CN215418563U - Adjustable length antenna device and electronic equipment - Google Patents

Abstract

The utility model provides an antenna device with adjustable length and electronic equipment, and relates to the technical field of antennas. The adjustable length antenna device includes: the antenna comprises a printed circuit board and an antenna body arranged on the printed circuit board, wherein a preset gap is formed in the broken line part of the antenna body. In this scheme, set up one through the broken line part at antenna main part and preset the breach to through the disconnection or the connection status of presetting breach department, with the line length of walking of realization regulation antenna main part, and then realize adjusting resonant frequency's purpose, avoided because wireless communication agreement changes the version, the troublesome problem such as redesign antenna, the board verification of beating again that causes has effectively saved cost such as manpower, material resources.

Description

Adjustable length antenna device and electronic equipment

Technical Field

The utility model relates to the technical field of antennas, in particular to an antenna device with adjustable length and electronic equipment.

Background

At present, most electronic products "change" the wireless protocol often, for example, after designing a product of a Digital Enhanced Cordless Telecommunications (DECT) microphone, a derivative of the DECT microphone is designed by connecting: bluetooth wheat, Wireless-Fidelity (WiFi for short) wheat of other protocols, etc., but the Wireless protocol frequency band (about 1.9 GHz) and the Bluetooth protocol frequency band (2.4GHz) of DECT wheat are different, and the sizes required by the antennas of different frequency bands are different. However, since protocols in different frequency bands are not compatible with each other, for example, the wireless protocol of DECT mobile phone needs to filter interference of 2.4GHz frequency. If a dual-frequency antenna of 1.9GHz and 2.4GHz is designed for convenience, the antenna can absorb signals of 2.4GHz, which causes interference to chips in electronic equipment, so that only a single-frequency antenna can be designed.

However, with the existing antenna design scheme, the version of the wireless protocol is changed, which may result in that the antenna device in the previous frequency band cannot be used continuously, that is, the shape of the antenna needs to be redesigned, and the edition proofing and verification needs to be performed again, thereby resulting in that the development time of the antenna is too long and the cost is increased.

SUMMERY OF THE UTILITY MODEL

The present invention is directed to provide an antenna device with adjustable length and an electronic device, so as to solve the problems in the prior art that when a wireless protocol is changed for one version, the shape of the antenna needs to be redesigned, and the edition proofing and verification needs to be performed again, which further results in an excessively long development time of the antenna and an increase in cost.

In order to achieve the above purpose, the embodiment of the present invention adopts the following technical solutions:

in a first aspect, an embodiment of the present invention provides an antenna apparatus with an adjustable length, including: the antenna comprises a printed circuit board and an antenna body arranged on the printed circuit board, wherein a preset notch is formed in the broken line part of the antenna body.

Optionally, an adjustable device is arranged at the preset notch.

Optionally, the adjustable device comprises: zero ohm resistance.

Optionally, the preset notch further includes: and the reserved welding disc is welded with the zero-ohm resistor in a matched mode.

Optionally, when the preset notch is short-circuited by welding of an adjustable device, the length of the antenna main body is 31mm, and the adjustable frequency of the antenna device is 2.4-2.5 GHz.

Optionally, when the preset notch is broken, the length of the antenna main body is 39mm, and the adjustable frequency of the antenna device is 1.88-1.93 GHz.

Optionally, the antenna body is an inverted F antenna.

Optionally, the fold portion is an extension region of the antenna body and has a shape of a square.

In a second aspect, an embodiment of the present invention further provides an electronic device, including: the adjustable length antenna apparatus provided by the first aspect above.

