Radio frequency switch with variable structure

Abstract

The invention provides a radio frequency switch with a variable structure, and the switch comprises a radio frequency switch body which comprises a radio frequency main body and a radio frequency switch interface disposed at one end of the radio frequency main body; the radio frequency protection assembly is annularly arranged on the outer surface of the radio frequency main body and comprises a shielding protection unit and a temperature protection unit; the protection adjusting assembly comprises a structure adjusting unit and an output adjusting unit which are matched with each other; wherein the protection adjusting assembly is matched with the radio frequency protection assembly, so that when the structure of the structure adjusting unit is changed, the output adjusting unit can drive the radio frequency protection assembly to generate preset change, and thus the dynamic protection effect on the radio frequency switch body is achieved. By means of the design, the problem that the isolation degree and the heat dissipation effect of an existing radio frequency switch cannot be balanced and optimized can be solved.

Description

Technical Field

[0001] The present invention relates to the technical field of radio frequency equipment, and in particular to a radio frequency switch with a variable structure. Background Art

[0002] RF switches are essential components in modern wireless communication systems and are widely used in applications such as radar, satellite communications, mobile base stations, wireless LANs, Bluetooth, GPS, and various test and measurement equipment. Their primary function is to quickly and reliably switch between multiple RF signal paths, enabling selective control of signal routing. Combining switches into a switch matrix system allows signals from multiple instruments to be routed to a single or multiple DUTs. This allows multiple tests to be performed in the same setup without frequent connections and disconnections. The entire test process can be automated, increasing throughput in high-volume production environments. However, this also places higher demands on RF switches, including higher isolation, faster switching speeds, and improved heat dissipation.

[0003] For example, the prior art with publication number CN221574199U discloses an ultra-low leakage mechanical RF switch, comprising a housing, an insulating frame fixedly connected to the interior of the housing, an RF connector body fixedly connected to the top of the insulating frame and at a position located at the top of the housing, a conductive block movably provided at the bottom of the RF connector body, a connector fixedly connected to the bottom of the insulating frame and at a position located at the bottom of the conductive block, partitions fixedly connected to both sides of the insulating frame, and the opposite sides of the two partitions fixedly connected to the housing. The utility model drives the conductive block to move horizontally through the operation of a motor. When the conductive block contacts the RF connector body and the connector, the RF signal can pass through. When the conductive block is away from the RF connector body and the connector, the RF signal is isolated. The handle is turned to drive the screw to rotate, and the horizontal movement of the conductive block is manually controlled. The operation is simple, the control switch reset is convenient, and the use effect is good.

[0004] However, this existing technology still has flaws. While it adjusts the shielding strength and thus the isolation by adjusting the positional relationship between the conductive block, the RF connector body, and the connector under the drive of a motor, it does not address the problem of weakening the product's heat dissipation effect when adding additional shielding, and it cannot simultaneously balance and optimize the isolation and heat dissipation of the RF switch. Summary of the Invention

[0005] Based on this, it is necessary to provide a radio frequency switch with a variable structure to address the problem that the isolation and heat dissipation effects of existing radio frequency switches cannot be balanced and optimized.

[0006] The present invention provides a radio frequency switch with a variable structure, comprising: The radio frequency switch body comprises a radio frequency main body and a radio frequency switch interface provided at one end of the radio frequency main body; A radio frequency protection component is arranged on the outer surface of the radio frequency body, and includes a shielding protection unit and a temperature protection unit; A protection adjustment component, including a structure adjustment unit and an output adjustment unit that cooperate with each other; The protection adjustment component is arranged in cooperation with the RF protection component so that when the structure of the structural adjustment unit changes, the output adjustment unit drives the RF protection component to undergo a preset change, thereby achieving a dynamic protection effect on the RF switch body.

[0007] Wherein, the shielding protection unit includes: A core protective layer, which is adhered and wrapped around the outer surface of the radio frequency body; An insulating shielding layer is mounted on the outer surface of the core protective layer; A hollow shielding layer, formed by enclosing the core protective layer and the insulating shielding layer; The hollow shielding layer is connected to the output adjustment unit, and shielding gas is injected into the hollow shielding layer.

[0008] Wherein, the temperature protection unit includes: a liquid cooling heat dissipation layer, laid on the outer surface of the shielding protection unit; a heat dissipation shell layer, mounted on the outer surface of the shielding protection unit and enclosing the liquid cooling heat dissipation layer therein; Wherein, the liquid cooling heat dissipation layer is connected to the output adjustment unit.

[0009] The heat dissipation shell layer is in the shape of a hollow cube, and a first heat dissipation slot and a second heat dissipation slot are respectively provided on two opposite large surfaces thereof, and the slots of the first heat dissipation slot and the second heat dissipation slot are both connected to the hollow area in the heat dissipation shell layer; The liquid cooling heat dissipation layer includes a first heat dissipation component and a second heat dissipation component. The first heat dissipation component is located in the first heat dissipation groove, and the second heat dissipation component is located in the second heat dissipation groove.

[0010] Among them, the heat dissipation shell layer is provided with heat dissipation channels evenly distributed in an array at the area opposite to the first heat dissipation slot and the second heat dissipation slot, and the first heat dissipation slot and the second heat dissipation slot are both connected to the external space of the heat dissipation shell layer through the heat dissipation channels.

