CN115360508A - Dual-band antenna device and ZigBee module - Google Patents

Abstract

The invention provides a dual-band antenna device and a ZigBee module. The dual-band antenna device comprises a feed source, a grounding tube body, a radiation tube body and a connecting wire body. The feed source comprises a feed point part and a feed ground part, and the feed point part and the feed ground part are opposite and arranged at intervals. The grounding tube is connected to the ground feeding portion and extends in the first direction. The radiation tube body is connected to the feed point part and extends towards the second direction. The first direction and the second direction face away from each other. A gap is formed between the radiation tube body and the grounding tube body. The connecting line body comprises a signal line and a grounding connecting line which are connected. The grounding connection line wraps the periphery of the signal line, the connection line body penetrates through the grounding tube body, the grounding connection line is electrically connected to the ground feeding portion, and the signal line is electrically connected to the ground feeding portion. Therefore, the dual-band antenna device can work in a specified frequency band, and has higher antenna gain and better radiation efficiency while not increasing the size area, thereby improving the performance of the antenna device.

Description

Dual-band antenna device and ZigBee module

Technical Field

The invention relates to the technical field of antennas, in particular to a dual-band antenna device and a ZigBee module.

Background

With the development of wireless communication technology, the ZigBee technology is widely accepted because of its characteristics of low power consumption, low cost and low complexity. However, most of the antenna devices in the ZigBee modules have poor performance, and cannot meet the use requirements.

Disclosure of Invention

Embodiments of the present invention provide a dual band antenna apparatus to improve at least one of the above problems.

The embodiment of the invention achieves the above object by the following technical solutions.

In a first aspect, an embodiment of the present invention provides a dual-band antenna apparatus. The dual-band antenna device comprises a feed source, a grounding tube body, a radiation tube body and a connecting wire body. The feed source comprises a feed point part and a feed ground part, and the feed point part and the feed ground part are opposite and arranged at intervals. The grounding tube is connected to the ground feeding portion and extends in the first direction. The radiation tube is connected to the feed point part and extends towards the second direction. The first direction and the second direction are opposite. A gap is arranged between the radiation tube body and the grounding tube body. The connecting line body comprises a signal line and a grounding connecting line which are connected. The grounding connection line wraps the periphery of the signal line, the connection line body penetrates through the grounding tube body, the grounding connection line is electrically connected to the ground feeding portion, and the signal line is electrically connected to the ground feeding portion.

In some embodiments, the radiating and ground tubes are symmetrically located on either side of the gap.

In some embodiments, the radiating tube body and the grounding tube body are each 21 to 23mm in length.

In some embodiments, the radiating and grounded tubes are each 4 to 5mm in diameter.

In some embodiments, the radiating tubes taper in cross-sectional area towards one end of the gap and the grounded tubes taper in cross-sectional area towards one end of the gap.

In some embodiments, the gap has a minimum gap width of 8 to 9mm.

In some embodiments, the radiation pipe body includes a first radiation section and a second radiation section connected, the first radiation section and the second radiation section being coaxially disposed, the first radiation section being connected to the feed point portion.

In some embodiments, the dual band antenna apparatus further includes a protective sleeve disposed in the gap, the protective sleeve including a first end and a second end connected to each other, the first end being disposed on the grounding tube body, and the second end being disposed on the radiating tube body.

In some embodiments, the ground tube and the radiation tube are made of zinc alloy.

The embodiment of the invention also provides a ZigBee module. The ZigBee module comprises a circuit board and the dual band antenna device of any of the above embodiments. The circuit board is provided with a socket. The connecting wire body includes the plug, and signal line and ground connection connecting wire are connected in the plug, and the plug is pegged graft in the socket.

