External communication signal amplifier and communication system

Abstract

The application discloses an external communication signal amplifier and a communication system, which comprise a shell and a wireless signal relay module integrated in the shell; the shell has a first end part and a second end part arranged oppositely, the first end part is configured to be close to an antenna area of a communication terminal; the wireless signal relay module comprises a receiving unit and a transmitting unit electrically connected, and a radio frequency gain processing unit electrically connected with the receiving unit and the transmitting unit respectively; the receiving unit is integrated in the second end part of the shell, and the transmitting unit is integrated in the first end part of the shell; the mutual interference between a receiving link and a transmitting link can be reduced by using a space separation mode, the amplified signal can be coupled to the antenna area of the communication terminal, so that the communication quality in a weak signal scene is improved; meanwhile, the signal power is improved mainly by the radio frequency gain processing unit, a complex protocol processing core is not needed to be configured, and the external communication signal amplifier with simple structure and low cost is realized.

Description

Technical Field

[0001] This invention relates to the field of communication technology, and in particular to an external communication signal amplifier and communication system. Background Technology

[0002] With the rapid development of mobile communication technology and the widespread adoption of smart terminals, users' demands for high-speed, stable, and ubiquitous wireless communication experiences are increasing. However, in practical applications, due to the influence of complex electromagnetic environments such as building obstructions, distance from base stations, or being located in signal edge areas, communication terminals (such as smartphones and tablets) often face problems such as weak signals, degraded call quality, and data transmission interruptions, seriously affecting the user experience. Especially in typical weak signal scenarios such as indoors, underground spaces, suburbs, and inside mobile vehicles, how to effectively enhance the communication signal between the terminal and the network has become a common and urgent technical need.

[0003] In existing technologies, to address the weak signal problem in communication terminals, common methods to improve communication quality include optimizing antenna layout within the terminal, adding radio frequency processing modules, or using independently designed signal enhancement devices to amplify and relay communication signals. While these technologies can improve signal transmission and reception capabilities to some extent, from the perspective of external accessories, existing solutions generally suffer from insufficient adaptability to weak signal environments. Some external signal enhancement devices do not adequately consider the mutual interference between the receiving and transmitting paths in their structural layout, leading to increased interference and insignificant enhancement effects during signal reception, amplification, and retransmission. Consequently, they are unable to effectively improve the signal reception and transmission quality of communication terminals in weak signal environments.

[0004] Therefore, it is necessary to improve existing technologies to solve the technical problem of communication performance in weak signal environments without changing the internal hardware structure of the communication terminal. Summary of the Invention

[0005] The purpose of this invention is to provide an external communication signal amplifier and communication system to solve the above-mentioned technical problems.

[0006] To achieve this objective, the present invention adopts the following technical solution: An external communication signal amplifier includes a housing and a wireless signal relay module integrated into the housing; The housing has a first end and a second end that are disposed opposite to each other, and the first end is configured to be close to the antenna region of the communication terminal. The wireless signal relay module includes a receiving unit and a transmitting unit electrically connected to each other, and a radio frequency gain processing unit electrically connected to the receiving unit and the transmitting unit respectively. The receiving unit is integrated at the second end of the housing and is used to receive downlink radio frequency signals to be forwarded from remote network nodes and / or uplink radio frequency signals to be forwarded from communication terminals. The radio frequency gain processing unit is used to perform power boosting processing on the uplink radio frequency signal to be forwarded and / or the downlink radio frequency signal to be forwarded. The transmitting unit is integrated at the first end of the housing and is used to radiate the downlink radio frequency signal amplified by the radio frequency gain processing unit to the communication terminal, and / or to radiate the uplink radio frequency signal amplified by the radio frequency gain processing unit to the remote network node.

[0007] Optionally, the RF gain processing unit includes a signal conditioning unit and a gain control unit; The signal conditioning unit is used to perform amplitude enhancement processing on the uplink radio frequency signal to be forwarded and / or the downlink radio frequency signal to be forwarded. The gain control unit is used to limit the output power of the radio frequency gain processing unit within a preset range.

