Signal amplifier and radio frequency wireless system

Abstract

The utility model discloses a signal amplifier and a radio frequency wireless system, the signal amplifier comprises a near-end display assembly and a far-end active amplification assembly, the near-end display assembly is in communication connection with the far-end active amplification assembly; the far-end active amplification assembly comprises a far-end communication module, a far-end monitoring module, a far-end controller, a far-end amplification module, a far-end power supply module and a far-end high-gain antenna; the far-end controller is used for generating a sending signal and receiving a radio frequency signal in a 2.4 G / 5.8 G frequency band; the far-end amplification module is electrically connected with the far-end controller, the far-end high-gain antenna is electrically connected with the far-end amplification module, the far-end monitoring module is electrically connected with the far-end controller and the far-end communication module, and the far-end power supply module is electrically connected with the far-end communication module, the far-end monitoring module, the far-end amplification module and the far-end controller. The antenna is stable in signal, has the advantages of high gain, high efficiency and high reliability, and can meet the remote control requirement.

Description

Technical Field

[0001] This utility model relates to the field of radio frequency technology, and in particular to a signal amplifier and a radio frequency wireless system. Background Technology

[0002] Currently, ISM bands such as 2.4GHz and 5.8GHz can be used in industrial applications, scientific research, and medical fields. Wireless coverage over a certain area enables communication between radio frequency (RF) devices, such as Wi-Fi, Bluetooth, and drone communication. However, in conventional applications, the communication distance of RF devices is severely limited by factors such as size and power consumption. For example, the actual communication distance of conventional agricultural drones and power line inspection drones is between 3-5km. Even with increasing demands for longer battery life, the wireless coverage of existing RF devices remains limited, failing to meet the needs of applications requiring greater distance.

[0003] In view of this, it is necessary to propose further improvements to the current radio frequency equipment. Utility Model Content

[0004] To solve at least one of the above-mentioned technical problems, the main objective of this utility model is to provide a signal amplifier and a radio frequency wireless system.

[0005] To achieve the above objectives, the present invention provides a signal amplifier, comprising: a near-end display component and a far-end active amplifier component, wherein the near-end display component and the far-end active amplifier component are separated and are communicatively connected.

[0006] The remote active amplifier assembly includes a remote communication module, a remote monitoring module, a remote controller, a remote amplification module, a remote power supply module, and a remote high-gain antenna.

[0007] The remote controller is used to generate a transmission signal according to preset parameters and send it to the remote amplification module, and to receive the 2.4G / 5.8G frequency band radio frequency signal amplified by the remote amplification module.

[0008] The remote amplification module is electrically connected to the remote controller and is used to amplify the transmitted signal to obtain a target signal with nominal power intensity, and transmit it to the remote high-gain antenna, as well as amplify the 2.4G / 5.8G frequency band radio frequency signal transmitted by the UAV and received by the remote high-gain antenna.

[0009] The high-gain antenna at the far end is electrically connected to the far-end amplification module and is used to receive the target signal transmitted by the far-end amplification module and transmit the target signal outward to cover the preset area where the UAV flies, as well as to receive the 2.4G / 5.8G frequency band radio frequency signals transmitted outward by the UAV when flying in the preset area.

[0010] The remote monitoring module is electrically connected to the remote controller and the remote communication module respectively, and is used to monitor the working status of the remote amplification module, the remote power supply module, the remote controller and the remote high-gain antenna in real time, and transmit the data to the near-end display component through the remote communication module.

[0011] The remote power module is electrically connected to the remote communication module, the remote monitoring module, the remote amplification module, and the remote controller, respectively.

[0012] The remote amplification module includes a first transmitting component and a first receiving component;

[0013] The first transmitting component includes a first low-power radio frequency switch, a first preamplifier, a first driver, a first power amplifier, a first circulator, and a first high-power radio frequency switch connected in sequence. The first low-power radio frequency switch is used to electrically connect to the remote controller, and the first circulator is electrically connected to the remote high-gain antenna.

[0014] The first receiving component includes a first limiter, a high-pass filter, a first preamplifier low-noise amplifier, a first preamplifier band-pass filter, a first low-noise gain amplifier, and a first band-pass filter connected in sequence. The first limiter is electrically connected to a first high-power RF switch, and the first band-pass filter is electrically connected to a first low-power RF switch.

[0015] The remote amplification module further includes a second transmitting component and a second receiving component;

[0016] The second transmitting component includes a second low-power RF switch, a second preamplifier, a second driver, a second power amplifier, a second circulator, and a second high-power RF switch connected in sequence. The second low-power RF switch is used to electrically connect to the remote controller, and the second circulator is used to electrically connect to the remote high-gain antenna.

[0017] The second receiving component includes a second limiter, a low-pass filter, a second low-preamplifier, a second preamplifier bandpass filter, a second low-noise gain amplifier, and a second bandpass filter connected in sequence. The second limiter is electrically connected to a second high-power RF switch, and the second bandpass filter is electrically connected to a second low-power RF switch.

[0018] The remote amplification module further includes a third bandpass filter, a fourth bandpass filter, and a duplexer. The third bandpass filter is electrically connected to a first low-power RF switch, the fourth bandpass filter is electrically connected to a second low-power RF switch, and the duplexer is electrically connected to both the third and fourth bandpass filters. The duplexer is used for wireless connection with an AP access device, wherein the AP access device is a remote controller or an external controller.

