching the metal strips. The signal transmission components 5 are located in the plane where the floor layer 1 is located, so that when the metal dielectric material is filled in the hollow area 6, the signal transmission components 5 can be completely covered. Of course, the specific shapes of the signal transmission components 5 and the hollow grooves 7 include but are not limited to rectangular shapes, and can also be other shapes, which will not be described in detail here, and all fall within the protection scope of the present invention.

[0097] Generally speaking, for a portable communication terminal, such as a computer, including an upper housing and a lower housing, when the antenna radiation structure is arranged on the side or top of the upper housing, the signal transmission component 5 is routed through the spatial position between the screen component on the upper housing and the upper housing, thereby improving the space utilization. Similarly, when the antenna radiation structure is arranged on the side or bottom of the lower housing, the signal transmission component 5 is routed through the spatial position between the control component on the lower housing and the lower housing, thereby making the antenna radiation structure and the computer structure more compact and the space utilization higher.

[0098] In the third antenna radiation structure, please refer to Fig.23 and Fig.24 , Fig.23 A schematic diagram of a third antenna radiation structure in an extended state provided by an embodiment of the present invention; Fig.24 A schematic diagram of the third antenna radiation structure in a retracted state provided in an embodiment of the present invention. The antenna radiation structure in this embodiment has at least two states, namely, an extended state and a retracted state. The housing 9 can be specifically made of metal. When extended outside the housing 9, the housing 9 cannot affect the radiation efficiency of the antenna. When retracted, the antenna cannot radiate electromagnetic waves even if an electromagnetic power signal is input to the radiator.

[0099] Specifically, the antenna radiation structure of this embodiment is movably arranged relative to the housing 9. Of course, the housing 9 has two opposite shells, and the antenna radiation structure is movably arranged between the two opposite shells. The extension and retraction of the antenna radiation structure can be controlled by the existing control program and the existing mechanical structure, which will not be repeated here. For details, reference can be made to the prior art. Thus, the antenna radiation structure has at least one position state so that the antenna radiation structure protrudes from the housing 9, so that the antenna radiation structure is exposed relative to the housing 9.

[0100] Similarly, please refer to Fig.25 The antenna radiation structure can be set on the side or top edge of the upper casing of the communication terminal, as well as the side or bottom edge of the lower casing of the communication terminal. It will not be described in detail here. For details, please refer to the setting methods of the first two antenna radiation structures.

[0101] Please refer to Fig.21 and Fig. 22, the floor layer 1 includes a metal plate embedded between two relative shells and in sliding contact with the two shells respectively, and the floor layer 1 maintains electrical connection with the casing 9, that is, during the movement of the antenna radiation structure relative to the casing 9, the floor layer 1 can always maintain electrical connection with the casing 9. Here, the floor layer 1 and the casing 9 are two relatively independent components and are not an integrated structure. One side of the dielectric layer 2 is clamped between the two floor layers 1, and the other side protrudes from the floor layer 1, and the blank area of ​​the protruding side of the dielectric layer 2 corresponding to the floor layer 1 is a hollow area 6. It can be predicted that the above three antenna radiation structures all have a hollow area 6, and the only difference is that the form of the hollow area 6 is different, but its function is equivalent, that is, to prevent the radiator from being electrically connected to the floor layer 1 and to provide a placement space for the radiator and the signal transmission component 5.

[0102] In addition, the clamping side of the dielectric layer 2 is located in the corresponding space of the two relative shells, and a plurality of periodic metal columns 10 are evenly distributed in the corresponding space of the two shells, and at least one metal column 10 passes through the clamping side of the dielectric layer 2 and is fixedly connected to the two shells; the arrangement of the metal columns 10 can keep the two floor layers 1 relatively fixed, and can also keep the dielectric layer 2 and the floor layer 1 fixedly connected, and at the same time, the metal columns 10 can also effectively reflect downward electromagnetic waves, thereby improving the overall radiation efficiency of the antenna.

[0103] In some embodiments, the protruding direction of the dielectric layer 2 is the direction facing the outside of the housing 9, and the first radiator 3 and the second radiator 4 are respectively provided on the opposite end faces of the protruding side of the dielectric layer 2, so that when the antenna radiation structure is extended, the first radiator 3 and the second radiator 4 are extended first. In addition, the plane where the radiator is located is parallel to the plane where the floor layer 1 is located, and the radiator is spaced from the housing 9 and the floor layer 1.

[0104] The third antenna radiation structure also has a hollow area 6, and the positions of the first radiator 3 and the second radiator 4 correspond to the hollow area 6. Fig.19 and Fig. 20 The first radiator 3 is provided with a signal transmission component 5, and a hollow groove 7 is provided at a position corresponding to the position of the floor layer 1 and the signal transmission component 5. The end of the signal transmission component 5 extends into the hollow groove 7, and the overall structure after the signal transmission component 5 is connected to the input signal port is spaced apart from the groove wall of the hollow groove 7. As for the specific arrangement of the signal transmission component 5 and the hollow groove 7, reference can be made to the arrangement of the first two antenna radiation structures, which will not be repeated here.

