CN210006897U

CN210006897U - Single-frequency IFA antenna

Info

Publication number: CN210006897U
Application number: CN201921119067.1U
Authority: CN
Inventors: 吴隆谊
Original assignee: Beijing QIYI Century Science and Technology Co Ltd
Current assignee: Beijing QIYI Century Science and Technology Co Ltd
Priority date: 2019-07-16
Filing date: 2019-07-16
Publication date: 2020-01-31
Anticipated expiration: 2029-07-16

Abstract

The utility model provides an single-frequency IFA antenna, this antenna includes the antenna main part that extends along plane and second plane mutually perpendicular, from feed pin and the solid fixed pin of antenna main part along the extension of third plane, feed pin and solid fixed pin are parallel, the third plane is perpendicular with plane and second plane, from the position that the antenna main part extends at plane along the ground pin of fourth plane extension, the fourth plane is perpendicular and parallel with the second plane with the plane, feed pin, solid fixed pin and ground pin all cladding have the welded layer, can weld on the printed circuit board through the welded layer.

Description

Single-frequency IFA antenna

Technical Field

The utility model relates to a wireless network technology field especially relates to kind single-frequency IFA antennas.

Background

The IFA Antenna has the advantages of low profile, small volume, high efficiency, sufficient bandwidth and strong anti-interference capability of the PIFA Antenna, so the IFA Antenna is particularly suitable for various miniaturized and ultrathin mobile communication terminals.

Therefore, it is an urgent technical problem to be solved by those skilled in the art to provide IFA antennas capable of reducing assembly steps and saving production cost.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model provides an kind single-frequency IFA antennas satisfy the bluetooth and to the receiving and dispatching requirement of radio frequency signal.

In order to achieve the above object, the embodiment of the present invention provides the following technical solutions:

A single frequency IFA antenna, comprising:

an antenna body extending along an th plane and a second plane perpendicular to each other;

a feed pin and a anchor pin extending from the antenna body along a third plane, the feed pin being parallel to the anchor pin, the third plane being perpendicular to the th plane and the second plane;

a ground pin extending from the antenna body at a location extending in the th plane along a fourth plane that is perpendicular to the th plane and parallel to the second plane;

the feed pin, the fixed pin and the grounding pin are all coated with welding layers, and the feed pin, the fixed pin and the grounding pin can be welded on a printed circuit board through the welding layers.

The utility model discloses wherein embodiments, whole single-frequency IFA antenna is whole all to be wrapped up by the welded layer.

In embodiments of the present invention, the soldering layer is a tin-plated layer, a nickel-plated layer, or a copper-tin-plated layer.

The utility model discloses wherein embodiments, whole single-frequency IFA antenna is bent or the punching press by the sheetmetal and is formed, perhaps is formed by the processing of potsherd.

In the present invention, in embodiments, the antenna main body includes:

a routing area routed from the th plane to the second plane;

a second trace area electrically connected with the fixed pin from the trace area;

a third trace area electrically connected to the feed pin from the th trace area, and

a fourth trace area electrically connected to the ground pin from the th trace area.

The utility model discloses wherein embodiments, walk the regional being close to fourth walk the regional with the position that ground pin borders is provided with the stress and alleviates the breach.

The utility model discloses wherein embodiments, the second is walked the line region and is in the second plane with the region that the third plane is bordered is provided with dodges the breach.

In the utility model discloses wherein embodiments, the end of fixed pin is provided with the fixed pin shrink section that the width diminishes gradually.

In the utility model discloses wherein embodiments, the end of feed pin is provided with the feed pin shrink section that the width diminishes gradually.

In the utility model discloses wherein embodiments, the end of ground pin is provided with the ground pin shrink section that the width diminishes gradually.

In of the embodiments of the present invention,

the length of the antenna main body is 8.3mm, and the width of the antenna main body is 7.25 mm;

the width of the second wiring area is 3.25 mm;

the length of the fourth wiring area is 4.00 mm;

the height of the feed pin is 5.00mm, the thickness of the feed pin is 0.30mm, and the width of the feed pin is 2.25 mm;

the height of the fixed pin is 5.00mm, the thickness of the fixed pin is 0.30mm, and the width of the fixed pin is 2.00 mm;

the height of the grounding pin is 5.00mm, and the thickness of the grounding pin is 0.30 mm.