The embodiment of the invention provides a dual-band antenna device and a ZigBee module. The dual-band antenna device comprises a feed source, a grounding tube body, a radiation tube body and a connecting wire body. Wherein, the feed includes and is presented some portion and is presented ground portion, presents some portion and presents ground portion relative and interval setting, and the ground connection body is connected in presenting ground portion to extend towards the first direction, thereby be convenient for adjust frequency and bandwidth. And the radiation tube body is connected with the feed point part and extends towards the second direction, so that the feed point part feeds a specified current signal into the radiation tube body, and the radiation tube body works in a specified frequency band. In addition, the first direction deviates from the second direction, a gap is formed between the radiation tube body and the grounding tube body, and the gap is favorable for adjusting the waveform of the dual-band antenna device and the isolation degree of the test. Therefore, the dual-band antenna device improves the efficiency and the gain without increasing the size area, improves the performance of the dual-band antenna device, and meets the requirement of wireless transmission.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a dual-band antenna apparatus according to an embodiment of the present invention.

Fig. 2 is a schematic partial size diagram of a dual-band antenna apparatus provided in an embodiment of the present invention.

Fig. 3 shows a cross-sectional view of the connection body of fig. 1.

Fig. 4 is a schematic structural diagram of a dual band antenna apparatus according to another embodiment of the present invention.

Fig. 5 is a schematic diagram illustrating a position of a dual-band antenna apparatus provided by an embodiment of the present invention in a rectangular spatial coordinate system.

Fig. 6 is a schematic diagram illustrating radiation directions of the dual band antenna device of fig. 5 at 2400 MHz.

Fig. 7 is a schematic diagram showing the H-plane radiation direction of the dual band antenna device of fig. 6 at 2400 MHz.

Fig. 8 is a schematic diagram showing the E1 plane radiation direction of the dual band antenna device of fig. 6 at 2400 MHz.

Fig. 9 is a schematic diagram showing the E2 plane radiation direction at 2400MHz of the dual band antenna apparatus in fig. 6.

Fig. 10 is a schematic diagram illustrating a radiation direction of the dual band antenna device of fig. 5 at 2450 MHz.

Fig. 11 is a schematic diagram showing the H-plane radiation direction of the dual band antenna device of fig. 10 at 2450 MHz.

Fig. 12 is a schematic diagram showing the E1 plane radiation direction of the dual band antenna device of fig. 10 at 2450 MHz.

Fig. 13 is a schematic diagram showing the E2 plane radiation direction of the dual band antenna device of fig. 10 at 2450 MHz.

Fig. 14 shows a schematic diagram of the radiation direction of the dual band antenna arrangement of fig. 5 at 2500 MHz.

Fig. 15 shows a schematic diagram of the H-plane radiation direction of the dual band antenna arrangement of fig. 14 at 2500 MHz.

Fig. 16 is a schematic diagram showing the E1 plane radiation direction of the dual band antenna device in fig. 14 at 2500 MHz.

Fig. 17 shows a schematic diagram of the E2 plane radiation direction of the dual band antenna device of fig. 14 at 2500 MHz.

Fig. 18 shows a schematic diagram of the radiation direction of the dual band antenna arrangement of fig. 5 at 5050 MHz.

Fig. 19 shows a schematic diagram of the H-plane radiation direction at 5050MHz of the dual-band antenna device in fig. 18.

Fig. 20 is a schematic diagram showing the E1 plane radiation direction at 5050MHz of the dual band antenna device in fig. 18.

Fig. 21 shows a schematic diagram of the E2 plane radiation direction at 5050MHz of the dual band antenna device in fig. 18.

Fig. 22 is a schematic diagram illustrating a radiation direction of the dual band antenna device in fig. 5 at 5450 MHz.

Fig. 23 is a schematic diagram showing the H-plane radiation direction of the dual band antenna device in fig. 22 at 5450 MHz.

Fig. 24 is a schematic diagram showing the E1 plane radiation direction at 5450MHz of the dual band antenna device in fig. 22.

Fig. 25 shows a schematic diagram of the E2 plane radiation direction at 5450MHz of the dual band antenna device in fig. 22.

Fig. 26 is a schematic diagram showing a radiation direction of the dual band antenna device in fig. 5 at 5850 MHz.

Fig. 27 is a schematic diagram showing the H-plane radiation direction at 5850MHz of the dual band antenna apparatus of fig. 26.