[0008] Optionally, the signal conditioning unit includes an uplink conditioner and a downlink conditioner; The uplink conditioner is used to amplify the uplink radio frequency signal to be forwarded from the communication terminal. The downlink conditioner is used to amplify the downlink radio frequency signal to be forwarded from the remote network node.

[0009] Optionally, the uplink conditioner includes an isolation device and a gain processor; The isolation device is used to isolate the receiving path from the transmitting path in order to suppress feedback coupling and self-oscillation; The gain processor is used to perform amplitude enhancement processing on the radio frequency signals of the corresponding link.

[0010] Optionally, the receiving unit includes a receiving antenna, and the transmitting unit includes a transmitting antenna; The receiving antenna is disposed at the second end of the housing, and the transmitting antenna is disposed at the first end of the housing; The receiving antenna and the transmitting antenna are impedance matched based on the operating frequency band of the communication terminal.

[0011] Optionally, the external communication signal amplifier also includes an independent power supply module, which includes an energy storage unit and a power supply control unit electrically connected to the wireless signal relay module. The power supply control unit is used to control the opening or closing of the wireless signal relay module.

[0012] Optionally, the power supply control unit includes an operation switch, which allows the user to actively switch the operating state of the wireless signal relay module.

[0013] Optionally, the operating switch is an inductive switch; The inductive switch is located in a preset trigger area on the surface of the housing, and outputs a start / stop control signal when the user touches, blocks light from, or approaches the preset trigger area.

[0014] The present invention also provides a communication system, including a communication terminal and an external communication signal amplifier as described above; The external communication signal amplifier is detachably disposed on the outside of the communication terminal, and the first end of the housing is disposed corresponding to the antenna area of ​​the communication terminal.

[0015] Optionally, the communication terminal is any one of a smartphone, tablet computer, or portable mobile hotspot device; The external communication signal amplifier is constructed in any of the following forms: protective shell, back clip shell, or attached shell.

[0016] Compared with the prior art, the present invention has the following beneficial effects: The working principle of the present invention is as follows: In use, the first end of the housing is first positioned near the antenna area of ​​the communication terminal, so that the receiving unit integrated in the second end preferentially receives the downlink RF signal to be forwarded from the remote network node and / or the uplink RF signal to be forwarded from the communication terminal; then, the received RF signal is input to the RF gain processing unit, which performs power boosting processing on the corresponding uplink RF signal and / or downlink RF signal; the RF signal after power boosting is then transmitted to the transmitting unit integrated in the first end, and transmitted to the communication terminal by the transmitting unit. The amplified downlink radio frequency signal and / or amplified uplink radio frequency signal radiated to the remote network node form a wireless signal enhancement relay transmission path between the communication terminal and the remote network node, thereby improving the signal transmission and reception capabilities of the communication terminal in weak signal environments. Compared with existing technologies, this solution, through the structural layout of the receiving unit and the transmitting unit, can reduce mutual interference between the receiving link and the transmitting link by using spatial separation, thereby improving the stability and effectiveness of radio frequency signal relay amplification. On the other hand, it can make the amplified signal more targeted to the antenna area of ​​the communication terminal, thereby improving the communication quality in weak signal scenarios. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] The structures, proportions, sizes, etc., shown in the accompanying drawings of this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed in the specification, and are not intended to limit the conditions under which the present invention can be implemented. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and objectives that the present invention can produce, should still fall within the scope of the technical content disclosed in the present invention.

[0019] Figure 1 This is a schematic diagram of one type of housing structure for the external communication signal amplifier in this embodiment.

[0020] Figure 2 This is a schematic diagram of the control circuit for the external communication signal amplifier in this embodiment.

