CN105789845B - Smartwatch and its full frequency band tuned antenna - Google Patents

Abstract

The invention discloses a full-band tuning antenna, which comprises a first radiator, a second radiator and a grounding structure extending from the second radiator; a feeding network is arranged near the second radiator, so One of the first radiator or the second radiator is connected to the feed network through a link tuning system, the other radiator is directly connected to the feed network, and the first radiator is connected to the ground structure through a short circuit. The shorting structure is connected to realize grounding, and one end of the shorting structure is connected to the connection between the second radiator and the grounding structure. A smart watch is also disclosed, which includes a main body part and a wearing part extending from the main body part, and further includes the aforementioned full-band tuning antenna. The smart watch and its full-band tuning antenna of the present invention can meet the requirements of calling and surfing the Internet, making it possible to call the metal watch terminal, and the performance of the antenna is also greatly improved.

Description

Smartwatch and its full frequency band tuned antenna

Technical field

The present invention relates to computer fields, specifically, the present invention relates to a kind of smartwatch and its full frequency band to tune day Line.

Background technique

In the prior art, mobile communication terminal, tablet personal computer, portable computer and Vehicular navigation system etc. Electronic device is integrated with various utility programs or embedded program to realize a variety of different specific functions, as these electronics fill Set it is integrated further increase, the storage equipment of high capacity application and high-speed radiocommunication generally used, The integrated level of these electronic devices will further improve.

The antenna of mobile communication terminal usually requires to meet the following conditions: (1) antenna width is as big as possible, but its height It is small as best one can；(2) antenna will be maintained a certain distance with other metal objects, more remoter better, also, cover the shell of antenna It cannot be made using metal material, the surface coating of shell can not contain metal component, otherwise keep biggish with antenna Distance, this requirement i.e. so-called " Clearance Requirement of antenna "；(3) sky is filled between feeding point and grounding point as much as possible Gas, supporter between the two should also lack as much as possible；(4) it avoids that the position that can generate other frequency range electromagnetic waves is arranged in；(5) The middle position that circuit board is set is avoided, the interference of other circuit elements or other components to radiated wave is avoided, influences to communicate Effect；(6) fixed form of antenna is reliable, reduces or lose reliability after avoiding repeated disassembled and assembled.

Representative of the smartwatch as the mobile communication terminal of miniaturization, has the integrated level of electronic device in it higher Requirement, the especially design of antenna.Smartwatch includes main part and wearing portion, and existing smartwatch is usually by day The main part of line is built in main part, and is covered using the table (bottom) that nonmetallic materials manufacture, to meet wanting for above-mentioned (2) It asks, even if the main radiating element of antenna is arranged in except the main part of wrist-watch, can only also meet WiFi/BT 2.45GHz With the requirement of GPS 1.575GHz, 2G/3G call function can not achieve, it is even more impossible to the network of high speed is carried out using 3G/4G network Communication, is unable to satisfy the requirement of the utility function to miniature movable type communication terminal now.

Summary of the invention

Primary and foremost purpose of the invention aims to solve at least one of above-mentioned technological deficiency, provides a kind of full frequency band tuned antenna.

Secondary objective of the invention aims to solve at least one of above-mentioned technological deficiency, provides a kind of application full frequency band tune The smartwatch of humorous antenna.

To reach the above technical purpose, The technical solution adopted by the invention is as follows:

A kind of full frequency band tuned antenna is provided first comprising the first radiator, the second radiator and from second spoke The ground structure that beam extends；Feeding network, first radiator or the second spoke are equipped at second radiator One of beam tunes feeding network described in system access by link, and another radiator is directly accessed the feeding network, First radiator is connect with ground structure by short-circuit structure to be grounded.

Specifically, first radiator is equipped with feeding point, and the feeding point and link tuning system are with coaxial cable Connection.

Further, one end of the short-circuit structure is connected to the junction of second radiator and ground structure.

Further, the link tuning system includes multiple series connection and resonant element in parallel.

Preferably, link tuning system further includes multiple the resonant element selectively being accessed link tuning system The selection of system switchs.

