TWM546605U - Integrated structure of antenna casing - Google Patents

Description

Antenna casing integration structure

The present invention relates to an antenna chassis integrated structure, in particular, the antenna body of the antenna integrated unit covers the antenna slot of the metal casing, and adjusts the position and shape of the excitation portion , the ground portion and the impedance matching portion of the antenna integration unit. And the length and width of the antenna slot to control the resonant frequency band and bandwidth of the resonant mode.

Due to the rapid development of mobile communication technology and the expansion of its application range, light, thin and small size are the trends and goals of mobile device design, so the antennas applied to mobile devices must meet the requirements of miniaturization, planarization and multi-band applications.

On the other hand, with the demand of the consumer market, the metal casing is the design trend of the mobile device product for the purpose of achieving a thinner appearance of the mobile device and taking into consideration the structural strength. However, the thinning of the mechanism may make the space available for assembling and designing the antenna insufficient. Moreover, the shielding effect of the metal casing may limit the radiatable area of the antenna, resulting in poor radiation efficiency of the antenna and insufficient application bandwidth.

Therefore, there is a great need for an innovative antenna chassis integrated structure, which provides the advantages of a planarized structure and a multi-band application, and covers the antenna slot of the metal casing by using the antenna body of the antenna integration unit, and adjusts the excitation portion of the antenna integration unit. , and the location of the ground portion of the impedance matching portion, and the shape of the slot antenna length, width controlled resonant mode resonance frequency band and bandwidth, thereby solving all the problems of the conventional techniques.

The main purpose of the present invention is to provide an antenna housing integrated structure, which mainly comprises an antenna integration unit and a metal casing, wherein the antenna integration unit and the metal casing are electrically conductive, and the antenna integration unit is attached to the antenna slot. The metal casing is integrated into one. The antenna integration unit is connected to the coaxial transmission line for transmitting and receiving signals. In addition, the coaxial transmission line includes an inner conductor and an outer conductor.

The antenna integration unit and the metal casing may be composed of the same or different electrically conductive materials.

Specifically, the antenna integration unit includes an antenna body, an excitation portion, a ground portion, an impedance matching portion, and a ground conductor, and the antenna slot is covered by the antenna body to generate a resonance mode as a resonant cavity radiated by the antenna.

Further, the excitation unit, the grounding portion, and the impedance matching unit are disposed on the antenna body and are located on the surface of the antenna body. The excitation unit and the ground portion are separated from each other, and the ground portion and the impedance matching unit are electrically connected to each other, and the excitation unit and the impedance matching unit are electrically connected. The position corresponds to the antenna slot configuration, the inner conductor is connected to the excitation portion, and the outer conductor is connected to the ground portion, thereby exciting the antenna slot to generate a resonant mode.

The impedance matching portion may further include a lateral extension extending laterally from the intermediate portion of the impedance matching portion, wherein the lateral extension portion is also disposed corresponding to the antenna slot.

The creation can further control the resonance frequency band and the bandwidth by adjusting the relative position of the excitation portion , the ground portion and the impedance matching portion, the geometry, and the length and width of the antenna slot on the metal casing, thereby forming a wireless compatible with each other. Antenna for communication applications. In addition, the author can also configure several integrated units to correspond to a plurality of antenna slots opened on the metal casing to meet the requirements of wireless communication applications requiring multiple antennas in the mobile device.

The implementation of the present invention will be described in more detail below with reference to the drawings and component symbols, so that those skilled in the art can implement the present specification after studying the present specification.

Referring to the first figure, a schematic diagram of an integrated structure of an antenna casing of the present creative embodiment is shown. As shown in the first figure, the integrated antenna casing integrated structure mainly includes an antenna integrating unit 10 and a metal casing 20, all of which are electrically conductive, and are composed of the same or different conductive materials, wherein the antenna integrating unit 10 is attached. The metal casing 20 is integrated into the body, and the antenna integration unit 10 is connected to the coaxial transmission line 30 for wireless transmission and reception to external signals. Generally, the coaxial transmission line 30 includes an outer conductor 31 and an inner conductor 32.

Specifically, the antenna integration unit 10 includes the antenna body 11, the excitation portion 12, the ground portion 13, the impedance matching portion 14, and the ground conductor 15, and the metal casing 20 has the antenna slot 21 (shown by a broken line in the figure) For example, a rectangular hole is covered by the antenna body 11 to serve as a resonant cavity radiated by the antenna to generate a resonant mode. In addition, the antenna body 11 may be in the form of a conductive thin plate, and the metal casing 20 may be an outer casing of an electronic device, such as a metal casing of a mobile phone.

