Omnidirectional indoor antenna system

Abstract

The embodiment of the invention provides an omnidirectional indoor antenna system, which comprises a satellite gateway, a multi-system combination access platform, a power divider or coupler, an adjustable radio frequency control unit and an omnidirectional antenna, and is characterized in that the satellite gateway converts a received multi-band satellite signal into a multi-band electric signal and transmits the multi-band electric signal to the multi-system combination access platform; the platform combines the multi-band electric signals and outputs the multi-band electric signals to the power divider or the coupler, and the power divider or the coupler distributes the multi-band electric signals output by the multi-system combined access platform to the omnidirectional antenna through the adjustable radio frequency control unit. And the adjustable radio frequency control unit is used for performing time delay adjustment on the received multi-band electric signal according to a preset time delay parameter, and / or performing gain adjustment according to a preset gain parameter, and transmitting the adjusted signal to the omnidirectional antenna. According to the invention, the coverage range and the signal quality of the multi-band signal of the indoor environment can be improved, the time delay adjustment and the gain adjustment of the signals of different bands are realized, and the flexibility and the adaptability of the antenna are improved.

Description

Technical Field

[0001] The embodiments of the present application relate to the field of antenna technology, and in particular to an omnidirectional indoor antenna system. Background Art

[0002] With the development of communication technology, the demand for indoor communication and satellite signal coverage is increasing. The indoor distributed antenna system uses antennas placed indoors to evenly distribute the signal to every corner of the room to ensure signal coverage in the indoor area. The existing indoor distributed antenna system mainly supports the access of signal sources such as repeaters, macro cells and micro cells. Due to the limitations of antenna firmware, the access to multi-band satellite signals is limited. In addition, the indoor distributed antenna system and satellite forwarding system have the problem that the multi-band signal gain and delay cannot be flexibly configured. Summary of the invention

[0003] In view of this, an object of the embodiments of the present application is to provide an omnidirectional indoor antenna system.

[0004] Based on the above purpose, the embodiment of the present application provides an omnidirectional indoor antenna system, including: a satellite gateway, a multi-system combined access platform, a power divider or coupler, an adjustable radio frequency control unit and an omnidirectional antenna;

[0005] The satellite gateway converts the received multi-band satellite signals into multi-band electrical signals, and transmits the multi-band electrical signals to the multi-system combined access platform;

[0006] The multi-system combining access platform combines and outputs the electrical signals of multiple frequency bands to at least one power divider or coupler;

[0007] The power divider or coupler distributes the multi-band electrical signals output by the multi-system combined access platform to the omnidirectional antenna through the adjustable radio frequency control unit;

[0008] The adjustable RF control unit is used to perform delay adjustment on the received multi-band electrical signals according to preset delay parameters, and / or perform gain adjustment on the received multi-band electrical signals according to preset gain parameters, and transmit the adjusted signals to the omnidirectional antenna.

[0009] Optionally, the satellite gateway is used to set multi-frequency programmable parameters, which include gain parameter adjustment ranges for satellite signals in different frequency bands and delay parameter adjustment ranges for satellite signals in different frequency bands, and send the multi-frequency programmable parameters to the adjustable RF control unit.

[0010] Optionally, the adjustable radio frequency control unit includes a fixed gain amplifier and at least one variable gain amplifier;

[0011] The fixed gain amplifier is used to amplify the received multi-band electrical signal according to a preset fixed gain parameter to obtain an amplified multi-band electrical signal;

[0012] The at least one variable gain amplifier is used to amplify the amplified multi-band electrical signal according to a preset variable gain parameter; wherein the variable gain parameter is set based on the gain parameter adjustment range.

[0013] Optionally, the variable gain parameter includes multiple variable gain parameters for different frequency bands;

[0014] The at least one variable gain amplifier is used to amplify the amplified electrical signal of the corresponding frequency band according to each variable gain parameter.

[0015] Optionally, the adjustable radio frequency control unit includes a phase shifter and at least one delay circuit;

[0016] The phase shifter is used to phase-modulate the received multi-band electrical signal to obtain a phase-modulated multi-band electrical signal;

[0017] The delay circuit is used to perform delay adjustment on the phase-modulated multi-band electrical signal according to a preset delay parameter; wherein the delay parameter is set based on the delay parameter adjustment range.

[0018] Optionally, the delay parameter includes multiple delay parameters for different frequency bands;

[0019] The time delay circuit is used to perform time delay adjustment on the phase-modulated electrical signal of the corresponding frequency band according to each time delay parameter.

