Miniaturized broadband wearable antenna

Abstract

The utility model belongs to the technical field of wearable equipment, and particularly relates to a miniaturized broadband wearable antenna, which comprises an antenna module, the antenna module is detachably hidden in a hat, the antenna module comprises an upper metal layer, a dielectric substrate layer and a lower metal layer, the upper metal layer is arranged on the upper surface of the dielectric substrate layer, and the lower metal layer is arranged on the lower surface of the dielectric substrate layer. The lower metal layer is arranged on the lower surface of the dielectric substrate layer, the upper metal layer is provided with a parasitic patch, and the parasitic patch is used for increasing the bandwidth of the antenna module; the radio frequency lines are detachably hidden in the sleeves, and the radio frequency lines are electrically connected with the antenna modules through hot pressing; the magnetic attraction structure is arranged at the cuff, and the radio frequency line is electrically connected with a wearable device of a user through the magnetic attraction structure. The antenna provided by the utility model adopts a tight coupling technology to realize miniaturization, the bandwidth of the antenna is wide, and the influence of the size of an antenna slot on the antenna is reduced, so that the influence of clothes deformation on the performance of the antenna is reduced.

Description

TECHNICAL FIELD

[0001] The utility model belongs to wearable equipment technical field especially, it relates to a miniaturized wideband wearable antenna. BACKGROUND

[0002] The rapid development of the Internet makes the concept of body area network enter people's field of vision, and wearable antenna becomes a hotspot of antenna research with the popularization and hot sale of wearable equipment in the market. Wearable antenna can be applied to medical monitoring, Internet of Things and military and other aspects. Wireless body area network is developed in wireless personal area network, and is a kind of wireless communication with human as the core, which is composed of sensor nodes placed around, on the surface and in the body of human and a central node. These sensor devices can perceive and collect important physiological parameters such as body temperature and heart rate of human or some environmental parameters such as ambient temperature, and then wirelessly transmit to the central node. The central node receives the information and sends it to a remote server (such as a hospital, a data center, etc.) through WiFi or mobile cellular network for subsequent processing by professionals. The proposal of wireless body area network attracts more attention to wearable equipment. As the bridge in wireless communication, the antenna in wearable equipment also attracts great attention from scholars.

[0003] In the prior art, the antenna is directly etched on the clothes and hats with textile materials to realize integration with the clothes and hats, the antenna occupies a large area of the clothes size, is inconvenient to clean foreign matters, affects the appearance of the clothes, and reduces the comfort of the wearer. UTILITY MODEL CONTENT

[0004] The utility model aims at providing a miniaturized wideband wearable antenna to solve the problems in the prior art.

[0005] To achieve the above-mentioned purpose, the utility model provides a miniaturized wideband wearable antenna, which comprises:

[0006] An antenna module, which is detachably hidden in the clothes and hats, comprises an upper metal layer, a dielectric substrate layer and a lower metal layer, the upper metal layer is arranged on the upper surface of the dielectric substrate layer, the lower metal layer is arranged on the lower surface of the dielectric substrate layer, the upper metal layer is provided with a parasitic patch, and the parasitic patch is used to increase the bandwidth of the antenna module;

[0007] A radio frequency line, which is detachably hidden in the sleeve, and the radio frequency line is electrically connected with the antenna module through heat pressing;

[0008] A magnetic attraction structure, which is arranged at the cuff, and the radio frequency line is electrically connected with the wearable equipment of the user through the magnetic attraction structure.

[0009] Preferably, the upper metal layer comprises a radiation coupling patch, a T-shaped slot is formed on the radiation coupling patch, a bent T-shaped structure is arranged in the T-shaped slot, and a gap is arranged between the bent T-shaped structure and the T-shaped slot.

[0010] Preferably, the lower metal layer comprises a CPW metal floor and a CPW microstrip line, and the CPW microstrip line is used for coupling electromagnetic waves to the bent T-shaped structure.

[0011] Preferably, the radio frequency line is a coaxial line, a metallized via hole is formed on the CPW metal floor and the CPW microstrip line, an inner conductor wire of the coaxial line is bent through the metallized via hole on the CPW microstrip line, an outer conductor wire of the coaxial line is bent through the metallized via hole on the CPW metal floor, and the connection between the coaxial line and the CPW metal floor and the CPW microstrip line is hot-pressed and coated with a waterproof textile layer.

[0012] Preferably, the length of the antenna module is 65mm, the width is 65mm, and the thickness is 0.15mm.

[0013] Preferably, the material of the dielectric substrate layer is polyimide, the dielectric constant of the dielectric substrate layer is 3.5, and the loss tangent is 0.0075.