[0011] Wherein, the output adjustment unit includes: Pipeline components, including gas pipelines and liquid pipelines; an air pump, one port of which is in communication with the hollow shielding layer through the gas conduit; an air storage chamber, connected to another port of the air pump; The structure adjustment unit includes: A piston cylinder body is provided at the end of the heat dissipation shell layer; The piston body is movably mounted in the piston cylinder body and divides the internal space of the piston cylinder body into two independent liquid chambers and gas chambers; Wherein, the liquid chamber is connected to the liquid cooling heat dissipation layer through the liquid pipeline, and the gas chamber is connected to the gas storage chamber.

[0012] The liquid cooling heat dissipation layer is formed by laying out a plurality of "S"-shaped liquid cooling pipe arrays, and a plurality of adjacent liquid cooling pipes are connected end to end with each other; Cooling liquid is injected into the liquid cooling pipe; and the cooling liquid flows in the liquid chamber and the liquid cooling pipe as the position of the piston body in the piston cylinder changes.

[0013] Among them, the protection adjustment component also includes a feedback adjustment unit; the feedback adjustment unit is connected to the air pump, and is used to detect the working status information of the RF body, and drive the air pump to work according to the working status information to adjust the status of the shielding protection unit and the temperature protection unit, thereby achieving a dynamic protection effect on the RF switch body.

[0014] Wherein, the feedback adjustment unit includes: A temperature sensing device, provided on the shielding protection unit, for detecting the operating temperature information of the radio frequency body; A driving device is used to issue corresponding preset control instructions according to the working temperature information to drive the air pump to start or stop until the working temperature information meets the preset temperature condition.

[0015] Wherein, the feedback adjustment unit includes: An air pressure sensing device is provided in the air storage chamber, and is used to detect air pressure change information in the air storage chamber, thereby determining the shielding protection strength of the shielding protection unit; a communication device for receiving shielding protection strength information of the shielding protection unit; A driving device is used to issue corresponding preset control instructions according to the air pressure change information and the shielding protection strength information to drive the air pump to start or stop until the shielding protection strength of the shielding protection unit meets the preset shielding protection strength condition.

[0016] The above technical solution has the following advantages or beneficial effects: In the present invention, when the RF switch interface is connected to the load and the RF body starts to work, due to the characteristics and working principle of the RF switch itself, it may be interfered with by external electromagnetic signals or its own heat may accumulate too much during operation and cannot play a normal role in the circuit. By including an RF protection component on the outer surface of the RF body, the above-mentioned problems can be solved to a certain extent. Specifically, when the RF body is working, the protection adjustment component will start to work, causing the structural adjustment unit therein to undergo structural changes. The impact of the structural change of the structural adjustment unit will be directly transmitted to the temperature protection unit in the RF protection component that is set with it, or transmitted to the shielding protection unit in the RF protection component that is set with it through the output adjustment unit, thereby adjusting the shielding protection unit and the temperature protection unit to make them undergo preset changes, and then optimizing and balancing the heat dissipation effect and isolation of the RF switch body, thereby achieving a dynamic protection effect thereon. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 Schematic diagram of the external structure of the radio frequency switch with variable structure of the present invention; Figure 2 It is a schematic diagram of the partial internal structure of the radio frequency switch with a variable structure of the present invention; Figure 3 Schematic diagram of the cross-sectional structure of the radio frequency switch with a variable structure of the present invention; Figure 4 A schematic diagram of a partial cross-sectional structure of a radio frequency switch with a variable structure according to the present invention; Figure 5 A schematic diagram of a partial cross-sectional structure of a radio frequency switch with a variable structure according to the present invention; Figure 6 Schematic diagram of the local structure of the radio frequency switch with variable structure of the present invention; Figure 7 This is a schematic block diagram of the structure of the protection adjustment component in the radio frequency switch with a variable structure of the present invention; Figure 8 This is a structural block diagram of the feedback adjustment unit in the radio frequency switch feedback adjustment unit with a variable structure of the present invention.

[0018] In the accompanying drawings, the components represented by the reference numerals are as follows: 100, RF switch body; 110, RF main body; 120, RF switch interface; 200, RF protection assembly; 210, shielding protection unit; 220, temperature protection unit; 211, core protection layer; 212, insulation shielding layer; 213, hollow shielding layer; 221, liquid cooling heat dissipation layer; 222, heat dissipation shell layer; 223, first heat dissipation slot; 224, second heat dissipation slot; 225, first heat dissipation component; 226, second heat dissipation Components; 227, heat dissipation duct; 300, protection adjustment assembly; 310, structural adjustment unit; 311, piston cylinder; 312, piston body; 313, liquid chamber; 314, gas chamber; 321, gas pipeline; 322, liquid pipeline; 323, air pump; 324, gas storage chamber; 330, feedback adjustment unit; 331, temperature sensor; 332, drive device; 333, air pressure sensor; 334, communication device. DETAILED DESCRIPTION

[0019] To make the above-mentioned objects, features, and advantages of the present invention more clearly understood, the following is a clear and complete description of the specific embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the specific details described below are only some embodiments of the present invention, and the present invention can also be implemented in many other embodiments different from those described herein. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0020] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly attached to the other element or there may be an intermediate element. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only implementation methods.