[0020] Optionally, the adjustable radio frequency control unit includes a communication control unit, and the communication control unit is used to configure variable gain parameters and delay parameters of electrical signals in different frequency bands based on the multi-frequency programmable parameters.

[0021] Optionally, the adjustable radio frequency control unit includes a communication control unit, a phase shifter, a first-stage amplifier, a first-stage delay line, a second-stage amplifier, a second-stage delay line, a third-stage amplifier and a third-stage delay line;

[0022] The phase shifter is used to perform phase modulation processing on the received multi-band electrical signal, the phase-modulated multi-band electrical signal is amplified by the first-stage amplifier according to a fixed gain parameter, and the amplified multi-band electrical signal is delayed by the first-stage delay line according to a preset first-stage delay parameter;

[0023] For the electrical signal of a specific frequency, it is amplified and processed by the second-stage amplifier according to the preset second-stage gain parameters, and the amplified electrical signal of the specific frequency band is delayed and adjusted by the second-stage delay line according to the preset second-stage delay parameters. If the electrical signal of the specific frequency band meets the requirements after amplification and delay processing, it is output to the omnidirectional antenna. If it does not meet the requirements, it is amplified and processed by the three-stage amplifier according to the preset three-stage gain parameters, and the amplified electrical signal of the specific frequency band is delayed and adjusted by the three-stage delay line according to the preset three-stage delay parameters.

[0024] Optionally, the system further includes a multi-band extension unit for frequency band extension, and the feeding end of the omnidirectional antenna is connected to the multi-band extension unit.

[0025] From the above, it can be seen that the omnidirectional indoor antenna system provided in the embodiment of the present application includes a satellite gateway, a multi-system combining access platform, a power divider or coupler, an adjustable RF control unit and an omnidirectional antenna, etc., which can support omnidirectional amplification of multi-band satellite signals and signals of major mobile communication frequency bands, and can improve the coverage and signal quality of multi-band signals in indoor environments. The adjustable RF control unit can realize delay adjustment and gain adjustment of signals in different frequency bands, thereby improving the flexibility and adaptability of the antenna. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0027] Figure 1 This is a block diagram of the antenna structure of an embodiment of the present application;

[0028] Figure 2 This is a structural block diagram of an adjustable radio frequency control unit according to an embodiment of the present application. DETAILED DESCRIPTION

[0029] In order to make the objectives, technical solutions and advantages of the present disclosure more clearly understood, the present disclosure is further described in detail below in combination with specific embodiments and with reference to the accompanying drawings.

[0030] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the embodiments of the present application should be the usual meanings understood by people with ordinary skills in the field to which the present disclosure belongs. The "first", "second" and similar words used in the embodiments of the present application do not represent any order, quantity or importance, but are only used to distinguish different components. "Including" or "comprising" and similar words mean that the elements or objects appearing in front of the word cover the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connecting" or "connected" and similar words are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to represent relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0031] In the related technology, the coverage of mobile communications and satellite signals can be expanded by configuring pico base stations or other equipment, which adds additional costs. It is still difficult to support multi-band satellite signals in complex indoor environments. Moreover, the related indoor antenna systems and satellite forwarding systems are unable to adjust the delay and gain of multi-band signals, and it is difficult to flexibly adjust them according to actual needs.

[0032] In view of this, an embodiment of the present application provides an omnidirectional indoor antenna system that can achieve coverage of multi-band signals in an indoor environment, and can adjust the delay and gain of multi-band signals to meet the application requirements of signals in different frequency bands.

[0033] The technical solution of the present application is further described in detail below through specific embodiments.

[0034] like Figure 1 As shown, an embodiment of the present application provides an omnidirectional indoor antenna system, including: a satellite gateway, a multi-system combined access platform, a power divider or coupler, an adjustable radio frequency control unit and an omnidirectional antenna;

[0035] The satellite gateway converts the received multi-band satellite signals into multi-band electrical signals, and transmits the multi-band electrical signals to the multi-system combined access platform;

[0036] The multi-system combining access platform combines and outputs the electrical signals of multiple frequency bands to at least one power divider or coupler;

[0037] The power divider or coupler distributes the multi-band electrical signals output by the multi-system combined access platform to the omnidirectional antenna through the adjustable radio frequency control unit;

[0038] The adjustable RF control unit is used to adjust the delay of the received multi-band electrical signals according to the preset delay parameters, and / or to adjust the gain of the received multi-band electrical signals according to the preset gain parameters, and transmit the adjusted signals to the omnidirectional antenna.