[0019] The first transmitting component further includes a first RF load, and a first coupler, a first RF power detector and a first gain amplifier connected in sequence. The first coupler is used to be electrically connected to the remote controller, the first gain amplifier is used to be electrically connected to a first low-power RF switch, and the first RF load is electrically connected to a first high-power RF switch.

[0020] The second transmitting component also includes a second RF load, and a second coupler, a second RF power detector, and a second gain amplifier connected in sequence. The second coupler is used to be electrically connected to the remote controller, the second gain amplifier is used to be electrically connected to a second low-power RF switch, and the second RF load is electrically connected to a second high-power RF switch.

[0021] The first high-power RF switch is used to turn on the first RF load when transmitting a signal and to turn on the first limiter when receiving a RF signal; the second high-power RF switch is used to turn on the second RF load when transmitting a signal and to turn on the second limiter when receiving a RF signal.

[0022] The first transmitting component further includes a first surge protector, one end of which is electrically connected to the first circulator, and the other end of which is grounded.

[0023] The second transmitting assembly also includes a second surge protector, one end of which is electrically connected to the second circulator, and the other end of which is grounded.

[0024] The first high-power radio frequency switch includes a switching chip, a first metal MOSFET, a second metal MOSFET, a first inductor, a second inductor, a third inductor, and a fourth inductor. The receiving end of the first switching chip is connected to one end of the first inductor and one end of the third inductor, respectively. The other end of the first inductor is grounded. The other end of the third inductor is connected to the drain of the second metal MOSFET. The gate of the second metal MOSFET is connected to a preset voltage, and its source is grounded. The transmitting end of the first switching chip is connected to one end of the second inductor. The other end of the second inductor is connected to the drain of the first metal MOSFET. The gate of the first metal MOSFET is connected to a preset voltage, and its source is grounded. The antenna end of the first switching chip is connected to a bias voltage through the fourth inductor.

[0025] The remote amplification module further includes a second transmitting component and a second receiving component. The second transmitting component includes a transmit gating switch, a second preamplifier, a second driver, and a second power amplifier connected in sequence. The second power amplifier is electrically connected to a first limiter. The transmit gating switch is electrically connected to the first low-power radio frequency switch and is used to select either a first transmitting path or a second transmitting path according to the transmitted signal. The first transmitting path consists of a first preamplifier, a first driver, and a first power amplifier; the second transmitting path consists of a second preamplifier, a second driver, and a second power amplifier.

[0026] The second receiving component further includes a receiving gating switch, a second limiter, a low-pass filter, a second low-noise preamplifier, a second preamplifier band-pass filter, a second low-noise gain amplifier, and a second band-pass filter connected in sequence. The receiving gating switch is electrically connected to the second high-power RF switch. The receiving gating switch is used to select a first receiving path or a second receiving path according to the received RF signal. The first receiving path consists of a high-pass filter, a first preamplifier low-noise amplifier, a first preamplifier band-pass filter, a first low-noise gain amplifier, and a first band-pass filter. The second receiving path consists of a low-pass filter, a second low-noise preamplifier, a second preamplifier band-pass filter, a second low-noise gain amplifier, and a second band-pass filter.

[0027] The first transmitting component further includes a transmit gating switch, a transmit gain compensator, and a second power amplifier. The first terminal of the transmit gating switch is electrically connected to the first driver, the second terminal of the transmit gating switch is electrically connected to the first power amplifier, the third terminal of the transmit gating switch is electrically connected to the transmit gain compensator, the transmit gain compensator is electrically connected to the second power amplifier, and the second power amplifier is connected to the first circulator.

[0028] It also includes a second receiving component, which comprises a receive gating switch, a second limiter, a low-pass filter, a second low-noise preamplifier, a second preamplifier band-pass filter, a second low-noise gain amplifier, and a second band-pass filter connected in sequence. The receive gating switch is electrically connected to the second high-power RF switch. The receive gating switch is used to select a first receiving path or a second receiving path according to the received RF signal. The first receiving path consists of a high-pass filter, a first preamplifier low-noise amplifier, a first preamplifier band-pass filter, a first low-noise gain amplifier, and a first band-pass filter. The second receiving path consists of a low-pass filter, a second low-noise preamplifier, a second preamplifier band-pass filter, a second low-noise gain amplifier, and a second band-pass filter.

[0029] To achieve the above objectives, another technical solution adopted by this utility model is: providing a radio frequency wireless system, including a drone, a signal amplifier, and an AP access device, wherein the signal amplifier is electrically connected to the drone and the AP access device respectively, and the signal amplifier is the aforementioned signal amplifier.