Fig. 28 is a schematic diagram showing the E1 plane radiation direction at 5850MHz of the dual band antenna apparatus of fig. 26.

Fig. 29 is a diagram illustrating the E2 plane radiation direction at 5850MHz of the dual band antenna apparatus in fig. 26.

Detailed Description

In order to make the technical solution of the present invention better understood, the technical solution of the embodiment of the present invention will be clearly and completely described below with reference to the attached drawings. It is to be understood that the described embodiments are merely exemplary of some, and not necessarily all, embodiments of the invention. All other embodiments, which can be obtained by a person skilled in the art without making creative efforts based on the embodiments of the present invention, belong to the protection scope of the present invention.

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.

ZigBee is a low-power local area network protocol based on IEEE802.15.4 standard, has the characteristics of low power consumption, low cost, low complexity, strong anti-interference capability, large network capacity and the like, and can support various network topological structures such as a mesh network, a star network, a tree network and the like. ZigBee can use a variety of different frequency bands.

In practical research, the inventor of the present application finds that the operating frequency, efficiency and antenna gain of antenna radiation can be effectively adjusted by adjusting the wiring mode of the dual-band antenna device. Therefore, designing the wiring pitch and length of the antenna device is an important factor in achieving improved antenna performance.

In view of this, the present invention provides a dual band antenna device, which can be disposed in a ZigBee module and is used for generating operating frequency bands of 2.4GHz and 5 GHz. In the following embodiments, a dual-band antenna device is mainly used for an example of being applied to a ZigBee module of a gateway device, and other cases requiring an antenna device can be referred to for implementation.

Referring to fig. 1, the dual-band antenna device 10 includes a feeding source 100, a grounding tube 200, a radiating tube 300, and a connecting wire 400. The feed source 100 is connected to the grounding tube body 200 and the radiation tube body 300, so that the feed source 100 can feed a current signal to the radiation tube body 300 to operate the radiation tube body 300 at a designated frequency band, for example, a frequency band around 2.4GHz and a frequency band around 5 GHz. Also, the grounded tube 200 may adjust the frequency and bandwidth of the dual band antenna device 10. The connection wire body 400 is connected to the feed source 100 and can transmit a current signal for the feed source 100. The performance of the dual-band antenna device 10 can be improved by adjusting the positions and shapes of the feeding source 100, the radiating pipe 300 and the grounding pipe 200.

The feed 100 includes a feed point portion 110 and a ground portion 120, and the feed point portion 110 is opposite to the ground portion 120 and spaced apart from the ground portion 120, so as to prevent the feed point portion 110 and the ground portion 120 from being connected to each other to cause a short circuit.

The grounding pipe body 200 may be a hollow pipe body structure, and the grounding pipe body 200 may also be a single-layered pipe body structure, thereby facilitating the manufacture of the grounding pipe body 200. The grounded tube 200 is connected to the ground feeding portion 120 and extends in a first direction (the first direction is shown as a direction X in fig. 1), so as to be beneficial for adjusting the frequency and bandwidth of the dual-band antenna apparatus 10, and thus improving the efficiency and gain.

The area of one end of the grounding tube 200 facing the gap 500 is gradually reduced to form the ground feeding portion 120, that is, the grounding tube 200 and the ground feeding portion 120 are integrally formed, so that the grounding tube 120 and the grounding tube 200 are connected, and the frequency of the grounding tube 200 is adjusted.

The radiation tube body 300 may be a hollow tube body structure, and the radiation tube body 300 may also be a single-layered tube body structure, thereby facilitating the manufacture of the radiation tube body 300 and transmitting and receiving signals with the radiation tube body 300. The radiation tube 300 is connected to the feeding point portion 110 and extends toward the second direction (the second direction is shown as the direction Y in fig. 1), so that the feeding point portion 110 feeds a specified current signal to the radiation tube 300, so that the radiation tube 300 operates in a specified frequency band, for example, a frequency band around 2.4GHz and a frequency band around 5 GHz. Further, the first direction and the second direction are deviated from each other, and a gap 500 is formed between the radiating tube 300 and the grounding tube 200, and the gap 500 is advantageous for adjusting the waveform of the dual band antenna apparatus 10 and for testing the isolation.

