Multi-pole multi-throw switch based on phase change material

Abstract

The invention discloses a multi-pole multi-throw switch based on a phase change material, and belongs to the technical field of multi-pole multi-throw switches, and the switch comprises a base layer which is provided with a first groove body; a circuit on-off control module of the multi-pole multi-throw switch is made of a phase change material, the circuit on-off control module is matched with a plurality of transmission lines, the multi-channel switching function of the multi-pole multi-throw switch is achieved, and the circuit on-off control module is composed of a silicon dioxide layer, a tungsten layer, an aluminum nitride layer, a germanium telluride layer and a silicon dioxide layer. According to the multi-pole multi-throw switch, electronic pulses are applied to the two ends of the tungsten layer to enable the tungsten layer to be heated, heat conduction is carried out through the aluminum nitride layer to be transmitted to the germanium telluride layer, the crystal state of the germanium telluride layer is changed, and circuit on-off control of a module is achieved. The phase-change material on-off control layer made of germanium telluride can reduce the insertion loss of the switch, improve the switching speed and reduce the power consumption in an ultra-wideband high-frequency working environment, meanwhile, multi-pole and multi-throw can realize multi-channel combined use, and meanwhile, the size can be reduced.

Description

Technical Field

[0001] The invention belongs to the technical field of multi-pole multi-throw switches, and in particular relates to a multi-pole multi-throw switch based on phase change materials. Background Art

[0002] In today's RF microwave electronics field, signal processing and circuit control are extremely complex, and switches, as key components, play an indispensable role.

[0003] Traditionally used switches include RF switches, which are made of semiconductor materials such as gallium arsenide. Due to the limitations of the gallium arsenide process, their operating frequency band bandwidth is often relatively narrow, the insertion loss is relatively large in high-frequency working environments, the switching speed is slow, and constant direct current needs to be applied, resulting in high power consumption.

[0004] To solve the above problems, a phase-change single-pole single-throw switch was developed. Although the use of phase-change materials can reduce the insertion loss of the switch, increase the switching speed, and reduce power consumption in an ultra-wideband high-frequency working environment, the single-pole single-throw switch has only one transmission channel and can only be in an open circuit or short circuit state at the same time, which is difficult to meet the needs of multi-channel combination use.

[0005] In view of this, a multi-pole multi-throw switch based on phase change material is designed to solve the above problems. Summary of the invention

[0006] To solve the problems raised in the above background technology, the present invention provides a multi-pole multi-throw switch based on phase change material, which has the characteristics of reducing the insertion loss of the switch in an ultra-wideband high-frequency working environment, increasing the switching speed, reducing power consumption, using multiple channels in combination, and reducing the size.

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a multi-pole multi-throw switch based on phase change material, comprising: a base layer, a first slot body is provided on the base layer, the first slot body is composed of two parallel X-axis slot bodies and a Z-axis slot body, the two X-axis slot bodies are located between the two Z-axis slot bodies, the middle bottom ends of the X-axis slot body and the Z-axis slot body of the first slot body are respectively fixed with a lower insulating layer, the top of the lower insulating layer is fixed with a heating layer, the heating layer is dumbbell-shaped, the middle section of the heating layer is fixed with the lower insulating layer and the two ends extend out of the lower insulating layer, and a second slot body is provided on the base layer corresponding to the extension section of the heating layer The second slot body is connected to the first slot body, the heating layer extension section extends into the corresponding second slot body, the top of the heating layer is covered with a heat-conducting layer, the bottom of the heat-conducting layer is fixedly connected to the top of the lower insulating layer, the top of the heat-conducting layer is fixedly connected to a phase-change material on-off control layer, the extension section of the heating layer located in the second slot body and the top of the phase-change material on-off control layer are respectively fixedly connected to the upper insulating layer, a transmission line is arranged between two adjacent upper insulating layers inside the first slot body, the transmission line is T-shaped, two ends of the transmission line are respectively fixedly connected to two adjacent phase-change material on-off control layers and the upper insulating layer, and the other end is fixedly connected to a Port port.

[0008] Furthermore, the base layer is made of materials including silicon, silicon carbide and silicon nitride.

[0009] Furthermore, the lower insulating layer and the upper insulating layer are both made of silicon dioxide.

[0010] Furthermore, the heating layer is made of tungsten.

[0011] Furthermore, the thermal conductive layer is made of aluminum nitride.

[0012] Furthermore, the material used to make the phase change material on-off control layer includes germanium telluride.

[0013] Furthermore, the transmission line is made of gold.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] The present invention discloses a circuit on-off control module of a multi-pole multi-throw switch made of phase change material, which cooperates with multiple transmission lines to realize the multi-channel switch function of the multi-pole multi-throw switch, wherein the circuit on-off control module is composed of a silicon dioxide layer, a tungsten layer, an aluminum nitride layer, a germanium telluride layer and a silicon dioxide layer. The tungsten layer is heated by applying an electronic pulse at both ends of the tungsten layer, and the heat is transferred to the germanium telluride layer through the aluminum nitride layer, thereby changing the crystal state of the germanium telluride layer to realize the circuit on-off control of the module. Compared with the prior art, the multi-pole multi-throw switch has a phase change material on-off control layer made of germanium telluride, which can reduce the insertion loss of the switch in an ultra-wideband high-frequency working environment, improve the switching speed, and reduce the power consumption. At the same time, the multi-pole multi-throw can realize the combined use of multiple channels and can reduce the volume. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A perspective view of the present invention;

[0017] Figure 2 For the present invention Figure 1 A partial vertical section at the center;