The utility model has the beneficial effects that:

the embodiment of the application provides an adjustable length antenna device and electronic equipment, include: the antenna comprises a printed circuit board and an antenna body arranged on the printed circuit board, wherein a preset gap is formed in the broken line part of the antenna body. In this scheme, set up one through the broken line part at antenna main part and preset the breach, can predetermine the disconnection or the connection status of breach department through the change to realize adjusting antenna main part's line length of walking, and then realize adjusting resonant frequency's purpose, avoided because wireless communication agreement changes the edition, the troublesome problems such as redesign antenna, reprint board verification that cause have effectively saved cost such as manpower, material resources.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a schematic structural diagram of an antenna device provided in the prior art;

fig. 2 is a schematic structural diagram of an antenna apparatus with adjustable length according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram of an antenna apparatus with adjustable length according to another embodiment of the present invention;

fig. 4 is a schematic structural diagram of an antenna apparatus with adjustable length according to another embodiment of the present invention;

fig. 5 is a schematic structural diagram of an electronic device according to an embodiment of the present invention.

Icon: 100-adjustable length antenna means; 101-a printed circuit board; 102-an antenna body; 103-presetting a gap; 500-an electronic device.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships that the products of the present invention are conventionally placed in use, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or element to which the description refers must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal", "vertical" and the like do not imply that the components are required to be absolutely horizontal or pendant, but rather may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

First, the technical problem to be solved by the present application will be briefly described.

An antenna is a device that can radiate electromagnetic waves in a specific direction in space or receive electromagnetic waves in a specific direction in space. A typical electronic communication device needs to operate in a certain frequency range.

For different electronic devices, the required operating frequency band is different, for example, the frequency band of DECT (around 1.9 GHz) protocol is different from the frequency band of bluetooth (2.4GHz), and the required size of the antenna in different frequency bands is different. However, some protocols are not compatible with other protocols, for example, the DECT protocol needs to filter out interference of 2.4GHz frequency, and if a dual-frequency antenna of 1.9GHz and 2.4GHz is designed for convenience, the antenna can absorb signals of 2.4GHz and cause interference to chips inside electronic devices, so that only a single-frequency antenna can be designed.

However, with the existing antenna design scheme, when each version of wireless protocol is changed, the shape of the antenna needs to be redesigned, and the edition proofing verification needs to be reissued, which causes problems of too long development time, increased cost and the like of the antenna.

Therefore, the embodiment of the application provides a structure of an antenna device with adjustable length, which solves the problems in the prior art and realizes flexible adjustment of an antenna.

The adjustable length antenna apparatus provided in the present application will be described in detail by way of a number of specific embodiments.

Fig. 1 is a schematic structural diagram of an antenna device provided in the prior art; therefore, as shown in fig. 1, in the prior art, an Antenna designed on a Printed Circuit Board (PCB) is generally in an Inverted F shape, which is also called an "Inverted F Antenna" (IFA Antenna), and the "Inverted F Antenna" includes: side A, side B, side C, and a feed point.

It should be noted that both the adjustable-length antenna device and the "inverted-F antenna" in the prior art adopt an onboard antenna, that is, the adjustable-length antenna device and the "inverted-F antenna" are directly manufactured on a main Board of a Printed Circuit Board (PCB for short).

Generally, the antenna length L is related to the wavelength λ of the electromagnetic wave, the product of which is the speed of light v and the frequency f. The antenna length L is related to the frequency f, i.e. the antenna length is equal to the speed of light/wavelength/4.

Therefore, according to the theory, the antenna length L in the 1890-. Therefore, the antenna lengths L corresponding to different frequency bands are different.

Therefore, the design scheme of the adjustable length antenna device provided by the application specifically is as follows: the length of the side a in the inverted-F antenna can be adjusted to change the resonance point of the antenna. But not limited to this, other types of antennas may also apply the reserved gap according to actual requirements.

Fig. 2 is a schematic structural diagram of an antenna apparatus with adjustable length according to an embodiment of the present invention; as shown in fig. 2, the present application provides an adjustable length antenna apparatus 100 including: the antenna comprises a printed circuit board 101 and an antenna body 102 arranged on the printed circuit board 101, wherein a preset notch 103 is arranged on a broken line part of the antenna body 102.

Optionally, the antenna body 102 includes: a plurality of sides C, B, D, F1, G, F2, E, etc., and the fold line portion of the antenna body 102 includes: the connecting part consists of sides B, D, F1, G, F2 and E.