[0021] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used in this specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0022] See also Figure 1 、 Figure 2 and Figure 3 The present invention proposes a radio frequency switch with a variable structure, which includes: The RF switch body 100 includes a RF main body 110 and a RF switch interface 120 provided at one end of the RF main body 110; The RF protection component 200 is disposed on the outer surface of the RF body 110 and includes a shielding protection unit 210 and a temperature protection unit 220; The protection adjustment assembly 300 includes a structure adjustment unit 310 and an output adjustment unit that cooperate with each other; Among them, the protection adjustment component 300 is configured in conjunction with the RF protection component 200 so that when the structure of the structure adjustment unit 310 changes, the output adjustment unit will drive the RF protection component 200 to undergo preset changes, thereby achieving a dynamic protection effect on the RF switch body 100.

[0023] The RF switch body 100 may be one of the following common types of RF switches: 1. Solid-state RF switch Solid-state RF switches are built based on semiconductor devices and have advantages such as small size, light weight, high reliability and fast response speed. They are mainly divided into the following categories: (1) PIN diode RF switch, which consists of a forward-biased PIN diode and uses the diode's on and off states to control the signal path. It is suitable for high frequency bands and can handle higher power levels; however, it has a large insertion loss at low frequencies.

[0024] (2) Field-effect transistor RF switches use enhancement-mode or depletion-mode metal oxide semiconductor field-effect transistors to control the conductive channel between the source and drain via gate voltage. They are characterized by a wide operating frequency range, from low frequency to microwave frequency bands; low insertion loss; and ease of integration into IC chips.

[0025] (3) Monolithic microwave integrated circuit RF switches integrate multiple active and passive components on a silicon substrate to form a complete RF switch circuit. They are characterized by miniaturization, high performance, and ease of mass production; they are widely used in millimeter wave communication systems.

[0026] 2. Mechanical RF switch Mechanical RF switches rely on changes in physical contact points to alter circuit connections. Although they have relatively slow response times, they offer excellent electrical performance and high power handling capabilities. They are primarily classified into the following categories: 3. Relay RF switch Relay RF switches contain a movable contact actuated by an electromagnet. When the electromagnet is energized, the contact switches position to establish a new signal path. They are suitable for applications requiring high power handling and good isolation; however, due to the presence of moving parts, they have a limited lifespan and low reliability.

[0027] 4. MEMS RF Switch Micro-electromechanical system technology combines the advantages of mechanical switches with the small size of solid-state switches, bringing new possibilities to RF switches. Its structure includes: Cantilever beam structure: A micro-mechanical structure (such as a cantilever beam) is used as a switching element, and electrostatic attraction is used to bend the beam and make it contact or separate from a fixed electrode.

[0028] Diaphragm structure: A flexible diaphragm is used instead of a cantilever beam, and the opening and closing operations are also achieved through electrostatic action.

[0029] The characteristics of MEMS RF switches are excellent insertion loss and isolation performance with extremely low power consumption, and they can withstand high RF power without damage.

[0030] 5. Multi-port RF switch To meet more complex signal routing requirements, multi-port RF switches have emerged. These switches offer flexible switching between multiple input and output ports, supporting both single-pole, multiple-throw (SPMT) and multi-pole, multiple-throw (MPMT) configurations. They contain several independent switching units, each responsible for connecting a pair of ports. Their compact overall layout minimizes parasitic effects. They simplify the wiring design of complex systems and reduce the need for external components. They are particularly well-suited for multi-channel applications such as phased array radars and MIMO antennas.

[0031] Specifically in the embodiment, when the RF switch interface 120 is connected to the load and the RF body 110 starts working, due to the characteristics and working principle of the RF switch itself, it may be interfered with by external electromagnetic signals or accumulate too much heat during operation and cannot play a normal role in the circuit. By including an RF protection component 200 on the outer surface of the RF body 110, the above-mentioned problems can be solved to a certain extent.

[0032] Specifically, when the RF body 110 is working, the protection adjustment component 300 will start working, causing the structural adjustment unit 310 therein to undergo structural changes. The impact of the structural change of the structural adjustment unit 310 will be directly transmitted to the temperature protection unit 220 in the RF protection component 200 that is configured therewith, or transmitted to the shielding protection unit 210 in the RF protection component 200 that is configured therewith through the output adjustment unit, thereby adjusting the shielding protection unit 210 and the temperature protection unit 220 to cause preset changes, thereby optimizing and balancing the heat dissipation effect and isolation of the RF switch body 100, and achieving a dynamic protection effect thereon.

[0033] In the above embodiment, the heat dissipation and isolation issues need to be addressed because these two issues are due to the structure and working principle of the RF switch body 100 itself. The details are as follows: The reason RF switches require isolation is primarily to ensure system performance, stability, and reliability. Good isolation is a crucial parameter in RF switch design, directly impacting the efficiency and signal quality of the entire RF system. The following are specific reasons why RF switches require isolation: 1. Prevent signal leakage Isolation refers to the degree of signal attenuation from one port to another non-gated port when the RF switch is in the "off" state, usually expressed in decibels.

[0034] Why it matters: Without adequate isolation, signals on the non-gated path can leak into other paths, causing unwanted interference or crosstalk. For example, in a multi-antenna system or multi-channel receiver, this leakage can affect the independence between different channels and degrade overall communication quality.