[0018] In the figure: 1. Base layer; 2. Port; 3. First slot; 4. Second slot; 5. Transmission line; 6. Heating layer; 7. Upper insulating layer; 8. Heat conducting layer; 9. Phase change material on / off control layer; 10. Lower insulating layer. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] The present invention provides the following technical solution: a multi-pole multi-throw switch based on phase change material, comprising: a base layer 1, a first slot body 3 is provided on the base layer 1, the first slot body 3 is composed of two parallel X-axis slot bodies and a Z-axis slot body, the two X-axis slot bodies are located between the two Z-axis slot bodies, the middle bottom ends of the X-axis slot body and the Z-axis slot body of the first slot body 3 are respectively fixedly connected to a lower insulating layer 10, the top of the lower insulating layer 10 is fixedly connected to a heating layer 6, the heating layer 6 is dumbbell-shaped, the middle section of the heating layer 6 is fixedly connected to the lower insulating layer 10 and the two ends extend out of the lower insulating layer 10, the base layer 1 is provided with a second slot body 4 corresponding to the extension section of the heating layer 6, the second slot The body 4 is connected to the first slot body 3, the extension section of the heating layer 6 extends into the corresponding second slot body 4, the top of the heating layer 6 is covered with a heat-conducting layer 8, the bottom end of the heat-conducting layer 8 is fixedly connected to the top of the lower insulating layer 10, the top of the heat-conducting layer 8 is fixedly connected to a phase-change material on-off control layer 9, the extension section of the heating layer 6 located in the second slot body 4 and the top of the phase-change material on-off control layer 9 are respectively fixedly connected to an upper insulating layer 7, a transmission line 5 is arranged between two adjacent upper insulating layers 7 inside the first slot body 3, the transmission line 5 is T-shaped, two ends of the transmission line 5 are respectively fixedly connected to two adjacent phase-change material on-off control layers 9 and the upper insulating layer 7, and the other end is fixedly connected to a Port 2.

[0021] See attached Figure 1-2When the multi-pole multi-throw switch based on phase change material is used, electronic pulses are applied to both ends of the heating layer 6 to make the heating layer 6 heat up, and the heat is transferred to the phase change material on-off control layer 9 through the heat conductive layer 8 in the form of heat conduction. The phase change material on-off control layer 9 is heated to become a crystalline state, and the circuit is in an open circuit state, so that the two fixed transmission lines 5 are turned on, so as to realize the conduction of multiple channels;

[0022] By withdrawing the electronic pulses applied to both ends of the heating layer 6, the heating layer 6 is cooled, the phase change material on-off control layer 9 is cooled and becomes amorphous, the circuit is in an open circuit state, and the two fixed transmission lines 5 are disconnected to achieve multi-channel disconnection.

[0023] Specifically, the materials used to make the base layer 1 include silicon, silicon carbide and silicon nitride.

[0024] Specifically, the lower insulating layer 10 and the upper insulating layer 7 are both made of silicon dioxide.

[0025] Specifically, the heating layer 6 is made of tungsten.

[0026] Specifically, the thermal conductive layer 8 is made of aluminum nitride.

[0027] Specifically, the material used to make the phase change material on-off control layer 9 includes germanium telluride.

[0028] Specifically, the transmission line 5 is made of gold.

[0029] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A multi-pole multi-throw switch based on phase change material, characterized in that: include: A base layer (1), wherein a first slot body (3) is provided on the base layer (1), the first slot body (3) is composed of two parallel X-axis slot bodies and a Z-axis slot body, the two X-axis slot bodies are located between the two Z-axis slot bodies, the middle bottom ends of the X-axis slot body and the Z-axis slot body of the first slot body (3) are respectively fixedly connected to a lower insulating layer (10), the top end of the lower insulating layer (10) is fixedly connected to a heating layer (6), the heating layer (6) is arranged in a dumbbell shape, the middle section of the heating layer (6) is fixedly connected to the lower insulating layer (10) and the two ends extend out of the lower insulating layer (10), the base layer (1) is provided with a second slot body (4) corresponding to the extension section of the heating layer (6), the second slot body (4) is connected to the first slot body (3), and the heating layer (6) extends The heating layer (6) is provided with a heat-conducting layer (8) at the top end thereof, the bottom end of the heat-conducting layer (8) is fixedly connected to the top end of the lower insulating layer (10), the top end of the heat-conducting layer (8) is fixedly connected to a phase-change material on-off control layer (9), the extending section of the heating layer (6) located in the second trough (4) and the top end of the phase-change material on-off control layer (9) are respectively fixedly connected to an upper insulating layer (7), a transmission line (5) is provided inside the first trough (3) and between two adjacent upper insulating layers (7), the transmission line (5) is arranged in a T-shape, two ends of the transmission line (5) are respectively fixedly connected to two adjacent phase-change material on-off control layers (9) and the upper insulating layer (7), and the other end is fixedly connected to a port (2).

2. A multi-pole multi-throw switch based on phase change material according to claim 1, characterized in that: The base layer (1) is made of materials including silicon, silicon carbide and silicon nitride.

3. The multi-pole multi-throw switch based on phase change material according to claim 1, characterized in that: The lower insulating layer (10) and the upper insulating layer (7) are both made of silicon dioxide.

4. The multi-pole multi-throw switch based on phase change material according to claim 1, characterized in that: The heating layer (6) is made of tungsten.

5. The multi-pole multi-throw switch based on phase change material according to claim 1, characterized in that: The thermal conductive layer (8) is made of aluminum nitride.

6. The multi-pole multi-throw switch based on phase change material according to claim 1, characterized in that: The material used to make the phase change material on-off control layer (9) includes germanium telluride.

7. The multi-pole multi-throw switch based on phase change material according to claim 1, characterized in that: The transmission line (5) is made of gold.

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