Antenna and medical equipment

Abstract

The embodiment of the utility model relates to the technical field of antennas, and particularly discloses an antenna and medical equipment, and the antenna comprises a dielectric layer, a radiation layer and a grounding layer. The dielectric layer is provided with a mounting surface; the radiation layer is arranged on the mounting surface, the radiation layer is arranged in a winding manner, and the radiation layer is provided with a first feed part; and the grounding layer is arranged on the mounting surface, the grounding layer is arranged in a winding manner, the radiation layer and the grounding layer are arranged at an interval, the grounding layer is provided with a second feed part, and the second feed part is coupled with the first feed part. Through the above mode, the radiation layer and the grounding layer are in a winding shape, and the overall size of the radiation layer and the grounding layer can be reduced, so that the overall size of the antenna is reduced, and miniaturization of the antenna is facilitated.

Description

TECHNICAL FIELD

[0001] The embodiment of the utility model relates to the technical field of antenna, especially to an antenna and medical equipment. BACKGROUND

[0002] The implantable antenna is an antenna embedded in a human body or other biological body, which is used for auxiliary treatment of diseases or biological state monitoring through wireless signal communication transmission with an extracorporeal device, such as a cardiac pacemaker, an implantable defibrillator or a capsule endoscope.

[0003] In the process of implanting the implantable antenna into a human body or other biological body, in order to reduce the influence on the internal tissues of the human body or other biological body and improve the safety and comfort of the implantation process, the implantable antenna needs to meet the miniaturization characteristics, therefore, how to realize the miniaturization of the implantable antenna is the research focus. UTILITY MODEL CONTENT

[0004] The embodiment of the utility model relates to an antenna and medical equipment, which can reduce the overall size of the antenna and help miniaturize the antenna.

[0005] To solve the above technical problems, one technical scheme adopted by the embodiment of the utility model provides an antenna, which comprises a dielectric layer, a radiation layer and a grounding layer; the dielectric layer is provided with a mounting surface; the radiation layer is arranged on the mounting surface, and the radiation layer is arranged in a meandering manner; the radiation layer is provided with a first feeding portion; the grounding layer is arranged on the mounting surface, and the grounding layer is arranged in a meandering manner; the radiation layer and the grounding layer are arranged in a spaced manner; the grounding layer is provided with a second feeding portion; and the second feeding portion is coupled with the first feeding portion.

[0006] Optionally, the grounding layer is arranged in a U-shaped manner, the grounding layer forms a U-shaped space, and the radiation layer is at least partially located in the U-shaped space.

[0007] Optionally, the radiation layer comprises a first radiator, a second radiator, a third radiator, a fourth radiator, a fifth radiator and a sixth radiator connected in sequence, the second radiator, the third radiator, the fourth radiator, the fifth radiator and the sixth radiator jointly form an enclosed space, the second radiator and the sixth radiator are arranged in a spaced manner and form an opening, the opening is communicated with the enclosed space, and the first radiator is located outside the enclosed space.

[0008] Optionally, the first radiator extends along a first direction, the second radiator extends from one end of the first radiator along a second direction, the third radiator extends from one end of the second radiator away from the first radiator along the first direction, the fourth radiator extends from one end of the third radiator away from the second radiator along a direction opposite to the second direction, the fifth radiator extends from one end of the fourth radiator away from the third radiator along a direction opposite to the first direction, the sixth radiator extends from one end of the fifth radiator away from the fourth radiator along the second direction, the first direction is perpendicular to the second direction, and the first direction and the second direction are parallel to the mounting surface.

[0009] Optionally, the ground layer comprises a first conductor, a second conductor and a third conductor connected in sequence, the first conductor, the second conductor and the third conductor jointly enclose the U-shaped space, the first radiator is at least partially located in the U-shaped space, the second radiator and the third radiator are located in the U-shaped space, and the fourth radiator is at least partially located in the U-shaped space.