[0014] Compared with the prior art, the utility model has the following advantages and technical effects:

[0015] The small-sized wideband wearable antenna provided by the utility model realizes miniaturization by adopting tight coupling technology, and has a wide antenna bandwidth, so that the influence of antenna slot size on the antenna is reduced, and the influence of clothing deformation on the antenna performance is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the drawings needed in the embodiments will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the utility model, and other drawings can be obtained by those skilled in the art without creative labor under the premise of not paying the creative labor:

[0017] Figure 1 The structure schematic view of the small-sized wideband wearable antenna hidden in the upper garment is provided for the utility model;

[0018] Figure 2 The side view of the antenna module in the utility model is provided;

[0019] Figure 3 It is a structure schematic view of the upper metal layer in the utility model;

[0020] Figure 4 It is a structure schematic view of the lower metal layer in the utility model;

[0021] Figure 5 It is a coaxial line and antenna module connection structure schematic view in the utility model;

[0022] 1, upper metal layer; 2, dielectric substrate layer; 3, lower metal layer; 4, radiation coupling patch; 5, bending T-shaped structure; 6, parasitic patch; 7, CPW metal floor; 8, CPW microstrip line; 9, coaxial line; 10, metallized via. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the utility model.

[0024] In order to make the above purpose, features and advantages of the utility model more obvious and easy to understand, the utility model will be further described in detail below with reference to the drawings and specific embodiments.

[0025] Referring to Figures 1 to 5 The utility model provides a kind of miniaturization broadband wearable antenna, including:

[0026] Antenna module, antenna module can be hidden in clothes and hat, antenna module includes upper metal layer 1, dielectric substrate layer 2 and lower metal layer 3, upper metal layer 1 is located in the upper surface of dielectric substrate layer 2, lower metal layer 3 is located in the lower surface of dielectric substrate layer 2, upper metal layer 1 is equipped with parasitic patch 6, and parasitic patch 6 is used to increase the bandwidth of antenna module;

[0027] Radio frequency line, radio frequency line can be hidden in sleeve, and radio frequency line is electrically connected with antenna module by heat pressing;

[0028] Magnetic attraction structure, magnetic attraction structure is equipped in the sleeve opening, and radio frequency line is electrically connected with the wearable equipment of user by magnetic attraction structure.

[0029] Magnetic attraction structure connected on radio frequency line, i. e. radio frequency line magnetic attraction connector, is a kind of contactless connector, its function and advantage are mainly reflected in the following several aspects:

[0030] I. connection and fixing effect:

[0031] Contactless connection: The RF cable magnetic attraction connector uses magnetic force to fix the signal transmission line on the connector without the need for a plug and socket. This design simplifies the connection process, and only needs to align the signal transmission line with the base to complete the connection.

[0032] Stable fixation: Each connector has a strong magnet on the base, which can firmly fix the signal transmission line on the base without any mechanical contact, ensuring the stability of the connection.

[0033] II. Signal transmission and protection:

[0034] Signal transmission: The RF cable magnetic attraction connector can ensure stable signal transmission. Its internal structure is designed reasonably, which can effectively reduce the loss and interference in the signal transmission process.

[0035] Electromagnetic protection: The connector also has a ring-shaped metal sheath to protect the signal transmission line and prevent electromagnetic leakage and interference. This design further enhances the stability and reliability of signal transmission.

[0036] III. Application advantages:

[0037] Easy to install and maintain: The RF cable magnetic attraction connector has a simple design, making installation and maintenance very simple. Only need to align the signal transmission line with the base to complete the connection, without complex operation steps. At the same time, since the connector itself has no mechanical structure, the damage rate is low, the service life is long, and the maintenance cost is also low.

[0038] Wide applicability: The RF cable magnetic attraction connector is widely used in the field of communication, especially in some occasions where the signal transmission line needs to be frequently disassembled or replaced. For example, the connection between the antenna and the radio equipment, the internal wiring of electronic equipment, various test instruments and meters, etc. In addition, the magnetic attraction structure can be easily integrated into the product, without occupying too much space, and is very convenient to use.

[0039] IV. Future development trends

[0040] With the rapid development of communication technology, the RF cable magnetic attraction connector will also be more widely used and further improved. In the future, the RF cable magnetic attraction connector will be more miniaturized, intelligentized and integrated, better meeting the changing communication needs.

[0041] In summary, the magnetic attraction structure of the RF cable connection performs well in connection and fixation, signal transmission and protection, and application advantages. Its simple, reliable, easy to install and maintain features make it widely used in the field of communication and show great development potential.

[0042] In the utility model, the inside of the hat and the sleeve is respectively provided with an inner pocket, and the opening part of the inner pocket is sewn with a zipper, the antenna module and the radio frequency wire are conveniently taken out from the inner pocket through the set zipper, and then the clothes are conveniently washed.

[0043] The parasitic patch 6 can improve the bandwidth and forward radiation of the antenna module, thereby reducing the influence of the antenna on the human body; the magnetic attraction structure is provided on the radio frequency wire to conveniently connect the wearable device on the user.

[0044] Further, the upper metal layer 1 comprises a radiation coupling patch 4, a T-shaped slot is formed on the radiation coupling patch 4, a bent T-shaped structure 5 is arranged in the T-shaped slot, a gap is arranged between the bent T-shaped structure 5 and the T-shaped slot, and the parasitic patch 6 is arranged on the radiation coupling patch 4.

[0045] The radiation coupling patch 4 is coupled and radiates energy through the bent T-shaped structure 5, the bent T-shaped structure 5 is mainly bent to lengthen the current path, and the parasitic patch 6 of the bent microstrip line is loaded to increase the bandwidth and improve the forward radiation intensity.