[0039] The omnidirectional indoor antenna system provided in this embodiment uses a satellite gateway to receive multi-band satellite signals and convert them into multi-band electrical signals, and transmits the multi-band electrical signals to a multi-system combining access platform. The multi-system combining access platform combines the received multi-band electrical signals and outputs them to multiple power dividers or couplers. The power dividers or couplers transmit the multi-band electrical signals to an adjustable frequency control unit. The adjustable frequency control unit uses the multi-band electrical signals to perform delay adjustment and / or gain adjustment, and then transmits the adjusted signals to the omnidirectional antenna.

[0040] Among them, the satellite gateway forwards multi-band satellite signals to the multi-system combined access platform to achieve wide-range satellite signal coverage. In some methods, the satellite gateway amplifies the received multi-band satellite signals, converts the amplified satellite signals into electrical signals, transmits the electrical signals to the multi-system combined access platform, and screens the amplified satellite signals to remove invalid signals or low-quality signals to ensure the signal quality of subsequent transmission and processing. The satellite gateway parses the satellite observation data through the storage and program control module to obtain observation parameters such as clock error, and sets multi-frequency program control parameters. The multi-frequency program control parameters include the frequency band of the satellite signal selected for use, the gain parameter adjustment range for satellite signals of different frequency bands, and the delay parameter adjustment range for satellite signals of different frequency bands. The clock error, multi-frequency program control parameters and other related information are forwarded to the adjustable RF control unit.

[0041] In some embodiments, the adjustable radio frequency control unit includes a fixed gain amplifier and at least one variable gain amplifier;

[0042] The fixed gain amplifier is used to amplify the received multi-band electrical signal according to a preset fixed gain parameter to obtain an amplified multi-band electrical signal;

[0043] At least one variable gain amplifier is used to amplify the amplified multi-band electrical signal according to a preset variable gain parameter; wherein the variable gain parameter is set based on a gain parameter adjustment range.

[0044] In this embodiment, the adjustable radio frequency control unit can be used to adjust the gain of multi-band electrical signals, ensure the strength and quality of multi-band electrical signals during transmission, achieve satellite signal coverage, and provide auxiliary positioning functions. The adjustable radio frequency control unit includes a fixed gain amplifier and one or more variable gain amplifiers. For the received multi-band electrical signals, the fixed gain amplifier is first used to perform preliminary amplification processing according to the fixed gain parameters to ensure that the signal strength meets the transmission requirements. After that, the variable gain amplifier is used to amplify according to the set variable gain parameters to achieve signal gain adjustment.

[0045] In some embodiments, the variable gain parameter includes a plurality of variable gain parameters for different frequency bands;

[0046] At least one variable gain amplifier is used to amplify the amplified electrical signal of the corresponding frequency band according to each variable gain parameter.

[0047] In this embodiment, corresponding variable gain parameters can be set for electrical signals in multiple frequency bands, that is, the gains of electrical signals in different frequency bands are adjusted according to different variable gain parameters to optimize the coverage and reception effects of signals in different frequency bands to adapt to complex indoor environments.

[0048] In some embodiments, the communication control unit is used to configure variable gain parameters and delay parameters of electrical signals in different frequency bands based on multi-frequency programmable parameters received from a satellite gateway.

[0049] In this embodiment, according to the signal quality and indoor coverage requirements, the communication control circuit can be used to set variable gain parameters for electrical signals of different frequency bands based on the gain parameter adjustment range in the multi-frequency programmable parameters, that is, the variable gain parameters suitable for the electrical signals of a specific frequency band are selected from the gain parameter adjustment range of the electrical signals of the frequency band. For example, a first gain parameter is set for the electrical signal of the first frequency band, and the first gain parameter is within the gain parameter adjustment range of the electrical signal of the first frequency band (corresponding to the gain parameter adjustment range of the satellite signal of the corresponding frequency band); a second gain parameter is set for the electrical signal of the second frequency band, and the second gain parameter is within the gain parameter adjustment range of the electrical signal of the second frequency band; the setting method and value of the variable gain parameter are not specifically limited.

[0050] In some embodiments, the adjustable radio frequency control unit includes a phase shifter and at least one delay circuit;

[0051] The phase shifter is used to phase-modulate the received multi-band electrical signal to obtain a phase-modulated multi-band electrical signal;

[0052] The delay circuit is used to perform delay adjustment on the phase-modulated multi-band electrical signals according to preset delay parameters; wherein the delay parameters are set based on the delay parameter adjustment range.