According to the above technical scheme, the utility model provides an kind of single-frequency IFA antennas, owing to there is the welding layer at the equal cladding of feed pin, fixed pin and ground connection pin, can weld on printed circuit board through this welding layer, consequently, compare with prior art, adopt the utility model discloses a when single-frequency IFA antenna is assembling printed circuit board, need not to consume extra coupling assembling, reduced coupling assembling's assembly link to manufacturing cost has been practiced thrift.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.

Fig. 1 shows a perspective view of a single-frequency IFA antenna;

FIG. 2 shows a schematic diagram of a single frequency IFA antenna in the o1-x1 line of sight direction;

FIG. 3 shows a schematic diagram of a single frequency IFA antenna in the z-o1 line of sight;

FIG. 4 shows a schematic diagram of a single frequency IFA antenna in the o1-z line of sight direction;

FIG. 5 shows a schematic diagram of a single frequency IFA antenna in a y-o line of sight;

FIG. 6 shows a schematic diagram of a single frequency IFA antenna in an o-y line of sight direction;

fig. 7 to 9 show schematic diagrams of specific dimensioning of a single-frequency IFA antenna;

fig. 10 shows a schematic view mounted on a printed circuit board.

In the illustration, 10 is a single frequency IFA antenna, 20 is a printed circuit board;

100 is an antenna body, 200 is a fixed pin, 300 is a feed pin, and 400 is a ground pin;

101 is an th routing area, 102 is a second routing area, 103 is a third routing area, 104 is a fourth routing area, 105 is a stress relief notch, and 106 is an avoidance notch;

101-a is a lateral side, 101-b is a bottom side, 101-c is a medial side, 101-d is a top side, 102-a is a lateral side, 102-b is a medial side, 103-a is a lateral side, 103-b is a medial side, and 104-a is a lateral side;

201-a is an outer side, 201-b is an inner side, 201-c is an inner surface, 201-d is an outer surface, 201-e is a bottom surface, and 201-f is a top surface;

301-a is an outer side, 301-b is an inner side, 301-c is an inner side, 301-d is an outer side, 301-e is a bottom, and 301-f is a top;

401-a is the outer side, 401-b is the inner side, 401-c is the inner surface, 401-d is the outer surface, 401-e is the bottom, 401-f is the top.

Detailed Description

The technical solution in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of , but not all embodiments.

In this application, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises an series of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

In the production process of the communication equipment, a printed circuit board of the communication equipment needs to be designed, and each electronic component in the printed circuit board has a reasonable installation position. An installer mounts electronic components such as an electronic chip, a connection port (e.g., USB), and other electronic components at the corresponding mounting positions according to the mounting positions. In addition, a clearance area is reserved in the printed circuit board as a mounting area of the antenna.

Referring to fig. 1 to 10, the structures of the single-frequency IFA antenna 10 specifically include an antenna body 100, a fixing pin 200, a feeding pin 300, and a grounding pin 400, wherein:

the antenna body 100 extends along a mutually perpendicular th plane y1-o1-z and a second plane x1-o1-y 1;

the anchor pin 200 and the feed pin 300 extend from the antenna body 100 along a third plane x1-o1-z, the anchor pin 200 being parallel to the feed pin 300, the third plane x1-o1-z being perpendicular to the plane y1-o1-z and the second plane x1-o1-y 1;

a ground pin 400 extending from the antenna body 100 at a location extending in a th plane y1-o1-z along a fourth plane x2-o2-y2, the fourth plane x2-o2-y2 being perpendicular to the th plane y1-o1-z and parallel to the second plane x1-o1-y 1;

the feed pin 300, the fixing pin 200, and the ground pin 400 are coated with a soldering layer through which soldering to a printed circuit board is possible.

Since the feeding pin 300, the fixing pin 200, and the ground pin 400 are coated with the soldering layer, the soldering to the printed circuit board 20 is enabled by the soldering layer. Therefore, compare with prior art, adopt the utility model discloses a single-frequency IFA antenna 10 need not to consume extra coupling assembling when assembling on printed circuit board 20, has reduced coupling assembling's assembly link to manufacturing cost has been practiced thrift.

In the illustration, there are two coordinate systems, x1-z-y1 and x2-z-y2 rectangular, wherein x1-z-y1 is translated in the o1-o2-z direction by a predetermined unit to obtain x2-z-y 2. The introduction of the coordinate system is only convenient for describing the position relationship and the connection relationship between the components, and has no limiting meaning per se.