[0021] Labeling: External communication signal amplifier 100, housing 110, wireless signal relay module 120, first end 111, second end 112, receiving unit 130, transmitting unit 140, RF gain processing unit 150, signal conditioning unit 151, gain control unit 152, isolation device 153, gain processor 154, receiving antenna 131, transmitting antenna 141, independent power supply module 160, energy storage unit 161, power supply control unit 162. Detailed Implementation

[0022] To make the objectives, features, and advantages of this invention more apparent and understandable, the technical solutions of the embodiments of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described below are only some embodiments of this invention, and not all embodiments. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0023] In the description of this invention, it should be understood that the terms "upper," "lower," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. It should be noted that when a component is considered to be "connected" to another component, it can be directly connected to the other component or there may be a component positioned centrally in the connection.

[0024] The technical solution of the present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0025] Example 1: Combination Figure 1 and Figure 2 As shown, an external communication signal amplifier 100 includes a housing 110 and a wireless signal relay module 120 integrated in the housing 110; wherein, the housing 110 has a first end 111 and a second end 112 disposed opposite to each other, and the first end 111 is configured to be close to the antenna region of the communication terminal. It should be noted that the external communication signal amplifier 100 is an auxiliary device independent of the communication terminal, and it can be used in conjunction with the communication terminal using an attached, snap-on, encased, or protective shell structure. The housing 110 is used to support, install, and protect the internal wireless signal relay module 120, while providing a relatively stable assembly space for various functional components. Preferably, the housing 110 can be made of lightweight, high-strength non-metallic materials, such as PC, ABS, PC / ABS alloy, nylon, or glass fiber reinforced composite materials, to avoid significant shielding effects on radio frequency signal transmission; in some embodiments, metal support members can also be provided in local non-antenna areas to improve the overall structural strength.

[0026] Combination Figure 2 As shown, the wireless signal relay module 120 includes a receiving unit 130 and a transmitting unit 140 electrically connected, and an RF gain processing unit 150 electrically connected to the receiving unit 130 and the transmitting unit 140, respectively. The housing 110 has a first end 111 and a second end 112 disposed opposite to each other along its length direction or main extension direction, wherein the first end 111 is preferably disposed close to the antenna area of ​​the communication terminal in the assembled or used state.

[0027] The antenna region mentioned here can be the top, bottom, or side region where the built-in cellular antenna of the communication terminal is located, or other radio frequency sensitive areas determined according to the specific terminal model. Preferably, the housing 110 can be designed to adapt to the structure of a specific model of communication terminal so that the first end 111 maintains a relatively stable positional correspondence with the antenna region of the target terminal.

[0028] The wireless signal relay module 120 is integrated inside the housing 110 and is used to receive, amplify, and retransmit external radio frequency signals, thereby enabling this device to compensate and enhance the wireless communication capabilities of the communication terminal in the form of an external device. By integrating the wireless signal relay module 120 into the housing 110, the overall structure can be made more compact, facilitating miniaturization and portability design, and making it more suitable for use in mobile terminal products such as mobile phones.

[0029] Combination Figure 1 As shown, the receiving unit 130 is integrated into the second end 112 of the housing 110 and is used to receive the downlink radio frequency signal to be forwarded from the remote network node and / or the uplink radio frequency signal to be forwarded from the communication terminal. It should be noted that the remote network node here can be a cellular communication base station, a micro base station, an indoor distributed signal node, or other wireless communication infrastructure. By arranging the receiving unit 130 at the second end 112, it is easier for it to receive wireless signals from the external environment. Furthermore, it provides sufficient physical separation from the transmitting unit 140 located at the first end 111, thereby reducing crosstalk from the transmitter feedback to the receiver and suppressing the risk of self-oscillation or oscillation. Especially in this scheme, since the device itself does not rely on complex protocol processing but mainly uses radio frequency repeater amplification, the physical separation between the receiver and transmitter plays a crucial role in improving the actual enhancement effect.