[0053] In this embodiment, the adjustable radio frequency control unit can be used to adjust the delay of multi-band electrical signals to ensure that the multi-band electrical signals can maintain synchronization during transmission and provide auxiliary positioning functions. The adjustable radio frequency control unit includes a phase shifter and one or more delay circuits. For the received multi-band electrical signals, the phase shifter is first used to perform phase adjustment processing according to the clock difference received from the satellite gateway, and the phase of the signals of different frequency bands is corrected by phase adjustment. Subsequently, the delay is adjusted based on the signal with the corrected phase to ensure the difference of the subsequent configuration delay. After that, the delay circuit is used to adjust the delay of the electrical signal according to the set delay parameters.

[0054] In some embodiments, the delay parameter includes a plurality of delay parameters for different frequency bands;

[0055] The time delay circuit is used to perform time delay adjustment on the electrical signal of the corresponding frequency band after phase modulation according to each time delay parameter.

[0056] In this embodiment, corresponding delay parameters can be set for electrical signals in multiple frequency bands, that is, the delays of electrical signals in different frequency bands are adjusted according to different delay parameters. By delaying electrical signals in different frequency bands to different degrees, the auxiliary positioning function is realized by utilizing the delays of multi-frequency band electrical signals with time differentiation. In some methods, in delay difference positioning, the distance and position of the signal source can be calculated by measuring the arrival time difference of signals from different receivers. Due to the different signal propagation characteristics of different frequency bands, low-frequency signals propagate farther, and high-frequency signals are more suitable for ranging. Combining the delays of signals in different frequency bands can improve the accuracy of positioning in multi-path and complex environments.

[0057] In some embodiments, the communication control circuit can be used to set the delay parameters for electrical signals of different frequency bands based on the delay parameter adjustment range in the multi-frequency programmable parameters, that is, the delay parameters suitable for the electrical signals of a specific frequency band are selected from the delay parameter adjustment range of the electrical signals of the specific frequency band. For example, a first delay parameter is set for the electrical signals of the first frequency band, and the first delay parameter is within the delay parameter adjustment range of the electrical signals of the first frequency band (corresponding to the delay parameter adjustment range of the satellite signals of the corresponding frequency band), and a second delay parameter is set for the electrical signals of the second frequency band, and the second delay parameter is within the delay parameter adjustment range of the electrical signals of the second frequency band; the setting method and value of the delay parameters are not specifically limited. The delay circuit can be implemented based on a variable delay line, and corresponding multi-stage delay lines can be set for different delay parameters to achieve corresponding delay adjustment.

[0058] like Figure 2As shown, in some embodiments, the adjustable RF control unit includes a power supply unit, a communication control unit, a phase shifter, a first-stage amplifier, a first-stage delay line, a second-stage amplifier, a second-stage delay line, a third-stage amplifier and a third-stage delay line, and the power supply unit is used to power the adjustable RF control unit. The adjustable radio frequency control unit receives multi-band electrical signals from a power divider or a coupler, as well as clock errors, multi-frequency program control parameters and other parameters from a satellite gateway; for the received multi-band electrical signals, a phase shifter is used to perform phase modulation processing, and the phase-modulated multi-band electrical signals are amplified and processed by a first-stage amplifier according to a fixed gain parameter, and the amplified multi-band electrical signals are delayed and adjusted by a first-stage delay line according to a preset first-stage delay parameter; according to the application scenario and actual needs, the electrical signals of a specific frequency are amplified and processed by a second-stage amplifier according to the set second-stage gain parameter, and the amplified electrical signals of the specific frequency band are delayed and adjusted by a second-stage delay line according to a preset second-stage delay parameter. If the electrical signals of the specific frequency band after amplification and delay processing have met the requirements, they are output to the omnidirectional antenna. If the requirements are still not met, they are continued to be amplified and processed by a third-stage amplifier according to the set third-stage gain parameter, and the amplified electrical signals of the specific frequency band are delayed and adjusted by a third-stage delay line according to a preset third-stage delay parameter, and the electrical signals of the specific frequency band after amplification and delay processing are output to the omnidirectional antenna. The above is only an exemplary structural description of the adjustable RF control unit. The number and setting method of the amplifiers and delay lines can be configured according to the application scenario. This example is not used to limit the structural configuration of the adjustable RF control unit.