[0010] Optionally, the first conductor extends along the second direction, the second conductor extends from one end of the first conductor along the first direction, and the third conductor extends from one end of the second conductor away from the first conductor along a direction opposite to the second direction.

[0011] Optionally, the dielectric layer comprises a first side, a second side and a third side connected in sequence, one side of the first conductor is flush with the first side, one side of the second conductor is flush with the second side, and one side of the third conductor is flush with the third side.

[0012] Optionally, the first feeding portion is arranged on the fourth radiator, the second feeding portion is arranged on the third conductor, and the first feeding portion is parallel to the second feeding portion.

[0013] Optionally, the antenna comprises a cover layer, the dielectric layer is stacked with the cover layer, the radiating layer and the ground layer are arranged between the dielectric layer and the cover layer, the cover layer at least partially covers the radiating layer and the ground layer, and the first feeding portion and the second feeding portion are staggered with the cover layer.

[0014] To solve the above technical problems, another technical scheme adopted by the embodiment of the utility model is to provide a medical device comprising the above antenna.

[0015] The embodiment of the utility model has the advantages that unlike the prior art, the embodiment of the utility model provides an antenna, which comprises a dielectric layer, a radiation layer and a ground layer; the dielectric layer is provided with a mounting surface; the radiation layer is arranged on the mounting surface and is arranged in a meandering manner; the radiation layer is provided with a first feeding portion; the ground layer is arranged on the mounting surface and is arranged in a meandering manner; the radiation layer and the ground layer are arranged in a spaced manner; the ground layer is provided with a second feeding portion; and the second feeding portion is coupled with the first feeding portion. In the foregoing manner, the radiation layer and the ground layer are both arranged in a meandering manner, so that the overall size of the radiation layer and the ground layer can be reduced, thereby reducing the overall size of the antenna and facilitating the miniaturization of the antenna. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical scheme in the specific embodiments of the utility model or the prior art, the drawings needed to be used in the following description of the specific embodiments or the prior art will be briefly introduced. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn according to the actual proportions.

[0017] Figure 1 is the overall structure schematic diagram of the antenna provided by the embodiment of the utility model;

[0018] Figure 2 is the overall structure explosion map of the antenna provided by the embodiment of the utility model;

[0019] Figure 3 is the partial structure schematic diagram of the antenna provided by the embodiment of the utility model;

[0020] Figure 4 is the schematic diagram of the antenna implanted in the human tissue environment provided by the embodiment of the utility model;

[0021] Figure 5 is the structure schematic diagram of the human tissue environment of simulation example one provided by the embodiment of the utility model;

[0022] Figure 6 is the related parameter diagram of the human tissue environment of simulation example one provided by the embodiment of the utility model;

[0023] Figure 7 is the reflection coefficient diagram of the antenna of simulation example one provided by the embodiment of the utility model;

[0024] Figure 8 is the voltage standing wave ratio diagram of the antenna of simulation example one provided by the embodiment of the utility model;

[0025] Figure 9 is the reflection coefficient diagram of the antenna implanted in the human tissue environment with a depth of 4mm of simulation example one provided by the embodiment of the utility model;

[0026] Figure 10 is the gain graph when the depth of the antenna implanted in the human tissue environment of the simulation example one of the utility model embodiment is 4mm;

[0027] Figure 11 is the radiation direction when the depth of the antenna implanted in the human tissue environment of the simulation example one of the antenna of the utility model embodiment is 4mm Figure 1 ;

[0028] Figure 12 is the radiation direction when the depth of the antenna implanted in the human tissue environment of the simulation example one of the antenna of the utility model embodiment is 4mm Figure 2 ;

[0029] Figure 13 is the radiation direction when the depth of the antenna implanted in the human tissue environment of the simulation example one of the antenna of the utility model embodiment is 4mm Figure 3 ;

[0030] Figure 14 is the structure schematic diagram of the human tissue environment of the simulation example two of the utility model embodiment;

