A communication device
By combining filters and coupling control units or common resonant cavities in the design of communication devices, the insertion loss problem introduced by reconfigurable cross-couplers on the RF channel is solved, enabling switching between power splitting and cut-through states, reducing base station power consumption and improving signal output flexibility.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- HUAWEI TECH CO LTD
- Filing Date
- 2022-02-28
- Publication Date
- 2026-05-12
AI Technical Summary
When reconfigurable cross-couplers are applied to the radio frequency channel, insertion loss has a significant impact on system performance, and existing technologies struggle to reduce power consumption while ensuring base station performance.
A reconfigurable cross-connect network is achieved by using a joint filter. The connection or disconnection of the coupling rod is controlled by the coupling control unit, or the resonant frequency of the common resonant cavity is adjusted or the grounding state of the filter's resonant cavity is controlled, so as to realize the switching between the power-sharing state and the direct-through state of the communication device and avoid introducing additional insertion loss.
The communication device enables switching between power-sharing and direct-through states, reducing system insertion loss, decreasing base station power consumption, and improving the flexibility and efficiency of signal output.
Smart Images
Figure CN116706483B_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of wireless communication, and more particularly to a communication device. Background Technology
[0002] To align with the era of green development and enhance the flexibility of signal output states, reconfigurable cross-couplers are applied to the radio frequency (RF) channel. This can reduce RF channel power consumption while maintaining base station performance. Typically, one implementation of a reconfigurable cross-coupler involves using a microstrip line to implement a 90° bridge and adding a reactive element in the middle of the cross-coupler. By changing the reactance value of this reactive element, the reconfigurable cross-coupler can switch between power-sharing and cut-through states. Alternatively, another implementation involves controlling the connection of RF switches to achieve the same switching mechanism.
[0003] However, when such a reconfigurable cross-coupler is used in the radio frequency channel, its insertion loss (hereinafter referred to as insertion loss) has a significant impact on the system performance. Summary of the Invention
[0004] This application provides a communication device that implements a reconfigurable cross-connect network through a joint filter, enabling the communication device to operate in power splitting and cut-through states, thus avoiding the introduction of additional insertion loss due to the cross-connect in the system.
[0005] In a first aspect, this application provides a communication device comprising a first filter, a second filter, and a coupling control unit, wherein: the first filter includes at least one resonant cavity, and a first coupling rod is provided within the first resonant cavity of the first filter; the second filter includes at least one resonant cavity, and a second coupling rod is provided within the first resonant cavity of the second filter; the coupling control unit is located between the first resonant cavity of the first filter and the first resonant cavity of the second filter, the coupling control unit is connected to the first coupling rod, and the coupling control unit is connected to the second coupling rod; the first filter and the second filter are used to filter radio frequency signals; the coupling control unit is used to control the connection or disconnection between the first coupling rod and the second coupling rod; if the first coupling rod and the second coupling rod are connected, the communication device operates in a power-dividing state; if the first coupling rod and the second coupling rod are disconnected, the communication device operates in a direct-through state.
[0006] In conjunction with the first aspect, in one possible implementation, the coupling control unit includes a PIN diode 11, a PIN diode 12, a voltage control pin V1, a voltage control pin V2, a microstrip line 1, and a microstrip line 2, wherein: the voltage control pin V1 is connected to the PIN diode 11; the anode of the PIN diode 11 is connected to the microstrip line 1, and the cathode of the PIN diode 11 is connected to the microstrip line 2; the voltage control pin V2 is connected to the PIN diode 12; the cathode of the PIN diode 12 is connected to the microstrip line 1, and the anode of the PIN diode 12 is connected to the microstrip line 2; the microstrip line 1 is connected to a first coupling rod; and the microstrip line 2 is connected to a second coupling rod.
[0007] In conjunction with the first aspect, in one possible implementation, if voltage control pin V1 provides a forward voltage to PIN diode 11 and voltage control pin V2 provides a forward voltage to PIN diode 12, then PIN diode 11 and PIN diode 12 are turned on, and the first coupling rod and the second coupling rod are connected; if voltage control pin V1 provides a reverse voltage to PIN diode 11 and voltage control pin V2 provides a reverse voltage to PIN diode 12, then PIN diode 11 and PIN diode 12 are turned off, and the first coupling rod and the second coupling rod are disconnected.