The function of the above-mentioned solder layers is to form an effective electrical connection structure for soldering the feed pin 300, the fixing pin 200 and the ground pin 400 to the printed circuit 20. When the single-frequency IFA antenna is mounted on the printed circuit board 20, the single-frequency IFA antenna is electrically connected to a corresponding circuit on the printed circuit board mainly through the feed pin 300, the fixing pin 200, and the ground pin 400, and therefore, only the feed pin 300, the fixing pin 200, and the ground pin 400 are coated with the solder layer; or the entire single-frequency IFA antenna 10 may be entirely clad with a solder layer.

The soldering layer may be provided by, for example, plating, coating, 3D printing, or the like. The utility model discloses in this welding layer sets up through electroplating, the welding layer that corresponds is tin coating, nickel coating, copper-plated tin coating, selects corresponding electrolysis technology and electrolyte to setting up different welding layers.

Whole single-frequency IFA antenna 10 is buckled or the punching press is formed or ceramic machining forms by the sheetmetal, as long as can realize that the material of antenna function is all in the utility model discloses a within range. The utility model discloses single-frequency IFA antenna is processed to preferred selection steel sheet material, because the steel sheet has and gets the channel simple, and the steel sheet is cheap, has reduced manufacturing cost, still possess advantages such as workable and long service life.

The single frequency IFA antenna 10 is fixed on the Printed circuit board 20 by a soldering process, preferably, the soldering process selects to solder the single frequency IFA antenna 10 to a PCB (Printed circuit board) by SMT (Surface mount Technology), wherein each pin of the antenna has determined a specific mounting position when the PCB is generated, the designed feed pin 300 needs to be close to the radio frequency antenna, the feed pin 300 is connected with a signal pin of the radio frequency chip to prevent the feed pin 300 from being too long to trace the signal pin of the radio frequency chip and cause signal attenuation, the ground pin 400 is connected with a GND plane, and the fixing pin 200 is used to fix the antenna on the Printed circuit board to increase the stability of the antenna, wherein the single frequency IFA antenna 10 can also be connected to the Printed circuit board 20 by other soldering methods, which reduces the use of the connecting component, reduces the production cost, and the Printed circuit board 20 enables the single frequency IFA antenna 10 to be integrated with the Printed circuit board 20 for convenient management.

It should be noted that, the designer sets the size according to the reserved clearance area, and through reasonably designing the position of the feed point and the routing area corresponding to each pin, the antenna can satisfy the impedance matching of the input impedance and the output impedance, specifically, the distance of the routing area between the feed pin 300 and the ground pin 400 is designed, and the closer the distance is, the shorter the resonant wavelength is, and the distance has a reference value: 3.5-5 mm.

It should be noted that the present invention discloses a single-frequency IFA antenna 10, wherein the positional relationship and the connection relationship among the antenna body 100, the feeding pin 300, the fixing pin 200, and the grounding pin 400 are determined, and the single-frequency function of different sections can be realized by adjusting the size of each component. Specifically, an initial shape of the antenna is designed by using a copper foil, and based on the initial shape, the size and the length of each pin and each wire in the antenna are adjusted to obtain the length, the width and the height of each pin and each wire. The resonance frequency of the antenna after adjustment can meet the dual-frequency transceiving requirement. The adjusting process is to cut the pins of the antenna or the routing areas corresponding to the pins, or other adjusting manners, which are not described in detail herein.

For example, in embodiments of the present invention, the antenna body 100 includes a routing area 101 routed from the plane y1-o1-z to the second plane x1-o1-y1, a second routing area 102 electrically connected to the fixed pin 200 from the routing area 101, a third routing area 103 electrically connected to the feeding pin 300 from the routing area 101, and a fourth routing area 104 electrically connected to the ground pin 400 from the routing area 101.

The utility model discloses an excitation of single frequency can be realized to antenna main part 100 through the form of walking above adopting, of course antenna main part 100 walk the line form and not only have above form, as long as the line form of walking of the excitation that can realize the single frequency is all in the utility model discloses a protection range, wherein, the single frequency can be for 2.4G frequency or 5G frequency, certainly still can be for other frequency sections in the antenna field step, each corner still can adjust the size through setting up the chamfer, the chamfer radius is 0.40mm to 0.6mm, and is preferred, the chamfer radius is 0.40 mm.

On the premise of the above trace forms, in order to alleviate the stress deformation between the ground pin 400 and the antenna body 100, for the fatigue damage of the ground pin 400 or the antenna body 100, a stress alleviating notch 105 is provided at a position of the -th trace region 101, which is close to the junction between the fourth trace region 104 and the ground pin 400, preferably, the alleviating notch is in the shape of a circular arc, and an avoiding notch 106 is provided at a region of the second trace region 102, which is at the junction between the second plane x1-o1-y1 and the third plane x1-o1-z, so as to avoid the fixed pin 200 interfering with the part of the antenna body 100, which is located in the second plane x1-o1-y1 during the installation process.