[0031] Figure 15 is the reflection coefficient graph when the depth of the antenna implanted in the human tissue environment of the simulation example two of the utility model embodiment is different;

[0032] Figure 16 is the gain graph when the depth of the antenna implanted in the human tissue environment of the simulation example two of the utility model embodiment is different;

[0033] Figure 17 is the gain graph when the depth of the antenna implanted in the human tissue environment of the simulation example two of the utility model embodiment is 4mm;

[0034] Figure 18 is the radiation direction when the depth of the antenna implanted in the human tissue environment of the simulation example two of the utility model embodiment is 4mm Figure 1 ;

[0035] Figure 19 is the radiation direction when the depth of the antenna implanted in the human tissue environment of the simulation example two of the utility model embodiment is 4mm Figure 2 ;

[0036] Figure 20 is the radiation direction when the depth of the antenna implanted in the human tissue environment of the simulation example two of the utility model embodiment is 4mm Figure 3 .

[0037] Mark explanation:

[0038] 1 medium layer, 11 mounting surface, 12 first edge, 13 second edge, 14 third edge

[0039] 2 radiation layer, 21 first feeding part, 22 first radiator, 23 second radiator, 24 third radiator, 25 fourth radiator, 26 fifth radiator, 27 sixth radiator, 28 enclosed space, 29 opening

[0040] 3 ground layer, 31 second feeding part, 32 U-shaped space, 33 first conductor, 34 second conductor, 35 third conductor

[0041] 4 cover layer

[0042] 100 antenna

[0043] X first direction, Y second direction DETAILED DESCRIPTION

[0044] In order to facilitate the understanding of the present application, the present application will be described in more detail below in conjunction with the drawings and specific embodiments. It should be noted that when an element is described as "fixed to" another element, it can be directly on the other element or one or more intervening elements can be present therebetween. When an element is described as "connected to" another element, it can be directly connected to the other element or one or more intervening elements can be present therebetween. The terms "upper", "lower", "inner", "outer", "vertical", "horizontal" and the like used in the specification indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", etc. are only for the purpose of description and cannot be understood as indicating or implying relative importance.

[0045] Unless otherwise defined, all technical and scientific terms used in the specification have the same meaning as commonly understood by one of ordinary skill in the art to which the present application belongs. The terms used in the specification of the present application are only for the purpose of describing the specific embodiments and are not used to limit the present application. The term "and / or" used in the specification includes any and all combinations of one or more related listed items.

[0046] An implantable antenna is an antenna embedded in a human body or other biological body, which communicates and transmits with an extracorporeal device through wireless signals, and is used for assisting in treating diseases or monitoring biological states, such as a cardiac pacemaker, an implantable defibrillator, or a capsule endoscope, etc.

[0047] In the process of implanting the implantable antenna into a human body or other living body, in order to reduce the influence on the tissue in the human body or other living body and improve the safety and comfort of the implanting process, the implantable antenna needs to meet the miniaturization characteristic, therefore, how to realize the miniaturization of the implantable antenna is the research focus.

[0048] In view of this, the utility model provides an embodiment of an antenna 100, which can reduce the overall size of the antenna 100 and help miniaturize the antenna 100.

[0049] In order to facilitate the reader to understand the concept of the embodiment of the utility model, the specific structure of the antenna 100 is described as follows:

[0050] Please refer to Figures 1 to 3 An antenna 100 for implanting into a human body or other living body comprises a dielectric layer 1, a radiation layer 2 and a ground layer 3; the dielectric layer 1 is provided with a mounting surface 11; the radiation layer 2 is arranged on the mounting surface 11, the radiation layer 2 is arranged in a meandering manner, and the radiation layer 2 is provided with a first feeding portion 21; the ground layer 3 is arranged on the mounting surface 11, the ground layer 3 is arranged in a meandering manner, the radiation layer 2 and the ground layer 3 are arranged in a spaced manner, the ground layer 3 is provided with a second feeding portion 31, and the second feeding portion 31 is coupled with the first feeding portion 21.

