20 results about "Wearable antennas" patented technology

The utility model relates to a flexible wearable liquid metal antenna and wearable electronic equipment, and belongs to the technical field of wearable antennas. Comprising a dielectric substrate, a grounding metal sheet, a feed port metal sheet, a metal floor and an inverted F-shaped groove, according to the dual-band wrist type PIFA antenna, a flexible material PDMS is used as a dielectric substrate, liquid metal EGaIn is used as a radiation material, and the EGaIn is wrapped in a microfluidic channel formed by the PDMS, so that the wearable antenna working at two frequency bands of 2.4 GHz and 5.8 GHz is realized. Compared with a traditional solid metal wearable antenna, the wearable antenna designed on the basis of liquid metal can well receive signals, material fatigue or cracking cannot be caused by repeated bending, and the wearable antenna has high self-repairing capacity and has more advantages in the wearable aspect.

The invention discloses a high-gain circularly-polarized ultra-wideband flexible wearable SIW antenna array and application thereof, and belongs to the field of wearable antennae, the high-gain circularly-polarized ultra-wideband flexible wearable SIW antenna array comprises a central array element and a plurality of circumferential array elements which are uniformly distributed around the central array element in a circumferential array, and the central array element and the circumferential array elements form a symmetrical arrangement structure. The overall gain of the array is improved through the superimposed effect of the radiation energy of the array elements; meanwhile, a rotary feeding mode is adopted for the center array element and all the circumferential array elements, the excitation amplitudes of the center array element and the circumferential array elements are kept consistent in the feeding process, and excitation phases are distributed in a preset gradient mode. By adopting the high-gain circularly-polarized ultra-wideband flexible wearable SIW antenna array and the application thereof, the antenna array has the characteristics of ultra wideband, circular polarization, miniaturization and high-gain directional radiation; high-speed data transmission and effective transmission and receiving of in-vitro long-distance signals can be realized, the problem of polarization mismatch in a dynamic scene is relieved, seamless integration of clothes is facilitated, and stable performance can still be kept under the influence of human body load.

The application relates to the technical field of wearable antennas, in particular to a metal frame smart watch antenna based on a double-feed technology, which comprises a metal frame, a metal ground plate, a parasitic metal, a first feed port, a second feed port, a feed source, a power divider and a phase shifter; the feed source forms two feed paths through the power divider, one of which feeds into the first feed port, and the other feeds into the second feed port through the phase shifter. The antenna can be configured to connect a slot antenna to the first feed port and connect a patch antenna to the second feed port so that the two antennas work simultaneously, or configured to connect the two feed ports to the same patch antenna so that the patch antenna generates a double mode. The scheme is favorable for improving the low-frequency antenna efficiency, improving the bandwidth performance, and realizing double-feed work under the condition of a single excitation source.

The present invention discloses a wearable fabric antenna based on substrate integrated waveguide. The antenna comprises an upper metal patch, a dielectric substrate layer, a lower metal ground and a feeding probe arranged in sequence from top to bottom; a metal through hole array penetrating the dielectric substrate is provided on the dielectric substrate layer; the metal through hole array connects the upper metal patch and the lower metal ground. The metal through hole array, the upper metal patch and the lower metal ground together form a semicircular substrate integrated waveguide cavity; the feeding probe is connected to the upper metal patch and the lower metal ground respectively. The upper metal patch is a circular patch with a cutout and a curved rectangular gap etched therein, the cutout forms an open edge for adjusting the resonant frequency of the substrate integrated waveguide cavity, and the curved rectangular gap is used to radiate electromagnetic waves. Compared with general fabric wearable antennas, the antenna has the advantages of novel structure, wide bandwidth, good stability, low cost, and easy integration with the human body.