[0008] In conjunction with the first aspect, in one possible implementation, the coupling control unit includes a power supply component, a switching component, a switching control component, a microstrip line 3, a microstrip line 4, and a load resistor, wherein: the power supply component is connected to the switching component; the switching control component is connected to the switching component; the switching component is connected to microstrip line 3 and microstrip line 4; the load resistor is grounded, and the switching component is also connected to the load resistor; microstrip line 3 is connected to a first coupling rod; and microstrip line 4 is connected to a second coupling rod.
[0009] In conjunction with the first aspect, in one possible implementation, if the switch controller controls the switch assembly to connect microstrip line 3 and microstrip line 4, then the first coupling rod and the second coupling rod are connected; if the switch control assembly controls the switch assembly to connect to the load resistor, then the first coupling rod and the second coupling rod are disconnected.
[0010] Secondly, this application provides a communication device comprising a first filter, a second filter, and a common resonant cavity, wherein: the first filter includes at least one resonant cavity, and the second filter includes at least one resonant cavity; the common resonant cavity is located between the first resonant cavity of the first filter and the first resonant cavity of the second filter, and is connected to the first resonant cavity of the first filter and the first resonant cavity of the second filter; the first filter and the second filter are used to filter radio frequency signals; the common resonant cavity is used to isolate the first filter and the second filter, or to couple the first filter and the second filter; if the first filter and the second filter are isolated, the communication device operates in a direct-through state; if the first filter and the second filter are coupled, the communication device operates in a power-dividing state.
[0011] In conjunction with the second aspect, in one possible implementation, the common resonant cavity also includes a varactor diode, which is used to control the resonant frequency of the common resonant cavity. If the varactor diode controls the resonant frequency of the common resonant cavity to be far from the operating frequency band of the first filter and the second filter, then the first filter and the second filter are isolated from each other. If the varactor diode controls the resonant frequency of the common resonant cavity to be within the operating frequency band of the first filter and the second filter, then the first filter and the second filter are coupled together.
[0012] Thirdly, this application provides a communication device comprising a first filter, a second filter, and a grounding control component, wherein: the first filter includes at least one resonant cavity, and the second filter includes at least one resonant cavity; the grounding control component is connected to the first resonant cavity of the second filter; the first filter and the second filter are used to filter radio frequency signals; the grounding control component is used to control whether the first resonant cavity of the second filter is grounded; if the first resonant cavity of the second filter is not grounded, the communication device operates in a power-sharing state; if the first resonant cavity of the second filter is grounded, the communication device operates in a pass-through state.
[0013] In conjunction with the third aspect, in one possible implementation, the grounding control component is a PIN diode. Attached Figure Description
[0014] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.
[0015] Figure 1 This is a schematic diagram of a communication system provided in an embodiment of this application;
[0016] Figure 2 This is a schematic diagram of the structure of a communication device provided in an embodiment of this application;
[0017] Figure 3 This is a schematic diagram illustrating the connection and disconnection between a first coupling rod and a second coupling rod according to an embodiment of this application;
[0018] Figure 4 This is a schematic diagram of the structure of a coupling control unit provided in an embodiment of this application;
[0019] Figure 5 This is a schematic diagram of the structure of a coupling control unit provided in an embodiment of this application;
[0020] Figure 6 This is a schematic diagram of a switch assembly controlling the on / off state according to an embodiment of this application;
[0021] Figure 7 This is a schematic diagram of another communication device provided in an embodiment of this application;
[0022] Figure 8 This is a schematic diagram showing the positions of a common resonant cavity and a varactor diode provided in an embodiment of this application;
[0023] Figure 9 This is a schematic diagram of the structure of another communication device provided in the embodiments of this application. Detailed Implementation
[0024] The technical solutions in the embodiments of this application will be described in more detail below.
[0025] The terminology used in the following embodiments of this application is for the purpose of describing particular embodiments only and is not intended to be limiting of this application. As used in the specification and appended claims of this application, the singular expressions “a,” “an,” “the,” “the,” “the,” and “this” are intended to include the plural expressions as well, unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used in this application refers to and includes any or all possible combinations of one or more of the listed items. The term “a plurality” as used in this application means two or more.
[0026] It should be noted that the terms "first," "second," "third," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the term "comprising" and any variations thereof are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or server that includes a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to these processes, methods, products, or devices.
