Multiband communication system and method of constructing a multiband communication system

Abstract

The application provides a multi-band communication system and a multi-band communication system construction method, which comprises an antenna, a first ferrite circulator with double working frequency bands, first and second communication devices; wherein the first ferrite circulator comprises a microstrip interface, double parallel microstrip lines, a metal via column, an upper dielectric substrate, a ground metal plane, a lower dielectric substrate, upper and lower circulator center joints with different radii, and upper and lower ferrite discs with different radii; the microstrip interface comprises sub-interfaces connected with the antenna, the first and second communication devices respectively; the first and second communication devices correspond to double working frequency bands, and the double working frequency bands are the same as the working frequency bands of the first ferrite circulator; or the working frequency bands corresponding to the first and second communication devices are different. The communication system is based on the first ferrite circulator, realizes multi-band communication in different forms, and ensures that the signals of different frequency bands have high isolation.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electronic application and detection, and particularly relates to a multi-band communication system and a multi-band communication system construction method. BACKGROUND

[0002] Non-reciprocal passive devices are indispensable components of high-performance transceivers in communication systems and radar RF front-ends. Circulators and isolators protect very sensitive receivers, working in duplex mode with a transmitter connected to the same antenna. Ferrite, as a gyromagnetic material, produces gyromagnetic properties after being biased by an applied DC magnetic field, causing the Faraday effect and ferromagnetic resonance when electromagnetic waves pass through the ferrite, thereby producing a ring-shaped one-way transmission while absorbing the energy of reverse transmission. Ferrite circulators rely more on the performance parameters of ferrite materials, resulting in that the design of ferrite is more limited by materials than other microwave devices (such as antennas), which affects the construction efficiency and cost of the multi-band communication system. SUMMARY

[0003] Embodiments of the present application provide a multi-band communication system and a multi-band communication system construction method to solve the problem that the design of ferrite is more limited by materials in duplex mode, which affects the construction efficiency and cost of the multi-band communication system.

[0004] In a first aspect, embodiments of the present application provide a multi-band communication system, characterized in that it comprises an antenna, a first ferrite circulator with double working frequency bands, a first communication device and a second communication device.

[0005] The first ferrite circulator comprises a microstrip interface, a double-path parallel microstrip line, an upper circulator center junction, a metal via column, an upper ferrite disc, an upper dielectric substrate, a ground metal plane, a lower ferrite disc, a lower dielectric substrate and a lower circulator center junction.

[0006] The double-path parallel microstrip line connects the upper circulator center junction and the lower circulator center junction in parallel through three metal via columns; the upper ferrite disc is embedded in the upper dielectric substrate; the lower ferrite disc is embedded in the lower dielectric substrate; the ground metal plane is arranged between the upper dielectric substrate and the lower dielectric substrate, and the upper ferrite disc and the lower ferrite disc are separated by the ground metal plane; the radii of the upper circulator center junction and the lower circulator center junction are different; the radii of the upper ferrite disc and the lower ferrite disc are different.

[0007] The microstrip interface comprises sub-interfaces connected to the antenna, the first communication device and the second communication device respectively.

[0008] The first communication device and the second communication device correspond to double working frequency bands, and the double working frequency bands are the same as the working frequency band of the first ferrite circulator; or the working frequency bands corresponding to the first communication device and the second communication device are different.

[0009] In a possible implementation, when the first communication device and the second communication device correspond to double working frequency bands, the first communication device and the second communication device are a double-frequency receiver and a double-frequency transmitter respectively.

[0010] The polarities of the upper ferrite disc and the lower ferrite disc in the first ferrite circulator are opposite to each other near the ground metal plane.

[0011] In a possible implementation, when the working frequency bands corresponding to the first communication device and the second communication device are different, the first communication device and the second communication device are a transmitter, a receiver or a duplex communication device.

[0012] The polarities of the upper ferrite disc and the lower ferrite disc in the first ferrite circulator are the same near the ground metal plane.

[0013] In a possible implementation, when the working frequency bands corresponding to the first communication device and the second communication device are different, and the first communication device and the second communication device are duplex communication devices, the multi-frequency band communication system further comprises:

[0014] A second ferrite circulator and a third ferrite circulator with double working frequency bands;

[0015] The microstrip interface of the second ferrite circulator is connected to one sub-microstrip interface of the first ferrite circulator, a transmitter of the first communication device and a receiver of the first communication device respectively.

[0016] The microstrip interface of the third ferrite circulator is connected to another sub-microstrip interface of the first ferrite circulator, a transmitter of the second communication device and a receiver of the second communication device respectively.

[0017] The polarities of the upper ferrite disc and the lower ferrite disc in the second ferrite circulator and the third ferrite circulator are opposite to each other near the ground metal plane.

[0018] In a second aspect, an embodiment of the present application provides a multi-frequency band communication system construction method, comprising:

[0019] Obtaining communication device type information in a multi-frequency band communication system;

[0020] determine a target type of the first ferrite circulator with double operating frequency bands according to the communication device type information;

[0021] connect the first ferrite circulator, the communication device and the antenna corresponding to the target type;

[0022] The communication device type information includes that the first communication device and the second communication device correspond to double operating frequency bands, and the double operating frequency bands are the same as the operating frequency bands of the first ferrite circulator; or the operating frequency bands corresponding to the first communication device and the second communication device are different.