Referring to fig. 2, the radiation tube 300 and the grounding tube 200 are symmetrically located at two sides of the gap 500, that is, the radiation tube 300 and the grounding tube 200 have the same shape and size, thereby facilitating the manufacturing process and saving the process cost. In addition, the radiating tube 300 and the grounding tube 200 can also adjust the width of the gap 500, thereby adjusting the waveform of the dual band antenna apparatus 10 and the isolation of the test. In this embodiment, the lengths of the radiation tube 300 and the grounding tube 200 are equal, the lengths of the radiation tube 300 and the grounding tube 200 are both L1, the range of L1 is 21-23 mm, for example, L1 may be 22.5mm. The diameters of the radiation tube 300 and the grounding tube 200 are equal, and the diameters of the radiation tube 300 and the grounding tube 200 are both L2, where L2 has a value ranging from 4mm to 5mm, for example, L2 may be 4.3mm, 4.4mm, or 4.5mm.

The cross-sectional area of one end of the radiation tube 300 facing the gap 500 is gradually reduced to form the feeding point portion 110, that is, the radiation tube 300 and the feeding point portion 110 are integrally formed, so as to facilitate feeding of a current signal to the radiation tube 300, and further enable the radiation tube 300 to generate a designated working frequency band.

In some embodiments, the gap 500 has a minimum gap width L3, wherein L3 ranges from 8 to 9mm, for example, L3 can be 8.7mm, 8.8mm, or 8.9mm.

In some embodiments, the radiation tube body 300 includes a first radiation section 310 and a second radiation section 320 connected, the first radiation section 310 and the second radiation section 320 are coaxially disposed, and the first radiation section 310 is connected to the feed point portion 110. As such, since the first radiation segment 310 is disposed near the feeding point portion 110 and the second radiation segment 320 is disposed near the ground feeding portion 120, the first radiation segment 310 may generate a frequency band near 5GHz and the second radiation segment 320 may generate a frequency band near 2.4 GHz. In the present embodiment, the first radiation section 310 and the second radiation section 320 are integrally formed, thereby facilitating the conduction of the current signal and saving the manufacturing process.

Referring to fig. 3, the connecting wire body 400 may be a coaxial wire. The connection line body 400 may include a connection line body including a signal line 410 and a ground connection line 420, the ground connection line 420 is wrapped around the signal line 410, the connection line body 400 is disposed through the ground connection tube body 200, and the ground connection line 420 is electrically connected to the ground feeding portion 120, thereby facilitating a ground edge of the ground feeding portion 120. The signal line 410 is electrically connected to the feed point portion 110, thereby facilitating the feed point portion 110 to receive signals.

Referring to fig. 4, in some embodiments, the dual band antenna apparatus 10 further includes a protective sleeve 600, the protective sleeve 600 may be made of a rubber material, and the protective sleeve 600 is located in the gap 500, so as to prevent the exposed signal line 410 from being damaged. The protective sleeve 600 includes a first end 610 and a second end 620 connected to each other, the first end 610 is sleeved on the grounding tube 200, and the second end 620 is sleeved on the radiation tube 300, so that the grounding tube 200 and the radiation tube 300 are coaxially designed, the wiring tube and the radiation tube 300 are protected, and the radiation direction of the dual band antenna apparatus 10 is conveniently controlled.

In some embodiments, the grounding tube 200 and the radiating tube 300 are made of zinc alloy, which is beneficial to increase the efficiency and gain of the antenna device.

Referring to table 1, table 1 shows the frequencies and standing wave ratios of a plurality of measurement points of the dual band antenna apparatus 10 of the above embodiment obtained by the network analyzer test.

TABLE 1

Frequency (MHZ)	2400	2500	5050	5850
					Standing wave ratio	1.3	1.5	2.3	2.7

At present, the standing wave ratio of the dual band antenna device 1010 applied to 2.4GHz is in the range of 1.5 to 1.7, and the standing wave ratio of the dual band antenna device 10 applied to 5GHz is in the range of 2.9 to 3.0, so the dual band antenna device 10 of the embodiment of the present application has an advantage of low standing wave ratio.