[0030] The radio frequency gain processing unit 150 is used to perform power boosting processing on the uplink radio frequency signal and / or the downlink radio frequency signal to be forwarded. For the downlink, it can amplify the received weak downlink signal and then radiate it to the communication terminal through the transmitting unit 140, thereby enhancing the terminal's reception quality; for the uplink, it can amplify the uplink signal sent by the communication terminal and then send it to the remote network node, thereby improving the terminal's uplink transmission capability in weak coverage environments.

[0031] Preferably, the RF gain processing unit 150 can be implemented using an analog RF amplification link, eliminating the need for a dedicated baseband processor, MCU, or complex logic control chip. Signal enhancement is achieved solely through RF devices, simplifying the overall design. Furthermore, the RF gain processing unit 150 can select low-noise amplifier chips and power amplifier chips with corresponding operating ranges based on the actual application frequency band, supplemented by bandpass filters, notch filters, or automatic gain limiting circuits to balance gain performance and link stability. This power enhancement processing method achieves signal enhancement with fewer components and lower control complexity, making it suitable for implementation as an external portable accessory.

[0032] The transmitting unit 140 is integrated into the first end 111 of the housing 110 and is used to radiate the downlink radio frequency signal amplified by the radio frequency gain processing unit 150 to the communication terminal, and / or radiate the uplink radio frequency signal amplified by the radio frequency gain processing unit 150 to the remote network node.

[0033] The transmitting unit 140 may include at least one transmitting antenna 141, preferably a miniature antenna structure corresponding to the operating frequency band, such as an FPC transmitting antenna 141, a PCB printed transmitting antenna 141, a chip transmitting antenna 141, or a directional enhancement miniature antenna. In some embodiments, the transmitting unit 140 and the receiving unit 130 may adopt different polarization directions or different antenna forms to further reduce coupling interference. By integrating the transmitting unit 140 at the first end 111 near the antenna area of ​​the communication terminal, the amplified downlink signal can be more concentrated on the communication terminal, which helps to improve the short-range coupling effect. At the same time, combined with the layout of the receiving unit 130 located at the second end 112, a spatial path of "receiving at the far end - amplifying in the middle - transmitting at the near end" can be formed, thereby realizing a simple and effective external communication signal enhancement scheme.

[0034] The working principle of this invention is as follows: In use, the first end 111 of the housing 110 is first positioned close to the antenna area of ​​the communication terminal, so that the receiving unit 130 integrated in the second end 112 preferentially receives the downlink RF signal to be forwarded from the remote network node and / or the uplink RF signal to be forwarded from the communication terminal; then, the received RF signal is input to the RF gain processing unit 150, which performs power boosting processing on the corresponding uplink RF signal and / or downlink RF signal; the RF signal after power boosting is then transmitted to the transmitting unit 140 integrated in the first end 111, and the transmitting unit 140 radiates the amplified downlink RF signal to the communication terminal and / or the amplified uplink RF signal to the remote network node. The signal is transmitted through a relay transmission path that enhances the wireless signal between the communication terminal and the remote network node, thereby improving the signal transmission and reception capabilities of the communication terminal in weak signal environments. Compared with existing technologies, this solution, through the structural layout of the receiving unit 130 and the transmitting unit 140, can reduce mutual interference between the receiving link and the transmitting link by using spatial separation, thereby improving the stability and effectiveness of RF signal relay amplification. On the other hand, it can make the amplified signal more targeted to the antenna area of ​​the communication terminal, thereby improving the communication quality in weak signal scenarios. At the same time, this solution mainly achieves signal power enhancement through the RF gain processing unit 150, without the need to configure a complex protocol processing core, realizing a simple structure and low cost external communication signal amplification.