[0059] In some embodiments, the omnidirectional indoor antenna system further includes a multi-band extension unit for frequency band extension, and the feed end of the omnidirectional antenna is connected to the multi-band extension unit. When the environment in which the omnidirectional antenna is located requires frequency band extension, the multi-band extension unit can be used to perform frequency band extension and further process the signal in a parasitic branching manner, thereby supporting the access and transmission of signals in more frequency bands, and improving the applicability and coverage of the antenna.

[0060] In some methods, the omnidirectional antenna is used to omnidirectionally radiate the signal processed by the adjustable radio frequency control unit, ensuring that the signal is radiated in all horizontal directions with approximately equal gain, achieving omnidirectional coverage, and supporting the same directivity diagram for multi-band signals. According to the application scenario and multi-band requirements, different types of omnidirectional antennas can be selected to achieve the best performance and coverage effect.

[0061] Among them, the omnidirectional antenna includes a radiation unit, a matching network, etc. The radiation unit is composed of multiple vertically arranged antenna elements, which can achieve uniform omnidirectional signal radiation in the horizontal direction. The antenna elements are precisely designed to ensure that signals in different frequency bands can achieve approximately equal gain radiation. The matching network is used to adjust the impedance matching between the antenna and the RF signal, optimize according to the requirements of different frequency bands, improve the transmission quality of signals in different frequency bands, and ensure the best signal transmission efficiency.

[0062] In some embodiments, a modular design can be adopted. On the basis of an adjustable radio frequency control unit and a multi-band extension unit, the same directivity diagram supporting signals of different frequency bands can be selected and customized into corresponding models according to application scenarios and actual needs to improve the adaptability and configuration flexibility of the antenna. The modular system integration method can reduce deployment and maintenance costs, improve the economy and scalability of the system, and provide an effective solution for communication and auxiliary positioning in complex indoor environments.

[0063] In some embodiments, the omnidirectional indoor antenna system can support multi-band signals of multiple satellite positioning systems, such as GPS (Global Positioning System), Beidou (Beidou Navigation Satellite System, BDS), Galileo, GLONASS, etc. The multi-band signals include but are not limited to L1, L2, L5, B1, B2, B3 and other bands. Different frequency bands can be selected according to the application scenarios. It supports multi-band signal coverage and indoor auxiliary positioning functions, which can improve the adaptability and stability of the antenna in complex indoor environments.

[0064] In some embodiments, the omnidirectional indoor antenna also supports major mobile communication frequency bands, as shown in Table 1.

[0065] Table 1 Supported mobile communication frequency bands

[0066]

[0067] The omnidirectional indoor antenna system provided in the embodiment of the present application can access multi-band satellite signals and mobile communication bands through a satellite gateway, a multi-system combined access platform, an adjustable radio frequency control unit, etc., and use the adjustable radio frequency control unit to perform delay adjustment and / or gain adjustment on the received multi-band signals, thereby improving the coverage range and signal quality of multi-band signals in the indoor environment, reducing blind spots and weak signal areas in signal coverage, and performing personalized gain adjustment and delay adjustment for signals of different frequency bands, thereby improving the flexibility and adaptability of the antenna in different application environments, and realizing the auxiliary positioning function of the indoor environment, ensuring that the system can work efficiently and stably within the coverage range of different satellite positioning systems.

[0068] Those skilled in the art should understand that the discussion of any of the above embodiments is merely illustrative and is not intended to imply that the scope of the present disclosure (including the claims) is limited to these examples. Based on the concept of the present disclosure, the technical features in the above embodiments or different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of the different aspects of the embodiments of the present application as described above, which are not provided in detail for the sake of simplicity.

[0069] In addition, to simplify the description and discussion, and in order not to make the embodiments of the present application difficult to understand, the known power supply / ground connection with the integrated circuit (IC) chip and other components may or may not be shown in the provided drawings. In addition, the device can be shown in the form of a block diagram to avoid making the embodiments of the present application difficult to understand, and this also takes into account the fact that the details of the implementation of these block diagram devices are highly dependent on the platform to be implemented in the embodiments of the present application (that is, these details should be fully within the scope of understanding of those skilled in the art). In the case of elaborating specific details (e.g., circuits) to describe exemplary embodiments of the present disclosure, it is obvious to those skilled in the art that the embodiments of the present application can be implemented without these specific details or when these specific details are changed. Therefore, these descriptions should be considered illustrative rather than restrictive.