[0035] 2. Reduce noise and distractions Background noise suppression: High isolation can effectively block electromagnetic noise in the external environment from entering sensitive RF front-end circuits, thereby improving receiving sensitivity.

[0036] Reduced intermodulation distortion: When transmitting and receiving share the same antenna (such as a T / R switch), good isolation helps prevent strong transmit signals from causing intermodulation distortion on weak receive signals, ensuring that both can operate normally without affecting each other.

[0037] 3. Protect downstream components Power handling capability: For some high-power applications (such as radar and base stations), if the isolation is not good enough, the powerful transmit signal may be transmitted back to the low-power receive link, damaging sensitive front-end amplifiers or other components.

[0038] Thermal stability: Proper isolation can also prevent overheating problems due to power leakage, extending equipment life and enhancing system reliability.

[0039] 4. Optimize Multiple-Input Multiple-Output (MIMO) System Performance Spatial diversity gain: In MIMO wireless communication systems, multiple antennas must maintain a high degree of independence to achieve optimal spatial diversity gain. The good isolation provided by RF switches ensures that there is no significant signal coupling between antennas, thereby improving data transmission rate and service quality.

[0040] 5.Support quick switching operation Transient response control: In certain applications, such as phased array radar, RF switches must be able to complete state transitions in an extremely short time. High isolation can help quickly cut off residual signals on the old path, allowing the signal on the new path to quickly establish, ensuring real-time performance and accuracy.

[0041] The RF switch body 100 generates heat during operation due to a combination of factors, including the following: 1. Insertion loss Insertion loss refers to the energy lost when a signal passes through an RF switch and is usually expressed in decibels (dB).

[0042] Heat generation: When an RF signal passes through a switch, some of the energy is converted into heat due to factors such as material resistance and dielectric loss. Although modern RF switch designs strive to minimize insertion loss, this loss remains significant in high-frequency and high-power applications, especially for switches handling high-power signals.

[0043] 2. On-resistance This refers to the equivalent resistance of the internal path of the RF switch when it is in the "on" state.

[0044] Heat generation: When current flows through a conductor with a certain resistance, Joule's law generates heat. Solid-state RF switches, such as FETs or PIN diodes, have a certain on-resistance even when in the on state. This loss can cause temperature rise, especially when handling high power levels.

[0045] 3. Transient effects during switching Each time an RF switch switches state, it experiences a brief transition period during which the voltage and current may exhibit nonlinear changes.

[0046] Heat generation: During this transient process, additional energy consumption may occur, especially in fast-switching applications (such as phased array radar). These transient phenomena include energy loss during charging / discharging, the influence of parasitic capacitance, and electromagnetic induction effects, all of which may be converted into heat.

[0047] 4. Parasitic parameters Actual components in RF switches often have some non-ideal electrical characteristics, such as parasitic inductance, parasitic capacitance, and leakage current.

[0048] Heat generation: These parasitic parameters can cause additional energy loss under high-frequency operating conditions. For example, parasitic capacitance may cause resonance, increasing unnecessary power consumption; while leakage current allows a small amount of current to pass when the switch is turned off, thereby generating additional heat.

[0049] 5. Linearity and nonlinear distortion RF switches should maintain a linear response as much as possible, but may exhibit nonlinear behavior under extreme conditions.

[0050] Heat generation: Nonlinear distortion not only affects signal quality but also introduces additional frequency components, increasing overall energy consumption. For example, third-order intermodulation products and other higher-order harmonics occupy additional bandwidth and consume more energy, ultimately converting to heat. In summary, RF switch heat generation is caused by multiple factors, including inherent losses in the material and structure, as well as operating conditions and technical parameters.

[0051] The following are the main problems that may be caused by excessive heating of the RF switch body 100: 1. Performance degradation Increased insertion loss: As temperature rises, the material resistance increases, causing further increases in insertion loss, thereby reducing signal transmission efficiency.

[0052] Reduced isolation: High temperature can affect the stability of the internal structure of the RF switch, causing poor isolation between unselected paths and increasing the risk of signal leakage.

[0053] Linearity deterioration: Increased temperature will lead to increased nonlinear distortion, resulting in more harmonics and intermodulation products, affecting signal quality and the overall performance of the communication system.

[0054] 2. Shortened lifespan Accelerated material aging: Continuous high temperature environment will accelerate the aging process of semiconductor materials and other components inside the RF switch, shortening its service life.

[0055] Mechanical fatigue: For mechanical or MEMS RF switches, repeated thermal expansion and contraction can cause fatigue damage to mechanical components, increasing the probability of failure.

[0056] 3. Reduced reliability Thermal runaway risk: In extreme cases, heat generation may lead to local overheating, which in turn may cause thermal runaway, where the temperature continues to rise and cannot be effectively controlled, ultimately causing device damage.

[0057] Solder joint failure: High temperatures may weaken the strength of the solder joints between the RF switch and the PCB, especially in applications with frequent thermal cycles, which can easily cause the solder joints to crack or fall off.

[0058] 4. Security Risks Fire hazard: If the heat is severe and there is no proper heat dissipation measures, it may cause other components on the circuit board to overheat and even cause a fire.

[0059] Personal Injury: Operators are at risk of burns when touching hot components, especially during maintenance or commissioning.

[0060] 5. Electromagnetic compatibility issues Increased radiated interference: Nonlinear behavior and parasitic parameter changes caused by heating may lead to additional electromagnetic radiation, affecting the normal operation of surrounding electronic equipment and violating EMC standards.