[0027] The communication device described in this application can be applied to... Figure 1 The communication system shown, Figure 1 The communication system shown includes a baseband processing unit (BB), a digital intermediate frequency (DIF) processing unit, a filter, and an antenna. The communication apparatus of this application mainly relates to... Figure 1 The filter in the text. In one possible example, Figure 1 The communication system shown is a schematic diagram of the access network equipment.
[0028] It should be noted that the access network equipment involved in this application can be a base station (BS). A base station can provide communication services to multiple terminal devices, and multiple base stations can also provide communication services to the same terminal device. In the embodiments of this application, a base station is a device deployed in a radio access network to provide wireless communication functions for terminal devices. The base station equipment can be a base station, a relay station, or an access point. The base station can be an eNB or eNodeB (Evolutionary NodeB) in Long Term Evolution (LTE). The base station equipment can also be a radio controller in a Cloud Radio Access Network (CRAN) scenario. The base station equipment can also be a base station equipment in a future 6G network or a network equipment in a future evolved PLMN network. The base station equipment can also be a wearable device or an in-vehicle device, etc. In the embodiments of this application, the device used to implement the functions of the network device can be a network device; it can also be a device that can support the network device to implement the functions, such as a chip system, which can be installed in the network device. For example, the network device can be a central unit (CU) or a distributed unit (DU). The CU here performs the functions of the radio resource control protocol and packet data convergence protocol (PDCP) of the base station, and can also perform the functions of the service data adaptation protocol (SDAP); the DU performs the functions of the radio link control layer and medium access control (MAC) layer of the base station, and can also perform some or all of the physical layer functions. For specific descriptions of the above protocol layers, please refer to the relevant technical specifications of the 3rd Generation Partnership Project (3GPP).
[0029] The network architecture and business scenarios described in the embodiments of this application are for the purpose of more clearly illustrating the technical solutions of the embodiments of this application, and do not constitute a limitation on the technical solutions provided in the embodiments of this application. As those skilled in the art will know, with the evolution of network architecture and the emergence of new business scenarios, the technical solutions provided in the embodiments of this application are also applicable to similar technical problems.
[0030] Next, some concepts involved in the embodiments of this application will be introduced.
[0031] 1. Resonant cavity
[0032] A resonant cavity (also called a resonant chamber) is a metallic cavity (or dielectric cavity) used as a resonant circuit in the microwave band, allowing a high-frequency electromagnetic field to oscillate continuously within it. A resonant cavity is a resonant element operating at microwave frequencies. It is an arbitrary-shaped dielectric region surrounded by conductive (or magnetic) walls, capable of generating electromagnetic oscillations within it. It possesses the characteristics of storing electromagnetic energy and selecting signals of specific frequencies. Resonant cavities have wide applications in microwave technology. For example, microwave resonant cavities can be used as frequency-selective elements in microwave frequency multipliers and amplifiers, and can directly form microwave filters for microwave measurement and communication.
[0033] 2. Filter
[0034] A filter is primarily a frequency-selective device that allows specific frequency components of a signal to pass through while significantly attenuating other frequency components. In other words, the filtering process of a filter can be described as: effectively filtering out a specific frequency band or other communication signals from a communication signal to obtain a communication signal within that specific frequency band, or a communication signal after filtering out the specific frequency band.
[0035] 3. Microstrip Line
[0036] Microstrip lines are a routing method for high-speed transmission lines in printed circuit board (PCB) design. A microstrip line is a microwave transmission line consisting of a single conductor strip supported on a dielectric substrate. It is suitable for fabricating planar transmission lines for microwave integrated circuits. Compared to metallic waveguides, microstrip lines offer advantages such as smaller size, lighter weight, wider operating bandwidth, higher reliability, and lower manufacturing cost.
[0037] 4. Reconfigurable cross-coupler
[0038] A reconfigurable cross-coupler is used between two power amplifiers and two filters to achieve two operating states of the communication system's output power: a pass-through state and a power-splitting state. In the pass-through state, the output power of the two amplifiers is fed to the antenna elements through their respective filters. In the power-splitting state, one of the two amplifiers is turned off, and the output power of the other amplifier is split and distributed to the antenna elements corresponding to the two filters.
[0039] 5. Insertion loss (hereinafter referred to as insertion loss)
[0040] Insertion loss refers to the loss of load power at a point in a transmission system due to the insertion of a component or device. It is expressed as the ratio, in decibels (dB), of the power received on the load before the component or device was inserted to the power received on the same load after the insertion.