[0030] This invention employs a near-end display component and a far-end active amplifier component communicatively connected to the near-end display component. The near-end display component can display the operating status of each far-end module, facilitating real-time control. The far-end active amplifier component amplifies the power of the radio frequency signal. Specifically, the far-end active amplifier component includes a far-end communication module, a far-end monitoring module, a far-end amplification module, a far-end power supply module, and a far-end high-gain antenna. The far-end amplification module amplifies the received radio frequency signal to the nominal power intensity before transmitting it through the far-end high-gain antenna, covering a large area. The far-end monitoring module monitors the operation of the far-end amplification module, the far-end power supply module, and the far-end high-gain antenna and performs real-time control. The far-end communication module transmits the operating status of each module to the near-end display component. Through the implementation of this technical solution, the invention achieves advantages such as signal stability, high gain, high efficiency, and high reliability, enabling long-distance control. Attached Figure Description

[0031] To more clearly illustrate the technical solutions in the embodiments of this utility model 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 this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0032] Figure 1 This is a schematic diagram of a signal amplifier module according to an embodiment of the present invention;

[0033] Figure 2 This is a schematic diagram of a remote amplification module according to an embodiment of the present invention;

[0034] Figure 3 This is a partial circuit diagram of the remote amplification module according to an embodiment of the present invention;

[0035] Figure 4 This is a circuit diagram of a first high-power radio frequency switch according to an embodiment of the present invention;

[0036] Figure 5 This is a partial schematic diagram of the remote amplification module according to another embodiment of the present invention;

[0037] Figure 6This is a partial module schematic diagram of the remote amplification module in another embodiment of the present invention;

[0038] Figure 7 This is a schematic diagram of a radio frequency system module according to an embodiment of the present invention.

[0039] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0040] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0041] It should be noted that the descriptions involving "first," "second," etc., in this utility model are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. If the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0042] Unlike related technologies where the communication range of radio frequency (RF) devices is severely limited by factors such as device size and power consumption—for example, the actual communication range of conventional agricultural drones and power line inspection drones is between 3-5 km—existing RF devices cannot meet the needs of applications requiring longer ranges due to increasing demands for endurance. This invention provides a signal amplifier designed to improve power, receiver sensitivity, antenna performance, and other technical specifications, thereby increasing the communication range by 2-3 times. This amplifier is suitable for special scenarios requiring long-distance communication. Please refer to the following embodiment for the specific structure of this signal amplifier.

[0043] Please refer to Figures 1 to 2 , Figure 1 This is a schematic diagram of a signal amplifier module according to an embodiment of the present invention; Figure 2This is a schematic diagram of a remote amplification module according to an embodiment of the present invention. In this embodiment of the present invention, the signal amplifier includes: a near-end display component 100 and a remote active amplification component 200, wherein the near-end display component 100 and the remote active amplification component 200 are spaced apart and are communicatively connected.

[0044] The remote active amplifier assembly 200 includes a remote active amplifier assembly 206, a remote monitoring module 205, a remote controller 201, a remote amplification module 202, a remote power supply module 204, and a remote high-gain antenna 203. The remote controller 201 is used to generate a transmission signal according to preset parameters and send it to the remote amplification module 202, and to receive 2.4G / 5.8G frequency band radio frequency signals amplified by the remote amplification module 202. The remote amplification module 202 is electrically connected to the remote controller 201 and is used to amplify the transmission signal to obtain a target signal with nominal power intensity, and send it to the remote high-gain antenna 203, and to amplify the 2.4G / 5.8G frequency band radio frequency signals transmitted by the UAV received by the remote high-gain antenna 203. The remote high-gain antenna 203 is connected to... The remote amplification module 202 is electrically connected and is used to receive the target signal transmitted by the remote amplification module 202 and transmit the target signal outward to cover the preset area of ​​the UAV flight, as well as to receive the 2.4G / 5.8G frequency band radio frequency signals transmitted outward by the UAV when flying in the preset area; the remote monitoring module 205 is electrically connected to the remote controller 201 and the remote active amplification component 206 respectively, and is used to monitor the working status of the remote amplification module 202, the remote power module 204, the remote controller 201 and the remote high-gain antenna 203 in real time, and transmit the data to the near-end display component 100 through the remote active amplification component 206; the remote power module 204 is electrically connected to the remote active amplification component 206, the remote monitoring module 205, the remote amplification module 202 and the remote controller 201 respectively.

[0045] In this embodiment, the signal amplifier mainly includes a near-end display component 100 and a far-end active amplifier component 200. The near-end display component 100 and the far-end active amplifier component 200 are connected via a power line. This power line serves as both a power line and a communication line; the near-end display component 100 is powered by the far-end active amplifier component 200 via the power line, eliminating the need for an external power supply. Specifically, the near-end display component 100 and the far-end active amplifier component 200 are suitable for long-distance use, with a maximum extension distance of 50m using the power line. The near-end display component 100 allows for simple and intuitive viewing of the operating status of each module in the far-end active amplifier component 200, facilitating real-time control and providing strong anti-interference capabilities. Furthermore, the near-end display component 100 can also be configured with settings for each module in the far-end active amplifier component 200. When any module in the far-end active amplifier component 200 experiences data anomalies, an alarm message can be issued to alert the user. This alarm signal can be a light, sound, vibration, or other similar method.