For example, in order to make the resonant frequency point of the adjustable-length antenna device 100 provided by the present application to be at 1.88-1.93GHz or 2.4-2.5GHz, the antenna main body 102 may include sides that are sized to: the C side was 8mm, the B side was 7.5mm, the D side was 2mm, the F1 side was 2.5mm, the G side was 11mm, the F2 side was 3mm, and the E side was 4 mm. Of course, the antenna shape is not limited to this, and may be set according to an actual antenna shape.

With reference to fig. 2, the predetermined notch 103 is disposed on the broken line portion of the antenna main body 102, and the broken circuit or the short circuit at the edge of the notch can be realized by changing the disconnection or the connection at the predetermined notch, so as to adjust the length of the trace of the antenna main body 102, thereby achieving the purpose of changing the resonant frequency of the antenna main body 102.

To sum up, the embodiment of the present application provides an adjustable length antenna device, including: the antenna comprises a printed circuit board and an antenna body arranged on the printed circuit board, wherein a preset gap is formed in the broken line part of the antenna body. In this scheme, set up one through the broken line part at antenna main part and preset the breach, can predetermine the disconnection or the connection status of breach department through the change to realize adjusting antenna main part's line length of walking, and then realize adjusting resonant frequency's purpose, avoided because wireless communication agreement changes the edition, the troublesome problems such as redesign antenna, reprint board verification that cause have effectively saved cost such as manpower, material resources.

Optionally, an adjustable device is disposed at the preset notch, for example, the adjustable device may be an adjustable resistor, an adjustable capacitor, or an adjustable inductor, that is, the adjustable device disposed at the preset notch may increase or decrease a resistance value, a capacitance value, and an inductance value in the wiring of the antenna body 102, so as to achieve the purpose of changing the resonant frequency.

Optionally, the adjustable device comprises: zero ohm resistance.

In this embodiment, zero-ohm resistors are arranged at the preset notches, and one or more zero-ohm resistors may be arranged, where the number of zero-ohm resistors is not specifically limited.

Optionally, the preset gap 103 further includes: with the reserve pad of zero ohm resistance fit welding, when predetermineeing breach 103 and need be in connected state, then can be through with the reserve pad of zero ohm resistance fit welding, laminate zero ohm resistance to the above-mentioned preset breach department that the broken line part of antenna main part 102 shown in fig. 2 set up to improve zero ohm resistance welding's steadiness.

In this embodiment, can be through the reservation pad with zero ohm resistance cooperation welding, laminate zero ohm resistance to the preset breach department that the broken line part of antenna main part set up to improve zero ohm resistance welding's steadiness.

When it needs to be described, if no pad is reserved, the zero-ohm resistor may be connected in other ways as needed, which is not limited to this.

Optionally, when the preset gap 103 is short-circuited by welding of an adjustable device, the length of the antenna main body 102 is 31mm, and the adjustable frequency of the antenna apparatus is 2.4-2.5GHz, so that the adjustable length antenna apparatus 100 after adjusting the frequency can be applied to electronic devices with 2.4-2.5GHz, such as bluetooth and WiFi.

In this embodiment, for example, fig. 3 is a schematic structural diagram of an adjustable-length antenna apparatus according to another embodiment of the present invention, as shown in fig. 3, when the resonant frequency of the antenna body 102 is required to be 2.4-2.5GHz, a zero-ohm resistor may be welded to the reserved pad through the reserved pad disposed at the preset notch, so that the broken line portion of the antenna body 102 is short-circuited by the zero-ohm resistor, at this time, the length of the antenna body 102 is a length of a straight line shape, which is, taking fig. 1 as an example, equivalent to thickening the edge a of the "inverted-F antenna" shown in fig. 1, that is, the length of the antenna body 102 is equal to C + B + D + G and is equal to 31mm, so that the effect of shortening the length of the antenna body 102 is achieved, and the purpose of changing the resonant frequency is achieved.

Optionally, when the preset notch is broken, the length of the antenna main body is 39mm, and the adjustable frequency of the antenna device is 1.88-1.93GHz, so that the adjustable length antenna device 100 after adjusting the frequency can be applied to electronic equipment of 1.88-1.93GHz, such as DECT microphone.