[0041] In base station module power consumption, the power consumption of the radio frequency (RF) channel (including power amplifier) accounts for the majority. Typically, base station performance can be maintained while reducing power consumption by using a reconfigurable cross-coupler after the power amplifier in the RF channel. However, introducing additional components (i.e., the reconfigurable cross-coupler) into the original RF channel introduces additional insertion loss into the communication system.
[0042] This application implements the function of a reconfigurable cross-coupler by combining the original components in the RF channel design, enabling the communication system to switch between power splitting and pass-through states, thereby avoiding the introduction of additional components (i.e., reconfigurable cross-couplers) and the problem of introducing additional insertion loss.
[0043] Please see Figure 2 As shown, Figure 2 This is a schematic diagram of the structure of a communication device provided in an embodiment of this application. Figure 2 The communication device shown can be applied to Figure 1 In the communication system shown, for example, the communication device can be... Figure 1 The communication device includes a first filter, a second filter, and a coupling control unit. Specifically, the first filter includes at least one resonant cavity, and a first coupling rod is located within the first resonant cavity of the first filter. The second filter includes at least one resonant cavity, and a second coupling rod is located within the first resonant cavity of the second filter. The coupling control unit is located between the first resonant cavity of the first filter and the first resonant cavity of the second filter. The coupling control unit is connected to the first coupling rod and is also connected to the second coupling rod. Wherein:
[0044] The first filter and the second filter are used to filter the radio frequency (RF) signal. Each of the first and second filters corresponds to a different RF channel. For example, the first power amplifier, the first filter, and the first antenna element form RF channel 1; the second power amplifier, the second filter, and the second antenna element form RF channel 2.
[0045] It should be noted that, in Figure 2 The example provided is a filter consisting of five resonant cavities for both the first and second filters, and should not be considered as a specific limitation of this application.
[0046] The coupling control unit controls the connection or disconnection between the first coupling rod and the second coupling rod. If the first and second coupling rods are connected, the communication device operates in a power-sharing state; if the first and second coupling rods are disconnected, the communication device operates in a direct-through state. For illustrative purposes, please refer to [link to illustrative example]. Figure 3 As shown, Figure 3This is a schematic diagram showing the connection and disconnection between the first and second coupling rods. When the coupling control unit controls the connection between the first and second coupling rods, as shown... Figure 3 As shown in module 3a, a path is formed between the first coupling rod and the second coupling rod, and the communication device operates in a power-dividing state. When the coupling control unit controls the first coupling rod and the second coupling rod to disconnect, as shown in module 3a, the communication device operates in a power-dividing state. Figure 3 As shown in module 3b, the first coupling rod and the second coupling rod are disconnected, and the communication device operates in a straight-through state.
[0047] In other words, in one application scenario: the first power amplifier, the first filter, and the first antenna element constitute RF channel 1; the second power amplifier, the second filter, and the second antenna element constitute RF channel 2. In this scenario, such as... Figure 3 As shown in module 3a, when the coupling control unit controls the first coupling rod and the second coupling rod to connect, RF channel 1 and RF channel 2 are relatively independent. That is, signal 1 output by the first power amplifier is transmitted through RF channel 1, and signal 2 output by the second power amplifier is transmitted through RF channel 2. In this scenario, as... Figure 3 As shown in module 3b, when the coupling control unit controls the first coupling rod and the second coupling rod to disconnect, the radio frequency channel between the second power amplifier and the second filter is turned off. The power of signal 1 output by the first power amplifier is not only fed to the first antenna vibrator through the first filter for transmission, but also coupled to the second filter for transmission to the second antenna vibrator.
[0048] In summary, by setting a first coupling rod and a second coupling rod in the first resonant cavity of the first filter and the first resonant cavity of the second filter respectively, and controlling the on / off state between the first coupling rod and the second coupling rod by the coupling control unit, the first filter and the second filter can achieve cross-connection function (i.e., the communication device works in a through state or a power split state) while realizing the filtering function, avoiding the introduction of reconfigurable cross-couplers into the communication system and reducing system insertion loss.