[0046] The remote active amplifier assembly 200 mainly includes a remote active amplifier assembly 206, a remote monitoring module 205, a remote amplification module 202, a remote power supply module 204, a remote controller 201, and a remote high-gain antenna 203. The remote amplification module 202 receives the radio frequency signal transmitted by the remote controller 201. This radio frequency signal has relatively low power, and the module amplifies it. Once the radio frequency signal reaches its nominal power intensity, it is transmitted via the remote high-gain antenna 203, covering the UAV's flight area. The remote high-gain antenna 203 uses a copper vibrator design, which improves the signal-to-noise ratio of the useful signal, making it more difficult for external environmental clutter to interfere with the useful communication signal. It features high gain, high efficiency, and high reliability, and supports dual-frequency bands of 2.4 GHz and 5.8 GHz. The remote monitoring module 205 monitors the operating status of the remote amplification module 202, the remote power supply module 204, the remote controller 201, and the remote high-gain antenna 203 in real time, and transmits the data to the near-end display component 100 via the remote active amplifier component 206. The remote power supply module 204 can convert the input voltage to provide a reasonable voltage for the remote active amplifier component 206, the remote monitoring module 205, the remote amplification module 202, and the remote high-gain antenna 203. Specifically, it can convert the high voltage supplied externally into the low voltage required by each module in the signal amplifier to ensure the stability of the equipment operation.

[0047] In one specific embodiment, the remote amplification module 202 includes a first transmitting component and a first receiving component; the first transmitting component includes a first low-power RF switch 211, a first preamplifier 212, a first driver 213, a first power amplifier 214, a first circulator 215, and a first high-power RF switch 216 connected in sequence, the first low-power RF switch 211 being electrically connected to the remote controller, and the first circulator 215 being electrically connected to the remote high-gain antenna 203; the first receiving component includes a first limiter 219, a high-pass filter 220, a first preamplifier low-noise amplifier 221, a first preamplifier bandpass filter 222, a first low-noise gain amplifier 223, and a first bandpass filter 224 connected in sequence, the first limiter 219 being electrically connected to the first high-power RF switch 216, and the first bandpass filter 224 being electrically connected to the first low-power RF switch 211. The first low-power RF switch 211, the first preamplifier 212, the first driver 213, the first power amplifier 214, the first circulator 215, and the first high-power RF switch 216 constitute the first transmission path. When transmitting a signal, the first low-power RF switch 211 and the first high-power RF switch 216 select the first transmission path. At this time, the first preamplifier 212 and the first driver 213 amplify the transmitted signal step by step. The first power amplifier 214 amplifies the transmitted signal to the nominal power level and then sends it to the remote high-gain antenna 203 through the first circulator 215. The remote high-gain antenna 203 then transmits the signal. At this time, the first high-power RF switch 216 turns off the first receiving path. The first high-power RF switch 216, the first limiter 219, the high-pass filter 220, the first pre-amplifier low-noise amplifier 221, the first pre-amplifier band-pass filter 222, the first low-noise gain amplifier 223, the first band-pass filter 224, and the first low-power RF switch 211 constitute the first receiving path. When receiving a signal, the first low-power RF switch 211 shuts off the first transmitting path. The received RF signal is amplitude-adjusted by the first limiter 219, and after being filtered and amplified step-by-step by the high-pass filter 220, the first pre-amplifier low-noise amplifier 221, the first pre-amplifier band-pass filter 222, the first low-noise gain amplifier 223, and the first band-pass filter 224, it is sent to the remote controller 201 to complete the communication interaction. The first transmitting component and the first receiving component are used to transmit or receive RF signals in the 5.8G or 2.4G frequency band. The aforementioned first pre-amplifier low-noise amplifier 221 and first low-noise gain amplifier 223 are used to amplify the signal step-by-step to avoid signal distortion.

[0048] In one specific embodiment, the remote amplification module 202 further includes a second transmitting component and a second receiving component;

[0049] The second transmitting component includes a second low-power RF switch 231, a second preamplifier 232, a second driver 233, a second power amplifier 234, a second circulator 235, and a second high-power RF switch 236 connected in sequence. The second low-power RF switch 231 is used to electrically connect to the remote controller 201, and the second circulator 235 is electrically connected to the remote high-gain antenna 203.

[0050] The second receiving component includes a second limiter 239, a low-pass filter 240, a second low-pre-noise amplifier 241, a second pre-bandpass filter 242, a second low-noise gain amplifier 243, and a second bandpass filter 244 connected in sequence. The second limiter 239 is electrically connected to a second high-power RF switch 236, and the second bandpass filter 244 is electrically connected to a second low-power RF switch 231. The function of the second transmitting component is similar to that of the first transmitting component, and the functions of the first receiving component are similar to those of the second receiving component. For specific principles, please refer to the above embodiments; they will not be repeated here. It should be understood that the first transmitting component and the first receiving component are used to transmit or receive 5.8 GHz RF signals, and the second transmitting component and the second receiving component are used to transmit or receive 2.4 GHz RF signals.