The application discloses a kind of dual-frequency wearable antenna based on substrate integrated waveguide, including dielectric substrate, bottom ground layer, radiating patch, and multiple metallized through holes, through the dielectric substrate, and electrically connected the outer edge of radiating patch and bottom ground layer, to form a semi-open resonant cavity by enclosing;Wherein, at least one asymmetric slot is opened on radiating patch;Semi-open resonant cavity and bottom ground layer jointly suppress backward radiation towards human direction, and when antenna is attached to human body, the dielectric constant difference between human tissue and dielectric substrate forms dielectric reflection interface, at least part of backward electromagnetic energy is redirected to away from human direction, to enhance the radiation gain of antenna in away from human direction.The present application converts human tissue into auxiliary reflection structure, realizes gain enhancement under the condition of body, rather than attenuation, effectively solves the problem of traditional wearable antenna close to human body after radiation efficiency and gain decline.

The utility model relates to the technical field of wearable antennas, and discloses a wearable antenna which comprises a rotating mechanism, the right side of the rotating mechanism is fixedly connected with a supporting mechanism, the top of the supporting mechanism is connected with an installation mechanism in a clamped mode, the rotating mechanism comprises a wearing ring, the top of the wearing ring is provided with a ring groove, and the ring groove is provided with a clamping groove. A fixing column is fixedly connected to the interior of the wearing ring, a watchband is fixedly connected to the left side of the wearing ring, and an insertion hole is formed in the front end of the watchband. The watch is mounted on the fixing ring and the fixing block on the supporting plate through the fixing groove and the mounting groove in the bottom of the mounting box, and then a bolt is rotated upwards through a screw hole in the supporting plate; the bolt passes through the groove in the fixing ring to enable the top of the fixing ring to expand outwards and be clamped with the clamping groove in the mounting box, so that the mounting box is fixed, a stable fixing effect can be provided, it is ensured that the mounting box cannot loosen or move in the using process, and quick mounting and fixing and convenient dismounting can be achieved.

The invention belongs to the technical field of wearable antennas, and particularly relates to a miniaturized five-frequency-band wearable antenna based on flexible fabric and a manufacturing method thereof.The miniaturized five-frequency-band wearable antenna comprises a radiation patch, a first substrate, a second substrate and a grounding panel, and the second substrate is provided with a feed structure; the feed structure is provided with two short-circuit pins and a square notch resonance ring, the multiband wearable antenna has five working bands, and each working band has an edge emission directional diagram pointing to the normal direction. The preparation method comprises the following steps: step 1, designing the radiation patch of the microstrip patch antenna according to design requirements; and 2, selecting a corresponding feed mode and designing a feed structure according to the size of the radiation patch and a design target. The multiband wearable antenna designed by the invention has the advantages of multiple frequency bands, miniaturization, low profile, low SAR (Synthetic Aperture Radar), easiness in manufacturing, simple structure and the like.

The application discloses a high-gain circularly polarized ultra-wideband flexible wearable SIW antenna array and application thereof, and belongs to the field of wearable antennas. The application comprises a central array element and a plurality of circumferential array elements uniformly distributed in a circumferential array around the central array element. The central array element and the circumferential array elements form a symmetrical arrangement structure to improve the overall gain of the array through the superposition effect of the array element radiation energy. Meanwhile, a rotating feeding mode is adopted for the central array element and all the circumferential array elements. During the feeding process, the excitation amplitudes of the central array element and the circumferential array elements are kept consistent, and the excitation phases are in a preset gradient distribution. The high-gain circularly polarized ultra-wideband flexible wearable SIW antenna array and application thereof have the characteristics of ultra-wideband, circular polarization, miniaturization and high-gain directional radiation, and can realize high-speed data transmission, effective transmission and reception of external long-distance signals, alleviate polarization mismatch problems in dynamic scenes, facilitate seamless integration of clothing, and still maintain stable performance under the influence of human body load.

A flexible composite substrate for a wearable antenna includes a fabric sheet and a single-layer dielectric film immersed into the fabric sheet. The single-layer dielectric film includes a dielectric resin matrix and a low dielectric loss material which is mixed with the dielectric resin matrix and which serves as a wireless functional dielectric interface material.

