Signal auxiliary device and charger

Abstract

The utility model provides a signal auxiliary device and a charger, the signal auxiliary device comprises a shell and a radiator, the shell is configured to be detachably connected to a charging port of an intelligent terminal for a user to hold, the radiator is arranged in the shell, and the radiator is arranged in the shell. The radiator is configured to absorb electromagnetic waves emitted by the intelligent terminal and generate an electromagnetic field of secondary radiation. When the signal auxiliary device is externally connected to the intelligent terminal, the purpose of signal enhancement is achieved, the internal stacking structure of the intelligent terminal does not need to be changed at all, the improvement difficulty and cost are reduced, and the practicability is higher.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of charging, in particular to a signal auxiliary device and a charger. BACKGROUND

[0002] With the rapid development of more stable and lower latency networks, mobile games have become the main revenue growth point in the entertainment track. In the process of users using mobile phones, the proportion of horizontal screen scenarios is increasing. At present, most smart terminals set the antenna at the bottom position. When the user is in horizontal screen, the user's hand will absorb the electromagnetic waves emitted by the antenna, which will reduce the efficiency of the antenna and affect the user's experience of using the mobile phone in horizontal screen.

[0003] In the process of conceiving and implementing the present application, the inventors found that in some schemes, the number of smart terminal antennas is increased to improve the radiation efficiency of the smart terminal, and in addition, the antenna position is changed to avoid the human body from blocking the antenna radiation. However, these schemes require a large degree of improvement of the smart terminal, which is high in complexity and cost.

[0004] The foregoing narrative is to provide general background information and does not necessarily constitute the prior art. CONTENT OF THE UTILITY MODEL

[0005] The present application provides a signal auxiliary device and a charger, which can achieve the purpose of signal enhancement when externally connected to a smart terminal, and does not have any modification to the internal stacking structure of the smart terminal, thereby reducing the improvement difficulty and cost.

[0006] In order to achieve the above-mentioned purpose, the present application adopts the following technical scheme:

[0007] The present application provides a signal auxiliary device, comprising: a shell configured to be detachably connected to a charging port of a smart terminal for a user to hold; and a radiator provided in the shell and configured to absorb electromagnetic waves emitted by the smart terminal and generate a secondary radiation electromagnetic field.

[0008] Optionally, the radiator comprises at least two radiation units arranged on the outer surface of the shell.

[0009] Optionally, the shell is at least partially a magnetic conducting member, and the radiator comprises at least two radiation units arranged inside the shell.

[0010] Optionally, the at least two radiation units are arranged in a straight line or in a matrix.

[0011] Optionally, each radiation unit is arranged around the shell.

[0012] Optionally, the radiation unit is configured as a parasitic patch.

[0013] Optionally, the at least two radiation units are arranged conformally with the shell.

[0014] Optionally, the shell is provided with a first plug-in part for connecting with a charging port of the intelligent terminal.

[0015] Optionally, the shell is provided with a second plug-in part for connecting with a plug-in port of a charging adapter.

[0016] Optionally, the signal auxiliary device further comprises a charging circuit board, which is arranged inside the shell and electrically connected with the first plug-in part and the second plug-in part respectively.

[0017] Optionally, the first plug-in part and the second plug-in part are arranged on different surfaces of the shell and are configured to face different directions.

[0018] Optionally, the shell is in a square shape as a whole.

[0019] Optionally, the first plug-in part is arranged on the front of the shell.

[0020] Optionally, the second plug-in part is arranged on the side of the shell.

[0021] Optionally, the first plug-in part is configured as a USB connector.

[0022] Optionally, the second plug-in part is configured as a USB connector.

[0023] The present application provides a charger comprising the signal auxiliary device described above.