[0051] In one specific embodiment, the remote amplification module 202 further includes a third bandpass filter 228, a fourth bandpass filter 248, and a duplexer 229. The third bandpass filter 228 is electrically connected to a first low-power RF switch 211, and the fourth bandpass filter 248 is electrically connected to a second low-power RF switch 231. The duplexer 229 is electrically connected to both the third bandpass filter 228 and the fourth bandpass filter 248. The duplexer 229 is used for wireless connection with an AP access device, which is a remote controller or an external controller. The remote controller or external controller can transmit 5.8G or 2.4G RF signals. These 2.4G or 5.8G RF signals are received by the duplexer 229 and then pass through the duplexer 229, the third bandpass filter 228, or the fourth bandpass filter 248 to the remote controller 201, thereby controlling signal transmission. The third bandpass filter 228 and the fourth bandpass filter 248 can filter out the 2.4G and 5.8G frequency bands, respectively. This external controller can be built into a smart device, including smartphones, tablets, etc.

[0052] In one specific embodiment, the first transmitting component further includes a first RF load 218, and a first coupler 227, a first RF power detector 226, and a first gain amplifier 225 connected in sequence. The first coupler 227 is electrically connected to the remote controller 201, the first gain amplifier 225 is electrically connected to a first low-power RF switch 211, and the first RF load 218 is electrically connected to a first high-power RF switch 216.

[0053] The second transmitting component further includes a second RF load 238, and a second coupler 247, a second RF power detector 246, and a second gain amplifier 245 connected in sequence. The second coupler 247 is electrically connected to the remote controller 201, the second gain amplifier 245 is electrically connected to the second low-power RF switch 231, and the second RF load 238 is electrically connected to the second high-power RF switch 236. The first high-power RF switch 216 is used to turn on the first RF load 218 and turn off the first limiter 219 when transmitting a signal, and to turn on the first limiter 219 and turn off the first RF load 218 when receiving a RF signal. The second high-power RF switch 236 is used to turn on the second RF load 238 and turn off the second limiter 239 when transmitting a signal, and to turn on the second limiter 239 and turn off the second RF load 238 when receiving a RF signal. The first RF load 218 and the second RF load 238 are in an active state when transmitting a signal, absorbing power; and are in an off state when receiving a signal. The first RF load 218 and the second RF load 238 are designed to protect the receiving path components from damage during high-power signal transmission.

[0054] In one specific embodiment, the first transmitting component further includes a first surge protector 217, one end of which is electrically connected to a first circulator 215, and the other end of which is grounded; the second transmitting component further includes a second surge protector 237, one end of which is electrically connected to a second circulator 235, and the other end of which is grounded. When in use, the remote active amplification component 200 of the signal amplifier is typically mounted at a high location, and the first surge protector 217 and the second surge protector 237 effectively prevent lightning damage to the equipment.

[0055] Please refer to Figure 3 and Figure 4 , Figure 3 This is a partial circuit diagram of the remote amplification module according to an embodiment of the present invention; Figure 4 This is a circuit diagram of a first high-power radio frequency switch according to an embodiment of the present invention. Figure 3In this circuit, the first power amplifier 10, the first circulator 20, the first high-power RF switch 40, and the first limiter 30 are interconnected. The circuit of the first high-power RF switch 216 is described in detail below. Please refer to... Figure 4 In one embodiment, the first high-power radio frequency switch 216 includes a switch chip U1, a first metal MOSFET Q1, a second metal MOSFET Q2, a first inductor L1, a second inductor L2, a third inductor L3, and a fourth inductor L4. The receiving end of the first switch chip U1 is connected to one end of the first inductor L1 and one end of the third inductor L3, respectively. The other end of the first inductor L1 is grounded. The other end of the third inductor L3 is connected to the drain of the second metal MOSFET Q2. The gate of the second metal MOSFET Q2 is connected to a preset voltage, and its source is grounded. The transmitting end of the first switch chip U1 is connected to one end of the second inductor L2. The other end of the second inductor L2 is connected to the drain of the first metal MOSFET Q1. The gate of the first metal MOSFET Q1 is connected to a preset voltage, and its source is grounded. The antenna end of the first switch chip U1 is connected to a bias voltage through the fourth inductor L4.

[0056] The switching chip U1 controls the on / off state of the first metal MOSFET Q1 and the second metal MOSFET Q2. When the first metal MOSFET Q1 is on and the second metal MOSFET Q2 is off, the emitter of the switching chip U1 is at a high level, and the entire circuit is in the transmit path. When the first metal MOSFET Q1 is off and the second metal MOSFET Q2 is on, the receiver of the switching chip U1 is at a high level, and the entire circuit is in the receive path. The first inductor L1 provides a bias voltage, while the second inductor L2, the third inductor L3, and the fourth inductor L4 mainly serve a decoupling effect.

[0057] In one specific embodiment, the signal amplifier further includes a heat sink housing and a mounting bracket installed on the outside of the heat sink housing. The remote communication module 206, remote monitoring module 205, remote amplification module 202, remote power module 204, remote controller 201, and remote high-gain antenna 203 are installed inside the heat sink housing. The signal amplifier includes two sets of transmitting and receiving components, forming four communication channels that operate independently. The heat sink housing is made of high-purity aluminum using CNC machining, providing ample heat dissipation margin, enabling timely heat dissipation, and stable and reliable operation. The first power amplifier 214 and the second power amplifier 234 of the signal amplifier in this solution use gallium nitride (GaN), which can effectively improve the overall efficiency of the power amplifier. This signal amplifier supports 2.4G+5.8G dual channels, with the two modules supporting 4T4R, and the four channels operating independently, which can improve working efficiency. This solution has a high degree of integration, including two T2R modes for 2.4G+5.8G, a total of four transmitting channels, and each channel has an output power greater than 10W, making the design challenging. Some solutions use independent single-frequency high-power modules. However, to achieve the same effect as this solution with two T2R modules (2.4G + 5.8G), the size would be large, making miniaturization difficult. Another example is the 1T1R solution, which has poor resistance to RF signal fading and interference. A 2T2R low-power solution can also be used; while small in size, its low output power reduces communication distance and interference immunity.