The excitation portion 12, the grounding portion 13, and the impedance matching portion 14 of the antenna integration unit 10 are located on the conductive surface of the antenna body 11, wherein the excitation portion 12 and the impedance matching portion 14 are separated from each other without contact, for example, respectively. And the right side, and the grounding portion 13 is located at the edge of the antenna body 11, such as the lower edge of the antenna body 11 in the figure. Furthermore, the grounding portion 13 is electrically connected to the impedance matching portion 14, and the positions of the excitation portion 12 and the impedance matching portion 14 are arranged corresponding to the antenna slot 21 of the metal casing 20.

Further, the vertical dimension of the excitation portion 12 and the impedance matching portion 14 is larger than the vertical opening size of the antenna slot 21, that is, the excitation portion 12 and the impedance matching portion 14 cross the antenna slot 21 in the vertical direction. In particular, the impedance matching portion 14 includes a laterally extending portion 14T that extends laterally from the region of the impedance matching portion 14, and the laterally extending portion 14T is disposed corresponding to the antenna slot 21.

Further, the inner conductor 32 of the coaxial transmission line 30 is connected to the excitation portion 12, and the outer conductor 31 is connected to the ground portion 13, thereby exciting the antenna slot 21 provided in the metal casing 20 to generate a resonance mode. In particular, the position of the impedance matching portion 14 relative to the antenna slot 21 can be used to adjust the resonant frequency band and bandwidth of the resonant mode, such as being disposed closer to or away from the left or right side of the antenna slot 21.

For a detailed explanation of the effect of the present invention, reference may be made to the second and third figures, wherein the second figure is an exemplary example of the performance of the integrated antenna chassis integrated structure in the Voltage Standing Wave Ratio (VSWR). The data, and the third figure is the reference data for the radiation efficiency of the creation. As shown in the second figure, the antenna chassis integrated structure of the present invention maintains a relatively low voltage standing wave (VSWR) in the frequency range covered, such as 2.0 to 6.0 GHz, especially 2.4 to 2.5 GHz and 5.15 to 5.85. GHz band. Of course, the frequency band having a lower voltage standing wave (VSWR) can be substantially achieved by appropriately adjusting the lateral position of the impedance matching portion 14 with respect to the antenna slot 21. In addition, the performance of this creation in terms of radiation efficiency is shown in the third figure.

Referring to the fourth figure, a schematic diagram of the integrated structure of the antenna casing of the second embodiment of the present invention includes a plurality of antenna integration units 10A, 10B (only two antenna integration units are shown for convenience of explanation) and a metal casing 20, The wire integration units 10A, 10B are integrated into different positions of the metal casing 20 every day, for example, the antenna integration unit 10A is located on the left side and the antenna integration unit 10B is located on the right side, and the metal casing 20 has a plurality of antenna slots. 21A, 21B (only two antenna slots are shown here for convenience of explanation), and each of the antenna integrating units 10A, 10B is of a structure similar to the antenna integrating unit 10 of the first embodiment in the first figure. Specifically, the antenna integration unit 10A includes an antenna body 11A, an excitation portion 12A, a ground portion 13A, an impedance matching portion 14A, and a ground conductor 15A, and the antenna integration unit 10B includes an antenna body 11B, an excitation portion 12B, a ground portion 13B, and impedance matching. Portion 14B and grounding conductor 15B.

Further, in the antenna integration unit 10A, the antenna body 11A, the excitation portion 12A, the ground portion 13A, the impedance matching portion 14A, and the ground conductor 15A are connected and arranged in the same manner as the antenna body 11, the excitation portion 12, and the ground of the first diagram. Similarly, the impedance matching unit 14 and the ground conductor 15; similarly, the antenna unit 11B, the excitation unit 12B, the ground portion 13B, the impedance matching unit 14B, and the ground conductor 15B are connected and arranged in the same manner as the first antenna assembly unit 10B. The antenna body 11, the excitation portion 12, the ground portion 13, the impedance matching portion 14, and the ground conductor 15 of the drawing, and thus the same technical features will not be described again.

In the second embodiment of the present invention, the antenna body 11A and the antenna body 11B are respectively disposed corresponding to the antenna slots 21A, 21B of the metal casing 20, and cover the antenna slots 21A, 21B, and the antenna integration units 10A, 10B The different coaxial transmission lines 30A, 30B are respectively connected, so that the antenna slots 21A, 21B have the function of individual resonant cavities for generating corresponding resonant modes, and specifically implementing the multi-antenna function.