[0105] Similarly, the second radiator 4 is located in the hollow area 6 on the other side of the first radiator 3, but unlike the previous two antenna radiation structures, the second radiator 4 of this embodiment is a continuous structure of the metal plate on one side of the floor layer 1, and the second radiator 4 includes a first bent metal wire 47 and a second bent metal wire 48 respectively located on the left and right sides of the hollow area 6. The first bent metal wire 47 and the second bent metal wire 48 have different lengths and / or bending times to provide resonant radiation of different frequencies.

[0106] The dielectric layer 2 is also made of low-loss electromagnetic dielectric material and is located between the two radiator structures.

[0107] In addition, the overall length of the shape corresponding to the outline of the second radiator 4 is greater than the length of the first radiator 3, and within the length range of the first radiator 3, there are partial structures corresponding to the first bent metal wire 47 and the second bent metal wire 48, respectively, so that the second radiator 4 and the first radiator 3 generate electromagnetic waves of different frequencies to meet different working requirements.

[0108] Fig.26 A schematic diagram of simulation of scattering parameters of a third antenna radiation structure provided in an embodiment of the present invention; Fig. 27 A schematic diagram of a simulation of the total working efficiency of a third antenna radiation structure provided in an embodiment of the present invention; Fig.28 A schematic diagram of the simulation of the gain performance of the third antenna radiation structure provided by an embodiment of the present invention. It can be seen that when the antenna radiation structure is retracted into the housing 9, that is, when the relative distance in the figure is 4, the S11 parameter is 0 and the radiation efficiency is 0, which means that there is no signal radiation; when the antenna structure is extended out of the housing 9, that is, when the relative distance in the figure is 0, the extension height is 4 mm, and the embodiment can achieve the performance of S11 parameter less than -10dB in the S-band transmission frequency band 1980MHz-2010MHz and the receiving frequency band 2170MHz-2200MHz, and the overall radiation efficiency is greater than 70%, such as Fig.28 As shown, the average radiation gain reaches 4dBi, so that the antenna radiation structure of this embodiment achieves good communication transceiver performance. The above relative distance refers to the distance between the antenna radiation structure and the housing 9. In this embodiment, the relative distance after extension is recorded as 0.

[0109] Of course, the above-mentioned retracted distance includes but is not limited to 4 mm, and can be set according to actual conditions.

[0110] In addition, the present invention also discloses a communication terminal, which includes the above-mentioned antenna radiation structure, so that the communication terminal also has good communication transceiver performance and sky communication capability.

[0111] The above is a detailed introduction to an antenna radiation structure and a communication terminal provided by the present invention. This article uses specific examples to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method of the present invention and its core idea. It should be pointed out that for ordinary technicians in this technical field, without departing from the principle of the present invention, several improvements and modifications can be made to the present invention, and these improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. An antenna radiation structure, characterized in that: It is arranged on the outer wall of the casing (9) and exposed relative to the casing (9), and comprises: Dielectric layer (2); A radiator, arranged on the dielectric layer (2) and distributed at least on opposite sides of the dielectric layer (2), the radiator comprising a first radiator (3) located on one side of the dielectric layer (2) and a second radiator (4) located on the other side of the dielectric layer (2), the first radiator (3) and the second radiator (4) both being in fixed contact with the dielectric layer (2), and the first radiator (3) and the second radiator (4) being signal-connected; A floor layer (1) forms a ground system connected to or integrated with the housing (9), and a hollow area (6) is provided on the floor layer (1); A signal transmission component (5) is arranged in the hollow area (6), one side of the signal transmission component (5) is connected to the radiator, and the other side extends toward the floor layer (1) and is connected to an input signal port near the floor layer (1); In the first and second antenna radiation structures, the first radiator (3) is arranged on the side of the dielectric layer (2) facing the floor layer (1), the second radiator (4) is arranged on the other side of the dielectric layer (2) opposite to the dielectric layer (2), and the radiators are both located in the hollow area (6) of the floor layer (1) and exposed relative to the housing (9); The first radiator (3) in the first type of antenna radiation structure comprises a grid radiator with parallel grid lines (31) on both sides and a metal plane (32) located between two groups of the parallel grid lines (31), the opposite sides of the two groups of the parallel grid lines (31) are connected to the metal plane (32), and the two groups of the parallel grid lines (31) are symmetrically distributed about the metal plane (32); The first radiator (3) in the second type of antenna radiation structure comprises a metal sheet in contact with the surface of the dielectric layer (2), and the middle of the first radiator (3) is connected to the signal transmission component (5); the second radiator (4) comprises a metal strip in contact with the surface of the dielectric layer (2) and located at the edge of the outer wall of the housing (9), and the metal strip is symmetrical as a whole and has a periodic grid structure; The antenna radiation structure in the third type is movably arranged between two opposite shells of the casing (9); one side of the dielectric layer (2) is clamped between the floor layer (1) and the other side protrudes from the floor layer (1); the protruding direction of the dielectric layer (2) is the direction facing the outside of the casing (9); the first radiator (3) and the second radiator (4) are respectively arranged on the opposite end surfaces of the protruding side of the dielectric layer (2); the first radiator (3) is arranged at the hollow area (6); the second radiator (4) is located at the hollow area (6) on the other side of the first radiator (3); the second radiator (4) is a continuous structure of a metal plate on one side of the floor layer (1), and includes a first bent metal wire (47) and a second bent metal wire (48) respectively located on the left and right sides of the hollow area (6).