[0023] In a possible implementation, when the communication device type information includes that the first communication device and the second communication device correspond to double operating frequency bands, or the first communication device and the second communication device are a double-frequency receiver and a double-frequency transmitter respectively, the target type of the first ferrite circulator is determined as:

[0024] In the first ferrite circulator, the polarities of the upper ferrite disc and the lower ferrite disc close to the ground metal plane are opposite.

[0025] In a possible implementation, the connection of the first ferrite circulator, the communication device and the antenna corresponding to the target type includes:

[0026] The microstrip interfaces of the first ferrite circulator are connected to the antenna, the first communication device and the second communication device respectively.

[0027] In a possible implementation, when the communication device type information includes that the operating frequency bands corresponding to the first communication device and the second communication device are different, or the first communication device and the second communication device are all transmitters, all receivers or all duplex communication devices, the target type of the first ferrite circulator is determined as:

[0028] In the first ferrite circulator, the polarities of the upper ferrite disc and the lower ferrite disc close to the ground metal plane are the same.

[0029] In a possible implementation, the connection of the first ferrite circulator, the communication device and the antenna corresponding to the target type includes:

[0030] When the first communication device and the second communication device are all transmitters or all receivers, the microstrip interfaces of the first ferrite circulator are connected to the antenna, the first communication device and the second communication device respectively.

[0031] In a possible implementation, when the first communication device and the second communication device are both duplex communication devices, the method further includes:

[0032] determining a target type of a second ferrite circulator and a third ferrite circulator with double operating frequency bands; wherein, in the second ferrite circulator and the third ferrite circulator, polarities of the upper ferrite disc and the lower ferrite disc close to the ground metal plane are opposite;

[0033] Correspondingly, the connection of the target type corresponding to the first ferrite circulator, the communication device and the antenna comprises:

[0034] The microstrip interface of the second ferrite circulator is connected to one sub-microstrip interface of the first ferrite circulator, a transmitter of the first communication device and a receiver of the first communication device respectively;

[0035] The microstrip interface of the third ferrite circulator is connected to another sub-microstrip interface of the first ferrite circulator, a transmitter of the second communication device and a receiver of the second communication device respectively.

[0036] In a possible implementation, the operating frequency band of the transmitter of the first communication device is the same as the operating frequency band of the receiver of the second communication device; and the operating frequency band of the receiver of the first communication device is the same as the operating frequency band of the transmitter of the second communication device.

[0037] The embodiment of the present application provides a multi-band communication system and a multi-band communication system construction method, the multi-band communication system comprises: an antenna, a first ferrite circulator with double working frequency bands, a first communication device and a second communication device. The first ferrite circulator is provided with ferrite wafers, a dielectric substrate and a circulator center joint on both sides of a ground metal plane, and a double-circuit parallel microstrip line connects the upper circulator center joint and the lower circulator center joint in parallel through three metal via columns, realizes parallel connection of two junction type circulator structures, and ensures that the ferrite circulator can work in two working frequency bands at the same time through different designs of the two circulator center joints and the ferrite wafers, and can provide high isolation and low insertion loss in the two frequency bands. The microstrip interface comprises sub-interfaces connected with the antenna, the first communication device and the second communication device respectively, realizes signal transmission of the two communication devices based on the shared antenna, and can meet the communication demand of different communication scenes. The communication scene is roughly divided into: the first communication device and the second communication device correspond to double working frequency bands, and the double working frequency bands are the same as the working frequency bands of the first ferrite circulator; or the working frequency bands corresponding to the first communication device and the second communication device are different. The communication system is based on the first ferrite circulator with double working frequency bands, realizes various multi-band communication scenes, and can also ensure high isolation between signals of different frequency bands. Because the communication system can communicate in different frequency bands, the problem of frequency band congestion is avoided, and the stability and reliability of communication are improved. In addition, because the signals of different frequency bands have high isolation, the interference between signals can be effectively reduced, and the communication quality is improved. BRIEF DESCRIPTION OF DRAWINGS

[0038] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments or prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0039] Figure 1 It is a structure schematic diagram of the ferrite circulator with double working frequency bands provided by an embodiment of the present application.

[0040] Figure 2 It is a structure schematic diagram of the ferrite circulator with double working frequency bands provided by an embodiment of the present application.

[0041] Figure 3 It is a structure schematic diagram of the ferrite circulator with double working frequency bands provided by another embodiment of the present application.

[0042] Figure 4 It is an architecture schematic diagram of the multi-band communication system provided by an embodiment of the present application.

[0043] Figure 5 is a schematic diagram of the architecture of a multi-band communication system provided by another embodiment of the present application;

[0044] Figure 6 is a schematic diagram of the architecture of a multi-band communication system provided by another embodiment of the present application;

[0045] Figure 7 is a schematic diagram of the architecture of a multi-band communication system provided by another embodiment of the present application;

[0046] Figure 8 is a schematic diagram of the architecture of a multi-band communication system provided by another embodiment of the present application; DETAILED DESCRIPTION

[0047] In order to enable persons skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by persons skilled in the art without creative work should fall within the protection scope of the present application.