Further, the coaxial transmission line 30A includes the outer conductor 31A and the inner conductor 32A, and the coaxial transmission line 30B includes the outer conductor 31B and the inner conductor 32B, wherein the inner conductor 32A is connected to the excitation portion 12A, and the outer conductor 31A is connected to the ground portion 13A. Similarly, the inner conductor 32B is connected to the excitation portion 12B, and the outer conductor 31B is connected to the ground portion 13B. Therefore, the antenna casing integration structure of the second embodiment can specifically implement a plurality of antenna functions.

Similarly, the characteristics of the generated resonant modes can be changed by adjusting the relative lateral positions of the antenna slots 21A, 21B at the relative lateral positions of the antenna slots 21A, 21B, thereby achieving performance optimization according to actual needs, such as a lower VSWR. And higher radiation efficiency.

In particular, the multi-antenna function of the second embodiment of the present invention is well suited for applications that require multiple different frequency bands for transmitting wireless communication data, such as different transmission bands of 3G, 4G, WiFi, and Bluetooth (Bluetooth) in mobile phones.

With further reference to the fifth figure, a schematic diagram of the antenna chassis integrated structure of the third embodiment of the present invention is similar to the second embodiment of the fourth figure, and is composed of a plurality of antenna integrating units 10C and 10D (only two antennas are shown here) The integrated unit is configured for convenience and the metal casing 20 is configured to connect a plurality of coaxial transmission lines 30 C, 30D (only two coaxial transmission lines are shown here for convenience of explanation), wherein the antenna integration units 10C, 10D are arranged in metal Different positions of the casing 20, such as the antenna integration unit 10C on the left side and the antenna integration unit 10D on the right side, and the metal casing 20C has a plurality of antenna slots 21C, 21D (only two antenna slots are shown here for convenience) And the structure of each antenna integrating unit 10C, 10D is similar to the antenna integrating unit 10A, 10B of the second embodiment in the fourth figure.

It should be noted, however, that the antenna integration units 10C, 10D of the fifth diagram are disposed closer to the lower edge of the metal casing 20, and the antenna integration units 10A, 10B of the fourth diagram are disposed closer to the metal casing 20. The lower edge, the upper and lower placement methods are also different, however, its position and orientation are only used to illustrate the exemplary example of the creation, and are not intended to limit the scope of the creation, that is, the antenna integration unit 10C, 10D The position, orientation, and position of the internal components can be arbitrarily designed according to actual needs.

Further, the antenna integration unit 10C includes an antenna body 11C, an excitation portion 12C, a ground portion 13C, an impedance matching portion 14C, and a ground conductor 15C, and the antenna integration unit 10D includes an antenna body 11D, an excitation portion 12D, a ground portion 13D, and an impedance matching portion 14D. , grounding conductor 15D.

Further, the coaxial transmission lines 30 C, 30D are coaxial transmission lines 30A, 30B similar to the second embodiment in the fourth figure, that is, the coaxial transmission line 30 C includes the outer conductor 31C and the inner conductor 32C, and the coaxial transmission line 30D includes the outer conductor 31D. , internal conductor 32D. Further, the inner conductor 32C is connected to the excitation portion 12C, and the outer conductor 31C is connected to the ground portion 13C. Similarly, the inner conductor 32D is connected to the excitation portion 12D, and the outer conductor 31D is connected to the ground portion 13D.

Since the other elements of the third embodiment have the features similar to those of the second embodiment described above, the functions of the plurality of antennas are also implemented, and thus will not be described again.

In summary, the main feature of the present invention is that the resonant frequency band can be further controlled by adjusting the relative position of the excitation portion , the ground portion and the impedance matching portion, the geometry, and the length and width of the antenna slot on the metal casing. And bandwidth to form an antenna that conforms to various wireless communication applications.

Another feature of the present invention is that a plurality of integrated units having the same structure can be configured to correspond to a plurality of antenna slots provided in the metal casing to meet the requirements of wireless communication applications requiring multiple antennas in the mobile device. Therefore, this creation is quite industrially useful.

The above description is only for the purpose of explaining the preferred embodiment of the present invention, and is not intended to impose any form of limitation on the creation, so that any modification or alteration of the creation made in the same creative spirit is provided. , should still be included in the scope of protection of this creative intent.