[0061] The radio frequency switch with a variable structure in this embodiment can solve the above-mentioned problems to a certain extent through structural changes and the effects of the structural changes.

[0062] See also Figure 3 In the above solution, the protection adjustment component 300 can obtain power supply by electrically connecting to the RF body 110 or the RF switch interface 120 .

[0063] In one embodiment, the shielding unit 210 includes: The core protection layer 211 is attached to and wrapped around the outer surface of the RF body 110; The insulating shielding layer 212 is mounted on the outer surface of the core protective layer 211; The hollow shielding layer 213 is formed by the core protection layer 211 and the insulating shielding layer 212; The hollow shielding layer 213 is connected to the output adjustment unit, and shielding gas is injected into the hollow shielding layer 213 .

[0064] For details about the embodiments, please refer to Figure 3 The core protective layer 211, which is attached to and wrapped around the outer surface of the RF body 110, can provide physical protection for the RF body 110, while the insulating shielding layer 212 can provide primary shielding and isolation. At the same time, the core protective layer 211 and the insulating shielding layer 212 enclose an independent and sealed hollow area, which is the hollow shielding layer 213. A certain amount of shielding gas is injected into the hollow shielding layer 213. The shielding gas can enter the hollow shielding layer 213 through the output adjustment unit connected to the hollow shielding layer 213, or can leave the hollow shielding layer 213.

[0065] Specifically, when the RF body 110 is working, the protection adjustment component 300 will start working, causing the structural adjustment unit 310 therein to undergo structural changes. The impact of the structural change of the structural adjustment unit 310 will be directly transmitted to the shielding protection unit 210 in the RF protection component 200 that is configured therewith through the output adjustment unit, thereby adjusting the amount of shielding gas in the hollow shielding layer 213 in the shielding protection unit 210. By adjusting the amount of shielding gas in the hollow shielding layer 213, the shielding isolation effect of the hollow shielding layer 213 and the efficiency of heat transfer from the RF body 110 to the outside can be adjusted until the shielding isolation effect and the heat dissipation effect meet the preset standards, thereby optimizing and balancing the heat dissipation effect and isolation of the RF switch body 100 and achieving a dynamic protection effect thereon.

[0066] The core protection layer 211 may be made of glass material to provide physical protection for the RF body 110 and also serve as a support frame. The shielding gas may be an inert gas.

[0067] The above-mentioned insulating shielding layer 212 is made of insulating material and plays a primary shielding and isolation role.

[0068] See also Figure 3 In one embodiment, the temperature protection unit 220 includes: The liquid cooling heat dissipation layer 221 is laid on the outer surface of the shielding protection unit 210; The heat dissipation shell layer 222 is mounted on the outer surface of the shielding protection unit 210 and wraps the liquid cooling heat dissipation layer 221 therein; The liquid cooling layer 221 is connected to the output adjustment unit.

[0069] For details about the embodiments, please refer to Figure 3 , the liquid-cooled heat dissipation layer 221 and the heat dissipation shell layer 222 are both provided on the outer surface of the shielding protection unit 210. More specifically, in combination with the above embodiment, the liquid-cooled heat dissipation layer 221 and the heat dissipation shell layer 222 are both provided on the outer surface of the insulating shielding layer 212. The heat dissipation shell layer 222 is mounted on the insulating shielding layer 212 and is in direct contact with the insulating shielding layer 212. It is used to absorb the heat accumulated on the insulating shielding layer 212 and transfer the heat to the external space, thereby achieving primary heat dissipation. The liquid-cooled heat dissipation layer 221 laid on the insulating shielding layer 212 is used to directly and quickly absorb the heat accumulated on the insulating shielding layer 212 through the coolant injected therein, and transfer the heat away, thereby further enhancing the heat dissipation effect, so that the RF switch body 100 can be kept within a suitable operating temperature as much as possible.

[0070] Specifically, when the RF body 110 is operating, the protection adjustment component 300 will start to work, causing the structural adjustment unit 310 therein to undergo structural changes. The impact of the structural change of the structural adjustment unit 310 will be directly transmitted to the temperature protection unit 220 in the RF protection component 200 configured therewith through the output adjustment unit, thereby adjusting the liquid cooling heat dissipation layer 221 in the temperature protection unit 220. By adjusting the amount of coolant in the liquid cooling heat dissipation layer 221, the heat transfer effect of the liquid cooling heat dissipation layer 221 can be adjusted until the heat dissipation effect meets the preset standard, thereby optimizing and balancing the heat dissipation effect of the RF switch body 100 and providing a dynamic protection effect thereon.

[0071] The heat dissipation shell layer 222 may be made of an aluminum alloy material, which ensures a heat conduction effect while also having a certain physical strength, and can play a role in physically protecting the RF switch body 100 .

[0072] In the above example, see Figure 3 、 Figure 4 The heat dissipation shell layer 222 may be in the shape of a hollow cube, and a first heat dissipation slot 223 and a second heat dissipation slot 224 are respectively provided on two opposite large surfaces thereof, and the slots of the first heat dissipation slot 223 and the second heat dissipation slot 224 are both connected to the hollow area in the heat dissipation shell layer 222; The liquid cooling heat dissipation layer 221 includes a first heat dissipation component 225 and a second heat dissipation component 226 . The first heat dissipation component 225 is located in the first heat dissipation slot 223 , and the second heat dissipation component 226 is located in the second heat dissipation slot 224 .