[0048] The terms "include", "comprise" and other any variants thereof in the specification and claims of the present application and the above-described drawings mean "including but not limited to", and are intended to cover non-exclusive inclusion, and are not limited to the examples listed in the text. In addition, the terms "first" and "second" and the like are used to distinguish different objects, rather than to describe a specific order.

[0049] In the present application, each embodiment can focus on the difference from other embodiments, and the same or similar parts between the embodiments can be referred to each other. For the method, product and the like disclosed by the embodiments, if it corresponds to the method part disclosed by the embodiments, the relevant part can be referred to the description of the method part.

[0050] At present, only a few works are involved in the design of dual-band ferrite circulator, which utilizes the fact that ferrite disc can generate multiple resonance modes at different frequency points under certain conditions, so as to design a dual-band circulator. However, this method has certain defects: 1. The working frequency point is limited by the resonance frequency point of the ferrite disc, and flexible design of the working frequency point cannot be achieved; 2. The frequencies of different resonance modes are relatively large, and only specific resonance frequency points can make the circulator work normally; 3. The design is complicated, and it is necessary to simulate the resonance frequency point of the ferrite disc separately first, and then debug in the circulator.

[0051] The application ingeniously combines the design of a circulator and a transmission line, connects two junction circulator structures operating independently in two different frequency bands in parallel through a metal via, and makes the circulator have the performance of a double operating frequency band. The double frequency band ferrite circulator and isolator have a compact overall structure, can provide high isolation and low insertion loss in two operating frequency bands, and have a broad application prospect in radar, communication and other systems. There are many previous works on improving the ferrite circulator by optimizing the design of the transmission line structure. However, a ferrite circulator with a double operating frequency band and a freely designed operating frequency band has not yet appeared, so the application is highly innovative.

[0052] On this basis, a multi-band communication system can be designed based on the ferrite circulator with a double operating frequency band, so as to meet the needs of different communication scenarios.

[0053] In order to make the purpose, technical solutions and advantages of the application clearer, specific embodiments will be described below with reference to the drawings.

[0054] First, the structure of the ferrite circulator with a double operating frequency band and its working principle are introduced. The double parallel microstrip line 2 connects the upper circulator center junction 3 and the lower circulator center junction 10 in parallel through three metal via columns 4, so as to ensure that the upper circulator center junction 3 and the lower circulator center junction 10 can work simultaneously and transmit signals.

[0055] The microstrip interface 1 is a 50-ohm standard microstrip interface, which is connected with the double parallel microstrip line 2 to realize impedance matching.

[0056] One of the two microstrip transmission line branches of the double parallel microstrip line 2 is connected with the upper circulator center junction 3, and the other is connected with the metal via 4.

[0057] In a possible implementation manner, the line widths of the two branches are different. Alternatively, the line widths of the two branches are designed according to the operating frequency of the circulator.

[0058] The upper ferrite disc 5 is embedded in the upper dielectric substrate 6, and the lower ferrite disc 8 is embedded in the lower dielectric substrate 9.

[0059] The ground metal plane 7 is arranged between the upper dielectric substrate 6 and the lower dielectric substrate 9, and the upper ferrite disc 5 and the lower ferrite disc 8 are separated by the ground metal plane 7, so as to ensure that the two operating frequency bands are isolated, work simultaneously and do not affect each other.

[0060] The radii of the upper circulator center junction 3 and the lower circulator center junction 10 are different, and the radii of the upper ferrite disc 5 and the lower ferrite disc 8 are different. Through the differential design of the circulator center junction and the upper ferrite disc, the demand of two different operating frequency bands is met.

[0061] In the specific working process, after the signal is input from any 50-ohm microstrip port 1, it is subjected to magnetic coupling of two different frequencies at the double-parallel microstrip line 2, thereby generating two corresponding ring-shaped transmission paths, respectively flowing to the upper-layer circulator center junction 3 and the lower-layer circulator center junction 10 connected by the metal via pillar 4. The two signals of different frequencies will be coupled at the intersection of the next double-parallel microstrip line 2 branch in the counterclockwise or clockwise direction, leading to the next 50-ohm microstrip port 1 in the counterclockwise or clockwise direction, while the signals in the opposite direction will be isolated.

[0062] In specific embodiments, according to different setting modes of the upper ferrite disc 5 and the lower ferrite disc 8, the signal transmission direction in the ferrite circulator with double operating frequency bands is as shown in Figure 2 and Figure 3 .

[0063] Among them, Figure 2 corresponding to the case where the polarity directions of the upper ferrite disc 5 and the lower ferrite disc 8 are the same (i.e., the polarities of the upper ferrite disc 5 and the lower ferrite disc 8 close to the ground metal plane 7 are opposite).