[0024] The signal auxiliary device of the present application is detachably connected to the charging port of the intelligent terminal for the user to hold, and the radiation body is arranged inside and / or on the outer surface of the shell. On the one hand, the shell is connected to the charging port of the intelligent terminal for the user to hold in the horizontal screen state, so that the user's hand is away from the bottom of the intelligent terminal in the horizontal screen state, the distance between the user's hand and the bottom antenna is increased, the loss of the antenna radiation wave by the human body is reduced, and the communication efficiency of the intelligent terminal is improved. On the other hand, the radiation body is arranged on the shell, and the electromagnetic wave generated by the antenna of the intelligent terminal can be radiated on the radiation body again, further improving the radiation efficiency of the antenna of the intelligent terminal, achieving the purpose of signal enhancement, and without any modification to the internal stacked structure of the intelligent terminal, reducing the improvement difficulty and cost. BRIEF DESCRIPTION OF DRAWINGS

[0025] The accompanying drawings, which are incorporated herein and constitute part of the specification, illustrate embodiments consistent with the application and, together with the description, further serve to explain the principles of the application. In order to more clearly illustrate the technical solutions in the embodiments of the application, the drawings needed to be used in the following embodiment description will be briefly introduced. Obviously, those skilled in the art can further obtain other drawings from these drawings without any creative effort.

[0026] Figure 1 A schematic diagram of a signal auxiliary device in an embodiment of the application;

[0027] Figure 2 A schematic diagram of the connection relationship between the signal auxiliary device and the intelligent terminal in an embodiment of the application;

[0028] Figure 3 A schematic diagram of a charger in an embodiment of the application;

[0029] Figure 4 A comparison diagram of the influence of the signal auxiliary device on the reflection coefficient in an embodiment of the application;

[0030] Figure 5 A comparison diagram of the influence of the signal auxiliary device on the antenna efficiency in an embodiment of the application.

[0031] Explanation of reference signs:

[0032] 100, signal auxiliary device; 110, shell; 112, first plug-in part; 114, second plug-in part; 120, radiator; 122, radiation unit; 130, charging circuit board; 200, intelligent terminal; 300, charger; 310, charging adapter; 320, charging wire.

[0033] The implementation, functional features and advantages of the application will be further described with reference to the embodiments and the accompanying drawings. The above drawings have shown the specific embodiments of the application, and will be described in more detail hereinafter. These drawings and the written description are not intended to limit the scope of the concept of the application in any way, but to illustrate the concept of the application for those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0034] The exemplary embodiments will be described in detail herein with reference to the accompanying drawings. Unless otherwise indicated, the same numbers on different drawings represent the same or similar elements. The following detailed description does not limit the application to only the disclosed embodiments, but instead the application is capable of other embodiments and of being practiced or being carried out in various ways. Examples of specific implementations are described in detail herein.

[0035] It should be noted that, as used in this document, the terms "include," "includes," or "including" mean including but not limited to, and the meaning is not limited to including only. The terms "comprise," "comprises," or "comprising" or "include," "includes," or "including" or "contain," "contains," or "containing" are used in the inclusive, rather than exclusive, sense so that a process, method, article, or apparatus that includes several elements, of which several of those elements can be present, or that includes several steps, of which several of those steps can be performed, or that includes several components, of which several of those components can be present, is covered by the phrase. Unless otherwise expressly stated, the use of the term "or" in the claims should not be understood as having an exclusive or cumulative meaning. Unless otherwise indicated herein, the use herein of the terms "comprises", "comprising", "includes", "including" or "has", "having" means, inter alia, "including but not limited to".

