CN207124282U - A kind of application structure of built-in FM antennas on mobile terminals - Google Patents

A kind of application structure of built-in FM antennas on mobile terminals Download PDF

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Publication number
CN207124282U
CN207124282U CN201720344590.9U CN201720344590U CN207124282U CN 207124282 U CN207124282 U CN 207124282U CN 201720344590 U CN201720344590 U CN 201720344590U CN 207124282 U CN207124282 U CN 207124282U
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China
Prior art keywords
antennas
built
application
mobile terminals
mobile terminal
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CN201720344590.9U
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Chinese (zh)
Inventor
刘源
杨开月
唐龙
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Hebang Electronic (suzhou) Co Ltd
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Hebang Electronic (suzhou) Co Ltd
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Abstract

The utility model discloses a kind of built-in FM antennas, belong to antenna technical field.The built-in FM antennas, applied to mobile terminal, built-in FM antennas use PCB forms or SMT forms.Because built-in FM antennas use PCB forms or SMT forms, and the FM antennas of PCB forms, the FM antennas of SMT forms space-consuming inside mobile terminal are smaller, and it is easy for installation, cost is relatively low, therefore the built-in FM antennas that the utility model embodiment provides are while FM radio functions are met, the space in the mobile terminal of occupancy can be saved, and there is easy for installation, lower-cost feature.