[0064] As shown in Figure 2 , the center frequency of the operating frequency band corresponding to the upper ferrite disc 5 is , and the signal transmission direction is determined to be counterclockwise based on the right-hand spiral rule, i.e., the signal received by the first sub-interface (Port1 in Figure 2 ) of the microstrip interface 1 is output by the second sub-interface (Port2 in Figure 2 ), and the signal received by the second sub-interface (Port2 in Figure 2 ) is output by the third sub-interface (Port3 in Figure 2 ).

[0065] Similarly, the center frequency of the operating frequency band corresponding to the lower ferrite disc 8 is , and the signal transmission direction is determined to be counterclockwise based on the right-hand spiral rule, and the signal transmission process is consistent with that of the upper ferrite disc 5.

[0066] Figure 2 According to an embodiment, by simultaneously adjusting the polarity directions of the upper ferrite disc 5 and the lower ferrite disc 8, the signal transmission direction of the upper ferrite disc 5 and the lower ferrite disc 8 can be determined to be clockwise based on the right-hand spiral rule in other embodiments.

[0067] Among them, Figure 3 corresponding to the case where the polarity directions of the upper ferrite disc 5 and the lower ferrite disc 8 are opposite (i.e., the polarities of the upper ferrite disc 5 and the lower ferrite disc 8 close to the ground metal plane 7 are the same).

[0068] As shown in Figure 3 , the working frequency band center frequency corresponding to the upper ferrite disc 5 is , based on the right-hand screw rule, the signal transmission direction is counterclockwise, that is, the signal received by the first sub-interface (Port1) of the microstrip interface 1 is output by the second sub-interface (Port2), and the signal received by the second sub-interface (Port2) is output by the third sub-interface (Port3). Figure 2 Figure 2 Figure 2 Figure 2

[0069] The working frequency band center frequency corresponding to the lower ferrite disc 8 is , based on the right-hand screw rule, the signal transmission direction is clockwise, and the signal transmission process is opposite to that of the upper ferrite disc 5. That is, the signal received by the first sub-interface (Port1) of the microstrip interface 1 is output by the third sub-interface (Port3), and the signal received by the third sub-interface (Port3) is output by the second sub-interface (Port2). Figure 2 Figure 2 Figure 2 Figure 2

[0070] Based on the signal transmission directions shown in Figure 2 and Figure 3 , it can be understood that in the specific application process of the ferrite circulator, the ferrite circulator is selected according to the receiver, transmitter and communication equipment in the communication system to meet different communication needs. The following describes the composition of different multi-band communication systems.

[0071] In each multi-band communication system, the multi-band communication system at least includes: an antenna, a first ferrite circulator with a double working frequency band, a first communication equipment and a second communication equipment.

[0072] Among them, the first ferrite circulator is specifically as described in the foregoing embodiments. The microstrip interface includes sub-interfaces connected to the antenna, the first communication equipment and the second communication equipment respectively.

[0073] Among them, the antenna is responsible for signal transmission and reception, and the first communication equipment and the second communication equipment are receivers, transmitters or communication equipment with signal transmission and reception functions. When the first communication equipment and the second communication equipment are communication equipment with signal transmission and reception functions, the specific equipment types are mobile communication equipment such as mobile phones, radar, etc.

[0074] In different embodiments, the combination of the first communication equipment and the second communication equipment is different, which can be roughly divided into the following two categories:

[0075] ​​​​​​​​The first type of combination of communication devices, the first communication device and the second communication device correspond to double working frequency bands, and the double working frequency bands are the same as the working frequency bands of the first ferrite circulator.

[0076] The second type of combination of communication devices, the first communication device and the second communication device correspond to different working frequency bands.

[0077] In the embodiment, the microstrip interface includes sub-interfaces connected with the antenna, the first communication device and the second communication device respectively, realizing signal transmission of the two communication devices based on the shared antenna and being able to meet the communication demand of different communication scenarios. The communication scenarios are roughly divided into: the first communication device and the second communication device correspond to double working frequency bands, and the double working frequency bands are the same as the working frequency bands of the first ferrite circulator; or, the first communication device and the second communication device correspond to different working frequency bands. The communication system is based on the first ferrite circulator with double working frequency bands, realizing multiple multi-band communication scenarios, and also being able to guarantee high isolation between signals of different frequency bands. Because the communication system can communicate on different frequency bands, the problem of frequency band congestion is avoided, and the stability and reliability of communication are also improved. In addition, because the signals of different frequency bands have high isolation, the interference between signals can be effectively reduced, and the communication quality is improved.

[0078] In a possible implementation, when the first communication device and the second communication device correspond to double working frequency bands, the first communication device and the second communication device are a double-frequency receiver and a double-frequency transmitter respectively.

[0079] The polarities of the upper ferrite disc and the lower ferrite disc in the first ferrite circulator are opposite to each other near the ground metal plane.

[0080] As shown in Figure 4 , the form of the first ferrite circulator in the multi-band communication system is as shown in Figure 2 , the signal transmission directions of the upper and lower ferrite discs are both counterclockwise, guaranteeing that the same interface can realize input and output of two different frequency signals at the same time, so as to meet the communication demand of the double working frequency bands of the first communication device and the second communication device. The center frequencies of the two working frequency bands are and respectively.