[0036] It should be understood that, although terms such as first, second, third, etc. can be used herein to describe various information, the information should not be limited by these terms. These terms are only used to distinguish one type of information from another type of information. For example, first information can also be referred to as second information without departing from the scope of the present document, and similarly, second information can also be referred to as first information. Depending on the context, the word "if' as used herein can be interpreted to mean "when" or "upon" or "in response to determining". Also, as used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context indicates otherwise. It will be further understood that the terms "comprises", "comprising", "includes", "including" or "has", "having" means, inter alia, "including but not limited to" the presence of one or at least two other features, steps, operations, elements, components, items, kinds, and / or groups, unless otherwise indicated herein. The terms "or", "and / or", "including at least one of the following" and the like as used herein can be interpreted to be inclusive or to mean any one or any combination of the listed items. For example, "including at least one of: A, B, C" means "any one of the following: A; B; C; A and B; A and C; B and C; A, B and C". As another example, "A, B, or C" or "A, B, and / or C" means "any one of the following: A; B; C; A and B; A and C; B and C; A, B and C". This exception is only applicable where a combination of elements, functions, steps or operations are inherently mutually exclusive by their nature.

[0037] Depending on the context, the word "if' as used herein can be interpreted to mean "when" or "upon" or "in response to determining" or "in response to detecting". Similarly, depending on the context, the phrase "if determined" or "if detecting (a stated condition or event)" can be interpreted to mean "when determined" or "in response to determining" or "when detecting (a stated condition or event)" or "in response to detecting (a stated condition or event)".

[0038] It should be understood that the embodiments described herein are only for the purpose of explaining the present application and are not intended to limit the present application.

[0039] In the following description, the suffixes such as "module", "part", or "unit" used for components are merely intended for facilitating explanation of the present application and are by no means specific thereto. Thus, "module", "part", or "unit" can be used interchangeably.

[0040] Since most intelligent terminals set the antenna at the bottom position, when the user uses the intelligent terminal in the horizontal screen, the hand is at the bottom of the intelligent terminal, which will absorb the electromagnetic wave emitted by the antenna, so that the antenna efficiency is reduced, and the user's experience of using the intelligent terminal in the horizontal screen is affected. There are two common solutions at present, one is to increase the number of intelligent terminal antennas to improve the radiation efficiency of the intelligent terminal, and the other is to change the antenna position to avoid the human body shielding the antenna radiation. But these solutions need to improve the intelligent terminal to a large extent, which has high complexity and cost. Therefore, whether the communication performance of the bottom antenna of the intelligent terminal in the horizontal screen can be improved at low cost has become a difficult problem to be solved.

[0041] In order to overcome the defects in the prior art, the present application provides a signal auxiliary device, the shell of the signal auxiliary device is detachably connected to the charging port of the intelligent terminal for the user to hold, and the radiator is arranged in the interior and / or the outer surface of the shell. On the one hand, the shell is connected to the charging port of the intelligent terminal for the user to hold in the horizontal screen state, so that the user's hand is away from the bottom of the intelligent terminal in the horizontal screen state, the distance between the user's hand and the bottom antenna is increased, the loss of the antenna radiation wave by the human body is reduced, and the communication efficiency of the intelligent terminal is improved. On the other hand, the radiator is arranged on the shell, the electromagnetic wave generated by the antenna of the intelligent terminal can be radiated on the radiator again, the radiation efficiency of the antenna of the intelligent terminal is further improved, the purpose of signal enhancement is achieved, and the internal stacking structure of the intelligent terminal is not changed, so the improvement difficulty and cost are reduced.

[0042] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the following will combine the embodiments of the present application with the drawings for Figures 1 to 5 The technical scheme in the embodiments of the present application is described clearly and completely, obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application. In the case of no conflict, the embodiments described below and the features in the embodiments can be combined with each other.

[0043] The signal auxiliary device 100 provided in the present application can include a shell 110 and a radiator 120. The shell 110 is configured to be detachably connected to the charging port of the smart terminal 200 for the user to hold. The radiator 120 is arranged on the shell 110, and the radiator 120 is configured to absorb the electromagnetic wave emitted by the smart terminal 200 and generate a secondary radiated electromagnetic field.