Description

A kind of application structure of built-in FM antennas on mobile terminals
Technical field
It the utility model is related to antenna technical field, the application knot of more particularly to a kind of built-in FM antennas on mobile terminals Structure.
Background technology
Use of FM (frequency modulation) radio functions in many portable type electronic products is non- It is often universal, become audio frequency and video and the standard configuration function of communication product.Civilian FM frequency ranges are 76MHz-108MHz, and wavelength is most 3 meters are about, corresponding about 1 meter of reception antenna size, the built-in FM antennas of early stage use external mostly, as Telescopic metal is drawn Spike antenna, helical antenna, earphone cord etc., but due to installing and using and carrying inconvenience, be progressively built antenna and substituted.
With the vdiverse in function and miniaturization of the portable type electronic product such as integrated level more and more higher, mobile phone of chip, mobile phone Needed in limited space integrate multiple antennas, if realize effectively receive and send, it is necessary to the size of built-in FM antennas very Greatly, it is larger to built-in FM antennas space requirement, and be difficult at present to design in preferable performance in limited spatial dimension Put FM antennas.
Utility model content
In order to solve the problems of above-mentioned prior art, the utility model embodiment provides a kind of built-in FM days The application structure of line on mobile terminals, the sky in mobile terminal that can save occupancy while FM radio functions are met Between.The technical scheme is as follows:
First aspect, there is provided a kind of application structure of built-in FM antennas on mobile terminals, applied to mobile terminal, institute State built-in FM antennas and use PCB forms or SMT forms.
With reference in a first aspect, in the first possible implementation, the shell of the mobile terminal is provided with neck, uses The built-in FM antenna sides of PCB forms are placed in the neck and parallel and near in a side of the mobile terminal.
With reference in a first aspect, in second of possible implementation, the both ends of the built-in FM antennas are respectively equipped with weldering Disk, the built-in FM antennas are connected by the circuit main board of the feeder line and the mobile terminal that are soldered on one of them described pad Connect.
It is described built-in in the third possible implementation with reference to second of possible implementation of first aspect Matching device is additionally provided between FM antennas and the circuit main board, the matching device includes inductance.
With reference to the third possible implementation of first aspect, in the 4th kind of possible implementation, the inductance For 300nH ± 50nH.
It is described built-in in the 5th kind of possible implementation with reference to second of possible implementation of first aspect FM antennas also include extension line, and one end of the extension line is soldered to another pad, and the other end of the extension line is opened Put setting.
With reference in a first aspect, in the 6th kind of possible implementation, the built-in FM antennas reserve clearance zone.
With reference to the 6th kind of possible implementation of first aspect, in the 7th kind of possible implementation, the headroom Area is arranged at least avris in the upsides of the built-in FM antennas, downside, left side, right side.
With reference in a first aspect, in the 8th kind of possible implementation, the built-in FM antennas with the mobile terminal The distances of other antenna radiation units be more than 5mm.
With reference to the 8th kind of possible implementation of first aspect to first aspect, in the 9th kind of possible implementation In, the size of the built-in FM antennas is 25*5*0.8mm3
The beneficial effect brought of technical scheme that the utility model embodiment provides is:
Because built-in FM antennas use PCB forms or SMT forms, and the FM antennas of the FM antennas of PCB forms, SMT forms Space-consuming is smaller inside mobile terminal, and it is easy for installation, cost is relatively low, therefore the utility model embodiment provide it is built-in FM antennas can save the space in the mobile terminal of occupancy while FM radio functions are met, and with it is easy for installation, Lower-cost feature.
Brief description of the drawings
, below will be to needed for embodiment description in order to illustrate more clearly of the technical scheme in the embodiment of the utility model The accompanying drawing to be used is briefly described, it should be apparent that, drawings in the following description are only some realities of the present utility model Example is applied, for those of ordinary skill in the art, on the premise of not paying creative work, can also be according to these accompanying drawings Obtain other accompanying drawings.
Fig. 1 is the built-in FM antennas dimensional structure diagram using PCB forms that the utility model embodiment provides;
Fig. 2 is the built-in FM antennas dimensional structure diagram using SMT forms that the utility model embodiment provides;
Fig. 3 is the overlooking the structure diagram for the built-in FM antennas that the utility model embodiment provides;
Fig. 4 is the overlooking the structure diagram for the built-in FM antennas that the utility model embodiment provides;
Fig. 5 is the dimensional structure schematic diagram for the built-in FM antennas that the utility model embodiment provides.
Embodiment
Embodiment of the present utility model is described below in detail, the example of embodiment is shown in the drawings, wherein from beginning to end Same or similar label represents same or similar element or the element with same or like function.Below with reference to attached The embodiment of figure description is exemplary, is only used for explaining the utility model, and it is not intended that to limitation of the present utility model.
In description of the present utility model, it is to be understood that term " " center ", " longitudinal direction ", " transverse direction ", " on ", " under ", The orientation or position relationship of the instruction such as "front", "rear", "left", "right", " vertical ", " level ", " top ", " bottom ", " interior ", " outer " are Based on orientation shown in the drawings or position relationship, it is for only for ease of description the utility model and simplifies description, rather than instruction Or imply that signified device or element must have specific orientation, with specific azimuth configuration and operation, therefore be not understood that For to limitation of the present utility model.In addition, term " first ", " second " be only used for describe purpose, and it is not intended that instruction or Imply relative importance or the implicit quantity for indicating indicated technical characteristic.Thus, " first ", the spy of " second " are defined Sign can be expressed or implicitly include one or more this feature.In description of the present utility model, unless otherwise saying Bright, " multiple " are meant that two or more.
, it is necessary to which explanation, unless otherwise clearly defined and limited, term " are pacified in description of the present utility model Dress ", " connected ", " connection " should be interpreted broadly, for example, it may be fixedly connected or be detachably connected, or integratedly Connection;Can be mechanical connection or electrical connection;Can be joined directly together, can also be indirectly connected by intermediary, It can be the connection of two element internals.For the ordinary skill in the art, above-mentioned art can be understood with concrete condition Concrete meaning of the language in the utility model.
The utility model embodiment provides a kind of application structure of built-in FM antennas on mobile terminals, and this is built-in FM days Line uses PCB forms or SMT forms, can apply in the mobile terminals such as mobile phone, to meet the FM radio work(of mobile terminal Can, while the space in the mobile terminal of occupancy can be saved, and there is easy for installation, lower-cost feature.
The built-in FM antennas, applied to mobile terminal, built-in FM antennas use PCB forms or SMT forms.Wherein, the shifting Dynamic terminal can be other mobile terminals outside mobile phone, such as personal digital assistant, and tablet PC, game console can Wearable device etc.;Wherein, the flat shape of the built-in FM antennas is rectangular.