Specifically, each resonant element includes parallel with one another or concatenated inductance and capacitor.

Preferably, the link tuning system and feeding network are printed on circuit boards.

It is highly preferred that second radiator, ground structure and short-circuit structure are integrally formed.

Next provides a kind of smartwatch comprising main part and the wearing portion extended from the main part, In, it further include foregoing full frequency band tuned antenna.

The structure of the smartwatch specifically: the main part includes bezel, cluster, the table ear for being attached at the bezel, cluster edge, lid It closes and closes the cover in the bezel, cluster bottom surface on the surface of the bezel, cluster end face and lid；The wearing portion includes passing through the table ear respectively The the first wearing item and the second wearing item being connect with the bezel, cluster；First radiator of the full frequency band tuned antenna is arranged in institute It states on the first wearing item, second radiator is arranged on the bezel, cluster, and the ground structure setting is in the bezel, cluster and the On two wearing items, the feeding network and link tuning system are contained in the table chamber as defined by the bezel, cluster, surface and cover It is interior.

The table ear includes at least the third table ear and the 4th table ear for connecting first wearing article, the 4th table It is connected between ear and the bezel, cluster with insulating materials, the third table ear electrically connects with the first wearing item and bezel, cluster respectively It connects.

Preferably, the third table ear, the first wearing item and bezel, cluster are integrally formed.

The table ear further includes the first table ear and the second table being electrically connected for realizing the bezel, cluster and the second wearing item Ear.

Preferably, the bezel, cluster, the second wearing item, the first table ear and the second table ear are integrally formed.

It is highly preferred that the bezel, cluster, the first wearing item, the second wearing item, the first table ear, the second table ear and third table ear point It is not made of metal material.

Selectively, the cover is made of metal material；The bezel, cluster and cover are integrally formed.

Preferably, the table ear is attached at the edge close to the end face of the bezel, cluster.

Above scheme proposed by the present invention will not influence the compatibility of system, Er Qieshi to the change very little of existing system It is now simple, efficient.

Compared with prior art, the present invention has the advantage that

(1) full frequency band tuned antenna of the invention, structure is simple, and electric property is superior, the electricity suitable for a variety of miniaturizations In sub-device, especially smartwatch；

(2) full frequency band tuned antenna of the invention has been attached to link tuning system, and link tuning system composition letter Single, tuning is easy, and by tuning, which may be implemented all frequency ranges that domestic business telecommunication is used: 2/3/4G network 824- 960MHz, 1710-2690MHz；GPS 1575.42±1.023MHz；WIFI 2412—2472MHz；

(3) full frequency band tuned antenna of the invention also can be improved the antenna performance of each demand frequency range by tuning, and improve The practicability of the antenna；

(4) smartwatch of the invention, use the full frequency band tuned antenna so that the smartwatch can satisfy it is logical The performance of words and online, using existing 2G/3G/4G even the 5G network in future；

(5) smartwatch of the invention reduces the limitation of the manufacture material of main part, covers especially for table (bottom) Without limitation in manufacture material, the full metal jacket of more fashion can be designed that, meet current esthetic requirement；

(6) smartwatch of the invention also improves intelligent hand since metal material manufacture main part can be used The structural reliability of table；

(7) smartwatch of the invention, since surface and the wearing portion of main part is arranged in the primary structure of antenna, The stacking difficulty for enormously simplifying body portion thereof electronic component simplifies interior design, and it is attached to increase other The use function of adding keeps the design of smartwatch more flexible, more diversified.

The additional aspect of the present invention and advantage will be set forth in part in the description, these will become from the following description Obviously, or practice through the invention is recognized.

Detailed description of the invention

Above-mentioned and/or additional aspect and advantage of the invention will become from the following description of the accompanying drawings of embodiments Obviously and it is readily appreciated that, in which:

Fig. 1 is the structural schematic diagram of full frequency band tuned antenna of the present invention.

Fig. 2 is that the link of full frequency band tuned antenna of the invention tunes the topological structure schematic diagram of system.