[0081] Specifically, as shown in Figure 4 , the first sub-interface (Port1 in Figure 4 ) of the microstrip interface is connected with the antenna, and the signal transmission directions are both counterclockwise, so that the signals received by the antenna are transmitted to the double-frequency receiver by the second sub-interface (Port2 in Figure 4 ). The double-frequency transmitter is connected with the third sub-interface (Port3 in Figure 4(Port3), the signal transmitted by the dual-frequency transmitter is emitted from the antenna connected to the first sub-interface.

[0082] In practical implementation, the dual-frequency receiver and dual-frequency transmitter are sub-modules of a communication device, and the first ferrite circulator is also a sub-module within the same communication device. Examples of such communication devices include handheld radios, vehicle-mounted radios, multi-frequency mobile phones, and walkie-talkies.

[0083] In one possible implementation, when the first communication device and the second communication device operate at different frequency bands, both the first communication device and the second communication device are transmitters, both are receivers, or both are full-duplex communication devices.

[0084] In the first ferrite circulator, the upper and lower ferrite discs have the same polarity near the grounded metal plane.

[0085] like Figure 5 As shown, the first ferrite circulator in the multi-band communication system takes the form of... Figure 3 The upper and lower ferrite discs correspond to counterclockwise and clockwise signal transmission directions, respectively, ensuring that the antenna receives frequencies at the following frequencies: and When receiving signals, the antenna can transmit them to the receiving device according to the corresponding frequency, or ensure that the antenna receives frequencies from different communication devices respectively. and The signal is transmitted.

[0086] Specifically, such as Figure 5 The first sub-interface of the microstrip interface ( Figure 5 Connect the antenna to Port 1, and connect the transmitter to the second sub-interface (Port 1). Figure 5 (Port2), corresponding to the frequency of the signal. The corresponding signal transmission direction is clockwise. The signal emitted by transmitter 1 is transmitted through the antenna connected to the first sub-interface. Transmitter 2 is connected to the third sub-interface (…). Figure 5 (Port3), corresponding to the frequency of the signal. The corresponding signal transmission direction is counterclockwise, and the signal emitted by transmitter 2 is also transmitted by the antenna connected to the first sub-interface.

[0087] Figure 5 As shown in the example where both the first and second communication devices are transmitters, in other embodiments, such as Figure 6 As shown, when both the first and second communication devices are receivers, the frequencies of the signals corresponding to receiver 1 and receiver 2 are respectively... and The antenna receives a frequency of At that time, the signal is transmitted counterclockwise to receiver 1 connected to the second sub-interface, and the antenna receives the frequency at [frequency value missing]. clockwise to the third sub-interface connected receiver 2.

[0088] The above, Figure 5 and Figure 6 The first communication device and the second communication device are exemplified as independent receivers and transmitters. In the specific implementation process, the communication device usually has the function of signal transceiving. When the first communication device and the second communication device are duplex communication devices, a multi-band communication system can also be constructed with the first ferrite circulator with double working frequency bands. In this process, in order to ensure that the transceiving functions of the duplex communication device are normally operated, it is necessary to further connect the ferrite circulator with double working frequency bands.

[0089] In a possible implementation, when the first communication device and the second communication device correspond to different working frequency bands, and the first communication device and the second communication device are both duplex communication devices, the multi-band communication system further comprises:

[0090] The second ferrite circulator and the third ferrite circulator with double working frequency bands;

[0091] The microstrip interface of the second ferrite circulator is connected to one sub-microstrip interface of the first ferrite circulator, the transmitter of the first communication device and the receiver of the first communication device respectively;

[0092] The microstrip interface of the third ferrite circulator is connected to another sub-microstrip interface of the first ferrite circulator, the transmitter of the second communication device and the receiver of the second communication device respectively;

[0093] In the second ferrite circulator and the third ferrite circulator, the polarities of the upper ferrite disc and the lower ferrite disc close to the ground metal plane are opposite.

[0094] As Figure 7 shown, the form of the first ferrite circulator H1 in the multi-band communication system is as Figure 3 The signal transmission directions of the upper and lower ferrite discs correspondingly are counterclockwise and clockwise respectively, so that when the antenna receives signals with frequencies of and , the corresponding devices can be transmitted and received according to the frequency, or the antenna can receive signals with frequencies of and from different communication devices and transmit them.

[0095] As Figure 7As shown, the first communication device and the second communication device are both duplex communication devices, each having a receiver and a transmitter, and the second ferrite circulator H2 is connected with the first ferrite circulator H1 corresponding to the first communication device, and the third ferrite circulator H3 is connected with the first ferrite circulator H1 corresponding to the second communication device, so as to meet the signal transceiving work requirements of the first communication device and the second communication device through the cooperation of the first ferrite circulator H1, the second ferrite circulator H2 and the third ferrite circulator H3. The third ferrite circulator H3 is in the form of Figure 2 As shown, the signal transmission directions of the upper and lower ferrite discs are the same, both being counterclockwise. The signal transmission directions of the upper and lower ferrite discs in the second ferrite circulator H2 are also the same, which are different from Figure 2 As shown, the signal transmission directions are both clockwise.