Shown in reference picture 1, Fig. 1 is the solid for the built-in FM antennas using PCB forms that the utility model embodiment provides Structural representation, this is located in mobile terminal 20 using the built-in FM antennas 10 of PCB forms, wherein, mobile terminal 20 includes outer Shell 21, shell 21 are provided with neck 211, and the built-in side of FM antennas 10 is placed in neck 211 and parallel and near in mobile terminal 20 One side.Wherein, neck 211 is a side of the clamp and the mobile terminal 20 parallel to the clamp that are set in shell 21 Formed, close to the length of built-in FM antennas, built-in FM antennas 10 are fixed in neck 211 for the length of neck 211.
Shown in reference picture 2, Fig. 2 is the solid for the built-in FM antennas using SMT forms that the utility model embodiment provides Structural representation, this is placed directly against on the circuit main board 22 in mobile terminal 20 using the built-in FM antennas 10 of PCB forms, its In, the circuit main board 22 is printed circuit mainboard, and the position that can weld built-in FM antennas is reserved on circuit main board 22.
In the present embodiment, because built-in FM antennas use PCB forms or SMT forms, and the FM antennas of PCB forms, SMT shapes The FM antennas of formula space-consuming inside mobile terminal is smaller and easy for installation, cost is relatively low, therefore the utility model embodiment The built-in FM antennas provided are while FM radio functions are met, the space in mobile terminal that can take, and with peace Fill convenient, lower-cost feature.
Further, the both ends of built-in FM antennas 10 are respectively equipped with pad 11, and built-in FM antennas 10 are by being soldered to wherein Feeder line 30 on one pad 11 is connected with the circuit main board 22 of mobile terminal 20.
Shown in reference picture 3, Fig. 3 is the overlooking the structure diagram for the built-in FM antennas that the utility model embodiment provides, with The feeder line 30 that circuit main board 22 connects is soldered on a pad 11 of circuit main board 22;Circuit main board 22 includes FM cores Piece 221, built-in FM antennas 10 are connected by feeder line 30 with the FM chips 221 on circuit main board 22, wherein, the feeder line 30 is selected Relatively thin softer material, puts, the length of feeder line 30 can adjust as needed in order to bend.
In the present embodiment, the RF signals that built-in FM antennas receive are transmitted to circuit main board by feeder line, electricity can be made RF Signal Regulations are reduced into sound by FM chips on the mainboard of road into after FM FM signals, then by the loudspeaker of mobile terminal, with Realize the FM radio functions of mobile terminal.
Further, shown in reference picture 3, it is additionally provided between built-in FM antennas 10 and circuit main board 22 and matches device 40, Include inductance with device 40, wherein, the matching device is used to form π type match circuits.The inductance is connected on interior by feeder line 30 Put between FM antennas and circuit main board 22.Preferably, inductance is 300nH ± 50nH, in actual applications, can use inductance value For 300nH big inductance.
In the present embodiment, device is matched by being set between built-in FM antennas and circuit main board, by matching device shape Into π type match circuits, impedance matching between the circuit main board thus, it is possible to cause built-in FM antennas and mobile terminal.
It should be noted that the matching device is not limited to an inductance using series connection, in other embodiments, also Can will match device and be arranged to an electric capacity of series connection, with enable to the circuit main board of built-in FM antennas and mobile terminal it Between impedance matching.It is of course also possible to change the quantity of matching device as needed, such as, can will match device as parallel connection Two inductance or parallel connection two electric capacity.The utility model is not limited specifically with quantity the type of specific matching device It is fixed.
Further, shown in reference picture 4, Fig. 4 is the plan structure for the built-in FM antennas that the utility model embodiment provides Schematic diagram, built-in FM antennas 10 also include extension line 50, and one end of extension line 50 is soldered to another pad 11, extension line 50 The other end, which opens, to be set.
Wherein, extension line 50 can form more broken line coilings, wind or be not wrapped on built-in FM antennas 10, extension line It is the preferable metal material of electric conductivity that 50 material, which can be used with the identical material of feeder line 30, the material, for example, copper, aluminium, The materials such as silver, in actual applications, the material of extension line 50 can use copper cash, to reduce cost.
,, can by the extension line by being equipped with the extension line with open end on built-in FM antennas in the present embodiment Further to increase the electrical length of antenna, while the volume of antenna is diminished, thus further moved shared by saving The inner space of terminal;In addition, it can further strengthen the ability of built-in FM antenna reception signals by extension line.
It should be noted that built-in FM antennas not necessarily include extension line, but according to being actually needed, optionally add If the extension line, such as when built-in FM antennas are arranged in different mobile terminals, it is understood that there may be built-in FM antennas receive The poor situation of the ability of signal, it is possible thereby to there is the extension line at exploitation end by adding one in built-in FM antennas, to enter one The ability of FM antenna reception signals built in step reinforcement.
Further, built-in FM antennas 10 reserve clearance zone.Preferably, clearance zone be arranged at built-in FM antennas upside, An at least avris in downside, left side, right side.Wherein, the scope of clearance zone is the region of 2~3mm of FM antennas built in distance.Should Clearance zone refers to around built-in FM antennas and vertical plane must not have any device and ground wire.
In the present embodiment, by reserving clearance zone in built-in FM antennas, to avoid having influence on built-in FM antenna reception signals Ability, disclosure satisfy that FM radio functions so as to further ensure built-in FM antennas.
Further, the distance of built-in FM antennas 10 and other antenna radiation units in mobile terminal 20 is more than 5mm, by This can be avoided the signal between other antenna radiation units in built-in FM antennas and mobile terminal 20 from producing crosstalk, to influence To the ability of built-in FM antennas reception signal, so as to further ensure the FM radio reception that built-in FM antennas disclosure satisfy that mobile terminal Machine function.
Further, the size of built-in FM antennas 10 is 25*5*0.8mm3, shown in reference picture 5, Fig. 5 is the utility model The dimensional structure schematic diagram for the built-in FM antennas that embodiment provides, wherein, the length a scopes of built-in FM antennas 10 for 25.1mm ± 0.3mm, width b scope are 5.1mm ± 0.3mm, and thickness c scopes are 0.8mm ± 0.2mm, and the width range d of pad 11 is 0.8mm±0.25mm.Because the size of built-in FM antennas 10 is 25*5*0.8mm3, the small volume, thus by built-in FM antennas It is placed in mobile terminal, can at utmost saves the space of shared mobile terminal, and is easily installed conveniently.
The application structure of a kind of built-in FM antennas that the utility model embodiment provides on mobile terminals, due to built-in FM Antenna uses PCB forms or SMT forms, and the FM antennas of the FM antennas of PCB forms, SMT forms take inside mobile terminal Space is smaller, and it is easy for installation, cost is relatively low, therefore the utility model embodiment provide built-in FM antennas meeting FM radio reception While machine function, the space in the mobile terminal of occupancy can be saved, and there is easy for installation, lower-cost feature.
Above-mentioned all optional technical schemes, alternative embodiment of the present utility model can be formed using any combination, herein No longer repeat one by one.
Preferred embodiment of the present utility model is these are only, it is all in the utility model not to limit the utility model Spirit and principle within, any modification, equivalent substitution and improvements made etc., should be included in protection model of the present utility model Within enclosing.