[0035] Combination Figure 2 As shown in this embodiment, the radio frequency gain processing unit 150 includes a signal conditioning unit 151 and a gain control unit 152. The signal conditioning unit 151 is used to perform amplitude enhancement processing on the uplink radio frequency signal to be forwarded and / or the downlink radio frequency signal to be forwarded. The gain control unit 152 is used to limit the output power of the radio frequency gain processing unit 150 within a preset range, thereby avoiding the situation where the output power is too high and causes link instability, increased interference, or failure to meet relevant radio frequency usage requirements.

[0036] Optionally, the signal conditioning unit 151 may be composed of a combination of devices such as a low-noise amplifier, an RF amplifier chip, and a matching network, and the gain control unit 152 may be implemented using a limiting circuit, a power detection circuit, an automatic gain control circuit, or a preset threshold limiting circuit.

[0037] In this embodiment, the signal conditioning unit 151 further includes an uplink conditioner and a downlink conditioner; the uplink conditioner is used to amplify the uplink radio frequency signal to be forwarded from the communication terminal; the downlink conditioner is used to amplify the downlink radio frequency signal to be forwarded from the remote network node.

[0038] Preferably, the uplink and downlink conditioners can employ independent amplification channels, or they can be constructed using shared RF components to create a bidirectional processing structure. The specific configuration can be adjusted based on product size, cost, and target frequency band. By conditioning the uplink and downlink separately, the targeting of signal enhancement in different transmission directions can be improved. Furthermore, it facilitates parameter optimization based on the individual signal characteristics of the uplink and downlink, thereby enhancing the overall bidirectional communication enhancement effect of this solution in weak signal environments.

[0039] In this embodiment, the uplink conditioner includes an isolation device 153 and a gain processor 154, and the structure of the downlink conditioner is similar. The isolation device 153 is used to isolate the receiving path from the transmitting path to suppress feedback coupling and self-oscillation. The gain processor 154 is used to perform amplitude enhancement processing on the radio frequency signal of the corresponding link.

[0040] Optionally, the isolation device 153 can be implemented using one or more combinations of RF isolators, directional couplers, shielding structures, duplexers, filter isolation networks, or physical isolation layouts, and the gain processor 154 can be implemented using a dedicated uplink low-noise amplifier, a power amplifier, or an integrated RF gain chip. By setting the isolation device 153 and the gain processor 154 in the uplink in cooperation, on the one hand, the uplink signal can be guaranteed to have good stability and anti-crosstalk capability during the enhancement process, and on the other hand, the reliability of the external communication signal amplifier 100 in continuous operation can be improved, making this solution more suitable for application scenarios of weak signal enhancement in communication terminals.

[0041] In this embodiment, the receiving unit 130 includes a receiving antenna 131, and the transmitting unit 140 includes a transmitting antenna 141; the receiving antenna 131 is disposed at the second end 112 of the housing 110, and the transmitting antenna 141 is disposed at the first end 111 of the housing 110; the receiving antenna 131 and the transmitting antenna 141 are respectively impedance matched based on the operating frequency band of the communication terminal.

[0042] By distributing the receiving antenna 131 and the transmitting antenna 141 at opposite ends of the housing 110, the distance between the transmitting and receiving paths can be increased structurally, reducing mutual coupling interference. This also enhances the directional effect of the signal towards the communication terminal. Preferably, the receiving antenna 131 and the transmitting antenna 141 can be FPC antennas, PCB printed antennas, LDS antennas, patch antennas, or small dipole antennas, respectively. Impedance matching is performed according to the operating frequency band adapted to the communication terminal, for example, by setting matching capacitors, matching inductors, microstrip matching lines, or π / LC matching networks, so that each antenna has a good VSWR and transmission efficiency in the corresponding frequency band. Through the above settings, the antenna's receiving sensitivity and transmission efficiency for the target frequency band signal can be improved, thereby enhancing the improvement effect of this solution on communication links in weak signal environments.

