TWI646726B - Mobile device - Google Patents

Abstract

A mobile device includes a mechanism component, an antenna component, and a reinforcement component. The mechanism component has a conductor region and a non-conductor region. The antenna element is adjacent to the non-conductor region of the mechanism element. The reinforcing member includes a dielectric substrate, a first metal portion, and a second metal portion. The first metal portion and the second metal portion are disposed on the dielectric substrate. The second metal portion is coupled to the first metal portion. The second metal portion is remote from the antenna element when the stiffening element is operated in an off mode. When the stiffening element is operated in an activation mode, the second metal portion is adjacent to the antenna element to enhance the radiation efficiency of the antenna element.

Description

Mobile device

The present invention relates to a mobile device, and more particularly to a radiation enhancement mechanism for a mobile device and its antenna elements.

With the development of mobile communication technologies, mobile devices have become more and more popular in recent years, such as portable computers, mobile phones, multimedia players, and other portable electronic devices with mixed functions. In order to meet people's needs, mobile devices usually have the function of wireless communication. Some cover long-range wireless communication range, for example, mobile phones use 2G, 3G, LTE (Long Term Evolution) systems and the 700MHz, 850MHz, 900MHz, 1800MHz, 1900MHz, 2100MHz, 2300MHz and 2500MHz bands used for communication, and Some cover short-range wireless communication ranges, such as Wi-Fi, Bluetooth systems using 2.4GHz, 5.2GHz and 5.8GHz bands for communication.

The antenna supporting wireless communication (Antenna) is an indispensable component in mobile devices. Since the internal space of mobile devices is often very small and insufficient to accommodate antennas with high radiation efficiency, some prior art proposals have been made to use external antennas in order to improve the communication quality of mobile devices. However, external antennas often face problems of inconvenience in carrying and unsightly appearance. In view of this, it is necessary to propose a new design approach to solve the dilemma of the prior art.

In a preferred embodiment, the present invention provides a mobile device comprising: a mechanism component having a conductor region and a non-conductor region; an antenna element adjacent to the non-conductor region of the mechanism component; and a stiffening component, including a dielectric substrate; a first metal portion disposed on the dielectric substrate; and a second metal portion disposed on the dielectric substrate and coupled to the first metal portion; wherein the reinforcing member operates on the In the off mode, the second metal portion is remote from the antenna element; wherein when the strengthening element is operated in an activation mode, the second metal portion is adjacent to the antenna element to enhance the radiation efficiency of the antenna element.

In some embodiments, the dielectric substrate of the stiffening element has a fixed point that is coupled to the non-conductor region of the mechanical component such that the stiffening element can rotate along the fixed point.

In some embodiments, the first metal portion is substantially straight strip shape.

In some embodiments, the second metal portion is substantially in the shape of an L.

In some embodiments, the antenna element encompasses a low frequency band and a high frequency band between about 2400 MHz and 2500 MHz, and the high frequency band is between about 5150 MHz and 5850 MHz.

In some embodiments, the length of the first metal portion is approximately equal to 0.25 times the wavelength of the low frequency band.

In some embodiments, the length of the second metal portion is approximately equal to 0.25 times the wavelength of the high frequency band.

In some embodiments, the antenna element is a planar inverted F-shaped antenna.

In some embodiments, the antenna element is a monopole antenna.

In some embodiments, the mechanism component is a cover case of a notebook computer, the conductor area of the mechanism component is a metal portion of the cover case, and the non-conductor area of the mechanism component is an antenna window.