[0051] Compared with the linear radiation layer 2 and the linear ground layer 3, by the above-mentioned manner, the radiation layer 2 and the ground layer 3 in the embodiment of the utility model are arranged in a meandering manner, which can reduce the overall size of the radiation layer 2 and the ground layer 3, thereby reducing the overall size of the antenna 100 and helping miniaturize the antenna 100.

[0052] For the above-mentioned radiation layer 2 and ground layer 3, please refer to Figures 1 to 3 The ground layer 3 is arranged in a U-shaped manner, the ground layer 3 forms a U-shaped space 32, and the radiation layer 2 is at least partially located in the U-shaped space 32.

[0053] By the above-mentioned manner, the ground layer 3 provides the U-shaped space 32 for the radiation layer 2 to embed, so that the ground layer 3 is at least partially arranged around the radiation layer 2, provides space utilization, can reduce the overall volume of the radiation layer 2 and the ground layer 3, thereby reducing the overall size of the antenna 100, and helping miniaturize the antenna 100.

[0054] For the above-mentioned radiation layer 2, please refer to Figures 1 to 3, the radiation layer 2 comprises a first radiator 22, a second radiator 23, a third radiator 24, a fourth radiator 25, a fifth radiator 26 and a sixth radiator 27 connected in sequence, the second radiator 23, the third radiator 24, the fourth radiator 25, the fifth radiator 26 and the sixth radiator 27 jointly enclose a surrounding space 28, the second radiator 23 is spaced apart from the sixth radiator 27 and forms an opening 29, the opening 29 communicates with the surrounding space 28, and the first radiator 22 is located outside the surrounding space 28. Among them, a plurality of radiators enclose the surrounding space 28, which not only realizes the winding arrangement of the radiation layer 2, increases the extension length of the radiation layer 2, and enhances the radiation effect of the radiation layer 2, but also improves the uniformity of the radiation direction of the radiation layer 2. In addition, the radiators are spaced apart from each other and form the opening 29, which helps to adjust the directivity of the radiation, so that the antenna 100 realizes miniaturization while maintaining good radiation performance.

[0055] Further, for the above-mentioned radiation layer 2, please refer to Figures 1 to 3 , the first radiator 22 extends along the first direction X, the second radiator 23 extends from one end of the first radiator 22 along the second direction Y, the third radiator 24 extends from one end of the second radiator 23 away from the first radiator 22 along the first direction X, the fourth radiator 25 extends from one end of the third radiator 24 away from the second radiator 23 along the opposite direction of the second direction Y, the fifth radiator 26 extends from one end of the fourth radiator 25 away from the third radiator 24 along the opposite direction of the first direction X, and the sixth radiator 27 extends from one end of the fifth radiator 26 away from the fourth radiator 25 along the second direction Y. The first direction X is perpendicular to the second direction Y, and the first direction X and the second direction Y are both parallel to the mounting surface 11.

[0056] In the above manner, the first radiator 22, the second radiator 23, the third radiator 24, the fourth radiator 25, the fifth radiator 26 and the sixth radiator 27 are connected in sequence and perpendicular to each other, which helps to reduce the electromagnetic interference between the plurality of radiators, reduces signal attenuation and performance loss, so that the antenna 100 realizes miniaturization while maintaining good radiation performance.

[0057] For the above-mentioned ground layer 3, please refer to Figures 1 to 3The ground layer 3 comprises a first conductor 33, a second conductor 34 and a third conductor 35 connected in sequence, the first conductor 33, the second conductor 34 and the third conductor 35 jointly enclose a U-shaped space 32, the first radiator 22 is at least partially located in the U-shaped space 32, the second radiator 23 and the third radiator 24 are located in the U-shaped space 32, and the fourth radiator 25 is at least partially located in the U-shaped space 32. Wherein, the first conductor 33, the second conductor 34 and the third conductor 35 jointly enclose the U-shaped space 32, which can make the ground layer 3 form a symmetrical structure, help to reduce the asymmetry of radiation, effectively guide the radiation to the preset direction, reduce the fluctuation of the radiation, and make the signal transmission more stable and the direction more accurate.