[0044] Generally, the charging port of the smart terminal 200 is located at the bottom of the whole. In the present embodiment, when the shell 110 is inserted into the charging port of the smart terminal 200, the shell 110 is also located at the bottom of the smart terminal 200 as a whole, so that the shell 110 can be naturally held by the user when the user uses the smart terminal 200 in the horizontal screen state. Such design makes the user's hand away from the antenna at the bottom of the smart terminal 200 when the user uses the smart terminal 200 in the horizontal screen state, reduces the absorption loss of the human body to the antenna radiation wave, and improves the communication efficiency of the smart terminal 200.

[0045] In the present embodiment, the radiator 120 is arranged on the shell 110, and the radiator 120 is configured to absorb the electromagnetic wave emitted by the smart terminal 200 and generate a secondary radiated electromagnetic field. When the antenna at the bottom of the smart terminal 200 works, it will radiate electromagnetic waves. After the radiator 120 receives the electromagnetic waves, it will again excite surface current to form a time-varying electromagnetic field, which equivalently increases the radiation area of the antenna and improves the radiation efficiency of the antenna, achieving the purpose of signal enhancement.

[0046] That is, the signal auxiliary device 100 of the present application improves the communication performance of the antenna at the bottom of the smart terminal 200 in the horizontal screen scenario at a low cost from two aspects. On the one hand, the shell 110 is connected to the charging port of the smart terminal 200 for the user to hold in the horizontal screen state, so that the user's hand is away from the bottom of the smart terminal 200 in the horizontal screen state, the distance between the user's hand and the bottom antenna is increased, the loss of the human body to the antenna radiation wave is reduced, and the communication efficiency of the smart terminal 200 is improved. On the other hand, the radiator 120 is arranged on the shell 110, and the electromagnetic wave generated by the antenna of the smart terminal 200 can be secondarily radiated on the radiator 120, further improving the radiation efficiency of the antenna of the smart terminal 200, achieving the purpose of signal enhancement.

[0047] Optionally, the scheme for enhancing the communication signal in the present application is realized by externally connecting the signal auxiliary device 100, and there is no any modification to the internal stacked structure of the smart terminal 200, which reduces the improvement difficulty and cost, and is more practical.

[0048] Optionally, the secondary radiation can be realized when the radiator 120 is close to the bottom of the intelligent terminal 200. Optionally, the shell 110 and the intelligent terminal 200 can be mechanically connected to form an integrated whole which is convenient for the user to hold, so that the purpose of signal enhancement can be realized.

[0049] Optionally, the shell 110 and the intelligent terminal 200 can be connected by magnetic attraction, clamping, sleeving, and plugging, and the specific connection mode is not particularly limited in the embodiment.

[0050] Optionally, the radiator 120 includes at least two radiation units 122 which are arranged on the outer surface of the shell 110. In this way, the at least two radiation units 122 can directly receive the electromagnetic waves generated by the intelligent terminal 200 and directly radiate outward on the outside of the shell without being blocked in the receiving and outward radiating processes.

[0051] Optionally, the shell 110 is at least partially a magnetic conducting member, and the radiator 120 includes at least two radiation units 122 which are arranged in the interior of the shell 110.

[0052] Optionally, the shell 110 is at least partially a magnetic conducting member, and the at least two radiation units 122 are arranged in the interior of the shell 110, so that the purpose of hiding the radiation units 122 can be realized, and the shielding effect of the shell 110 on the radiation units 122 can be reduced or avoided.

[0053] Optionally, the magnetic conducting member in the shell 110 can be made of a metal soft magnetic material (such as pure iron and low-carbon steel, iron-silicon alloy, iron-cobalt alloy, etc.), ferrite magnetic material, magnetic powder core material, etc.

[0054] Optionally, the at least two radiation units 122 are arranged in the shell 110 in a linearly spaced manner or in a matrix arrangement.

[0055] In this way, the receiving area and the radiating area of the radiator 120 can be increased, the secondary radiation effect is higher, and the improvement effect is more obvious.