2. The antenna radiation structure according to claim 1, characterized in that: In the first type of antenna radiation structure, a connection structure for connecting the first radiator (3) and the second radiator (4) is provided on the metal plane (32).

3. The antenna radiation structure according to claim 2, characterized in that: The signal transmission component (5) is provided on the side of the metal plane (32) that is not the parallel grid lines (31), and a tuning component (8) for fixing and adjusting antenna impedance is provided on the other side of the metal plane (32) that is opposite to the signal transmission component (5).

4. The antenna radiation structure according to claim 1, characterized in that: In the second antenna radiation structure, the second radiator (4) is connected to the housing (9), and the length of the second radiator (4) is greater than the length of the first radiator (3).

5. The antenna radiation structure according to claim 4, characterized in that: The metal strip comprises a central resonant metal strip (41) located at the center, and a first metal narrow strip (42), a first resonant metal strip (43), a second metal narrow strip (44), a second resonant metal strip (45), and a third metal narrow strip (46) are sequentially connected to one side from the central resonant metal strip (41), and the lengths of the central resonant metal strip (41), the first resonant metal strip (43), and the second resonant metal strip (45) decrease in sequence.

6. The antenna radiation structure according to any one of claims 1 to 5, characterized in that: In the first and second types of antenna radiation structures, the hollow area (6) is opened on the surface of the floor layer (1) and extends in a direction away from the housing (9) to the edge of the outer wall of the housing (9); the antenna radiation structure is arranged in the hollow area (6) and is fixedly connected to a supporting carrier inside the housing (9); The hollow area (6) is a rectangular slot, and the length of the rectangular slot is greater than the length of the antenna radiation structure. A hollow groove (7) is provided at a position corresponding to the hollow area (6) and the signal transmission component (5). The end of the signal transmission component (5) extends into the hollow groove (7). The overall structure after the signal transmission component (5) is connected to the input signal port is spaced apart from the wall of the hollow groove (7). The signal transmission component (5) is a metal belt parallel to the surface of the floor layer (1); the metal belt is rectangular; the hollow groove (7) is a rectangular groove matching the metal belt; the signal transmission component (5) is located in the plane where the surface of the floor layer (1) is located.

7. The antenna radiation structure according to claim 1, characterized in that: In the third type of antenna radiation structure, there is at least one position state in which the antenna radiation structure is protruded from the housing (9), so that the antenna radiation structure is exposed relative to the housing (9).

8. The antenna radiation structure according to claim 7, characterized in that: The floor layer (1) comprises a metal plate embedded between two opposing shells and in sliding contact with the two shells respectively; the floor layer (1) is electrically connected to the housing (9); and a blank area on the protruding side of the dielectric layer (2) corresponding to the floor layer (1) is the hollow area (6); The clamping side of the dielectric layer (2) is located in a corresponding space relative to the shell, and a plurality of periodic metal columns (10) are evenly distributed in the corresponding spaces of the two shells, and at least one of the metal columns (10) penetrates the clamping side of the dielectric layer (2) and is fixedly connected to the two shells.

9. The antenna radiation structure according to claim 8, characterized in that: The plane where the radiator is located is parallel to the plane where the floor layer (1) is located, and the radiator is spaced apart from the casing (9) and the floor layer (1).

10. The antenna radiation structure according to claim 9, characterized in that: The signal transmission component (5) is provided on the first radiator (3); a hollow groove (7) is provided at a position corresponding to the position of the floor layer (1) and the signal transmission component (5); an end of the signal transmission component (5) extends into the hollow groove (7); and the overall structure after the signal transmission component (5) is connected to the input signal port is spaced apart from the groove wall of the hollow groove (7).

11. The antenna radiation structure according to claim 10, characterized in that: The first bent metal wire (47) and the second bent metal wire (48) have different lengths and / or different bending times to provide resonant radiation of different frequencies.

12. A communication terminal, characterized in that: It comprises the antenna radiation structure as described in any one of claims 1-11.

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