[0058] Further, for the above-mentioned ground layer 3, please refer to Figures 1 to 3 The first conductor 33 extends along the second direction Y, the second conductor 34 extends from one end of the first conductor 33 along the first direction X, and the third conductor 35 extends from one end of the second conductor 34 away from the first conductor 33 along the opposite direction of the second direction Y.

[0059] In the above manner, the first conductor 33, the second conductor 34 and the third conductor 35 are connected in sequence and vertically, which helps to reduce the electromagnetic interference between the multiple conductors, reduces signal attenuation and performance loss, so that the antenna 100 can be miniaturized while maintaining good radiation performance.

[0060] For the above-mentioned radiation layer 2 and ground layer 3, please refer to Figures 1 to 3 In some embodiments, the first feeding part 21 is arranged on the fourth radiator 25, the second feeding part 31 is arranged on the third conductor 35, and the first feeding part 21 is parallel to the second feeding part 31.

[0061] For the above-mentioned dielectric layer 1, please refer to Figures 1 to 3 The dielectric layer 1 comprises a first edge 12, a second edge 13 and a third edge 14 connected in sequence, one side of the first conductor 33 is flush with the first edge 12, one side of the second conductor 34 is flush with the second edge 13, and one side of the third conductor 35 is flush with the third edge 14.

[0062] For the above-mentioned antenna 100, please refer to Figures 1 to 3 The antenna 100 comprises a cover layer 4, the dielectric layer 1 and the cover layer 4 are stacked, the radiation layer 2 and the ground layer 3 are arranged between the dielectric layer 1 and the cover layer 4, the cover layer 4 at least partially covers the radiation layer 2 and the ground layer 3, and the first feeding part 21 and the second feeding part 31 are staggered with the cover layer 4.

[0063] In this way, the cover layer 4 not only can play an isolation role, but also can enhance the overall structural strength of the antenna 100 after the antenna 100 is implanted in the human body, so that the antenna 100 can bear a certain pressure or impact in the human body.

[0064] In order to verify the concept of the antenna 100 of the embodiment of the utility model, the following provides simulation example one:

[0065] Firstly, please refer to Figure 4 , a human tissue environment with a size of 100mm*100mm is constructed, then, please refer to Figure 5 , the human tissue environment is composed of skin-tendon-cortical bone, secondly, please refer to Figure 6 , when the human tissue environment is composed of skin-tendon-cortical bone, the related parameters of the skin layer, the tendon layer and the cortical bone layer are set, and the human tissue environment is preset in a 4GHz environment, finally, the antenna is implanted in the center of the human tissue environment, and the simulation performance of the antenna in the human tissue environment, such as impedance, radiation and peak SAR, is monitored, so as to judge whether the antenna meets the requirements. The specific is as follows:

[0066] Please refer to Figure 7 , the reflection coefficient (S11) graph of the antenna implanted in the human tissue environment (skin-tendon-cortical bone) at different depths is shown. Among them, for the reflection coefficient (S11) of the antenna, it is usually required to be less than-10dB, so that the antenna has smaller reflection loss. It can be known from Figure 7 that when the antenna is implanted in the skin layer and the tendon layer, the S11 of the antenna is less than-10dB in the frequency band of 1.33GHz-6GHz, and the antenna meets the requirements.

[0067] Please refer to Figure 8 , the voltage standing wave ratio (VSWR) graph of the antenna implanted in the human tissue environment (skin-tendon-cortical bone) at different depths is shown. Among them, for the voltage standing wave ratio of the antenna, it is usually required to be less than 2, so that the antenna has good impedance matching. It can be known from Figure 8 that when the antenna is implanted in the skin layer and the tendon layer, the VSWR of the antenna is less than 2 in the frequency band of 1.33GHz-6GHz, and the antenna meets the requirements.