[0096] Although the signal transmission directions of the second ferrite circulator H2 and the third ferrite circulator H3 are different, both of them meet the requirement that the polarities of the upper ferrite disc and the lower ferrite disc close to the ground metal plane are opposite.

[0097] As shown Figure 7 , the frequencies of the signals corresponding to the transmitter 1 and the receiver 1 of the first communication device are different, and the frequencies of the signals corresponding to the transmitter 2 and the receiver 2 of the second communication device are also different. Among them, the frequencies of the signals corresponding to the transmitter 1 of the first communication device and the receiver 2 of the second communication device are the same, that is , and the frequencies of the signals corresponding to the receiver 1 of the first communication device and the transmitter 2 of the second communication device are the same, that is .

[0098] As shown Figure 4 , Figure 5 , Figure 6 and Figure 7 , the architecture schematic diagram of the multi-band communication system is exemplarily shown. In other embodiments, the multi-band communication system can include one transmitter and one duplex communication device, or one receiver and one duplex communication device.

[0099] Exemplarily, when the multi-band communication system can include one transmitter and one duplex communication device, as shown in Figure 5 and Figure 7 , the microstrip interface first sub-interface of the first ferrite circulator H1 is connected with an antenna, the duplex communication device is connected with the microstrip interface second sub-interface (such as Port2 as shown in Figure 7 ) of the first ferrite circulator H1 through the second ferrite circulator H2, and the transmitter is directly connected with the microstrip interface third sub-interface (such as Port3 as shown in Figure 7 ) of the first ferrite circulator H1, and the frequency of the signal corresponding to the transmitter is When the frequency of the signal corresponding to the receiver is , the receiver and the duplex communication device are interchanged in position and are connected to the second sub-interface and the third sub-interface of the microstrip interface of the first ferrite circulator H1 respectively.

[0100] For example, when the multi-band communication system can include one receiver and one duplex communication device, as shown in Figure 5 and Figure 7 , the first sub-interface of the microstrip interface of the first ferrite circulator H1 is connected to the antenna, the duplex communication device is connected to the second sub-interface (as shown in Figure 7 Port2) of the microstrip interface of the first ferrite circulator H1 through the second ferrite circulator H2, and the receiver is directly connected to the third sub-interface (as shown in Figure 7 Port3) of the microstrip interface of the first ferrite circulator H1, and the frequency of the signal corresponding to the receiver is When the frequency of the signal corresponding to the receiver is , the receiver and the duplex communication device are interchanged in position and are connected to the second sub-interface and the third sub-interface of the microstrip interface of the first ferrite circulator H1 respectively.

[0101] Figure 8 is a flowchart of a multi-band communication system construction method provided by an embodiment of the present application, as shown in Figure 8 , the method includes the following steps:

[0102] S801, obtaining communication device type information in a multi-band communication system; wherein the communication device type information includes: the first communication device and the second communication device both correspond to a duplex working frequency band, and the duplex working frequency band is the same as the working frequency band of the first ferrite circulator; or the working frequency bands corresponding to the first communication device and the second communication device are different.

[0103] The execution subject of each embodiment of the present application can be a server, a processor, a microprocessor or other devices with data processing function. In the actual implementation process, the specific implementation mode of the execution subject can be selected according to actual needs, and the present embodiment does not make special limitation as long as it is a device with data processing function. For the convenience of understanding, the present embodiment is described by taking a controller as an example. The multi-band communication system construction method can realize the simulation design of the controller on the multi-band communication system and provide a reference basis for the selection of the ferrite circulator.

[0104] The communication device type information can be input by a user according to needs, or can be obtained according to the parameter information of the device. The communication device type information can be directly determined according to the parameter information of the device or the corresponding parameter information can be queried according to the identification information of the device.

[0105] S802, determine the target type of the first ferrite circulator with dual operating frequency bands according to the communication device type information.

[0106] In the implementation process, as described in the foregoing embodiments, Figure 2 and Figure 3 It can be seen that the target type of the first ferrite circulator corresponds to the information of the signal transmission direction, such as clockwise or counterclockwise.

[0107] Optionally, the target type information of the first ferrite circulator is preset in the controller, and the target type information is roughly divided into three categories: the signal transmission direction is clockwise, the signal transmission direction is counterclockwise, or the signal transmission direction includes clockwise and counterclockwise.

[0108] Among them, by classifying the type of the first ferrite circulator, the target type of the first ferrite circulator can be quickly determined, the simulation efficiency is improved, and a reference basis for fast and efficient selection of ferrite circulators is provided.

[0109] S803, connect the first ferrite circulator corresponding to the target type, the communication device, and the antenna.

[0110] After determining the target type of the first ferrite circulator, that is, determining the signal transmission direction, the overall architecture of the multi-band communication system is determined according to the communication requirements of the communication device.