The invention relates to the technical field of wireless communication, in particular to a scaly wearable patch antenna, which comprises metal radiation patch units, a fabric dielectric plate, a metal ground and a coaxial feed part, each patch is cut along an E surface and an H surface to form a scale-like metal arrangement structure formed by multiple units, the 20 patches are arranged into a four-layer structure by adopting a mode of firstly arranging the H surface and then arranging the E surface, and a certain number of metal columns with the same radius are used on an overlapping region to connect adjacent patch units of the E surface and the H surface so as to ensure the formation of conducting current; by adjusting the size of each patch and the distance between the metal columns, impedance matching coaxial with 50 ohms can be achieved, and therefore it is guaranteed that the radiation characteristic is kept consistent with that of a traditional rectangular microstrip patch antenna. Compared with a conventional similar patch antenna, the antenna provided by the invention is small in size, has better flexibility, and is suitable for the design of a wearable antenna.

The invention relates to a multi-band high-gain low-specific-absorption-rate wearable antenna based on an AMC. The multi-band high-gain low-specific-absorption-rate wearable antenna comprises a multi-band antenna fed by a coplanar waveguide, an AMC reflecting plate and a spacing layer, the multi-band antenna comprises a first dielectric substrate, a coplanar structure arranged on the first dielectric substrate, and a plurality of radiation branches connected with the coplanar structure. The AMC reflecting plate is composed of AMC reflecting modules based on a plurality of arrays; the AMC reflection module comprises a second dielectric substrate, a radiation assembly and a grounding plate, wherein the radiation assembly and the grounding plate are arranged on the two opposite sides of the second dielectric substrate respectively. The radiation assembly has in-phase reflection phase bandwidth covering all working frequency bands of the multi-frequency-band antenna; the radiation assembly comprises a plurality of radiation rings; on the side face of the second dielectric substrate, the multiple radiation rings are sequentially arranged from inside to outside in the radial direction, and the two radiation rings closest to the center are connected with each other. The wearable antenna of the scheme has more excellent gain and unidirectional radiation characteristics and lower human body specific absorption rate.

A wearable antenna comprises a dielectric substrate (10), a radiation layer (12) and a grounding layer (11), wherein the radiation layer (12) and the grounding layer (11) are located on the two opposite sides of the dielectric substrate (10). The radiation layer (12) comprises an annular patch (121) and a plurality of strip-shaped patches (122) located on the inner side of the annular patch (121). The wearable antenna is provided with at least one through hole (100) penetrating through the dielectric substrate (10) and the grounding layer (11). At least one through hole (100) is located inside the annular patch (121) and is configured to be integrated with a wearable article. The orthographic projection of the at least one through hole (100) on the dielectric substrate (10) does not overlap the orthographic projection of the radiation layer (12) on the dielectric substrate (10).

The invention relates to a directional diagram fixed-frequency switchable miniature fabric wearable antenna, which belongs to the technical field of wearable wireless communication, and comprises a patch layer, a substrate layer and a bottom surface layer which are positioned on the upper and lower end surfaces of the patch layer, a feed probe and symmetrically arranged snap fastener devices, the two metal via hole pipes penetrate through the substrate layer and are connected with the two communication clamping pieces respectively, and the two communication clamping pieces enable the switching diode to be switched on and off by controlling direct current bias voltage, so that switching of the antenna between a patch mode and a monopole mode is achieved. Reconstruction of a working mode and a radiation pattern is realized through a method of setting direct current bias voltage of the snap switch device, miniaturization of the antenna is realized through a method of using a semi-structure, the plane size is only 0.09 lambda2, and the antenna is respectively in a patch mode and a monopole mode under the condition that the direct current bias voltage is 0V and 5V at the frequency of 2.45 GHz, so that the antenna can be applied to the field of antenna communication. Radiation directional diagrams are suitable for in-vitro communication and body surface communication respectively.