[0056] Optionally, the at least two radiation units 122 can be arranged in a one-dimensional linearly spaced manner. Optionally, the at least two radiation units 122 are arranged in the shell 110 in a transverse direction of the intelligent terminal 200. Optionally, the at least two radiation units 122 are arranged in the shell 110 in a longitudinal direction of the intelligent terminal 200.

[0057] Optionally, the at least two radiation units 122 can also be arranged in a matrix. Optionally, the at least two radiation units 122 are arranged in an N x M array, wherein N radiation units 122 are arranged along a lateral direction of the smart terminal 200 and M radiation units 122 are arranged along a longitudinal direction of the smart terminal 200. Optionally, N and M are positive integers.

[0058] Optionally, the number of the radiation units 122 is not particularly limited. Optionally, the size and shape of each radiation unit 122 can also be the same. Optionally, each radiation unit 122 can be arranged in a strip shape, a rectangular shape, a square shape, a circular shape, a ring shape, a triangular shape, etc. The specific shape and size of the radiation unit 122 are not particularly limited.

[0059] Optionally, each radiation unit 122 is arranged around the shell 110.

[0060] Optionally, each radiation unit 122 is arranged around the shell 110, so that the surface of the shell 110 around which the radiation unit 122 is arranged has the ability of secondary radiation, further enhancing the signal amplification capability of the signal auxiliary device 100.

[0061] Optionally, the at least two radiation units 122 can be arranged in a straight line, and each radiation unit 122 is arranged around the outer surface of the shell 110. Optionally, the at least two radiation units 122 are arranged along a lateral direction of the smart terminal 200, and each radiation unit 122 is arranged around the shell 110 along a longitudinal direction of the smart terminal 200.

[0062] Optionally, each radiation unit 122 can also be arranged in a spiral.

[0063] Optionally, the radiation unit 122 is configured as a parasitic patch.

[0064] Optionally, the parasitic patch is an auxiliary patch structure that can improve the performance of the antenna. The parasitic patch is not directly connected to the feed network, but works through electromagnetic coupling with the main radiation patch or other radiation bodies 120. Optionally, when the antenna of the smart terminal 200 works, electromagnetic waves are generated, and the parasitic patch receives the electromagnetic waves and then excites surface currents again to form a time-varying electromagnetic field, which equivalently increases the radiation area of the antenna and improves the radiation efficiency of the antenna, achieving the purpose of signal enhancement.

[0065] Optionally, the at least two radiation units 122 are conformally arranged with the shell 110.

[0066] Optionally, at least two radiating elements 122 are conformally configured with the housing 110, meaning that at least two radiating elements 122 maintain the same shape as the housing 110, particularly conforming to the outer or inner surface of the housing 110. This ensures that the radiator 120 does not affect the appearance design of the housing 110, and that the conformally configured radiating elements 122 fully utilize the surface space of the housing 110 without requiring additional installation space, thus improving the effective load capacity of the housing 110.

[0067] Optionally, the radiator 120 can also be configured to ensure that the reflection coefficient of the antenna of the smart terminal 200 in the 1710MHz to 2700MHz frequency band is below -4.5. The high-frequency antenna reflection coefficient and efficiency of the smart terminal 200 when the signal auxiliary device 100 is connected are as follows: Figure 4 and Figure 5 As shown. After inserting the adapter, the overall efficiency of the mid-to-high frequency antenna at the bottom of the phone is improved by 15%-90%. The phone's performance in landscape mode is improved by 15%-90%.

[0068] Alternatively, the shape of the housing 110 can also be designed to be easy for the user to hold, for example, according to the principles of hand ergonomics, to increase the user's comfort when holding the housing 110.

[0069] Optionally, the housing 110 is provided with a first plug-in portion 112 for connecting to the charging port of the smart terminal 200. The housing 110 is provided with a second plug-in portion 114 for connecting to the plug interface of the charging adapter 310. The signal assist device 100 may further include a charging circuit board 130, which is disposed inside the housing 110 and electrically connected to the first plug-in portion 112 and the second plug-in portion 114, respectively.