[0070] Although the present disclosure has been described in conjunction with specific embodiments of the present disclosure, many replacements, modifications and variations of these embodiments will be apparent to those skilled in the art from the foregoing description. For example, other memory architectures (e.g., dynamic RAM (DRAM)) may use the embodiments discussed.

[0071] The embodiments of the present application are intended to cover all such substitutions, modifications and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the embodiments of the present application should be included in the scope of protection of the present disclosure.

Claims

1. An omnidirectional indoor antenna system, characterized in that: include: Satellite gateway, multi-system combined access platform, power splitter or coupler, adjustable RF control unit and omnidirectional antenna; The satellite gateway converts the received multi-band satellite signals into multi-band electrical signals, and transmits the multi-band electrical signals to the multi-system combined access platform; The multi-system combining access platform combines and outputs the electrical signals of multiple frequency bands to at least one power divider or coupler; The power divider or coupler distributes the multi-band electrical signals output by the multi-system combined access platform to the omnidirectional antenna through the adjustable radio frequency control unit; The adjustable RF control unit is used to perform delay adjustment on the received multi-band electrical signals according to preset delay parameters, and / or perform gain adjustment on the received multi-band electrical signals according to preset gain parameters, and transmit the adjusted signals to the omnidirectional antenna.

2. The system according to claim 1, characterized in that The satellite gateway is used to set multi-frequency program-controlled parameters, which include gain parameter adjustment ranges for satellite signals of different frequency bands and delay parameter adjustment ranges for satellite signals of different frequency bands, and send the multi-frequency program-controlled parameters to the adjustable RF control unit.

3. The system according to claim 1, characterized in that The adjustable radio frequency control unit includes a fixed gain amplifier and at least one variable gain amplifier; The fixed gain amplifier is used to amplify the received multi-band electrical signal according to a preset fixed gain parameter to obtain an amplified multi-band electrical signal; The at least one variable gain amplifier is used to amplify the amplified multi-band electrical signal according to a preset variable gain parameter; wherein the variable gain parameter is set based on the gain parameter adjustment range.

4. The system according to claim 3, characterized in that The variable gain parameters include a plurality of variable gain parameters for different frequency bands; The at least one variable gain amplifier is used to amplify the amplified electrical signal of the corresponding frequency band according to each variable gain parameter.

5. The system according to claim 2, characterized in that The adjustable radio frequency control unit includes a phase shifter and at least one delay circuit; The phase shifter is used to phase-modulate the received multi-band electrical signal to obtain a phase-modulated multi-band electrical signal; The delay circuit is used to perform delay adjustment on the phase-modulated multi-band electrical signal according to a preset delay parameter; wherein the delay parameter is set based on the delay parameter adjustment range.

6. The system according to claim 5, characterized in that The delay parameter includes a plurality of delay parameters for different frequency bands; The time delay circuit is used to perform time delay adjustment on the phase-modulated electrical signal of the corresponding frequency band according to each time delay parameter.

7. The system according to any one of claims 2 to 6, characterized in that: The adjustable radio frequency control unit comprises a communication control unit, and the communication control unit is used to configure variable gain parameters and delay parameters of electrical signals in different frequency bands based on the multi-frequency programmable parameters.

8. The system according to claim 1, characterized in that The adjustable radio frequency control unit includes a communication control unit, a phase shifter, a first-stage amplifier, a first-stage delay line, a second-stage amplifier, a second-stage delay line, a third-stage amplifier and a third-stage delay line; The phase shifter is used to perform phase modulation processing on the received multi-band electrical signal, the phase-modulated multi-band electrical signal is amplified by the first-stage amplifier according to a fixed gain parameter, and the amplified multi-band electrical signal is delayed by the first-stage delay line according to a preset first-stage delay parameter; For the electrical signal of a specific frequency, it is amplified and processed by the second-stage amplifier according to the preset second-stage gain parameters, and the amplified electrical signal of the specific frequency band is delayed and adjusted by the second-stage delay line according to the preset second-stage delay parameters. If the electrical signal of the specific frequency band meets the requirements after amplification and delay processing, it is output to the omnidirectional antenna. If it does not meet the requirements, it is amplified and processed by the three-stage amplifier according to the preset three-stage gain parameters, and the amplified electrical signal of the specific frequency band is delayed and adjusted by the three-stage delay line according to the preset three-stage delay parameters.

9. The system according to claim 1, characterized in that It also includes a multi-band extension unit for frequency band extension, and the feeding end of the omnidirectional antenna is connected to the multi-band extension unit.

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