[0111] In this embodiment, the target type of the first ferrite circulator with dual operating frequency bands is determined according to the communication device type information, and the first ferrite circulator corresponding to the target type, the communication device, and the antenna are connected, which can realize the simulation design of the multi-band communication system architecture. Not only optimizes the configuration of the communication device, but also ensures the stability and efficiency of the system under different frequency bands, ensures that the performance of the communication device under different frequency bands can meet the expected standard, thereby improving the reliability and communication quality of the entire multi-band communication system.

[0112] In the process of building a multi-band communication system, the architecture of the multi-band communication system is as shown in the foregoing system embodiments, Figure 4 , Figure 5 , Figure 6 and Figure 7

[0113] In one possible implementation, when the communication device type information includes a first communication device and a second communication device corresponding to dual operating frequency bands, or the first communication device and the second communication device are a dual-frequency receiver and a dual-frequency transmitter respectively, the target type of the first ferrite circulator is determined as:

[0114] In the first ferrite circulator, the polarities of the upper ferrite disc and the lower ferrite disc close to the ground metal plane are opposite. ​

[0115] In the embodiment, the communication device type information is mainly for Figure 4 corresponding to the communication scenario shown in Figure 2 .

[0116] In a possible implementation, connecting the target type corresponding first ferrite circulator, communication device and antenna, comprising:

[0117] The microstrip interface of the first ferrite circulator is connected to the antenna, the first communication device and the second communication device respectively.

[0118] Wherein, since the first communication device and the second communication device are double-frequency receiver and double-frequency transmitter respectively, the connection position of the first communication device and the second communication device needs to be considered. As shown in Figure 4 , when the signal transmission direction of the first ferrite circulator is counterclockwise, the microstrip interface of the first ferrite circulator is connected to the double-frequency transmitter, the antenna and the double-frequency receiver in turn counterclockwise. On the contrary, when the signal transmission direction of the first ferrite circulator is clockwise, the microstrip interface of the first ferrite circulator is connected to the double-frequency receiver, the antenna and the double-frequency transmitter in turn clockwise.

[0119] In a possible implementation, when the communication device type information includes: the working frequency bands of the first communication device and the second communication device are different, or the first communication device and the second communication device are both transmitters, both receivers or both duplex communication devices, the target type of the first ferrite circulator is determined as:

[0120] In the first ferrite circulator, the polarities of the upper ferrite disc and the lower ferrite disc close to the ground metal plane are the same.

[0121] In the embodiment, the communication device type information is mainly for Figure 5 and Figure 6 corresponding to the communication scenario shown in Figure 3 .

[0122] In a possible implementation, connecting the target type corresponding first ferrite circulator, communication device and antenna, comprising:

[0123] When the first communication device and the second communication device are both transmitters or both receivers, the microstrip interface of the first ferrite circulator is connected to the antenna, the first communication device and the second communication device respectively.

[0124] In the embodiment, when the first communication device and the second communication device are both transmitters or both receivers, only signal transmission or signal reception is performed, therefore, as shown in Figure 5 and Figure 6As shown, the communication device and the first ferrite circulator do not need to be additionally connected with a ferrite circulator.

[0125] In a possible implementation, when the first communication device and the second communication device are both duplex communication devices, the method further includes:

[0126] determining a target type of the second ferrite circulator and the third ferrite circulator with a duplex frequency band; wherein the polarities of the upper ferrite disc and the lower ferrite disc of the second ferrite circulator and the third ferrite circulator are opposite to each other near the ground metal plane;

[0127] Correspondingly, connecting the first ferrite circulator, the communication device and the antenna corresponding to the target type includes:

[0128] the microstrip interface of the second ferrite circulator is connected with one sub-microstrip interface of the first ferrite circulator, the transmitter of the first communication device and the receiver of the first communication device respectively;

[0129] the microstrip interface of the third ferrite circulator is connected with another sub-microstrip interface of the first ferrite circulator, the transmitter of the second communication device and the receiver of the second communication device respectively.

[0130] In the embodiment, when the first communication device and the second communication device are both duplex communication devices, the communication device needs to perform signal transmission and signal reception, and therefore, as shown, Figure 7 the communication device and the first ferrite circulator need to be additionally connected with a ferrite circulator.

[0131] When the first communication device and the second communication device are both duplex communication devices, the working frequency band of the transmitter of the first communication device is the same as the working frequency band of the receiver of the second communication device; and the working frequency band of the receiver of the first communication device is the same as the working frequency band of the transmitter of the second communication device.