Fig. 3 is the first knot of return loss characteristic of the full frequency band tuned antenna of link tuning system optimization through the invention Fruit figure.

Fig. 4 is the second knot of return loss characteristic of the full frequency band tuned antenna of link tuning system optimization through the invention Fruit figure.

Fig. 5 is the schematic perspective view of smartwatch of the present invention.

Fig. 6 is the electrical structure schematic diagram of smartwatch of the invention.

Fig. 7 is the antenna performance knot obtained by adjusting the first wearing item of smartwatch of the invention and the distance of bezel, cluster Fruit figure.

Fig. 8 is smartwatch surface current distribution of the invention.

Specific embodiment

The embodiment of the present invention is described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning to end Same or similar label indicates same or similar element or element with the same or similar functions.Below with reference to attached The embodiment of figure description is exemplary, and for explaining only the invention, and is not construed as limiting the claims.

Those skilled in the art of the present technique are appreciated that unless expressly stated, singular " one " used herein, " one It is a ", " described " and "the" may also comprise plural form.It is to be further understood that being arranged used in specification of the invention Diction " comprising " refer to that there are the feature, integer, step, operation, element and/or component, but it is not excluded that in the presence of or addition Other one or more features, integer, step, operation, element, component and/or their group.It should be understood that when we claim member Part is " connected " or when " coupled " to another element, it can be directly connected or coupled to other elements, or there may also be Intermediary element.In addition, " connection " used herein or " coupling " may include being wirelessly connected or wirelessly coupling.It is used herein to arrange Diction "and/or" includes one or more associated wholes for listing item or any cell and all combinations.

Those skilled in the art of the present technique are appreciated that unless otherwise defined, all terms used herein (including technology art Language and scientific term), there is meaning identical with the general understanding of those of ordinary skill in fields of the present invention.Should also Understand, those terms such as defined in the general dictionary, it should be understood that have in the context of the prior art The consistent meaning of meaning, and unless idealization or meaning too formal otherwise will not be used by specific definitions as here To explain.

With reference to Fig. 1, full frequency band tuned antenna 1 of the invention includes the first radiator 11, the second radiator 12, ground structure 13, link tuning system 14 and feeding network 15.

Wherein, first radiator 11 is respectively equipped with feeding point 111 and grounding point 112, which passes through The feeding point 111 is connected with coaxial cable 16 with the feeding network 15 to realize that feed, first radiator 11 pass through institute Grounding point 112 is stated to connect with the first interface 131 of the ground structure 13 to be grounded.

Second radiator 12 is respectively equipped with feeding point 121 and grounding point 122, which passes through the feedback Electricity point 121 connects with the feeding network 15 to realize that feed, second radiator 12 are connect by the grounding point 122 with described The third interface 133 of ground structure is connected to be grounded.

Routinely, the needs of feeding network 15 are connect with the ground structure 132 to be grounded, specifically, described Feeding network 15 is connected in the second interface 132 of the ground structure 13.

Further, with reference to Fig. 2, the link tuning has been also connected between first radiator 11 and feeding network 15 System 14 finally realizes the full frequency band tuned antenna 1 to realize the Performance optimization to the full frequency band tuned antenna 1 Full frequency band communication.Link tuning system 14 includes primary path and multiple resonant elements, the resonant element include with it is described Primary path concatenated resonant element 141a and the resonant element 141b in parallel with the primary path, wherein the resonance list of the parallel connection The first one end 141b ground connection.For the flexible combination convenient for the resonant element 141a and resonant element 141b, it is convenient for the resonance list First 141a and resonant element 141b alternative access the primary path and meet actual tuning demand to realize, partly or entirely Resonant element 141a and resonant element 141b respectively further comprise selection switch 142a and select switch 142b.