[0049] Combination Figure 2 The provided communication device, specifically the coupling control unit, can be mounted on a PCB board, or it can be designed on the same PCB board as the reverse coupling unit and the bias-T surge protection circuit. In one possible implementation, a schematic diagram of the coupling control unit is shown below. Figure 4As shown, the coupling control unit includes PIN diode 11, PIN diode 12, voltage control pin V1, voltage control pin V2, microstrip line 1, and microstrip line 2. Specifically, voltage control pin V1 is connected to PIN diode 11; the anode of PIN diode 11 is connected to microstrip line 1, and the cathode of PIN diode 11 is connected to microstrip line 2; voltage control pin V2 is connected to PIN diode 12; the cathode of PIN diode 12 is connected to microstrip line 1, and the anode of PIN diode 12 is connected to microstrip line 2; microstrip line 1 is connected to a first coupling rod; and microstrip line 2 is connected to a second coupling rod.
[0050] In one possible implementation, the first coupling rod is a metal rod, with one end located within the first resonant cavity of the first filter, serving to couple power. The other end of the first coupling rod extends out of the first resonant cavity of the first filter and is soldered onto the PCB board to connect with microstrip line 1. The second coupling rod is also a metal rod, with one end located within the first resonant cavity of the second filter, serving to couple power. The other end of the second coupling rod extends out of the first resonant cavity of the second filter and is soldered onto the PCB board to connect with microstrip line 2. It should be noted that the coupling rods can be fixed using resin supports, and their specific coupling coefficients can be obtained through comprehensive simulation design based on the structure and resin parameters.
[0051] Combination Figure 2 In one embodiment of the communication device shown, if voltage control pin V1 provides a forward voltage to PIN diode 11 and voltage control pin V2 provides a forward voltage to PIN diode 12, then PIN diode 11 and PIN diode 12 are turned on, and the first coupling rod and the second coupling rod are connected; if voltage control pin V1 provides a reverse voltage to PIN diode 11 and voltage control pin V2 provides a reverse voltage to PIN diode 12, then PIN diode 11 and PIN diode 12 are turned off, and the first coupling rod and the second coupling rod are disconnected.
[0052] In other words, Figure 4 The coupling control unit shown controls the connection and disconnection between the first and second coupling rods. Specifically, it controls the connection and disconnection between the first and second coupling rods by providing voltage directions through voltage control pins V1 and V2. If both voltage control pins V1 and V2 provide positive voltage, then the first and second coupling rods are connected. Figure 2 The communication device operates in a power-sharing state; if both voltage control pin V1 and voltage control pin V2 provide reverse voltage, then the first coupling rod and the second coupling rod are disconnected. Figure 2 The communication device is in a direct-access state.
[0053] Combination Figure 2The provided communication device, specifically the coupling control unit, can be mounted on a PCB board, or it can be designed on the same PCB board as the reverse coupling unit and the bias-T surge protection circuit. In one possible implementation, a schematic diagram of the coupling control unit is shown below. Figure 5 As shown, the coupling control unit includes a power supply component, a switch component, a switch control component, microstrip line 3, microstrip line 4, and a load resistor. The power supply component is connected to the switch component; the switch control component is connected to the switch component; the switch component is connected to microstrip line 3 and microstrip line 4; the load resistor is grounded, and the switch component is also connected to the load resistor; microstrip line 3 is connected to a first coupling rod; and microstrip line 4 is connected to a second coupling rod.
[0054] In one possible implementation, the first coupling rod is a metal rod, with one end located within the first resonant cavity of the first filter, serving to couple power. The other end of the first coupling rod extends out of the first resonant cavity of the first filter and is soldered to the PCB board and connected to microstrip line 3. The second coupling rod is also a metal rod, with one end located within the first resonant cavity of the second filter, serving to couple power. The other end of the second coupling rod extends out of the first resonant cavity of the second filter and is soldered to the PCB board and connected to microstrip line 4. It should be noted that the coupling rods can be fixed using resin supports, and their specific coupling coefficients can be obtained through comprehensive simulation design based on the structure and resin parameters.
[0055] Combination Figure 2 The communication device shown, in one embodiment, please refer to Figure 6 As shown, Figure 6 This is a schematic diagram illustrating the on / off control of a switching assembly. For example, Figure 6 As shown in module 6a, if the switch controller controls the switch assembly to connect microstrip line 3 and microstrip line 4, then the first coupling rod and the second coupling rod are connected. Figure 2 The communication device is in power-division mode. For example... Figure 6 As shown in module 6b, if the switch control component controls the switch component to connect to the load resistor, then the first coupling rod and the second coupling rod are disconnected. Figure 2 The communication device is in a direct-access state.