[0068] Please refer to Figure 9 , the reflection coefficient (S11) graph of the antenna implanted in the human tissue environment (skin-tendon-cortical bone) at a depth of H=4mm (skin layer) is shown. Among them, for the reflection coefficient (S11) of the antenna, it is usually required to be less than-10dB, even less than-20dB, so that the antenna has smaller reflection loss. It can be known from Figure 9It can be seen that when the depth of the antenna implanted in the human tissue environment (skin-tendon-cortical bone) is H = 4mm (skin layer), at a frequency of 1.4GHz, the antenna's S11 is -12dB, which enables the antenna to have a small reflection loss and meet the performance requirements. Furthermore, at a frequency of 2.45GHz, the antenna's S11 is -24dB, which enables the antenna to have an even smaller reflection loss and further meet the performance requirements. Therefore, the antenna meets the requirements.

[0069] Please see Figure 10 The diagram shows the gain of an antenna implanted at a depth of H = 4 mm (skin layer) in the human tissue environment (skin-tendon-cortical bone). Typically, an antenna gain greater than -26 dBi is required to achieve good gain. Figure 10 It can be seen that when the antenna is implanted into the human tissue environment (skin-tendon-cortical bone) at a depth of H = 4mm (skin layer), the antenna gain is -17dBi at a frequency of 1.4GHz, -17.5dBi at a frequency of 2.45GHz, and -25dBi at a frequency of 5.8GHz. Thus, although the antenna gain changes with frequency, within the frequency band of 1.33GHz-6GHz, the antenna gain is greater than -26dBi, and the maximum antenna gain can reach -15dBi, which meets the performance requirements and the antenna meets the requirements.

[0070] Please see Figures 11 to 13 The diagram shows the radiation pattern when the antenna is implanted into the human tissue environment (skin-tendon-cortical bone) at a depth of H = 4 mm (skin layer). Figures 11 to 13 It can be seen that when the antenna is at different frequencies, the direction of the antenna's maximum gain is always towards the +Z direction, so that the antenna has good directivity. That is, the antenna's radiation direction is basically kept towards the outside of the skin, and the antenna meets the requirements.

[0071] To further verify the concept of the antenna 100 in this embodiment of the present invention, simulation example two is provided below:

[0072] First, please refer to Figure 14 The process involves replacing the tendon layer of the skin-tendon-cortical bone structure in a human tissue environment with a muscle-fat mixed layer, increasing its thickness from 2.5mm to 15mm, thus creating a skin-muscle-fat mixed-cortical bone human tissue environment. Next, this human tissue environment is preset to a 4GHz environment. Finally, an antenna is implanted at the center of this human tissue environment. The antenna's simulated performance within the human tissue environment, such as impedance, radiation, and peak SAR, is monitored to determine if the antenna meets the requirements. Details are as follows:

[0073] Please see Figure 15Fig. 4 shows the reflection coefficient (S11) graph of the antenna implanted in the human tissue environment (skin-muscle fat mixed-cortical bone) at different depths. It can be seen from Fig. 4 that when the implantation depth changes from the skin to the muscle fat mixed layer, the resonant point moves to the high frequency due to the shortening of the electrical length caused by the high dielectric constant of the muscle fat mixed layer, the bandwidth at the low frequency is narrowed, and the antenna performance in the skin layer and the muscle fat mixed layer is basically stable, and the antenna meets the requirements. Figure 15