[0073] Also, see Figure 2 、 Figure 3 By providing heat dissipation channels 227 evenly distributed in an array on the heat dissipation shell layer 222 in the area opposite to the first heat dissipation groove 223 and the second heat dissipation groove 224, the first heat dissipation groove 223 and the second heat dissipation groove 224 are connected to the external space of the heat dissipation shell layer 222 through the heat dissipation channels 227. This can increase the contact area between the heat dissipation shell layer 222 and the air, and at the same time enable the liquid cooling heat dissipation layer 221 to be in direct contact with the air, thereby further enhancing the heat dissipation effect.

[0074] The liquid cooling heat dissipation layer 221 may include a micro liquid cooling system.

[0075] Conventional liquid cooling systems include: Coolant, as the medium in the liquid cooling system, is used to absorb and transfer heat; Cold plate: The cold plate is directly mounted on the heating element and is made of metal with microchannels or pipes designed inside for the coolant to flow through; The pump body is used to push the coolant to circulate throughout the system; Radiator, used to dissipate the heat absorbed by the heating element to the surrounding environment; An expansion tank, which is used to compensate for changes in coolant volume due to temperature changes and serves as a place to replenish coolant; Control unit, which monitors system parameters such as temperature, flow, and pressure, and adjusts pump speed, fan speed, and other operations according to set values to ensure optimal cooling performance while saving energy; Connecting pipes are used to ensure that coolant can be smoothly transferred between various components and are well sealed to prevent leakage.

[0076] The coolant can include water, ethylene glycol-water solutions, and specialized non-conductive liquids. The heat sink can be air-cooled, using a fan to force air through the fins, or water-cooled, utilizing an external cooling tower or ambient water source for cooling. In some cases, the heat sink may contain phase change material to enhance heat dissipation.

[0077] The working principle of the above-mentioned liquid cooling system is roughly as follows: when the RF body 110 is working, the heat generated is absorbed by the cold plate. Since low-temperature coolant flows in the cold plate, heat is quickly transferred to the coolant, causing the coolant temperature to rise. The pump drives the coolant out of the cold plate and into the radiator. In the radiator, the coolant is cooled by heat exchange with the outside air or another cooling medium. For air-cooled radiators, the fan forces air to flow through the cooling fins, accelerating heat dissipation. For water-cooled radiators, cooling may be achieved through a cooling tower or ambient water source. The coolant cooled by the radiator is pumped back to the cold plate again, forming a closed circulation system. In this process, the coolant continuously removes new heat and discharges it into the environment. The control unit in the system monitors key parameters in real time and dynamically adjusts settings such as pump speed and fan speed according to actual needs to optimize heat dissipation efficiency and reduce energy consumption.

[0078] See also Figure 5 、 Figure 7 In one embodiment, the output adjustment unit includes: Pipeline components, including a gas pipeline 321 and a liquid pipeline 322; an air pump 323 , one port of which is in communication with the hollow shielding layer 213 via a gas conduit 321 ; The air storage chamber 324 is connected to another port of the air pump 323; The structure adjustment unit 310 includes: The piston cylinder 311 is provided at the end of the heat dissipation shell layer 222; The piston body 312 is movably mounted in the piston cylinder 311 and divides the internal space of the piston cylinder 311 into two independent liquid chambers 313 and gas chambers 314; The liquid chamber 313 is connected to the liquid cooling layer 221 through the liquid pipe 322 , and the gas chamber 314 is connected to the gas storage chamber 324 .

[0079] Cooling liquid may be injected into the liquid cooling pipe.

[0080] In the above embodiment, when the RF main body 110 is in operation, the protection adjustment component 300 will start to work, causing the structural adjustment unit 310 therein to undergo structural changes. The effect of the structural change of the structural adjustment unit 310 will be directly transmitted to the shielding protection unit 210 in the RF protection component 200 configured therewith via the output adjustment unit, thereby adjusting the amount of shielding gas in the hollow shielding layer 213 in the shielding protection unit 210. Alternatively, the effect of the structural change of the structural adjustment unit 310 will be directly transmitted to the temperature protection unit 220 in the RF protection component 200 configured therewith via the output adjustment unit, thereby adjusting the liquid cooling heat dissipation layer 221 in the temperature protection unit 220.

[0081] In combination with the structure of the output adjustment unit in this solution, the above embodiment is further illustrated.

[0082] Specifically, when the RF main body 110 is operating, the protection adjustment component 300 will start to operate, causing the air pump 323 therein to start operating. When the air pump 323 is operating, the shielding gas in the air storage chamber 324 will enter the hollow shielding layer 213 through the gas pipe 321, and the shielding gas in the hollow shielding layer 213 will enter the air storage chamber 324 through the gas pipe 321, thereby adjusting the shielding and isolation effect of the hollow shielding layer 213.