[0132] The above embodiments are only used to illustrate the technical solutions of the present application, rather than limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement to some technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A multi-band communication system, characterized by, The application relates to a multi-band communication system, comprising: an antenna, a first ferrite circulator with double working frequency bands, a first communication device and a second communication device; wherein the first ferrite circulator comprises a microstrip interface, double-parallel microstrip lines, an upper circulator center junction, metal via columns, an upper ferrite disc, an upper dielectric substrate, a ground metal plane, a lower ferrite disc, a lower dielectric substrate and a lower circulator center junction; wherein the double-parallel microstrip lines have different microstrip line widths in two branches, and the microstrip line widths in the two branches are designed according to the working frequency of the circulator; the microstrip interface comprises a first sub-interface, a second sub-interface and a third sub-interface; the double-parallel microstrip lines are connected in parallel through the three metal via columns; the upper ferrite disc is embedded in the upper dielectric substrate; the lower ferrite disc is embedded in the lower dielectric substrate; the ground metal plane is arranged between the upper dielectric substrate and the lower dielectric substrate, and the upper ferrite disc and the lower ferrite disc are separated by the ground metal plane; the upper circulator center junction and the lower circulator center junction have different radii; the upper ferrite disc and the lower ferrite disc have different radii; the microstrip interface comprises sub-interfaces connected with the antenna, the first communication device and the second communication device respectively; the first communication device and the second communication device correspond to double working frequency bands, and the double working frequency bands are the same as the working frequency bands of the first ferrite circulator; or the working frequency bands corresponding to the first communication device and the second communication device are different; wherein the target selection of the first ferrite circulator with double working frequency bands is determined according to the communication device type information; the target selection includes two types that the polarities of the upper ferrite disc and the lower ferrite disc close to the ground metal plane are opposite and the same.

2. The multi-band communication system of claim 1, wherein, when the first communication device and the second communication device correspond to double working frequency bands, the first communication device and the second communication device are a double-frequency receiver and a double-frequency transmitter respectively; the polarities of the upper ferrite disc and the lower ferrite disc close to the ground metal plane in the first ferrite circulator are opposite.

3. The multi-band communication system of claim 1, wherein, when the working frequency bands corresponding to the first communication device and the second communication device are different, the first communication device and the second communication device are a transmitter, a receiver or a duplex communication device; in the first ferrite circulator, the polarities of the upper ferrite disc and the lower ferrite disc close to the ground metal plane are the same.

4. The multi-band communication system of claim 3, wherein, when the working frequency bands corresponding to the first communication device and the second communication device are different, and the first communication device and the second communication device are duplex communication devices, the multi-band communication system further comprises: a second ferrite circulator and a third ferrite circulator with double working frequency bands; the microstrip interface of the second ferrite circulator is connected with one sub-microstrip interface of the first ferrite circulator, a transmitter of the first communication device and a receiver of the first communication device respectively; The microstrip interfaces of the third ferrite circulator are connected to the other sub-microstrip interface of the first ferrite circulator, the transmitter of the second communication device and the receiver of the second communication device, respectively; In the second ferrite circulator and the third ferrite circulator, the polarities of the upper ferrite disc and the lower ferrite disc close to the ground metal plane are opposite.

5. A method of constructing a multi-band communication system for use in a multi-band communication system as claimed in any one of claims 1 to 4, characterized by Comprise: Obtaining communication device type information in a multi-band communication system; According to the communication device type information, determining a target type of a first ferrite circulator with double operating frequency bands; Connecting the first ferrite circulator, the communication device and the antenna corresponding to the target type; Wherein, the communication device type information includes: the first communication device and the second communication device correspond to double operating frequency bands, and the double operating frequency bands are the same as the operating frequency bands of the first ferrite circulator; or the operating frequency bands corresponding to the first communication device and the second communication device are different; the target type includes that the polarities of the upper ferrite disc and the lower ferrite disc close to the ground metal plane in the first ferrite circulator are opposite or the same; Wherein, when the communication device type information includes that the first communication device and the second communication device correspond to double operating frequency bands, or the first communication device and the second communication device are double-frequency receivers and double-frequency transmitters respectively, the target type of the first ferrite circulator is determined as: in the first ferrite circulator, the polarities of the upper ferrite disc and the lower ferrite disc close to the ground metal plane are opposite; When the communication device type information includes that the operating frequency bands corresponding to the first communication device and the second communication device are different, or the first communication device and the second communication device are transmitters, receivers or duplex communication devices, the target type of the first ferrite circulator is determined as: in the first ferrite circulator, the polarities of the upper ferrite disc and the lower ferrite disc close to the ground metal plane are the same; Correspondingly, the connection of the first ferrite circulator, the communication device and the antenna corresponding to the target type includes: Corresponding to opposite polarities, the microstrip interfaces of the first ferrite circulator are connected to the antenna, the first communication device and the second communication device, respectively; Corresponding to the same polarity, the microstrip interfaces of the first ferrite circulator are connected to the antenna, the first communication device and the second communication device, respectively.

6. The method of claim 5, wherein, When the first communication device and the second communication device are both duplex communication devices, further comprising: Determining the target type of a second ferrite circulator and a third ferrite circulator with double operating frequency bands; wherein, in the second ferrite circulator and the third ferrite circulator, the polarities of the upper ferrite disc and the lower ferrite disc close to the ground metal plane are opposite; Correspondingly, the connection of the first ferrite circulator, the communication device and the antenna corresponding to the target type includes; The microstrip interfaces of the second ferrite circulator are connected to one sub-microstrip interface of the first ferrite circulator, the transmitter of the first communication device and the receiver of the first communication device, respectively; The microstrip interface of the third ferrite circulator is connected to the other sub-microstrip interface of the first ferrite circulator, the transmitter of the second communication device and the receiver of the second communication device, respectively.

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