[0070] Optionally, the signal enhancement device in this embodiment can also be used as an adapter for the charger 300 for charging.

[0071] Optionally, since the first connector 112 can be connected to the charging port of the smart terminal 200, and the second connector 114 (via the charging cable 320) can be connected to the connector of the charging adapter 310, the charging circuit board 130 is disposed inside the housing 110, and the charging circuit board 130 is electrically connected to the first connector 112 and the second connector 114 respectively. With this design, when the charging adapter 310 is connected to a power source, the smart terminal 200 can be charged through the signal enhancement device, enriching the functionality of the signal enhancement device.

[0072] Optionally, when the smart terminal 200 is used in the horizontal screen state, the shell 110 increases the distance from the smart terminal 200 while being held by the user's hand, and the radiator 120 on the shell 110 can improve the radiation efficiency of the antenna of the smart terminal 200. Therefore, when the user uses the smart terminal 200 in the horizontal screen state while charging, the purpose of signal enhancement can also be achieved.

[0073] Optionally, the first plug-in part 112 and the second plug-in part 114 are arranged on different surfaces of the shell, and the first plug-in part 112 and the second plug-in part 114 are configured to face different directions.

[0074] Optionally, the first plug-in part 112 is connected with the charging port of the smart terminal 200, and the charging port of the smart terminal 200 is usually arranged at the bottom of the smart terminal 200. The first plug-in part 112 and the second plug-in part 114 are configured to face different directions. Therefore, the second plug-in part 114 does not directly face the direction of the charging port of the smart terminal 200.

[0075] Since the second plug-in part 114 can be connected with the plug-in port of the charging adapter 310 through the charging line 320, when the user holds the shell 110 while charging in the horizontal screen state, the hand position is located on the shell 110 and faces the direction of the charging port. Therefore, the second plug-in part 114 is arranged to not directly face the direction of the charging port of the smart terminal 200, which can avoid interference between the charging line 320 and the user's hand when charging in the horizontal screen state, and further improve the comfort of the user holding the shell 110 while charging.

[0076] Optionally, the shell 110 is in the shape of a square as a whole. The first plug-in part 112 is arranged on the front of the shell 110. The second plug-in part 114 is arranged on the side of the shell 110.

[0077] Optionally, the interference between the charging line 320 and the user's hand during charging can be completely avoided. The second plug-in part 114 is arranged on the side of the shell 110. When charging in the horizontal screen state, the charging line 320 can naturally pass through the upper side or the lower side of the user's hand, which improves the comfort of the user holding the shell 110 while charging.

[0078] Optionally, the first plug-in part 112 is configured as a USB connector. The second plug-in part 114 is configured as a USB connector.

[0079] The application also provides a charger 300, which can include the signal auxiliary device 100 in at least one of the above embodiments.

[0080] Optionally, the charger 300 can further include a charging adapter 310 and a charging wire 320. The charging adapter 310 can be connected to a power source, one end of the charging wire 320 is plugged into the plug interface of the charging adapter 310, and the other end of the charging wire 320 is plugged into the second plug interface 114 of the signal auxiliary device 100, the second plug interface 114 of the signal auxiliary device 100 is electrically connected to the charging circuit board 130, the charging circuit board 130 is electrically connected to the first plug interface 112, the first plug interface 112 can be plugged into the charging port of the smart terminal 200 and is electrically connected to the smart terminal 200, so as to realize charging.

[0081] Optionally, since the shell 110 of the signal auxiliary device 100 is connected to the charging port of the smart terminal 200, the user can hold the smart terminal 200 in the horizontal screen state, so that the user's hand is away from the bottom of the smart terminal 200 in the horizontal screen state, the distance between the user's hand and the bottom antenna is increased, the loss of the antenna radiation wave by the human body is reduced, the communication efficiency of the smart terminal 200 is improved, and the radiator 120 is arranged on the shell 110, the electromagnetic wave generated by the antenna of the smart terminal 200 can be radiated on the radiator 120 again, the radiation efficiency of the antenna of the smart terminal 200 is further improved, and the purpose of signal enhancement is achieved. Therefore, when the smart terminal 200 is charged by the charger 300 of the present application, not only the comfort of the user holding the smart terminal 200 can be improved, but also the purpose of signal enhancement can be achieved.