[0056] Please see Figure 7 As shown, Figure 7 This is a schematic diagram of another communication device provided in an embodiment of this application. Figure 7 The communication device shown can be applied to Figure 1 In the communication system shown, for example, the communication device can be... Figure 1The communication device includes a first filter, a second filter, and a common resonant cavity. Specifically, the first filter includes at least one resonant cavity, the second filter includes at least one resonant cavity, and the common resonant cavity is located between the first resonant cavity of the first filter and the first resonant cavity of the second filter. The common resonant cavity is connected to the first resonant cavity of the first filter and to the first resonant cavity of the second filter. Wherein:
[0057] The first filter and the second filter are used to filter radio frequency (RF) signals. The first filter and the second filter operate in the same frequency band, and each corresponds to a different RF channel. For example, the first power amplifier, the first filter, and the first antenna element constitute RF channel 1; the second power amplifier, the second filter, and the second antenna element constitute RF channel 2. RF channel 1 and RF channel 2 are two independent channels operating in the same frequency band; that is, signal 1 transmitted by RF channel 1 and signal 2 transmitted by RF channel 2 belong to the same frequency band.
[0058] It should be noted that, in Figure 7 The example provided is a filter consisting of five resonant cavities for both the first and second filters, and should not be considered as a specific limitation of this application.
[0059] A common resonant cavity is used to isolate the first filter and the second filter, or to couple the first filter and the second filter; if the first filter and the second filter are isolated, the communication device operates in a direct-through state; if the first filter and the second filter are coupled, the communication device operates in a power-dividing state.
[0060] Specifically, a first power amplifier, a first filter, and a first antenna element constitute radio frequency channel 1; a second power amplifier, a second filter, and a second antenna element constitute radio frequency channel 2. The resonant frequency of the common resonant cavity is adjustable. When the resonant frequency of the common resonant cavity is adjusted away from the operating frequency band of the first and second filters, the first and second filters are isolated, and radio frequency channel 1 and radio frequency channel 2 are two independent channels, and the communication device operates in a direct-through state. When the resonant frequency of the common resonant cavity is adjusted to the operating frequency band of the first and second filters, the first and second filters are coupled, that is, one radio frequency channel (e.g., radio frequency channel 2) is turned off for energy saving, and the power of the other radio frequency channel (i.e., radio frequency channel 1) is coupled through the common resonant cavity to the filter (i.e., the second filter) of the turned-off radio frequency channel, so that the communication device operates in a power-divided state.
[0061] In summary, by adjusting the resonant frequency of the common resonant cavity, the first and second filters can be isolated (or coupled), enabling them to perform both filtering and cross-connection functions (i.e., the communication device operates in a through-state or power-dividing state). This avoids introducing reconfigurable cross-couplers into the communication system and reduces system insertion loss.
[0062] Combination Figure 7 The provided communication device further includes a varactor diode within the common resonant cavity, which is used to control (or adjust) the resonant frequency of the common resonant cavity. In other words, if the varactor diode controls the resonant frequency of the common resonant cavity to be far from the operating frequency bands of the first and second filters, then the first and second filters are isolated; if the varactor diode controls the resonant frequency of the common resonant cavity to be within the operating frequency bands of the first and second filters, then the first and second filters are coupled.
[0063] Specifically, the schematic diagram showing the locations of the common resonant cavity and the varactor diode is as follows: Figure 8 As shown in module 8a, the varactor diode is located between the outer cavity and the inner cavity of the common resonant cavity. The equivalent circuit diagram of module 8a can be found in [reference needed]. Figure 8 As shown in module 8b, the varactor diode in module 8a is equivalent to the variable capacitor in module 8b, and the equivalent inductance of the common resonant cavity can be seen from the inductance shown in module 8b. From the equivalent circuit diagram shown in module 8b, it can be deduced that the resonant frequency of the common resonant cavity can be controlled (or adjusted) by changing the voltage of the varactor diode. In one possible implementation, if a first voltage is applied to the varactor diode, making its capacitance maximum or minimum, the varactor diode, in conjunction with the cavity (including the inner and outer cavities of the common resonant cavity), can cause the resonant frequency of the common resonant cavity to be far from the operating frequency bands of the first and second filters, thereby achieving isolation between the first and second filters. If a second voltage is applied to the varactor diode, making its capacitance in conjunction with the cavity (including the inner and outer cavities of the common resonant cavity), the resonant frequency of the common resonant cavity can be placed within the operating frequency bands of the first and second filters, thereby achieving coupling between the first and second filters. The specific values of the first and second voltages can be adjusted according to the specific application scenario, and this application does not impose specific limitations on them.