[0046] Further, the lower metal layer 3 comprises a CPW metal floor 7 and a CPW microstrip line 8, and the CPW microstrip line 8 is used to couple electromagnetic waves to the bent T-shaped structure 5.

[0047] The CPW microstrip line 8 is mainly used for signal transmission, the CPW metal floor 7 occupies a large range, improves the forward radiation intensity of the antenna, and thereby reduces the influence on the human body.

[0048] Further, the radio frequency wire is a coaxial line 9, the CPW metal floor and the CPW microstrip line 8 are both provided with a metalized via hole 10, the inner conductor wire of the coaxial line 9 passes through the metalized via hole 10 on the CPW microstrip line 8 and is bent, the outer conductor wire of the coaxial line 9 passes through the metalized via hole 10 on the CPW metal floor 7 and is bent, and the connection parts of the coaxial line 9 and the CPW metal floor and the CPW microstrip line 8 are both wrapped with a waterproof textile layer.

[0049] Specifically, a through hole is punched at the position of the antenna PCB port input signal, the through hole is a metalized via hole 10, the coaxial line 9 is connected at the antenna port, the outer conductor wire of the coaxial line 9 passes through the metalized via hole 10 on the CPW metal floor 7 and is bent, the inner conductor wire of the coaxial line 9 passes through the metalized via hole 10 on the CPW microstrip line 8 and is bent, the inner and outer coaxial lines are bent to prevent the coaxial line from being broken, finally a layer of waterproof textile is wrapped around the antenna periphery and is subjected to high-temperature compression treatment, so that the feeding port is free of welding, is not easy to break, is waterproof and is high-temperature resistant, the antenna is placed in the clothes and the hat, the human body is in a state of activity, so that the antenna is in a state of friction and bending for a long time, and the technology can guarantee the stability of the antenna signal when the antenna is placed in the clothes and the hat.

[0050] Further, the length of the antenna module is 65mm, the width is 65mm, and the thickness is 0.15mm.

[0051] Further, the material of the dielectric substrate layer 2 is polyimide, the dielectric constant of the dielectric substrate layer 2 is 3.5, and the loss tangent is 0.0075.

[0052] The miniaturized broadband wearable antenna has the advantages that the antenna bandwidth is widened, the influence of the antenna slot size on the antenna is reduced, and therefore the influence of the deformation of clothes on the performance of the antenna is reduced.

[0053] In the description of the utility model, it is understood that the orientation or position relationship of the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the utility model, and does not indicate or imply that the device or element indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model.

[0054] The above is only a preferred specific embodiment of the present application, but the protection scope of the present application is not limited thereto, and any person skilled in the art can easily think of changes or replacements within the technical range disclosed by the present application, which should be covered within the protection scope of the present application.

Claims

1. A miniaturized broadband wearable antenna, characterized in that, include: The antenna module is detachable and can be concealed inside clothing or hats. The antenna module includes an upper metal layer (1), a dielectric substrate layer (2), and a lower metal layer (3). The upper metal layer (1) is disposed on the upper surface of the dielectric substrate layer (2), and the lower metal layer (3) is disposed on the lower surface of the dielectric substrate layer (2). The upper metal layer (1) is provided with a parasitic patch (6), which is used to increase the bandwidth of the antenna module. The radio frequency (RF) cable is detachably concealed inside the sleeve, and is electrically connected to the antenna module via thermoforming. A magnetic structure is provided at the cuff, and the radio frequency line is electrically connected to the user's wearable device through the magnetic structure.

2. The miniaturized broadband wearable antenna according to claim 1, characterized in that, The upper metal layer (1) includes a radiation coupling patch (4), a T-shaped groove is provided on the radiation coupling patch (4), a bent T-shaped structure (5) is provided in the T-shaped groove, a gap is provided between the bent T-shaped structure (5) and the T-shaped groove, and the parasitic patch (6) is provided on the radiation coupling patch (4).

3. The miniaturized broadband wearable antenna according to claim 2, characterized in that, The lower metal layer (3) includes a CPW metal floor (7) and a CPW microstrip line (8), which is used to couple electromagnetic waves to the bent T-structure (5).

4. The miniaturized broadband wearable antenna according to claim 3, characterized in that, The radio frequency line is a coaxial line (9). Metallized vias (10) are provided on both the CPW metal floor and the CPW microstrip line (8). The inner conductor of the coaxial line (9) passes through the metallized via (10) on the CPW microstrip line and is bent. The outer conductor of the coaxial line (9) passes through the metallized via (10) on the CPW metal floor and is bent. The connection between the coaxial line (9) and the CPW metal floor and the CPW microstrip line (8) is covered with a waterproof textile layer by heat pressing.

5. The miniaturized broadband wearable antenna according to claim 1, characterized in that, The antenna module is 65mm long, 65mm wide, and 0.15mm thick.

6. The miniaturized broadband wearable antenna according to claim 1, characterized in that, The dielectric substrate layer (2) is made of polyimide, and the dielectric constant of the dielectric substrate layer (2) is 3.5 and the loss tangent is 0.0075.

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