10, 10A, 10B, 10C, 10D‧‧‧ antenna integration unit
11, 11A, 11B, 11C, 11D‧‧‧ antenna body
12, 12A, 12B, 12C, 12D‧‧‧ stimulating department
13, 13A, 13B, 13C, 13D‧‧‧ Grounding Department
14, 14A, 14B, 14C, 14D‧‧‧ impedance matching
14T‧‧‧ lateral extension
15, 15A, 15B, 15C, 15D‧‧‧ grounding conductor
20‧‧‧Metal case
21, 21A, 21B, 21C, 21D‧‧‧ antenna slots
30, 30A, 30B, 30C, 30D‧‧‧ coaxial transmission line
31, 31A, 31B, 31C, 31D‧‧‧ external conductor
32, 32A, 32B, 32C, 32D‧‧‧ internal conductor

The first figure shows a schematic diagram of an integrated structure of an antenna casing according to the first embodiment of the present invention. The second figure shows the voltage standing wave ratio of the integrated structure of the antenna housing of the present invention. The third figure shows the radiation efficiency of the integrated structure of the antenna housing of the present invention. The fourth figure shows a schematic diagram of the integrated structure of the antenna casing according to the second embodiment of the present invention. The fifth figure shows a schematic view of the integrated structure of the antenna casing according to the third embodiment of the present creation.

10‧‧‧Antenna integration unit

11‧‧‧Antenna body

12‧‧‧Exciting Department

13‧‧‧ Grounding Department

14‧‧‧Impedance matching department

14T‧‧‧ lateral extension

15‧‧‧ Grounding conductor

20‧‧‧Metal case

21‧‧‧Antenna slot

30‧‧‧ coaxial transmission line

31‧‧‧External conductor

32‧‧‧Internal conductor

Claims (4)

An antenna casing integration structure includes: an antenna integration unit having electrical conductivity, connecting a coaxial transmission line to wirelessly transmit and receive a signal, the coaxial transmission line including an inner conductor and an outer conductor; and a metal casing, Conductively used for attaching and integrating the antenna integration unit, and the metal casing has an antenna slot, wherein the antenna integration unit and the metal casing are electrically conductive and are the same or The antenna integration unit includes an antenna body, an excitation portion, a ground portion, an impedance matching portion, and a ground conductor. The antenna slot is covered by the antenna body for radiating as an antenna. a resonance mode is generated in a resonant cavity, the excitation portion, the ground portion, and the impedance matching portion are disposed on the antenna body, and the excitation portion, the impedance matching portion, and the ground portion are located on a conductive surface of the antenna body The excitation portion and the ground portion are separated from each other, and the ground portion is electrically connected to the impedance matching portion, and the excitation portion and the impedance are The position corresponding to the portion with the slot antenna configuration, the inner conductor is connected to the excitation portion, the outer conductor is connected to the ground portion of the antenna slot so as to excite the resonant modes generated. The antenna housing integrated structure according to claim 1, wherein the impedance matching portion includes a lateral extending portion extending laterally from a region of the impedance matching portion, and the lateral extending portion is corresponding to the antenna slot . An antenna casing integration structure includes: a plurality of antenna integration units having electrical conductivity, each antenna integration unit connecting a corresponding coaxial transmission line to wirelessly transmit and receive signal signals, each of the coaxial transmission lines including an inner conductor And an outer conductor; and a metal casing electrically conductive for bonding the antenna integration unit to be integrated, and the metal casing has a plurality of antenna slots, and each antenna slot is Corresponding to the corresponding antenna integration unit, wherein the antenna integration unit and the metal casing are electrically conductive and are composed of the same or different conductive materials, each of the antenna integration units including an antenna body, An excitation portion, a grounding portion, an impedance matching portion and a grounding conductor, each of the antenna slots being covered by a corresponding antenna body of the antenna integrating unit for generating as a resonant cavity radiated by the antenna a resonant mode, the excitation portion of the antenna integration unit, the ground portion, and the impedance matching portion are antennas electrically connected to the antenna integration unit The excitation portion and the impedance matching portion of the antenna integration unit are conductive surfaces of the antenna body of the antenna integration unit, and the excitation portion and the ground portion are separated from each other, and the ground portion and the impedance matching portion are Electrically connecting, the excitation portion of the antenna integration unit, the position of the impedance matching portion is corresponding to the corresponding antenna slot, and the inner conductor of each of the coaxial transmission lines is connected to the corresponding antenna The excitation portion of the integrated unit, the outer conductor of each of the coaxial transmission lines is connected to the corresponding ground portion of the antenna integration unit, thereby exciting the corresponding antenna slot to generate the resonant mode. The antenna housing integrated structure according to claim 3, wherein the impedance matching portion of the antenna integrating unit includes a lateral extending portion extending laterally from the impedance matching portion, and the lateral extending portion corresponds to Set the antenna slot.