[0058] In one specific embodiment, the remote high-gain antenna 203 is a copper vibrator. Compared to ordinary vibrator antennas, using a copper vibrator as the remote high-gain antenna 203 offers advantages such as high gain, high efficiency, and high reliability. This solution's remote high-gain antenna 203 supports dual-frequency bands of 2.4GHz and 5.8GHz, with a power capacity greater than 50W, capable of covering the application area. In actual testing, a DJI Mavic 3 drone, without this product, had an effective maximum flight distance of less than 5km. With this product on the remote control, the actual flight distance exceeded 20km. The signal remained stable during flight, exhibiting strong anti-interference capabilities, and it can be widely applied in scenarios requiring long-distance applications, such as agriculture, power line inspection, and forest fire prevention.

[0059] Understandably, in addition to communicating with drones, this device can also carry radio frequency products such as mechanical dogs and unmanned boats.

[0060] Please refer to Figure 2 and Figure 5 , Figure 2 This is a schematic diagram of a remote amplification module according to an embodiment of the present invention. Figure 5This is a partial schematic diagram of a remote amplification module according to another embodiment of the present invention. In a specific embodiment, the remote amplification module 202 further includes a second transmitting component and a second receiving component. The second transmitting component includes a transmit gating switch 250, a second preamplifier 232, a second driver 233, and a second power amplifier 234 connected in sequence. The second power amplifier 234 is electrically connected to a first limiter 219. The transmit gating switch 250 is electrically connected to a first low-power radio frequency switch 211 and is used to select a first transmit path or a second transmit path according to the transmit signal. The first transmit path consists of a first preamplifier 212, a first driver 213, and a first power amplifier 214; the second transmit path consists of a second preamplifier 232, a second driver 233, and a second power amplifier 234.

[0061] The second receiving component further includes a receiving gating switch 260, a second limiter 239, a low-pass filter 240, a second low-noise preamplifier 241, a second preamplifier bandpass filter 242, a second low-noise gain amplifier 243, and a second bandpass filter 244 connected in sequence. The receiving gating switch 260 is electrically connected to the second high-power RF switch 236. The receiving gating switch 260 is used to select either a first receiving path or a second receiving path according to the received RF signal. The first receiving path consists of a high-pass filter 220, a first preamplifier low-noise amplifier 221, a first preamplifier bandpass filter 222, a first low-noise gain amplifier 223, and a first bandpass filter 224. The second receiving path consists of a low-pass filter 240, a second low-noise preamplifier 241, a second preamplifier bandpass filter 242, a second low-noise gain amplifier 243, and a second bandpass filter 244.

[0062] In this embodiment, the first terminal of the transmit gating switch 250 is connected to the first low-power RF switch 211, the second terminal of the transmit gating switch 250 is connected to the first preamplifier driver 212, and the third terminal of the transmit gating switch 250 is connected to the second preamplifier driver 232. The transmit gating switch 250 selects the first transmit path when receiving a 5.8G RF signal and selects the second transmit path when receiving a 2.4G RF signal. The first terminal of the receive gating switch 260 is connected to the first high-power RF switch 216, the second terminal of the receive gating switch 260 is connected to the high-pass filter 219, and the third terminal of the receive gating switch 260 is connected to the low-pass filter 239. The receive gating switch 260 selects the first receive path when receiving a 5.8G RF signal and selects the second receive path when receiving a 2.4G RF signal. By setting the transmit gating switch 250 and the receive gating switch 260, the two transmit and receive paths can share the first coupler 227, the first RF power detector 226, the first gain amplifier 225, the first low-power RF switch 211, the first high-power RF switch 216, the first circulator 215, the first RF load 218, and the first surge protector 217, which can greatly save electronic components and reduce production costs.

[0063] Please refer to Figure 2 and Figure 6 , Figure 2 This is a schematic diagram of a remote amplification module according to an embodiment of the present invention. Figure 6 This is a partial schematic diagram of a remote amplification module according to another embodiment of the present invention. In a specific embodiment, the first transmitting component further includes a transmitting gating switch 250, a transmitting gain compensator 236, and a second power amplifier 234. The first terminal of the transmitting gating switch 250 is electrically connected to the first driver 213, the second terminal of the transmitting gating switch 250 is electrically connected to the first power amplifier 214, the third terminal of the transmitting gating switch 250 is electrically connected to the transmitting gain compensator 236, the transmitting gain compensator 236 is electrically connected to the second power amplifier 234, and the second power amplifier 234 is connected to the first circulator 215.