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.

A wearable antenna assembly for tomographic brain imaging of a subject, the antenna assembly including: a resilient cap to be worn on the head of a subject whose brain is to be imaged; an array of antennas at least partially embedded in the cap at respective mutually spaced locations such that, when the cap is worn by the subject, the antennas are arranged around the subject's brain; wherein the cap has a multi-layered structure including a layer composed of graphite and aluminium oxide powders dispersed in PDMS to improve the matching of dielectric properties with those of the subject's head.

The invention relates to the field of communication antennas, and particularly discloses a low-profile dual-polarization ultra-wideband flexible wearable antenna. The dielectric substrate layer, the micro-strip resonance feed structure layer and the radiation patch layer are arranged to form the flexible wearable antenna, the structures of the dielectric substrate layer, the micro-strip resonance feed structure layer and the radiation patch layer are specially designed, the impedance bandwidth of the formed antenna covers 300-1200 MHz, the isolation degree is 12 dB or above, quasi-omnidirectional radiation can be achieved, and the antenna has the advantages of being simple in structure, convenient to use and high in practicability. The dual-port antenna has the advantages that the dual ports respectively excite a horizontal polarization mode and a vertical polarization mode, the average gain is respectively greater than 4.74 dBi and 3.82 dBi, the mechanical robustness is better, the dual-port antenna can be effectively suitable for modern emergency communication scenes and complex and diversified emergency rescue actions in the actual wearing process, and the influence of bending, wrinkling and fracture on the antenna robustness is effectively reduced.

With this wearable-type antenna device, positions of a wearing target and a detection object can be detected accurately with certainty. A wearable-type antenna device 1 is wearably provided to a wrist P which is the wearing target, and performs presence detection using electromagnetic properties. The wearable-type antenna device is provided with: a device body 2 having a circuit board 20 built therein; and an antenna body 3 which has one end electrically connected to the circuit board 20 as a fixed end, and which can be wound, either alone or together with the device body 2, around the entire circumference of the wrist P in the circumferential direction without any gaps therebetween along the outer circumference of the wrist P.

Wearable antenna systems in the form of suspenders are disclosed. Such communications suspenders may employ antenna elements having a reduced visual signature while maintaining the load bearing functionality of traditional suspenders. The antenna system can establish mesh networking communications and communicatively couple to portable radios via a communications device. Some of the antenna elements may be within the communications suspenders. A plurality of straps are pivotably coupled to an intermediate portion at one end and a demountable fastener at the other end that couples to the user's garment item (e.g., trousers, shorts, skirts, and similar articles). The straps may include RF shielding material positioned to reflect RF radiation that emanates from the antenna elements away from the user. The antenna elements may be formed using a conductive composition that includes fully exfoliated graphene sheets present as a percolated network in a polymer matrix.

To provide a wearable antenna device that can accurately and reliably detect the position of an object to be worn or detected.SOLUTION: A wearable antenna device 1 is constructed that is attachable to a wrist P, which is an object to be worn, and that performs presence detection using electromagnetic properties. The wearable antenna device 1 includes a device main body 2 that incorporates a circuit board 20, and an antenna body 3 that has one end electrically connected to the circuit board 20 as a fixed end and that can be wrapped around the entire circumference of the wrist P without any gaps in the circumferential direction along the outer periphery of the wrist P, either together with the device main body 2 or alone.SELECTED DRAWING: Figure 1

The utility model relates to the technical field of antennas, in particular to a wearable antenna and a waistband. Wherein the wearable antenna comprises a first radiation part and a first control part of the first radiation part, the first radiation part is woven in a waistband body of the waistband, the first radiation part is used for receiving and / or transmitting electromagnetic waves, and the first control part is arranged on the surface of a waistband buckle of the waistband. The wearable antenna provided by the embodiment of the utility model can be integrated on the waistband in a specific integration mode. The wearable antenna has the advantages of being good in flexibility, high in integration level, attractive and the like.