Referring to table 2, in the dual band antenna apparatus 10 according to the above embodiment, the gains and efficiencies corresponding to different frequencies in the actual test are shown in table 2.

TABLE 2

From the test data in table 2, it can be seen that the maximum gain is 4.7 to 4.9dBi and the radiation efficiency is 71.26% to 76.19% in the 2400 to 2500MHz frequency band. In the frequency band of 5050 to 5850MHz, the maximum gain is 2.5 to 3.5dBi, and the radiation efficiency is 60.32% to 66.56%, therefore, the radiation efficiency of the dual-frequency antenna device obtained in the embodiment of the application is higher than 65% when the dual-frequency antenna device receives and transmits the 2.4GHz frequency band, the radiation efficiency of the dual-frequency antenna device when the dual-frequency antenna device receives the 5GHz frequency band is higher than 60%, and the maximum gain and the radiation efficiency of the dual-frequency antenna device 10 are obviously higher, so that the use requirements are met.

Referring to fig. 4, fig. 4 is a schematic diagram illustrating a position of the dual-band antenna apparatus 10 according to an embodiment of the present application in a spatial rectangular coordinate system, where in the spatial rectangular coordinate system O-xyz, the dual-band antenna apparatus 10 is located on an xOz coordinate plane, and an origin of coordinate axes is substantially located in a gap 500 of the dual-band antenna apparatus 10, so as to facilitate detection of the dual-band antenna apparatus 10.

Referring to fig. 6 to 9, fig. 6 shows a radiation pattern of the dual-band antenna apparatus 10 provided in the embodiment of the present application at 2400MHz in a spatial rectangular coordinate system, a central point of the pattern represents a position of the antenna, and a farther distance from the central point indicates a larger gain, and a darker color indicates a larger gain of the antenna. Fig. 7 shows a radiation pattern of an H plane (the H plane is a plane in which a magnetic field and a maximum radiation direction are located), fig. 8 shows a radiation pattern of an E1 plane (the E plane is a plane in which a maximum radiation direction and an electric field are located), and fig. 9 shows a radiation pattern of an E2 plane (the E plane is a plane in which a maximum radiation direction and an electric field are located). The radiation patterns shown in fig. 7 to 9 all extend in a certain direction, and the gain is high, that is, the gain and efficiency of the dual-band antenna device 10 are high on the plane where the dual-band antenna device 10 is located and the plane where the vertical dual-band antenna device 10 is located, so that the directional radiation can be realized, and thus the position of the dual-band antenna device 10 can be reasonably set according to actual requirements to improve the practicability.

Referring to fig. 10 to 13, fig. 10 shows a radiation pattern of the dual-band antenna device 10 provided by the embodiment of the present application at 2450MHz in a rectangular spatial coordinate system, where a central point of the graph represents a position of the antenna, and a farther distance from the central point indicates a larger gain, and a darker color indicates a larger gain of the antenna. Fig. 11 is a radiation pattern of an H plane (the H plane is a plane in which a magnetic field and a maximum radiation direction are located), fig. 12 is a radiation pattern of an E1 plane (the E plane is a plane in which a maximum radiation direction and an electric field are located), and fig. 13 is a radiation pattern of an E2 plane (the E plane is a plane in which a maximum radiation direction and an electric field are located). The radiation patterns shown in fig. 11 to 13 all extend in a certain direction, and the gain is high, that is, the gain and efficiency of the dual-band antenna device 10 are high on the plane where the dual-band antenna device 10 is located and the plane where the vertical dual-band antenna device 10 is located, so that the directional radiation can be realized, and thus the position of the dual-band antenna device 10 can be reasonably set according to actual requirements to improve the practicability.