[0064] The system also includes a second receiving component, which comprises a receive gating switch 260, a second limiter 239, a low-pass filter 240, a second low-noise preamplifier 241, a second preamplifier bandpass filter 242, a second low-noise gain amplifier 243, and a second bandpass filter 244 connected in sequence. The receive gating switch 260 is electrically connected to the second high-power RF switch 236. The receive gating switch 260 is used to select either a first receiving path or a second receiving path based on the received RF signal. The first receiving path consists of a high-pass filter 220, a first preamplifier low-noise amplifier 221, a first preamplifier bandpass filter 222, a first low-noise gain amplifier 223, and a first bandpass filter 224. The second receiving path consists of a low-pass filter 240, a second low-noise preamplifier 241, a second preamplifier bandpass filter 242, a second low-noise gain amplifier 243, and a second bandpass filter 244.

[0065] The receive gating switch 260 in this embodiment is the same as in the above embodiment, and the transmit gating switch 250 is similar. Specifically, the first transmitting component can form two transmit paths to transmit 5.8G / 2.4G radio frequency signals respectively, and the first receiving component and the second receiving component can form two receive paths to receive 5.8G / 2.4G radio frequency signals respectively. The working principle of the first transmitting component is as follows: when transmitting 5.8G radio frequency signals, the transmit gating switch 250 selects the first preamplifier 212, the first driver 213, and the first power amplifier 214 to transmit 5.8G radio frequency signals; when transmitting 2.4G radio frequency signals, it selects the first preamplifier 212, the first driver 213, the transmit gain compensator 236, and the first power amplifier 214 to transmit 2.4G frequency band signals. The two transmit paths can share the first preamplifier 212 and the first driver 213, which can further save components and greatly reduce production costs.

[0066] Please refer to Figure 7 , Figure 7 This is a schematic diagram of a radio frequency (RF) system according to an embodiment of the present invention. In this embodiment, the RF wireless system includes a drone 500, a signal amplifier 400, and an access point (AP) device 300. The signal amplifier 400 is electrically connected to both the drone 500 and the AP device 300. The signal amplifier 400 includes the aforementioned signal amplifier 400. The specific structure of the signal amplifier 400 is described in the above embodiments and will not be repeated here. Since this RF wireless system adopts all the technical solutions of all embodiments of the signal amplifier 400, it possesses at least all the advantages and beneficial effects brought about by the technical solutions of the aforementioned signal amplifier 400 embodiments, which will not be elaborated upon here.

[0067] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the technical concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A signal amplifier characterized by, include: A near-end display component and a far-end active amplifier component, wherein the near-end display component and the far-end active amplifier component are separated and are communicatively connected; The remote active amplifier assembly includes a remote communication module, a remote monitoring module, a remote controller, a remote amplification module, a remote power supply module, and a remote high-gain antenna. The remote controller is used to generate a transmission signal according to preset parameters and send it to the remote amplification module, and to receive the 2.4G / 5.8G frequency band radio frequency signal amplified by the remote amplification module. The remote amplification module is electrically connected to the remote controller and is used to amplify the transmitted signal to obtain a target signal with nominal power intensity, and transmit it to the remote high-gain antenna, as well as amplify the 2.4G / 5.8G frequency band radio frequency signal transmitted by the UAV and received by the remote high-gain antenna. The high-gain antenna at the far end is electrically connected to the far-end amplification module and is used to receive the target signal transmitted by the far-end amplification module and transmit the target signal outward to cover the preset area where the UAV flies, as well as to receive the 2.4G / 5.8G frequency band radio frequency signals transmitted outward by the UAV when flying in the preset area. The remote monitoring module is electrically connected to the remote controller and the remote communication module respectively, and is used to monitor the working status of the remote amplification module, the remote power supply module, the remote controller and the remote high-gain antenna in real time, and transmit the data to the near-end display component through the remote communication module. The remote power module is electrically connected to the remote communication module, the remote monitoring module, the remote amplification module, and the remote controller, respectively.

2. The signal amplifier of claim 1, wherein, The remote amplification module includes a first transmitting component and a first receiving component; The first transmitting component includes a first low-power radio frequency switch, a first preamplifier, a first driver, a first power amplifier, a first circulator, and a first high-power radio frequency switch connected in sequence. The first low-power radio frequency switch is used to electrically connect to the remote controller, and the first circulator is used to electrically connect to the remote high-gain antenna. The first receiving component includes a first limiter, a high-pass filter, a first preamplifier low-noise amplifier, a first preamplifier band-pass filter, a first low-noise gain amplifier, and a first band-pass filter connected in sequence. The first limiter is electrically connected to a first high-power RF switch, and the first band-pass filter is electrically connected to a first low-power RF switch.

3. The signal amplifier of claim 2, wherein, The remote amplification module also includes a second transmitting component and a second receiving component; The second transmitting component includes a second low-power RF switch, a second preamplifier, a second driver, a second power amplifier, a second circulator, and a second high-power RF switch connected in sequence. The second low-power RF switch is used to electrically connect to the remote controller, and the second circulator is used to electrically connect to the remote high-gain antenna. The second receiving component includes a second limiter, a low-pass filter, a second low-preamplifier, a second preamplifier bandpass filter, a second low-noise gain amplifier, and a second bandpass filter connected in sequence. The second limiter is electrically connected to a second high-power RF switch, and the second bandpass filter is electrically connected to a second low-power RF switch.