Specifically, the selection switch 142a is in parallel with the resonant element 141a, and the selection switch 142a is preferably single The switch of single-pole single-throw type.When the selection switch 142a is in open-circuit condition, the access where selection switch 142a is in Off state inputs the signal of the primary path along the tunnel where the resonant element 141a, and signal is passing through Corresponding adjustment can occur after resonant element 141a because of the tunning effect of resonant element 141a, wanted with meeting communication It asks；When some selection switch 142a is connected, the straight pathway parallel with the resonant element 141a is formed, inputs institute The signal for stating primary path will directly pass through the straight pathway, and the resonant element 141a does not have signal to pass through, the resonant element 141a will not work, and be equivalent in primary path the resonant element 141a that do not connect.

The selection switch 142b connects with the resonant element 141b, the preferred single-pole double-throw type of the selection switch 142b Switch, the selection switch mono- output end of 142b are connected to the resonant element 141b, and another output is connected to primary path. When the selection switch 142b is connected with the resonant element 141b, input the primary path signal will branch to it is described humorous Shake unit 141b, and the signal can should be the tunning effect hair of resonant element 141b after by resonant element 141b Raw corresponding adjustment, to meet communication requirement；When some described selection switch 142b is connected to primary path, the output master The signal of access, which will not be split to the resonant element 141b, the resonant element 141b, does not have signal to pass through, the resonance list First 141b will not work, and be equivalent in primary path without parallel connection resonant element 141b.

Further, the resonant element includes the inductance and capacitor of serial or parallel connection, specifically, inductance and capacitor series connection Series resonant circuit is constituted, inductance and capacitor parallel connection constitute antiresonant circuit, and series resonant circuit and antiresonant circuit are all It can be used as the resonant element and participate in link tuning.Selectively, the resonant element 141a may include multiple series resonances Circuit and/or antiresonant circuit, the resonant element 141b also may include multiple series resonant circuits and/or parallel resonance Circuit, the circuit design between above each series resonant circuit or antiresonant circuit may be the same or different.

Link tuning 14 one side of system can be connected and institute in parallel by presetting on primary path as a result, The number of resonant element is stated to realize tuning, on the other hand can also be switched by the selection come according to practical tuning needs come The number and type for adjusting the resonant element of the series connection and parallel connection that are finally connected with primary path further tune to realize, The implementation that the link tunes system 14 is versatile and flexible, and those skilled in the art can rationally be adjusted according to communication requirement It is whole.

According to above-mentioned described structure, the working principle of the full frequency band tuned antenna 1 specifically: first radiation Body 11, which is coupled as main radiator with second radiator 12, generates high-frequency resonant, and power end tunes system by the link 14, which are connected to the feeding point 111, returns to ground structure 13 by the grounding point 112 again to be formed into a loop, and thus generates Low-frequency resonant.The effect of high-frequency resonant caused by the full frequency band tuned antenna 1 and the effect of low-frequency resonant can be by the chains Road tuning system 14 optimizes adjustment.

Specifically, with reference to Fig. 3 and Fig. 4, when the full frequency band tuned antenna 1 is respectively at low frequency state and high frequency state, There is good return loss characteristic (see Fig. 3) in wider frequency range, and show the full range from experimental data verifying Section tuned antenna 1 has good efficiency in corresponding frequency band.In the present embodiment, under low frequency state, the link tunes system 14 include and the concatenated 0.5pF capacitor of primary path and the 15pF capacitor in parallel with primary path；Under high frequency state, link tuning System 14 includes and the concatenated 0.5pF capacitor of primary path.Further, which optimizes and revises to covering GPS When with frequency range corresponding to WiFi, good return loss characteristic (see Fig. 4) is also shown, shows the full frequency band tuned antenna 1 GPS and WiFi communication may be implemented.In the present embodiment, under the conditions of GPS, link tuning system 14 include with primary path simultaneously The 1.5pF capacitor of connection and with the concatenated 18nH inductance of primary path；Under the conditions of WiFi, the link tuning system 14 includes and master The 12nH inductance of path in parallel and with the concatenated 0.5pF capacitor of primary path.

The full frequency band tuned antenna 1 can satisfy the communications band demand of domestic 2G, 3G, i.e. 824-2170MHz as a result, It even can satisfy part LTE communication frequency range, and realize that communication is also accessible in GPS and WiFi frequency range.