For the convenience of soldering, the end of the fixing pin 200 is provided with a narrowing section of the fixing pin 200 having a gradually decreasing width. The end of the feed pin 300 is provided with a narrowing of the feed pin 300 having a gradually decreasing width. The end of the ground pin 400 is provided with a ground pin 400 constriction having a gradually decreasing width.

Taking the grounding pin 400 as an example, the contracting section comprises a th contracting section 402, a second contracting section 403 and a third contracting section 404, wherein the th contracting section 402 is connected from the main body 401 of the grounding pin 400 to the second contracting section 403, two side surfaces of the second contracting section 403 are parallel to each other, two side surfaces of the third contracting section 404 are inclined from the th contracting section 402 to the top surface of the corresponding pin, the th contracting section 402 has an arc-shaped structure, the arc radius range is 0.40mm to 0.6mm, and preferably, the arc radius is 0.50 mm.

The trace area 101 extends along a plane y1-o1-z and a second plane x1-o1-y1, wherein a portion of the trace area 101 extending along a plane y1-o1-z has an outer side 101-a, a bottom 101-b, an inner side 101-c, and a top 101-d, wherein the outer side 101-a and the inner side 101-c correspond to a length direction of the antenna body 100, and the bottom 101-b and the top 101-d correspond to a width direction of the antenna body 100.

The second trace area 102 has an outer side 102-a and an inner side 102-b, wherein the outer side 102-a and the inner side 102-b correspond to the width direction of the antenna body 100, the third trace area 103 has an outer side 103-a and an inner side 103-b, wherein the outer side 103-a and the inner side 103-b correspond to the width direction of the antenna body 100, and the fourth trace area 104 and the outer side 101-a of the -th trace area 101 are located on the same side and have an outer side 104-a.

The surface of the fixing pin 200 close to the outer side surface 102-a of the second trace area 102 is an outer side surface 201-a, the surface corresponding to the outer side surface 201-a is an inner side surface 201-b, the surface located at the inner side is an inner surface 201-c, the surface located at the outer side is an outer surface 201-d, the surface located at the bottom end is 201-e, and the surface located at the top end is a top surface 201-f.

The surface of the feed pin 300 close to the outer side surface 103-a of the third trace area 103 is an outer side surface 301-a, the surface corresponding to the outer side surface 301-a is an inner side surface 301-b, the surface of the feed pin 300 located at the inner side is an inner surface 301-c, the surface located at the outer side is an outer surface 301-d, the surface located at the bottom end is 301-e, and the surface located at the top end is a top surface 301-f.

The surface of the ground pin 400 close to the outer bottom surface 101-b of the fourth trace area 101 is an outer side surface 401-a, the surface corresponding to the outer side surface 401-a is an inner side surface 401-b, the surface of the ground pin 400 corresponding to the second outer side surface 101-c of the trace area 101 is an inner surface 401-c, the surface opposite to the inner surface 401-c is an outer surface 401-d, the surface at the bottom end is 401-e, and the surface at the top end is a top surface 401-f.

In the embodiment of the present invention, the length of the antenna main body 100 is 8.3mm, and the width is 7.25 mm;

the distance b1 between the top surface 101-b of the th trace area 101 and the bottom surface 101-c of the th trace area 101 corresponds to the length of the antenna body 100, the distance a1 between the outer side surface 104-a of the fourth trace area 104 and the outer surface 201-d of the feeding pin 300 (fixing pin 200) corresponds to the width of the antenna body 100, the width d1 of the second trace area 102 is 3.25mm, and the length d2 of the fourth trace area 104 is 4.00 mm.

The height of the fixed pin 200 is 5.00mm, the width is 2.00mm, and the thickness is 0.30 mm; wherein, the distance a2 between the bottom surface 301-e of the fixing pin 200 and the top surface 301-f of the fixing pin 200 corresponds to the height of the fixing pin 200; the distance b2 between the outer side surface 301-a of the fixing pin 200 and the inner side surface 301-b of the fixing pin 200 corresponds to the width of the fixing pin 200; the distance c2 between the inner surface 301-c of the anchor pin 200 and the outer surface 301-d of the anchor pin 200 corresponds to the thickness of the anchor pin 200; when the fixing pin 200 is disposed with the shrinking section of the fixing pin 200, the height of the body of the fixing pin 200 is 4mm, wherein the height of the body of the fixing pin 200 is the distance from the bottom surface 301-e of the fixing pin 200 to the junction of the body of the fixing pin 200 and the shrinking section of the fixing pin 200.