In this embodiment, for example, fig. 4 is a schematic structural diagram of an adjustable-length antenna apparatus according to still another embodiment of the present invention, as shown in fig. 4, when the resonant frequency of the antenna main body 102 is required to be 1.88-1.93GHz, a zero-ohm resistor is not attached to the reserved pad disposed at the preset notch, so that the preset notch disposed at the broken line portion of the antenna main body 102 is in an open state, and at this time, the length of the antenna main body 102 is the length of the broken line shape, that is, the length of the antenna main body 102 is equal to C + B + D + F1+ G + F2+ E ≈ 39mm, so as to achieve the effect of increasing the length of the antenna main body 102, thereby achieving the purpose of changing the resonant frequency.

In this embodiment, the application provides an adjustable length antenna device, mainly through whether need to weld zero ohm resistance device to reserving the pad, be in connected state or off-state in order to confirm that antenna body 102's broken line part is equipped with and predetermines the breach, and then change antenna body 102's routing length, effectively reached the purpose of adjusting antenna body 102 resonant frequency, the agreement is avoided changing the version, the redesign antenna that causes, the troublesome problem of beating the board again and verifying, the manpower has effectively been saved, material resources etc. cost.

Alternatively, the antenna body 102 in fig. 2 may be an IFA antenna. But not limited to this, and accordingly, the broken line portion may be the broken line portion of other types of antennas.

Alternatively, the broken line portion of the antenna main body 102 in fig. 2 may be an extended region of the antenna main body and may have a shape of a loop.

The shape of the clip may be a folded shape or a folded shape, and is not limited herein.

Most electronic devices now have increasingly complex structures, leaving less and less space for antennas. Therefore, in this embodiment, the broken line portion of the antenna main body 102 in fig. 2 may be an extension area of the antenna main body and has a shape of a square, so as to save space.

Fig. 5 is a schematic structural diagram of an electronic device according to an embodiment of the present invention, and as shown in fig. 5, the electronic device 500 includes the antenna device 100 with adjustable length provided in the foregoing embodiment, so that the electronic device 500 can change a connection or disconnection state at a preset gap through the antenna device 100 with adjustable length, thereby achieving an objective of adjusting different frequency bands.

In addition, the electronic device 500 provided in this embodiment may further include other more elements according to different usage scenarios, such as a camera and a microphone, which are not described herein again.

The utility model provides an adjustable length antenna device's structure sets up rationally, predetermine the connection or the off-state of breach department through the change, just can effectively realize the adjustment to different frequency channels for the resonance point of antenna main part can freely be adjusted, can two different frequency channels of adaptation, and overall structure is compact, avoided because wireless communication agreement changes edition, the redesign antenna that causes, beat troublesome problems such as board verification again, the cost such as manpower, material resources have effectively been saved.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (9)

1. An adjustable length antenna assembly, comprising: the antenna comprises a printed circuit board and an antenna body arranged on the printed circuit board, wherein a preset notch is formed in the broken line part of the antenna body.

2. The device according to claim 1, characterized in that the predetermined gap is provided with an adjustable means.

3. The apparatus of claim 2, wherein the adjustable means comprises: zero ohm resistance.

4. The apparatus according to claim 3, wherein the predetermined notch further comprises: and the reserved welding disc is welded with the zero-ohm resistor in a matched mode.

5. The device according to any one of claims 2-4, wherein the length of the antenna body is 31mm and the adjustable frequency of the antenna device is 2.4-2.5GHz when the predetermined gap is short-circuited by welding with an adjustable device.

6. The device according to any one of claims 2-4, wherein the length of the antenna body is 39mm when the antenna body is disconnected at the predetermined gap, and the adjustable frequency of the antenna device is 1.88-1.93 GHz.

7. The device of claim 1, wherein the antenna body is an inverted-F antenna.

8. The apparatus of claim 1, wherein the break portion is an extended region of the antenna body in a shape of a loop.

9. An electronic device, comprising: an adjustable length antenna assembly as claimed in any one of claims 1 to 8.

Images