The full frequency band tuned antenna 1 is suitably applied on miniature movable type communication terminal, to optimize full frequency band tuning The structure of antenna 1, compared with first radiator 11, second radiator 12 and ground structure 13 it is close to each other away from It can extend from second radiator 12 from the smaller or even described ground structure 13, the link tuning system 14 and feedback Electric network 15 is typically printed on circuit board, and is disposed adjacent to the position of second radiator 12.The full frequency band tune as a result, Humorous antenna 1 from institutional framework for mainly include two apart from relatively large part: a part be it is described first radiation Body 11, another part are to include second radiator 12, ground structure 13 and be printed with link tuning system 14 and feedback The circuit board of electric network 15, first radiator 11 are connect first by the coaxial cable 16 with the circuit board to realize Feed, first radiator 11 also by short-circuit structure connect with the junction of second radiator 12 and ground structure 13 with It is grounded.

The full frequency band tuned antenna 1 of above-mentioned optimization structure is preferably adapted for applying on smartwatch, below with smartwatch For, the structure and function of the full frequency band tuned antenna 1 are further described.

With reference to Fig. 5, smartwatch 2 of the invention includes main part 21 and the wearing portion from the main part 21 extension 22, each component of the full frequency band tuned antenna 1 is nested or is fused to the main part 21 and wearing portion of the smart antenna 2 In 22.

Specifically, the main part 21 includes bezel, cluster 211, is attached at four table ears at 211 edge of bezel, cluster (respectively First table ear 212a, the second table ear 212b, third table ear 212c and the 4th table ear 212d), lid close 211 end face of bezel, cluster table Face 213 and lid close the cover 214 in 211 bottom surface of bezel, cluster, and the bezel, cluster 211, surface 213 and cover 214 collectively define one A table chamber (not shown).The wearing portion 22 includes first connect respectively by four table ears with the bezel, cluster 211 Dress item 221 and the second wearing item 222, wherein first wearing article 221 passes through third table ear 212c and the 4th table ear 212d It is connect with the bezel, cluster 211, the second wearing item 222 passes through the first table ear 212a and the second table ear 212b and the table Frame 211 connects；The first wearing item 221 and second one end for not connect with the bezel, cluster 211 of wearing item 222 each other by Conventional hasp carries out detachable connection, to form the ring structure for weared on wrist.

With reference to Fig. 6, the first radiator 11 setting of the full frequency band tuned antenna 1 is on the first wearing item 221, institute It states bezel, cluster 211, the first table ear 212a, the wearing item 222 of the second table ear 212b and second and collectively forms the full frequency band tuned antenna 1 The second radiator 12 and ground structure 13, link tuning system 14 and feeding network 15 are printed on circuit board (not shown) It is upper and to be contained in the table intracavitary.

Further, the first wearing item 221 sets that there are two the connection positions that connects with the bezel, cluster 211: one connects Position is connect by the third table ear 212c with the bezel, cluster 211, another connection position passes through the 4th table ear 212d and institute State the connection of bezel, cluster 211.The both ends of the third table ear 212c are electrically connected with the first wearing item 221 and bezel, cluster 211 respectively, The 4th table ear 212b realizes first wearing article 221 with described comprising link tune by the built-in coaxial cable 16 The electric connection of the circuit board of humorous system 14 and feeding network 15.It follows that first wearing articles 221 is equivalent to described the One radiator 11, first wearing article 221 are equivalent to first radiator with the 4th table ear 212d connection position connecting 11 feeding point 111, the first wearing item 221 are equivalent to first radiation with the third table ear 212c connection position connecting The grounding point 112 of body 11.

Second wearing articles 222 also is provided with the connection position of two with the bezel, cluster 211: a connection position passes through described the One table ear 212a and the bezel, cluster 211 are electrically connected, another connection position passes through the second table ear 212b and the bezel, cluster 211 It is electrically connected.

Herein it should be further noted that " electric connection " described above is interpreted as connecing completely from physique It touches, gap is not present between two components to contact with each other.