[0082] The above-mentioned sequence numbers of the embodiments of the present application are only for description, and do not represent the advantages and disadvantages of the embodiments.

[0083] The steps in the method of the embodiments of the present application can be adjusted, combined and reduced in sequence according to actual needs.

[0084] The units in the device of the embodiments of the present application can be combined, divided and reduced according to actual needs.

[0085] In the present application, for the same or similar term concept, technical scheme and / or application scene description, generally only the first time is described in detail, and for the sake of brevity, the repeated description is generally not repeated, and for the understanding of the technical scheme of the present application, the same or similar term concept, technical scheme and / or application scene description which is not described in detail can be referred to the related description before.

[0086] In the present application, the description of each embodiment has its own emphasis, and the parts not described or recorded in a certain embodiment can be referred to the related description of other embodiments.

[0087] Any technical features of the technical solutions of the present application can be combined. In order to make the description simple, all possible combinations of the technical features in the above-mentioned embodiments are not described, however, as long as the combinations of the technical features do not contradict, it should be considered that they are within the scope of the present application.

[0088] The above is only the preferred embodiment of the present application, and does not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation using the content of the present application specification and drawings, or direct or indirect application in other related technical fields, is also included in the patent protection scope of the present application.

Claims

1. A signal assist device (100), characterized in that, include: A housing (110) is configured to be detachably connected to the charging port of a smart terminal (200); A radiator (120) is disposed in the housing (110) and is configured to absorb electromagnetic waves emitted by the smart terminal (200) and generate a secondary radiated electromagnetic field.

2. The signal assist device (100) according to claim 1, characterized in that, The radiator (120) includes at least two radiating elements (122), and the at least two radiating elements (122) are disposed on the outer surface of the housing (110); and / or, The housing (110) is at least partially a magnetic conductor, and the radiator (120) includes at least two radiating units (122), with at least two of the radiating units (122) disposed inside the housing (110).

3. The signal assist device (100) according to claim 2, characterized in that, At least two of the said radiating elements (122) are arranged at linear intervals or in a matrix; and / or, The radiating element (122) is arranged around the housing (110).

4. The signal assist device (100) according to claim 2, characterized in that, The radiating unit (122) is configured as a parasitic patch.

5. The signal assist device (100) according to claim 2, characterized in that, At least two of the radiation units (122) are conformally disposed with the housing (110).

6. The signal assist device (100) according to any one of claims 1 to 5, characterized in that, The housing (110) is provided with a first plug-in portion (112) for connecting to the charging port of the smart terminal (200); The housing (110) is provided with a second plug-in portion (114) for connecting to the plug-in interface of the charging adapter (310); The signal assist device (100) further includes a charging circuit board (130), which is disposed inside the housing (110) and is electrically connected to the first plug-in portion (112) and the second plug-in portion (114) respectively.

7. The signal assist device (100) according to claim 6, characterized in that, The first plug-in portion (112) and the second plug-in portion (114) are disposed on different surfaces of the housing (110), and the first plug-in portion (112) and the second plug-in portion (114) are configured to face different directions.

8. The signal assist device (100) according to claim 7, characterized in that, Includes at least one of the following: The shell (110) is generally square; The first insertion part (112) is disposed at the front of the housing (110); The second plug-in portion (114) is disposed on the side of the housing (110).

9. The signal assist device (100) according to claim 6, characterized in that, The first connector (112) is configured as a USB connector; and / or, The second plug-in portion (114) is configured as a USB connector.

10. A charger (300), characterized in that, Includes the signal assist device (100) according to any one of claims 1 to 9.

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