Referring to fig. 14 to 17, fig. 14 shows the radiation pattern of the dual-band antenna device 10 provided by the embodiment of the present application at 2500MHz in a rectangular spatial coordinate system, where the center point of the graph represents the position of the antenna, and the farther away from the center point indicates the greater the gain, and the darker the color indicates the greater the gain of the antenna. Fig. 15 is a radiation pattern of an H plane (the H plane is a plane in which a magnetic field and a maximum radiation direction are located), fig. 16 is a radiation pattern of an E1 plane (the E plane is a plane in which a maximum radiation direction and an electric field are located), and fig. 17 is a radiation pattern of an E2 plane (the E plane is a plane in which a maximum radiation direction and an electric field are located). The radiation patterns shown in fig. 15 to 17 all extend in a certain direction, and the gain is higher, that is, the gain and efficiency of the dual-band antenna device 10 are higher in the plane of the dual-band antenna device 10 and the plane of the vertical dual-band antenna device 10, so that directional radiation can be realized, and the position of the dual-band antenna device 10 can be reasonably set according to actual requirements to improve the practicability.

Referring to fig. 18 to 21, fig. 18 shows a radiation pattern of the dual-band antenna apparatus 10 provided by the embodiment of the present application at 5050MHz in a spatial rectangular coordinate system, where a central point of the pattern represents a position of the antenna, and a farther distance from the central point indicates a larger gain, and a darker color indicates a larger gain of the antenna. Fig. 19 shows a radiation pattern of an H plane (the H plane is a plane in which a magnetic field and a maximum radiation direction are located), fig. 20 shows a radiation pattern of an E1 plane (the E plane is a plane in which a maximum radiation direction and an electric field are located), and fig. 21 shows a radiation pattern of an E2 plane (the E plane is a plane in which a maximum radiation direction and an electric field are located). The radiation patterns shown in fig. 19 to 21 all extend in a certain direction, and the gain is high, that is, the gain and efficiency of the dual band antenna apparatus 10 are high on the plane where the dual band antenna apparatus 10 is located and the plane where the vertical dual band antenna apparatus 10 is located, so that the directional radiation can be realized, and thus the position of the dual band antenna apparatus 10 can be reasonably set according to actual requirements to improve the practicability.

Referring to fig. 22 to fig. 25, fig. 22 shows a radiation pattern of the dual-band antenna apparatus 10 provided in the embodiment of the present application at 5450MHz in a spatial rectangular coordinate system, where a central point of the pattern represents a position of the antenna, and a farther distance from the central point indicates a larger gain, and a darker color indicates a larger gain of the antenna. Fig. 23 shows a radiation pattern of an H plane (the H plane is a plane in which a magnetic field and a maximum radiation direction are located), fig. 24 shows a radiation pattern of an E1 plane (the E plane is a plane in which a maximum radiation direction and an electric field are located), and fig. 25 shows a radiation pattern of an E2 plane (the E plane is a plane in which a maximum radiation direction and an electric field are located). The radiation patterns shown in fig. 23 to 25 all extend in a certain direction, and the gain is high, that is, the gain and efficiency of the dual band antenna apparatus 10 are high on the plane where the dual band antenna apparatus 10 is located and the plane where the vertical dual band antenna apparatus 10 is located, so that the directional radiation can be realized, and thus the position of the dual band antenna apparatus 10 can be reasonably set according to actual requirements to improve the practicability.

Referring to fig. 26 to 29, fig. 26 shows a radiation pattern of the dual-band antenna device 10 provided by the embodiment of the present application at 5850MHz in a rectangular spatial coordinate system, where a center point of the graph represents a position of the antenna, and a farther distance from the center point indicates a larger gain, and a darker color indicates a larger gain of the antenna. Fig. 27 shows a radiation pattern of an H plane (the H plane is a plane in which a magnetic field and a maximum radiation direction are located), fig. 28 shows a radiation pattern of an E1 plane (the E plane is a plane in which a maximum radiation direction and an electric field are located), and fig. 29 shows a radiation pattern of an E2 plane (the E plane is a plane in which a maximum radiation direction and an electric field are located). The radiation patterns shown in fig. 27 to 29 are all extended in a certain direction, and the gain is high, that is, the gain and efficiency of the dual band antenna apparatus 10 are high on the plane where the dual band antenna apparatus 10 is located and the plane where the vertical dual band antenna apparatus 10 is located, so that the directional radiation can be realized, and thus the position of the dual band antenna apparatus 10 can be reasonably set according to actual requirements to improve the practicability.