100, 400, 500‧‧‧ mobile devices

110‧‧‧ institutional components

111‧‧‧Conductor area of the mechanical component

112‧‧‧ Non-conductor areas of mechanical components

120, 420‧‧‧ antenna elements

121, 421‧‧‧Antenna substrate

122, 422‧‧‧ Grounding area of the antenna substrate

123, 423‧‧‧ clearance area of the antenna substrate

124, 424‧‧‧First Radiation Branch

125, 425‧‧‧second radiation branch

126, 426‧‧‧Feed the connecting branch

127‧‧‧Short circuit

130‧‧‧Strength components

140‧‧‧Media substrate

150‧‧‧First Metals Department

151‧‧‧ First end of the first metal department

152‧‧‧ second end of the first metal part

160‧‧‧Second Metals Department

161‧‧‧ First end of the second metal department

162‧‧‧ second end of the second metal part

190‧‧‧Signal source

570‧‧‧Note computer cover

580‧‧‧Note computer monitor border

590‧‧‧Note computer display

CC1‧‧‧ first curve

CC2‧‧‧second curve

CP‧‧‧Central connection point

L1, L2, L3, L4, L5, L6‧‧‧ length

G1‧‧‧ gap

GC1‧‧‧ coupling gap

RP‧‧‧ fixed point

1A is a schematic view showing a mobile device according to an embodiment of the present invention; FIG. 1B is a schematic view showing a mobile device according to another embodiment of the present invention; and FIG. 2A is a view showing an embodiment of the present invention. The return loss map of the antenna element when the reinforcing component of the mobile device operates in the off mode; FIG. 2B shows the return loss of the antenna component when the reinforcing component of the mobile device operates in the startup mode according to another embodiment of the present invention Figure 3 is a diagram showing an antenna efficiency diagram of an antenna element when a reinforcing element of a mobile device operates in a closed mode or an activated mode according to an embodiment of the present invention; and Figure 4A shows an embodiment according to an embodiment of the present invention. A schematic diagram of a mobile device; FIG. 4B is a schematic diagram showing a mobile device according to another embodiment of the present invention; and FIG. 5 is a schematic diagram showing a mobile device according to an embodiment of the present invention.

In order to make the objects, features and advantages of the present invention more apparent, Specific embodiments of the invention are set forth below, and in conjunction with the drawings, the detailed description below.

Certain terms are used throughout the description and claims to refer to particular elements. Those skilled in the art will appreciate that a hardware manufacturer may refer to the same component by a different noun. The scope of the present specification and the patent application do not use the difference in the name as the means for distinguishing the elements, but the difference in function of the elements as the criterion for distinguishing. The words "including" and "including" as used throughout the specification and patent application are open-ended terms and should be interpreted as "including but not limited to". The term "substantially" means that within the acceptable error range, those skilled in the art will be able to solve the technical problems within a certain error range to achieve the basic technical effects. In addition, the term "coupled" is used in this specification to include any direct and indirect electrical connection means. Therefore, if a first device is coupled to a second device, the first device can be directly electrically connected to the second device, or indirectly connected to the second device via other devices or connection means. Two devices.

FIG. 1A is a schematic diagram showing a mobile device 100 according to an embodiment of the invention. FIG. 1B is a schematic diagram showing a mobile device 100 according to another embodiment of the present invention. For example, the mobile device 100 can be a tablet computer or a notebook computer. In the embodiment of FIGS. 1A and 1B, the mobile device 100 includes a mechanism element 110, an antenna element 120, and an enhancement element 130, wherein the reinforcement element 130 is used for The radiation efficiency of the antenna element 120 is selectively enhanced. In detail, the enhancement component 130 can operate in a Disable Mode or a startup mode. (Enable Mode). The embodiment of Fig. 1A is a structural diagram of the mobile device 100 when the reinforcing element 130 is operated in the off mode, and the embodiment of Fig. 1B is a structural view of the mobile device 100 when the reinforcing element 130 is operated in the startup mode. Please refer to Figures 1A and 1B together to understand the present invention. It should be noted that although not shown in FIGS. 1A, 1B, and the figure, the mobile device 100 may further include other components, such as a processor, a touch control panel, and a speaker. (Speaker), a battery module (Battery Module), and a housing (Housing).

The mechanism component 110 has a Conductive Region 111 and a Nonconductive Region 112. The mechanism element 110 can be interposed between the antenna element 120 and the strengthening element 130. For example, the antenna element 120 can face one of the front surfaces of the mechanism element 110, and the reinforcement element 130 can face one of the rear surfaces of the mechanism element 110. The antenna element 120 is disposed adjacent to the non-conductor region 112 of the mechanism element 110 such that electromagnetic waves transmitted and received by the antenna element 120 can pass through the non-conductor region 112 for transmission. It is to be understood that the kind and shape of the antenna element 120 are not particularly limited in the present invention. For example, the antenna element 120 can be a Planar Inverted F Antenna (PIFA), a Monopole Antenna, a Patch Antenna, or a Chip Antenna. . In some embodiments, the antenna element 120 can cover a low frequency band and a high frequency band, wherein the aforementioned low frequency band is between about 2400 MHz and 2500 MHz, and the aforementioned high frequency band is between about 5150 MHz and 5850 MHz. Therefore, the antenna element 120 can support at least WLAN (Wireless Local Area Networks) 2.4 GHz/5 GHz dual-band bandwidth operation.

The reinforcing component 130 includes a dielectric substrate 140, a first metal portion 150, and a second metal portion 160. The dielectric substrate 140 can be an FR4 substrate (Flame Retardant 4) or a printed circuit board (PCB). The first metal portion 150 and the second metal portion 160 are disposed on the dielectric substrate 140, wherein the first metal portion 150 and the second metal portion 160 are in a floating state, that is, not coupled to any other ground. element. The aforementioned floating design reduces the manufacturing complexity of the stiffening element 130. The first metal portion 150 may be substantially straight. The first metal portion 150 has a first end 151 and a second end 152. The first end 151 and the second end 152 of the first metal portion 150 are open ends. The second metal portion 160 may be substantially in an L shape. The second metal portion 160 has a first end 161 and a second end 162, wherein the first end 161 of the second metal portion 160 is coupled to a central connection point CP on the first metal portion 150, and the second metal The second end 162 of the portion 160 is an open end. The central connection point CP can be located at the center of both the first end 151 and the second end 152 of the first metal portion 150. The first end 161 of the second metal portion 160 can extend at least partially perpendicular to the first metal portion 150. The second end 162 of the second metal portion 160 can extend at least partially parallel to the first metal portion 150.