Claims (8)

  1. A kind of 1. application structure of built-in FM antennas on mobile terminals, it is characterised in that
    The both ends of the built-in FM antennas are respectively equipped with pad, and the built-in FM antennas are by being soldered to one of them described pad On feeder line be connected with the circuit main board of the mobile terminal;
    The built-in FM antennas also include extension line, and one end of the extension line is soldered to another pad, the extension The other end of line, which opens, to be set;
    The built-in FM antennas use PCB forms or SMT forms.
  2. 2. the application structure of built-in FM antennas according to claim 1 on mobile terminals, it is characterised in that the movement The shell of terminal is provided with neck, is placed on using the built-in FM antenna sides of PCB forms in the neck and parallel and near in institute State a side of mobile terminal.
  3. 3. the application structure of built-in FM antennas according to claim 1 on mobile terminals, it is characterised in that described built-in Matching device is additionally provided between FM antennas and the circuit main board, the matching device includes inductance.
  4. 4. the application structure of built-in FM antennas according to claim 3 on mobile terminals, it is characterised in that the inductance For 300nH ± 50nH.
  5. 5. the application structure of built-in FM antennas according to claim 1 on mobile terminals, it is characterised in that described built-in FM antennas reserve clearance zone.
  6. 6. the application structure of built-in FM antennas according to claim 5 on mobile terminals, it is characterised in that the headroom Area is arranged at least avris in the upsides of the built-in FM antennas, downside, left side, right side.
  7. 7. the application structure of built-in FM antennas according to claim 1 on mobile terminals, it is characterised in that described built-in The distance of FM antennas and other antenna radiation units in addition to the built-in FM antennas in the mobile terminal is more than 5mm.
  8. 8. the application structure of built-in FM antennas on mobile terminals according to any one of claim 1~7, its feature exist In the size of the built-in FM antennas is 25*5*0.8mm3
CN201720344590.9U 2017-04-01 2017-04-01 A kind of application structure of built-in FM antennas on mobile terminals Active CN207124282U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201720344590.9U CN207124282U (en) 2017-04-01 2017-04-01 A kind of application structure of built-in FM antennas on mobile terminals

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201720344590.9U CN207124282U (en) 2017-04-01 2017-04-01 A kind of application structure of built-in FM antennas on mobile terminals

Publications (1)

Publication Number Publication Date
CN207124282U true CN207124282U (en) 2018-03-20

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CN201720344590.9U Active CN207124282U (en) 2017-04-01 2017-04-01 A kind of application structure of built-in FM antennas on mobile terminals

Country Status (1)

Country Link
CN (1) CN207124282U (en)

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