4. The signal amplifier of claim 3, wherein, The remote amplification module further includes a third bandpass filter, a fourth bandpass filter, and a duplexer. The third bandpass filter is electrically connected to a first low-power RF switch, the fourth bandpass filter is electrically connected to a second low-power RF switch, and the duplexer is electrically connected to the third and fourth bandpass filters respectively. The duplexer is used for wireless connection with an AP access device, wherein the AP access device is a remote controller or an external controller.

5. The signal amplifier of claim 4, wherein, The first transmitting component further includes a first RF load, and a first coupler, a first RF power detector and a first gain amplifier connected in sequence. The first coupler is used to be electrically connected to the remote controller, the first gain amplifier is used to be electrically connected to a first low-power RF switch, and the first RF load is electrically connected to a first high-power RF switch. The second transmitting component also includes a second RF load, and a second coupler, a second RF power detector, and a second gain amplifier connected in sequence. The second coupler is used to be electrically connected to the remote controller, the second gain amplifier is used to be electrically connected to a second low-power RF switch, and the second RF load is electrically connected to a second high-power RF switch. The first high-power RF switch is used to turn on the first RF load when transmitting a signal and to turn on the first limiter when receiving a RF signal; the second high-power RF switch is used to turn on the second RF load when transmitting a signal and to turn on the second limiter when receiving a RF signal.

6. The signal amplifier of claim 4, wherein, The first transmitting assembly also includes a first surge protector, one end of which is electrically connected to the first circulator, and the other end of which is grounded. The second transmitting assembly also includes a second surge protector, one end of which is electrically connected to the second circulator, and the other end of which is grounded.

7. The signal amplifier of claim 6, wherein, The first high-power radio frequency switch includes a switching chip, a first metal MOSFET, a second metal MOSFET, a first inductor, a second inductor, a third inductor, and a fourth inductor. The receiving end of the switching chip is connected to one end of the first inductor and one end of the third inductor, respectively. The other end of the first inductor is grounded. The other end of the third inductor is connected to the drain of the second metal MOSFET. The gate of the second metal MOSFET is connected to a preset voltage, and its source is grounded. The transmitting end of the switching chip is connected to one end of the second inductor. The other end of the second inductor is connected to the drain of the first metal MOSFET. The gate of the first metal MOSFET is connected to a preset voltage, and its source is grounded. The antenna end of the switching chip is connected to a bias voltage through the fourth inductor.

8. The signal amplifier of claim 3, wherein, The remote amplification module further includes a second transmitting component and a second receiving component. The second transmitting component includes a transmit gating switch, a second preamplifier, a second driver, and a second power amplifier connected in sequence. The second power amplifier is electrically connected to a first limiter. The transmit gating switch is electrically connected to the first low-power radio frequency switch and is used to select either a first transmitting path or a second transmitting path according to the transmitted signal. The first transmitting path consists of a first preamplifier, a first driver, and a first power amplifier. The second transmitting path consists of a second preamplifier, a second driver, and a second power amplifier. The second receiving component further includes a receiving gating switch, a second limiter, a low-pass filter, a second low-noise preamplifier, a second preamplifier band-pass filter, a second low-noise gain amplifier, and a second band-pass filter connected in sequence. The receiving gating switch is electrically connected to the second high-power RF switch. The receiving gating switch is used to select a first receiving path or a second receiving path according to the received RF signal. The first receiving path consists of a high-pass filter, a first preamplifier low-noise amplifier, a first preamplifier band-pass filter, a first low-noise gain amplifier, and a first band-pass filter. The second receiving path consists of a low-pass filter, a second low-noise preamplifier, a second preamplifier band-pass filter, a second low-noise gain amplifier, and a second band-pass filter.

9. The signal amplifier of claim 3, wherein, The first transmitting assembly further includes a transmit gating switch, a transmit gain compensator, and a second power amplifier. The first terminal of the transmit gating switch is electrically connected to the first driver, the second terminal of the transmit gating switch is electrically connected to the first power amplifier, the third terminal of the transmit gating switch is electrically connected to the transmit gain compensator, the transmit gain compensator is electrically connected to the second power amplifier, and the second power amplifier is connected to the first circulator. It also includes a second receiving component, which comprises a receive gating switch, a second limiter, a low-pass filter, a second low-noise preamplifier, a second preamplifier band-pass filter, a second low-noise gain amplifier, and a second band-pass filter connected in sequence. The receive gating switch is electrically connected to the second high-power RF switch. The receive gating switch is used to select a first receiving path or a second receiving path according to the received RF signal. The first receiving path consists of a high-pass filter, a first preamplifier low-noise amplifier, a first preamplifier band-pass filter, a first low-noise gain amplifier, and a first band-pass filter. The second receiving path consists of a low-pass filter, a second low-noise preamplifier, a second preamplifier band-pass filter, a second low-noise gain amplifier, and a second band-pass filter.

10. A radio frequency wireless system, characterized by The radio frequency wireless system includes a drone, a signal amplifier, and an access point (AP) device. The signal amplifier is electrically connected to both the drone and the AP device. The signal amplifier includes the signal amplifier described in any one of claims 1 to 9.

Images