[0064] Please see Figure 9 As shown, Figure 9 This is a schematic diagram of another communication device provided in an embodiment of this application. Figure 9 The communication device shown can be applied to Figure 1 In the communication system shown, for example, the communication device can be... Figure 1The communication device includes a first filter, a second filter, and a grounding control component. Specifically, the first filter includes at least one resonant cavity, the second filter includes at least one resonant cavity, and the grounding control component is connected to the first resonant cavity of the second filter.
[0065] The first and second filters are used to filter radio frequency signals. For a description of the first and second filters, please refer to the foregoing. Figure 7 The descriptions of the first and second filters are repeated here, and will not be repeated here.
[0066] It should be noted that, in Figure 9 The example provided is a filter consisting of three resonant cavities for both the first and second filters, and should not be considered as a specific limitation of this application.
[0067] The grounding control component is used to control whether the first resonant cavity of the second filter is grounded; if the first resonant cavity of the second filter is not grounded, the communication device operates in the power-sharing state; if the first resonant cavity of the second filter is grounded, the communication device operates in the direct-through state.
[0068] In other words, in Figure 9 In this design, the outer cavities of each resonant cavity of the first filter are adjacent to the outer cavities of each resonant cavity of the second filter. A window is opened between the outer cavities of the first resonant cavity of the first filter and the first resonant cavity of the second filter, and a grounding component is provided therein. When the grounding component is grounded, the first resonant cavity of the first filter is isolated from the first resonant cavity of the second filter. This can be understood as the first filter and the second filter being isolated from each other. The RF channel 1 corresponding to the first filter and the RF channel 2 corresponding to the second filter are two independent channels, and the communication device operates in a pass-through state. When the grounding component is not grounded, the first filter and the second filter are coupled together. That is, one RF channel (e.g., RF channel 2 corresponding to the second filter) is turned off for energy saving, and the power of the other RF channel (i.e., RF channel 1 corresponding to the first filter) can couple part of the power to the filter of the turned-off RF channel (i.e., the second filter), so that the communication device operates in a power-divided state.
[0069] In summary, by controlling whether the first resonant cavity of the second filter is grounded, the first and second filters can be isolated (or coupled), enabling the first and second filters to perform filtering functions while also achieving cross-connection functions (i.e., the communication device operates in a through-state or power-dividing state). This avoids the introduction of reconfigurable cross-couplers into the communication system and reduces system insertion loss.
[0070] Combination Figure 9 The provided communication device includes, but is not limited to, a PIN diode as the grounding control component.
[0071] In the above embodiments, implementation can be achieved, in whole or in part, through software, hardware, firmware, or any combination thereof. When implemented in software, it can be implemented, in whole or in part, as a computer program product. This computer program product includes one or more computer instructions. When these computer instructions are loaded and executed on a computer, all or part of the processes or functions described in the embodiments of this application are generated. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions can be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another. For example, the computer instructions can be transmitted from one website, computer, server, or data center to another via wired (e.g., coaxial cable, fiber optic, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) means. The computer-readable storage medium can be any available medium accessible to a computer or a data storage device such as a server or data center that integrates one or more available media. The available media can be magnetic media (e.g., floppy disks, hard disks, magnetic tapes), optical media (e.g., high-density digital video discs (DVDs)), or semiconductor media (e.g., solid-state drives (SSDs)).
[0072] Those skilled in the art will understand that the various numerical designations such as "first" and "second" used in this application are merely for descriptive convenience and are not intended to limit the scope, sequence, or execution order of the embodiments of this application. The execution order of each process should be determined by its function and internal logic.
[0073] Those skilled in the art will recognize that the modules of the various examples described in connection with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.