The invention also provides a ZigBee module which can be applied to gateway equipment. The ZigBee module comprises a circuit board (not shown) and the dual band antenna device 10 according to the above embodiment. The specific structure of the dual band antenna device 10 refers to the above-described embodiment. Since the ZigBee module adopts all technical solutions of all the above embodiments, all the beneficial effects brought by the technical solutions of the above embodiments of the dual-band antenna device 10 are also achieved, and are not described in detail herein.

In some embodiments, the circuit board is provided with a socket (not shown). The connection body 400 includes a plug 430, and the signal line 410 and the ground connection line 420 are connected to the plug 430, and the plug 430 is plugged into a socket, so that the dual band antenna apparatus 10 is connected to a circuit board, thereby facilitating a radio frequency circuit of the circuit board to transmit a signal to the feed source 100.

In the present invention, the terms "mounted," "connected," and the like are to be construed broadly unless otherwise explicitly specified or limited. For example, the connection can be fixed connection, detachable connection, integral connection or transmission connection; may be directly connected or indirectly connected through an intermediate medium. The specific meanings of the above terms in the present invention can be understood according to specific situations by those of ordinary skill in the art.

Furthermore, the terms "first," "second," and the like are used merely for distinguishing between descriptions and not intended to imply or imply a particular structure. The description of the term "some embodiments" means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In the present invention, the schematic representations of the terms described above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the various embodiments or examples and features of the various embodiments or examples described in this disclosure may be combined and combined by those skilled in the art without being mutually inconsistent.

The above embodiments are only for illustrating the technical solutions of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the embodiments of the present invention, and they should be construed as being included therein.

Claims (10)

1. A dual band antenna assembly, comprising:

the feed source comprises a feed point part and a ground part, and the feed point part and the ground part are opposite and arranged at intervals;

the grounding tube body is connected to the ground feeding part and extends towards a first direction;

the radiation tube body is connected to the feed point part and extends towards a second direction, the first direction and the second direction are deviated, and a gap is formed between the radiation tube body and the grounding tube body; and

the connecting wire body comprises a signal wire and a grounding connecting wire which are connected, the grounding connecting wire wraps the periphery of the signal wire, the connecting wire body penetrates through the grounding wire body, the grounding connecting wire is electrically connected to the ground feeding portion, and the signal wire is electrically connected to the ground feeding portion.

2. The dual band antenna assembly of claim 1 wherein said radiating body and said grounding body are symmetrically located on either side of said gap.

3. The dual band antenna assembly of claim 2 wherein said radiating tube and said grounding tube are each 21-23 mm in length.

4. The dual band antenna assembly of claim 3 wherein said radiating tube and said grounding tube are each 4-5 mm in diameter.

5. The dual band antenna assembly of claim 1 wherein said radiating tube tapers in cross-sectional area toward one end of said gap and said grounding tube tapers in cross-sectional area toward one end of said gap.

6. Dual band antenna device according to claim 5, characterized in that the minimum gap width of said gap is 8-9 mm.

7. The dual band antenna assembly of claim 1 wherein said radiating body comprises a first radiating section and a second radiating section connected, said first radiating section and said second radiating section being coaxially disposed, said first radiating section being connected to said feed point portion.

8. The dual band antenna apparatus of claim 1 further comprising a protective sleeve disposed in the gap, the protective sleeve including a first end and a second end connected, the first end engaging the ground tube and the second end engaging the radiation tube.

9. The dual band antenna assembly of claim 1 wherein said ground and radiating bodies are formed of a zinc alloy.

10. A ZigBee module, comprising:

a circuit board provided with a socket; and

the dual band antenna assembly of any one of claims 1 through 9, wherein the connecting wire body comprises a plug, the signal wire and the ground connecting wire are connected to the plug, and the plug is plugged into the receptacle.

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