[0074] Fig. 5 shows the gain graph of the antenna implanted in the human tissue environment (skin-muscle fat mixed-cortical bone) at different depths. It is generally required that the gain of the antenna is greater than -26dBi so that the antenna has good gain. It can be seen from Fig. 5 that when the antenna is implanted in the human tissue environment (skin-muscle fat mixed-cortical bone) at different depths, the gain of the antenna is greater than -18dBi at the frequency of 1.4GHz, and the gain of the antenna is greater than -18dBi at the frequency of 2.45GHz. Therefore, although the gain of the antenna changes with the change of the frequency, the gain of the antenna is greater than -26dBi in the frequency band of 1.33GHz-6GHz, and the maximum gain of the antenna can reach -13dBi, and the antenna meets the requirements. Figure 16 Figure 16 Fig. 6 shows the gain graph of the antenna implanted in the human tissue environment (skin-muscle fat mixed-cortical bone) at the depth of H=4mm (skin layer). It is generally required that the gain of the antenna is greater than -26dBi so that the antenna has good gain. It can be seen from Fig. 6 that when the antenna is implanted in the human tissue environment (skin-muscle fat mixed-cortical bone) at the depth of H=4mm (skin layer), the gain of the antenna is -13dBi at the frequency of 1.4GHz, and the gain of the antenna is -16.5dBi at the frequency of 2.45GHz. Therefore, although the gain of the antenna changes with the change of the frequency, the gain of the antenna is greater than -26dBi in the frequency band of 1.33GHz-6GHz, and the maximum gain of the antenna can reach -13dBi, and the antenna meets the requirements.

[0075] Fig. 7 shows the directional graph of the antenna implanted in the human tissue environment (skin-muscle fat mixed-cortical bone) at the depth of H=4mm (skin layer). It can be seen from Fig. 7 that when the antenna is at different frequencies, the maximum gain direction of the antenna is always towards the +Z direction, so that the antenna has good directivity, that is, the radiation direction of the antenna is basically towards the outside of the skin, and the antenna meets the requirements. Figure 17 Figure 17 Fig. 8 shows the directional graph of the antenna implanted in the human tissue environment (skin-muscle fat mixed-cortical bone) at the depth of H=4mm (skin layer). It can be seen from Fig. 8 that when the antenna is at different frequencies, the maximum gain direction of the antenna is always towards the +Z direction, so that the antenna has good directivity, that is, the radiation direction of the antenna is basically towards the outside of the skin, and the antenna meets the requirements.

[0076] Fig. 9 shows the directional graph of the antenna implanted in the human tissue environment (skin-muscle fat mixed-cortical bone) at the depth of H=4mm (skin layer). It can be seen from Fig. 9 that when the antenna is at different frequencies, the maximum gain direction of the antenna is always towards the +Z direction, so that the antenna has good directivity, that is, the radiation direction of the antenna is basically towards the outside of the skin, and the antenna meets the requirements. Figures 18 to 20 Figures 18 to 20 Fig. 10 shows the directional graph of the antenna implanted in the human tissue environment (skin-muscle fat mixed-cortical bone) at the depth of H=4mm (skin layer). It can be seen from Fig. 10 that when the antenna is at different frequencies, the maximum gain direction of the antenna is always towards the +Z direction, so that the antenna has good directivity, that is, the radiation direction of the antenna is basically towards the outside of the skin, and the antenna meets the requirements.

[0077] ​​​​The utility model discloses an antenna 100, including dielectric layer 1, radiation layer 2 and ground layer 3, dielectric layer 1 is provided with mounting surface 11, radiation layer 2 sets up in mounting surface 11, and radiation layer 2 is in a meandering arrangement, and radiation layer 2 is provided with first feed part 21, ground layer 3 sets up in mounting surface 11, and ground layer 3 is in a meandering arrangement, and radiation layer 2 and ground layer 3 are spaced apart, and ground layer 3 is provided with second feed part 31, and second feed part 31 is coupled with first feed part 21, through above -mentioned mode, radiation layer 2 and ground layer 3 are all in a meandering shape, can reduce the overall size of radiation layer 2 and ground layer 3, thereby reduce the overall size of antenna 100, help the miniaturization of antenna 100.