Claims
1. A communication device, characterized in that, The communication device includes a first filter, a second filter, and a coupling control unit, wherein: The first filter includes at least one resonant cavity, and the first resonant cavity of the first filter has a first coupling rod; the second filter includes at least one resonant cavity, and the first resonant cavity of the second filter has a second coupling rod; the coupling control unit is located between the first resonant cavity of the first filter and the first resonant cavity of the second filter, the coupling control unit is connected to the first coupling rod, and the coupling control unit is connected to the second coupling rod; The first filter and the second filter are used to filter radio frequency signals; The coupling control unit is used to control the connection or disconnection between the first coupling rod and the second coupling rod; if the first coupling rod and the second coupling rod are connected, the communication device is in a power-sharing state; if the first coupling rod and the second coupling rod are disconnected, the communication device is in a direct-connection state.
2. The apparatus according to claim 1, characterized in that, The coupling control unit includes a first PIN diode, a second PIN diode, a first voltage control pin, a second voltage control pin, a first microstrip line, and a second microstrip line, wherein: The first voltage control pin is connected to the first PIN diode; the anode of the first PIN diode is connected to the first microstrip line, and the cathode of the first PIN diode is connected to the second microstrip line; the second voltage control pin is connected to the second PIN diode; the cathode of the second PIN diode is connected to the first microstrip line, and the anode of the second PIN diode is connected to the second microstrip line; the first microstrip line is connected to the first coupling rod; and the second microstrip line is connected to the second coupling rod.
3. The apparatus according to claim 2, characterized in that, If the first voltage control pin provides a positive voltage to the first PIN diode, and the second voltage control pin provides a positive voltage to the second PIN diode, then the first PIN diode and the second PIN diode are turned on, and the first coupling rod and the second coupling rod are connected. If the first voltage control pin provides a reverse voltage to the first PIN diode, and the second voltage control pin provides a reverse voltage to the second PIN diode, then the first PIN diode and the second PIN diode are turned off, and the first coupling rod and the second coupling rod are disconnected.
4. The apparatus according to claim 1, characterized in that, The coupling control unit includes a power supply component, a switching component, a switching control component, a third microstrip line, a fourth microstrip line, and a load resistor, wherein: The power supply component is connected to the switch component; the switch control component is connected to the switch component; the switch component is connected to the third microstrip line and the switch component is connected to the fourth microstrip line; the load resistor is grounded, and the switch component is also connected to the load resistor; the third microstrip line is connected to the first coupling rod; the fourth microstrip line is connected to the second coupling rod.
5. The apparatus according to claim 4, characterized in that, If the switch control component controls the switch assembly to connect the third microstrip line and the fourth microstrip line, then the first coupling rod and the second coupling rod are connected; if the switch control component controls the switch assembly to connect the load resistor, then the first coupling rod and the second coupling rod are disconnected.
6. A communication device, characterized in that, The communication device includes a first filter, a second filter, and a common resonant cavity, wherein: The first filter includes at least one resonant cavity, and the second filter includes at least one resonant cavity; the common resonant cavity is located between the first resonant cavity of the first filter and the first resonant cavity of the second filter, and the common resonant cavity is connected to the first resonant cavity of the first filter and the first resonant cavity of the second filter; The first filter and the second filter are used to filter radio frequency signals; The common resonant cavity is used to isolate the first filter and the second filter, or to couple the first filter and the second filter; if the first filter and the second filter are isolated, the communication device operates in a direct-through state; if the first filter and the second filter are coupled, the communication device operates in a power-dividing state.
7. The apparatus according to claim 6, characterized in that, The common resonant cavity also includes a varactor diode, which is used to control the resonant frequency of the common resonant cavity; If the varactor diode controls the resonant frequency of the common resonant cavity to be far away from the operating frequency band of the first filter and the second filter, then the first filter and the second filter are isolated from each other. If the varactor diode controls the resonant frequency of the common resonant cavity, which is within the operating frequency band of the first filter and the second filter, then the first filter and the second filter are coupled together.
8. A communication device, characterized in that, The communication device includes a first filter, a second filter, and a grounding control component, wherein: The first filter includes at least one resonant cavity, and the second filter includes at least one resonant cavity; the grounding control component is connected to the first resonant cavity of the second filter; The first filter and the second filter are used to filter radio frequency signals; The grounding control component is used to control whether the first resonant cavity of the second filter is grounded; if the first resonant cavity of the second filter is not grounded, the communication device operates in a power-sharing state; if the first resonant cavity of the second filter is grounded, the communication device operates in a pass-through state.
9. The apparatus according to claim 8, characterized in that, The grounding control component is a PIN diode.