[0083] As the shielding gas content in the gas storage chamber 324 increases and decreases, the internal air pressure changes. As the air pressure in the gas storage chamber 324 changes, the air pressure in the gas chamber 314 in the piston cylinder 311 connected to the gas storage chamber 324 also changes, causing the pressure on both sides of the piston body 312 to become unbalanced, thereby causing the piston body 312 to shift within the piston cylinder 311, thereby achieving a structural change in the structural adjustment unit 310. As the piston body 312 shifts within the piston cylinder 311, the coolant in the liquid chamber 313 is squeezed through the liquid pipe 322 into the liquid cooling heat dissipation layer 221, or the coolant in the liquid cooling heat dissipation layer 221 is drawn into the liquid chamber 313 through the liquid pipe 322, thereby adjusting the heat dissipation effect of the liquid cooling heat dissipation layer 221 until the pressure on both sides of the piston body 312 reaches equilibrium.

[0084] Among them, see Figure 2 、 Figure 6 The liquid cooling heat dissipation layer 221 is formed by laying out a plurality of “S”-shaped liquid cooling pipe arrays, and a plurality of adjacent liquid cooling pipes are connected end to end with each other.

[0085] The cooling liquid flows in the liquid chamber 313 and the liquid cooling pipe as the position of the piston body 312 in the piston cylinder 311 changes.

[0086] Through the “S”-shaped liquid cooling pipe design, the liquid cooling heat dissipation layer 221 can be laid on the insulating shielding layer 212 over as large an area as possible to enhance the heat transfer speed, thereby further promoting the heat dissipation of the RF body 110 .

[0087] Of course, the pipeline design of the liquid cooling heat dissipation layer 221 is not limited to the above-mentioned "S"-shaped liquid cooling pipeline distributed in an array, and can also be other forms, such as "Z" shape or "U" shape.

[0088] See also Figure 8 In one embodiment, the protection adjustment component 300 further includes a feedback adjustment unit 330; the feedback adjustment unit 330 is connected to the air pump 323, and is used to detect the working status information of the RF body 110 and drive the air pump 323 to work according to the working status information to adjust the status of the shielding protection unit 210 and the temperature protection unit 220, thereby achieving a dynamic protection effect on the RF switch body 100.

[0089] Specifically in this embodiment, when the RF body 110 is operating, the feedback adjustment unit 330 will issue corresponding control instructions to control the operating state of the protection adjustment component 300 based on the temperature and shielding isolation conditions of the RF body 110. Specifically, the feedback adjustment unit 330 will control the operating state of the air pump 323 based on the temperature and shielding isolation conditions of the RF body 110, turning the air pump 323 on or off to ensure that the shielding isolation effect of the hollow shielding layer 213 and the heat dissipation effect of the temperature protection unit 220 achieve the desired effects.

[0090] See also Figure 8 In one embodiment, the feedback adjustment unit 330 includes: The temperature sensing device 331 is provided on the shielding protection unit 210 and is used to detect the operating temperature information of the RF body 110; The driving device 332 is used to issue corresponding preset control instructions according to the working temperature information to drive the air pump 323 to start or stop until the working temperature information meets the preset temperature condition.

[0091] Among them, the above-mentioned air pumps 323 are all bidirectional pumps.

[0092] Specifically, in this embodiment, when the temperature sensor 331 detects that the temperature exceeds a preset standard, the drive device 332 is triggered and issues a corresponding control command to drive the air pump 323 to open. At this time, the air pump 323 begins to pump the shielding gas in the hollow shielding layer 213 into the air storage chamber 324. The air pressure in the gas chamber 314 of the piston cylinder 311 connected to the air storage chamber 324 increases, causing the pressure on both sides of the piston body 312 to become unbalanced. The piston body 312 begins to move, compressing the liquid chamber 313.

[0093] As the liquid chamber 313 shrinks, the coolant contained therein is squeezed through the liquid pipe 322 and enters the liquid-cooling heat dissipation layer 221, thereby increasing the amount of coolant in the liquid-cooling heat dissipation layer 221 and further enhancing the heat dissipation effect of the liquid-cooling heat dissipation layer 221. When the temperature sensor 331 detects that the temperature meets the preset temperature condition, the drive device 332 is triggered and issues a corresponding control instruction to drive the air pump 323 to shut down.

[0094] See also Figure 8 In one embodiment, the feedback adjustment unit 330 includes: An air pressure sensor 333 is provided in the air storage chamber 324 and is used to detect air pressure change information in the air storage chamber 324, thereby determining the shielding protection strength of the shielding protection unit 210; The communication device 334 is used to receive the shielding protection strength information of the shielding protection unit 210; The driving device 332 is used to issue corresponding preset control instructions according to the air pressure change information and the shielding protection strength information to drive the air pump 323 to start or stop until the shielding protection strength of the shielding protection unit 210 meets the preset shielding protection strength condition.

[0095] When the air pressure sensor 333 detects that the barrier gas content in the air storage chamber 324 exceeds a preset standard, the drive device 332 is triggered and issues a corresponding control instruction to drive the air pump 323 to open. At this time, the air pump 323 begins to pump the barrier gas in the air storage chamber 324 into the hollow shielding layer 213, thereby increasing the amount of barrier gas in the hollow shielding layer 213 and further strengthening the shielding and isolation effect of the hollow shielding layer 213. When the air pressure sensor 333 detects that the barrier gas content in the air storage chamber 324 meets the preset content condition, the drive device 332 is triggered and issues a corresponding control instruction to drive the air pump 323 to close.