By the above structure it is found that the first wearing item 221 is equivalent to first radiator 11, the third table ear 212c is equivalent to the short-circuit structure that first radiator 11 is grounded, and the 4th table ear 212d is equivalent to the coaxial cable 16 Support construction, the part bezel, cluster 211 between the third table ear 212c and the 4th table ear 212d be equivalent to it is described second radiation Body 12, the other parts of the bezel, cluster 211 and the first table ear 212a, the second table ear 212b and the second wearing item 222 are made jointly For the ground structure 13.First radiator, 11 one side is connect with the feeding network 15 electric current is supplied, another Aspect and the ground structure 13 are shorted, it is thus achieved that inverse F type antenna (IFA) structure, is advantageously implemented small size antenna.

Consider from the manufacture material of the smartwatch 2, due to first radiator 11 setting the table chamber it Outside, to the circuit board of script carrying radiator without Clearance requirement, thus it is big to the limitation of the design of the smartwatch 2 It is big to reduce, only require that the 4th table ear 212d is adopted and be made from an insulative material, with realize the 4th table ear 212d and bezel, cluster 211 it Between non-electric connection, the manufacture material of the external component of the smartwatch 2 is not limited strictly, in order to improve the intelligence hand The electric property of table 2, also for its structural reliability is promoted, also for the aesthetics and stylishness for improving its appearance, the table Frame 211, cover 214, the first table ear 212a, the second table ear 212b, third table ear 212c, the first wearing item 221 and the second wearing Item 222 can be all made of metal material, and all component or partial component are integrally formed.Selectively, the third table ear 212c, the first wearing item 221 and bezel, cluster 211 are integrally formed, alternatively, the bezel, cluster 211, the first table ear 212a, the second table ear The wearing item 222 of 212b and second is integrally formed, alternatively, the bezel, cluster 211 and cover 214 are integrally formed.

Further, due between first radiator 11 and the second radiator 12 coupling generate high-frequency resonant, this It is adjusted in addition to that can tune system 14 by the link in coupling amount between one radiator 11 and the second radiator 12 Outside, the adjusting of the physical distance between first radiator 11 and the second radiator 12 also may be implemented to tune, i.e., by reasonable The first wearing the distance between item 221 and bezel, cluster 211 in the smartwatch 2 is designed, or can be understood as the adjustment The length of the third table ear 212c and the 4th table ear 212d, may be implemented the adjustment of high-frequency resonant and bandwidth.As shown in fig. 7, Adjustable frequency range can be from 1.5GHz to 2.8GHz.

With reference to Fig. 8, if the smartwatch 2 is designed using all-metal, the galvanic areas on surface will be with the 4th table ear It is distributed centered on 212d, when the table ear is attached at close to the edge of 211 end face of bezel, cluster, the smartwatch 2 Surface current heavy current region close to the end face of the bezel, cluster 211, the separate cover 214 with human contact, a side The comfort level of the smartwatch 2 wearing can be improved in face, and manpower is avoided to receive the influence of heavy current, on the other hand can also be to avoid people Hand influences the radiance of the full frequency band tuned antenna 1, reduces radiation loss.

Those skilled in the art of the present technique are appreciated that " terminal " used herein above, " terminal device " both include wireless communication The equipment of number receiver, only has the equipment of the wireless signal receiver of non-emissive ability, and including receiving and emitting hardware Equipment, have on bidirectional communication link, can execute two-way communication reception and emit hardware equipment.This equipment It may include: honeycomb or other communication equipments, shown with single line display or multi-line display or without multi-line The honeycomb of device or other communication equipments；PCS (Personal Communications Service, PCS Personal Communications System), can With combine voice, data processing, fax and/or communication ability；PDA (Personal Digital Assistant, it is personal Digital assistants), it may include radio frequency receiver, pager, the Internet/intranet access, web browser, notepad, day It goes through and/or GPS (Global Positioning System, global positioning system) receiver；Conventional laptop and/or palm Type computer or other equipment, have and/or the conventional laptop including radio frequency receiver and/or palmtop computer or its His equipment." terminal " used herein above, " terminal device " can be it is portable, can transport, be mounted on the vehicles (aviation, Sea-freight and/or land) in, or be suitable for and/or be configured in local runtime, and/or with distribution form, operate in the earth And/or any other position operation in space." terminal " used herein above, " terminal device " can also be communication terminal, on Network termination, music/video playback terminal, such as can be PDA, MID (Mobile Internet Device, mobile Internet Equipment) and/or mobile phone with music/video playing function, it is also possible to the equipment such as smart television, set-top box.