[0043] In this embodiment, the external communication signal amplifier 100 further includes an independent power supply module 160, which includes an energy storage unit 161 and a power supply control unit 162 electrically connected to the wireless signal relay module 120. The power supply control unit 162 is used to control the opening or closing of the wireless signal relay module 120.

[0044] It should be noted that the independent power supply module 160 includes an energy storage unit 161 and a power supply control unit 162. The energy storage unit 161 can preferably be a rechargeable lithium-ion battery, lithium polymer battery, button cell battery pack, or thin flexible battery to meet the miniaturization integration requirements within the housing 110. The power supply control unit 162 is electrically connected to the wireless signal relay module 120 and is used to control the power-on or power-off standby state of the wireless signal relay module 120. Furthermore, the power supply control unit 162 may also include basic voltage regulation circuitry, overcurrent protection circuitry, undervoltage protection circuitry, or charging management circuitry to ensure the stability and safety of the power supply process.

[0045] In this embodiment, it is further explained that the power supply control unit 162 includes an operation switch, which is used for the user to actively switch the working state of the wireless signal relay module 120, for example, to turn on the wireless signal relay module 120 in a weak signal environment and to turn off the wireless signal relay module 120 in a normal signal environment or in a scenario where no enhancement is required.

[0046] Optionally, the operating switch can be a common form such as a mechanical push-button switch, toggle switch, tactile switch, or membrane push-button switch. It can also be designed with a planar or concealed layout depending on the structure of the housing 110, balancing overall appearance and ease of operation. By setting an operating switch that is actively controlled by the user, the device can be used more flexibly, avoiding unnecessary energy consumption caused by the wireless signal repeater module 120 being constantly on. It also allows users to choose whether to enable the signal enhancement function according to different environments, thereby improving the convenience and operability of this solution in practical applications.

[0047] As a preferred embodiment, the operating switch is an inductive switch; the inductive switch is disposed in a preset trigger area on the surface of the housing 110, and outputs a start / stop control signal when the user touches, blocks light from, or approaches the preset trigger area.

[0048] The inductive switch can be implemented using one or more of the following methods: capacitive inductive switch, infrared inductive switch, photosensitive occlusion inductive switch, and proximity inductive switch. If a light-blocking trigger method is used, a corresponding sensing window or hidden sensing area can be provided on the surface of the housing 110, allowing the user to control start and stop by covering or lightly touching the surface with their finger. Compared to traditional mechanical buttons, the inductive switch reduces the number of openings on the surface of the housing 110, improving the overall aesthetic integrity and reducing the risk of structural wear caused by mechanical pressing. Furthermore, its operation is more intuitive and convenient, making it more suitable for use in smaller, portable, and integrated external communication signal amplifiers 100.

[0049] Furthermore, the external communication signal amplifier 100 also includes a feedback unit 170, which is electrically connected to the radio frequency gain processing unit 150. The feedback unit 170 is used to detect the output status of the transmission link and feed the detection result back to the radio frequency gain processing unit 150 so as to dynamically adjust the signal amplification, thereby suppressing excessive amplification, feedback coupling or self-oscillation, and improving the working stability and signal transmission reliability of the external communication signal amplifier 100.

[0050] Example 2: The present invention also provides a communication system, including a communication terminal and an external communication signal amplifier 100 as described in Embodiment 1; the external communication signal amplifier 100 is detachably disposed on the outside of the communication terminal, and the first end 111 of the housing 110 is disposed corresponding to the antenna area of ​​the communication terminal.

[0051] This allows the enhanced signal emitted by the external communication signal amplifier 100 to act more effectively on the antenna part of the communication terminal, thereby improving the signal reception and transmission performance of the communication terminal in weak signal environments. At the same time, the detachable design makes it easy for users to install and remove the device according to their actual needs, improving the overall flexibility of use.

[0052] As an optional solution in this embodiment, the communication terminal can be any one of a smartphone, tablet computer, or portable mobile hotspot device, to adapt to the signal enhancement needs of different types of portable wireless communication devices.