The height of the feed pin 300 is 5.00mm, the width is 2.25mm, and the thickness is 0.30 mm; wherein the distance a3 between the bottom surface 201-e of the feed pin 300 and the top surface 201-f of the feed pin 300 corresponds to the height of the feed pin 300; the distance b3 between outer side 201-a of feed pin 300 and inner side 201-b of feed pin 300 corresponds to the width of feed pin 300; the distance c3 between the inner surface 201-c of the feed pin 300 and the outer surface 201-d of the feed pin 300 corresponds to the thickness of the feed pin 300; when the power feed pin 300 is provided with the contracted portion of the power feed pin 300, the height of the main body of the power feed pin 300 is 4mm, wherein the height of the main body of the power feed pin 300 is the distance from the bottom surface 201-e of the power feed pin 300 to the intersection of the main body of the power feed pin 300 and the contracted portion of the power feed pin 300.

The height of the grounding pin 400 is 5.00mm, the width is 2.00mm, and the thickness is 0.30 mm; wherein, the distance a4 between the bottom surface 401-e of the ground pin 400 and the top surface 401-f of the ground pin 400 corresponds to the height of the ground pin 400; the distance b4 between the outer side 401-a of the ground pin 400 and the inner side 401-b of the ground pin 400 corresponds to the width of the ground pin 400; the distance c4 between the inner surface 401-c of the ground pin 400 and the outer surface 401-d of the ground pin 400 corresponds to the thickness of the ground pin 400; when the ground pin 400 is provided with the ground pin 400 contraction section, the height of the body 401 of the ground pin 400 is 4mm, wherein the height of the body 401 of the ground pin 400 is the distance from the bottom surface 401-e of the ground pin 400 to the junction of the body of the ground pin 400 and the ground pin 400 contraction section.

The antenna is a specific size antenna arranged according to a reserved clearance area of the communication device, and can provide Bluetooth module broadcasting and receiving of 2.4G frequency points for the communication device.

The system and system embodiments described above are merely illustrative, wherein elements described as separate components may or may not be physically separate, and wherein components shown as elements may or may not be physical elements, i.e., may be located in places, or may be distributed over a plurality of network elements.

further appreciate that the various illustrative components and algorithm steps described in connection with the embodiments disclosed herein can be implemented as electronic hardware, computer software, or combinations of both, and that the various illustrative components and steps have been described above generally in terms of functionality for clarity of explanation of interchangeability of hardware and software.

Various modifications to these embodiments will be readily apparent to those skilled in the art, and the -like principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention.

Claims

1, kinds of single frequency IFA antenna, characterized by, include:

2. A single frequency IFA antenna according to claim 1 wherein the entirety of the single frequency IFA antenna is clad with a solder layer.

3. The single frequency IFA antenna of claim 2, wherein the solder layer is a tin plated layer, a nickel plated layer, a copper tin plated layer.

4. A single-frequency IFA antenna according to claim 1, wherein the entire single-frequency IFA antenna is bent or stamped from a sheet of metal, or machined from a sheet of ceramic.

5. The single frequency IFA antenna of any of claims 1 to 4, wherein the antenna body comprises:

a routing area routed from the th plane to the second plane;

6. The single-frequency IFA antenna of claim 5, wherein the trace area is provided with a stress relief notch at a location near the interface of the fourth trace area and the ground pin.

7. The single-frequency IFA antenna of claim 5, wherein the second trace area is provided with an avoidance gap at the interface of the second plane and the third plane.

8. A single-frequency IFA antenna according to claim 5, wherein the distal end of the fixing pin is provided with a narrowing fixing pin section of gradually decreasing width.

9. Single frequency IFA antenna according to claim 5, wherein the end of the feed pin is provided with a narrowing of the feed pin that tapers in width.

10. The single-frequency IFA antenna of claim 5, wherein the end of the ground pin is provided with a ground pin constriction of gradually decreasing width.

11. Single frequency IFA antenna according to claim 5,

the length of the antenna main body is 8.3mm, and the width of the antenna main body is 7.25 mm; the width of the second wiring area is 3.25 mm; the length of the fourth wiring area is 4.00 mm;