The above is only some embodiments of the invention, it is noted that for the ordinary skill people of the art For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also answered It is considered as protection scope of the present invention.

Claims (16)

1. A full-band tuning antenna, characterized in that: it comprises a first radiator, a second radiator and a grounding structure extending from the second radiator; a feeder is provided near the second radiator network, one of the first radiator or the second radiator is connected to the feed network through a link tuning system, the other radiator is directly connected to the feed network, and the first radiator is connected to the ground The structures are connected by a shorting structure to realize grounding, and one end of the shorting structure is connected at the connection between the second radiator and the grounding structure. 2 . The full-band tuning antenna according to claim 1 , wherein the first radiator is provided with a feeding point, and the feeding point is connected to the link tuning system by a coaxial cable. 3 . 3. The full-band tuning antenna according to claim 1, wherein the link tuning system comprises a plurality of resonance units connected in series and in parallel. 4 . The full-band tuning antenna according to claim 3 , wherein the link tuning system further comprises a plurality of selection switches for selectively connecting the resonance unit to the link tuning system. 5 . 5 . The full-band tuning antenna according to claim 3 , wherein each of the resonant units comprises an inductor and a capacitor connected in parallel or in series with each other. 6 . 6. The full-band tuning antenna according to claim 1, wherein the link tuning system and the feeding network are printed on a circuit board. 7 . The full-band tuning antenna according to claim 1 , wherein the second radiator, the grounding structure and the shorting structure are integrally formed. 8 . 8 . A smart watch, comprising a main body part and a wearing part extending from the main body part, characterized in that it further comprises the full-band tuning antenna according to any one of claims 1 to 7 . 9 . The smart watch of claim 8 , wherein the main body portion comprises a watch frame, a watch lug attached to the edge of the watch frame, a surface covered on an end face of the watch frame, and a surface covered on the watch frame. 10 . The watch cover on the bottom surface of the frame; the wearing part includes a first wearing strip and a second wearing strip respectively connected to the watch frame through the watch lugs; the first radiator of the full-band tuning antenna is arranged on the second On a wearing strip, the second radiator is arranged on the watch frame, the grounding structure is arranged on the watch frame and the second wearing strip, and the feeding network and the link tuning system are accommodated in the watch frame and the link tuning system. Inside the watch cavity defined by the bezel, the face and the watch cover. 10 . The smart watch according to claim 9 , wherein the watch lugs at least include a third watch lug and a fourth watch lug for connecting the first wearing strip, and the fourth watch lug is connected to the The watch frames are connected by insulating materials, and the third watch lugs are respectively electrically connected with the first wearing strip and the watch frame. 11 . The smart watch of claim 10 , wherein the third lug, the first wearing strip and the watch frame are integrally formed. 12 . 12 . The smart watch of claim 10 , wherein the watch lugs further comprise first and second watch lugs for realizing electrical connection between the watch frame and the second wearing strip. 13 . 13. The smart watch of claim 12, wherein the bezel, the second wearing strip, the first lugs and the second lugs are integrally formed. 14. The smart watch of claim 13, wherein the watch frame, the first wearing strip, the second wearing strip, the first lugs, the second lugs and the third lugs are respectively made of metal materials to make. 15. The smart watch according to claim 14, wherein: the watch cover is made of a metal material; the watch frame and the watch cover are integrally formed. 16. The smart watch of claim 9, wherein the lugs are attached near the edge of the end face of the bezel.