[0053] The external communication signal amplifier 100 can be constructed in any of the following forms: a protective shell, a back clip shell, or an adhesive shell. This allows for a suitable installation method to fit different terminal shapes, thus ensuring signal enhancement while also considering product portability, structural integration, and ease of daily use.

[0054] The above-described embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An external communication signal amplifier, characterized in that, Includes a housing and a wireless signal relay module integrated into the housing; The housing has a first end and a second end that are disposed opposite to each other, and the first end is configured to be close to the antenna region of the communication terminal. The wireless signal relay module includes a receiving unit and a transmitting unit electrically connected to each other, and a radio frequency gain processing unit electrically connected to the receiving unit and the transmitting unit respectively. The receiving unit is integrated at the second end of the housing and is used to receive downlink radio frequency signals to be forwarded from remote network nodes and / or uplink radio frequency signals to be forwarded from communication terminals. The radio frequency gain processing unit is used to perform power boosting processing on the uplink radio frequency signal to be forwarded and / or the downlink radio frequency signal to be forwarded. The transmitting unit is integrated at the first end of the housing and is used to radiate the downlink radio frequency signal amplified by the radio frequency gain processing unit to the communication terminal, and / or to radiate the uplink radio frequency signal amplified by the radio frequency gain processing unit to the remote network node.

2. The external communication signal amplifier according to claim 1, characterized in that, The radio frequency gain processing unit includes a signal conditioning unit and a gain control unit; The signal conditioning unit is used to perform amplitude enhancement processing on the uplink radio frequency signal to be forwarded and / or the downlink radio frequency signal to be forwarded. The gain control unit is used to limit the output power of the radio frequency gain processing unit within a preset range.

3. The external communication signal amplifier according to claim 2, characterized in that, The signal conditioning unit includes an uplink conditioner and a downlink conditioner; The uplink conditioner is used to amplify the uplink radio frequency signal to be forwarded from the communication terminal. The downlink conditioner is used to amplify the downlink radio frequency signal to be forwarded from the remote network node.

4. The external communication signal amplifier according to claim 3, characterized in that, The uplink conditioner includes an isolation device and a gain processor; The isolation device is used to isolate the receiving path from the transmitting path in order to suppress feedback coupling and self-oscillation; The gain processor is used to perform amplitude enhancement processing on the radio frequency signals of the corresponding link.

5. The external communication signal amplifier according to claim 1, characterized in that, The receiving unit includes a receiving antenna, and the transmitting unit includes a transmitting antenna; The receiving antenna is disposed at the second end of the housing, and the transmitting antenna is disposed at the first end of the housing; The receiving antenna and the transmitting antenna are impedance matched based on the operating frequency band of the communication terminal.

6. The external communication signal amplifier according to claim 1, characterized in that, It also includes an independent power supply module, which includes an energy storage unit and a power supply control unit electrically connected to the wireless signal relay module; The power supply control unit is used to control the opening or closing of the wireless signal relay module.

7. The external communication signal amplifier according to claim 6, characterized in that, The power supply control unit includes an operation switch, which is used by the user to actively switch the working state of the wireless signal relay module.

8. The external communication signal amplifier according to claim 7, characterized in that, The operating switch is an inductive switch; The inductive switch is located in a preset trigger area on the surface of the housing, and outputs a start / stop control signal when the user touches, blocks light from, or approaches the preset trigger area.

9. A communication system, characterized in that, Includes a communication terminal, and an external communication signal amplifier as described in any one of claims 2 to 8; The external communication signal amplifier is detachably disposed on the outside of the communication terminal, and the first end of the housing is disposed corresponding to the antenna area of ​​the communication terminal.

10. The communication system according to claim 9, characterized in that, The communication terminal is any one of a smartphone, tablet computer, or portable mobile hotspot device; The external communication signal amplifier is constructed in any of the following forms: protective shell, back clip shell, or attached shell.

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