[0078] The utility model further provides the embodiment of medical equipment, and medical equipment includes above -mentioned antenna 100, and the specific structure and function of above -mentioned antenna 100 can refer to above -mentioned embodiment, and here will not be repeated.

[0079] For the above medical equipment, in some embodiments, the medical device is an implantable electronic medical device for assisting in treating diseases, including but not limited to a cardiac pacemaker, an implantable defibrillator, a capsule endoscope, and a cochlear implant, etc.

[0080] The above is only the embodiment of the utility model, and does not limit the patent range of the utility model, and any equivalent structure or equivalent process conversion using the content of the utility model specification and drawings, or direct or indirect application in other related technical fields, are also included in the patent protection range of the utility model.

Claims

1. An antenna, characterized by The antenna comprises: a dielectric layer provided with a mounting surface; a radiation layer provided on the mounting surface, the radiation layer being provided in a meandering manner, the radiation layer being provided with a first feeding portion; a ground layer provided on the mounting surface, the ground layer being provided in a meandering manner, the radiation layer and the ground layer being provided in a spaced manner, the ground layer being provided with a second feeding portion, the second feeding portion being coupled with the first feeding portion.

2. The antenna according to claim 1, wherein the ground layer is provided in a U-shaped manner, the ground layer being formed with a U-shaped space, the radiation layer being at least partially located in the U-shaped space.

3. The antenna according to claim 1, wherein the radiation layer comprises a first radiator, a second radiator, a third radiator, a fourth radiator, a fifth radiator and a sixth radiator connected in sequence, the second radiator, the third radiator, the fourth radiator, the fifth radiator and the sixth radiator jointly forming an enclosed space, the second radiator and the sixth radiator being provided in a spaced manner and being formed with an opening, the opening being communicated with the enclosed space, the first radiator being located outside the enclosed space.

4. The antenna according to claim 3, wherein the first radiator extends along a first direction, the second radiator extends from one end of the first radiator along a second direction, the third radiator extends from one end of the second radiator away from the first radiator along the first direction, the fourth radiator extends from one end of the third radiator away from the second radiator along a direction opposite to the second direction, the fifth radiator extends from one end of the fourth radiator away from the third radiator along a direction opposite to the first direction, the sixth radiator extends from one end of the fifth radiator away from the fourth radiator along the second direction, the first direction being perpendicular to the second direction, the first direction and the second direction being parallel to the mounting surface.

5. The antenna according to claim 4, wherein the ground layer comprises a first conductor, a second conductor and a third conductor connected in sequence, the first conductor, the second conductor and the third conductor jointly forming the U-shaped space, the first radiator being at least partially located in the U-shaped space, the second radiator and the third radiator being located in the U-shaped space, the fourth radiator being at least partially located in the U-shaped space.

6. The antenna according to claim 5, wherein the first conductor extends along the second direction, the second conductor extends from one end of the first conductor along the first direction, and the third conductor extends from one end of the second conductor away from the first conductor along a direction opposite to the second direction.

7. The antenna according to claim 5, wherein the dielectric layer comprises a first side, a second side and a third side connected in sequence, one side of the first conductor being flush with the first side, one side of the second conductor being flush with the second side, and one side of the third conductor being flush with the third side.

8. The antenna according to claim 5, wherein The first feeding portion is arranged on the fourth radiator, and the second feeding portion is arranged on the third conductor, the first feeding portion being parallel to the second feeding portion.

9. The antenna according to any one of claims 1-8, wherein, The antenna comprises a cover layer, the dielectric layer and the cover layer being stacked, the radiating layer and the ground layer being arranged between the dielectric layer and the cover layer, the cover layer at least partially covering the radiating layer and the ground layer, the first feeding portion and the second feeding portion being staggered with the cover layer.

10. A medical device, characterized by An antenna as claimed in any one of claims 1-9.

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