[0096] Among them, the communication device 334 can receive external control instructions (such as control instructions directly issued by the user), directly trigger the driving device 332 and issue corresponding control instructions to drive the air pump 323 to turn on or off, so as to meet the user's special needs for the dynamic balance between heat dissipation effect and shielding isolation effect.

[0097] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0098] The above-described embodiments merely represent several implementation methods of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent. It should be noted that a person skilled in the art would be able to make various modifications, substitutions, and improvements without departing from the spirit of the present invention, all of which fall within the scope of protection of the present invention. Therefore, the scope of protection of the patent for this invention should be determined by the claims.

Claims

1. A radio frequency switch with a variable structure, characterized in that: include: The radio frequency switch body comprises a radio frequency main body and a radio frequency switch interface provided at one end of the radio frequency main body; A radio frequency protection component is arranged on the outer surface of the radio frequency body, and includes a shielding protection unit and a temperature protection unit; A protection adjustment component, including a structure adjustment unit and an output adjustment unit that cooperate with each other; The protection adjustment component is arranged in cooperation with the RF protection component so that when the structure of the structural adjustment unit changes, the output adjustment unit drives the RF protection component to undergo a preset change, thereby achieving a dynamic protection effect on the RF switch body.

2. The radio frequency switch with a variable structure according to claim 1, characterized in that: The shielding protection unit includes: A core protective layer, which is adhered and wrapped around the outer surface of the radio frequency body; An insulating shielding layer is mounted on the outer surface of the core protective layer; A hollow shielding layer, formed by enclosing the core protective layer and the insulating shielding layer; The hollow shielding layer is connected to the output adjustment unit, and shielding gas is injected into the hollow shielding layer.

3. The radio frequency switch with a variable structure according to claim 2, characterized in that: The temperature protection unit comprises: a liquid cooling heat dissipation layer, laid on the outer surface of the shielding protection unit; a heat dissipation shell layer, mounted on the outer surface of the shielding protection unit and enclosing the liquid cooling heat dissipation layer therein; Wherein, the liquid cooling heat dissipation layer is connected to the output adjustment unit.

4. The radio frequency switch with a variable structure according to claim 3, characterized in that: The heat dissipation shell layer is in the shape of a hollow cube, and a first heat dissipation groove and a second heat dissipation groove are respectively opened on two opposite large surfaces thereof, and the notches of the first heat dissipation groove and the second heat dissipation groove are both connected to the hollow area in the heat dissipation shell layer; The liquid cooling heat dissipation layer includes a first heat dissipation component and a second heat dissipation component. The first heat dissipation component is located in the first heat dissipation groove, and the second heat dissipation component is located in the second heat dissipation groove.

5. The radio frequency switch with a variable structure according to claim 4, characterized in that: The heat dissipation shell layer is provided with heat dissipation channels evenly distributed in an array at the area opposite to the first heat dissipation slot and the second heat dissipation slot. The first heat dissipation slot and the second heat dissipation slot are both connected to the external space of the heat dissipation shell layer through the heat dissipation channels.

6. The radio frequency switch with a variable structure according to claim 3, characterized in that: The output adjustment unit includes: Pipeline components, including gas pipelines and liquid pipelines; an air pump, one port of which is in communication with the hollow shielding layer through the gas conduit; an air storage chamber, connected to another port of the air pump; The structure adjustment unit includes: A piston cylinder body is provided at the end of the heat dissipation shell layer; The piston body is movably mounted in the piston cylinder body and divides the internal space of the piston cylinder body into two independent liquid chambers and gas chambers; Wherein, the liquid chamber is connected to the liquid cooling heat dissipation layer through the liquid pipeline, and the gas chamber is connected to the gas storage chamber.

7. The radio frequency switch with a variable structure according to claim 6, characterized in that: The liquid cooling heat dissipation layer is formed by laying out a plurality of "S"-shaped liquid cooling pipe arrays, and a plurality of adjacent liquid cooling pipes are connected end to end with each other; Cooling liquid is injected into the liquid cooling pipe; and the cooling liquid flows in the liquid chamber and the liquid cooling pipe as the position of the piston body in the piston cylinder changes.

8. The radio frequency switch with a variable structure according to claim 6, characterized in that The protection adjustment component also includes a feedback adjustment unit; the feedback adjustment unit is connected to the air pump, and is used to detect the working status information of the RF body, and drive the air pump to work according to the working status information to adjust the status of the shielding protection unit and the temperature protection unit, thereby achieving a dynamic protection effect on the RF switch body.

9. The radio frequency switch with a variable structure according to claim 8, characterized in that: The feedback adjustment unit includes: A temperature sensing device, provided on the shielding protection unit, for detecting the operating temperature information of the radio frequency body; A driving device is used to issue corresponding preset control instructions according to the working temperature information to drive the air pump to start or stop until the working temperature information meets the preset temperature condition.

10. The radio frequency switch with a variable structure according to claim 8 or 9, characterized in that: The feedback adjustment unit includes: An air pressure sensing device is provided in the air storage chamber, and is used to detect air pressure change information in the air storage chamber, thereby determining the shielding protection strength of the shielding protection unit; a communication device for receiving shielding protection strength information of the shielding protection unit; A driving device is used to issue corresponding preset control instructions according to the air pressure change information and the shielding protection strength information to drive the air pump to start or stop until the shielding protection strength of the shielding protection unit meets the preset shielding protection strength condition.

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