In terms of component size, the length L1 of the first metal portion 150 is greater than the length L2 of the second metal portion 160. For example, the aforementioned length L1 may be about 2 to 4 times the aforementioned length L2. In detail, the length L1 of the first metal portion 150 may be substantially equal to 0.25 times the wavelength (λ/4) of the low frequency band of the antenna element 120, and the length L2 of the second metal portion 160 may be substantially equal to the high frequency band of the antenna element 120. 0.25 times the wavelength (λ/4). The above dimensional design helps to increase the coupling effect between the stiffening element 130 and the antenna element 120.

In some embodiments, the dielectric substrate 140 of the stiffening element 130 has a fixed point RP, wherein the fixed point RP is coupled to the non-conductor region 112 of the mechanical component 110 such that the entire stiffening component 130 can rotate along the fixed point RP. . For example, a rotating shaft member can be used to penetrate the fixed point RP of the dielectric substrate 140 and the non-conductor region 112 of the mechanism member 110, and the rotating shaft member can be implemented by a non-conductor screw. Under this design, the reinforcing member 130 can perform a rotation of 0 to 90 degrees using the fixed point RP as a center of the rotating shaft, so that the reinforcing member 130 can selectively move away from or approach the antenna element 120.

As shown in FIG. 1A, when the stiffening element 130 is operated in the off mode, the second metal portion 160 of the stiffening element 130 is remote from the antenna element 120. For example, the gap G1 of the second metal portion 160 and the antenna element 120 may have a width of about 6 mm. At this time, the reinforcing member 130 may be hidden inside or behind the mechanism member 110 to beautify the overall device appearance of the mobile device 100. Conversely, as shown in FIG. 1B, when the stiffening element 130 is operated in the start mode, the second metal portion 160 of the stiffening element 130 is adjacent to the antenna element 120. For example, a coupling gap GCl1 may be formed between the second metal portion 160 and the antenna element 120, wherein the coupling gap GC1 may have a width of between about 2 mm and 3 mm. At this time, the first metal portion 150 and the second metal portion 160 of the reinforcing member 130 may be coupled and excited by the antenna element 120, thereby improving the radiation efficiency of the antenna element 120.

In the embodiment of Figures 1A and 1B, the antenna element 120 is a planar inverted F-shaped antenna, but is merely illustrative and not limiting. The antenna element 120 can include an antenna substrate 121, a first radiation branch 124, a second radiation branch 125, a feed connection branch 126, and a short circuit branch 127. The antenna substrate 121 can be an FR4 substrate, a printed circuit board, or a flexible printed circuit board. (Flexible Printed Circuit Board, FPCB). The antenna substrate 121 has a grounding region 122 and a clearance area 123. The grounding region 122 can be a ground copper foil and coupled to the conductor region 111 of the mechanism component 110, and the clearance area 123 is a non-metallic region. . The first radiation branch 124, the second radiation branch 125, the feed connection branch 126, and the short circuit branch 127 are made of a conductor material and are disposed on the clearance area 123 of the antenna substrate 121. The first radiating branch 124 is coupled to a signal source 190 via a feed connection branch 126 , and the second radiating branch 125 is also coupled to the signal source 190 via a feed connection branch 126 . The signal source 190 can be a radio frequency module that can be used to generate a transmit signal or process a receive signal. The combination of the first radiation branch 124, the second radiation branch 125, and the feed connection branch 126 may be substantially T-shaped. The feed connection branch 126 is further coupled to the ground region 122 of the antenna substrate 121 via the short circuit branch 127. The shorting branch 127 may be substantially in the shape of an L. In terms of component size, the length L3 of the first radiation branch 124 is greater than the length L4 of the second radiation branch 125. For example, the aforementioned length L3 may be 2 to 3 times the aforementioned length L4. In detail, the length L3 of the first radiation branch 124 may be substantially equal to 0.25 times the wavelength (λ/4) of the low frequency band of the antenna element 120, and the length L4 of the second radiation branch 125 may be substantially equal to the height of the antenna element 120. 0.25 times the wavelength of the frequency band (λ/4). When the stiffening element 130 is operated in the startup mode, the second metal portion 160 of the stiffening element 130 resonates with both the second radiating branch 125 of the antenna element 120 such that the first metal portion 150 and the second metal portion 160 can be considered as One of the antenna elements 120 extends the radiating element.

FIG. 2A is a diagram showing the return loss of the antenna element 120 when the reinforcing component 130 of the mobile device 100 operates in the off mode according to an embodiment of the invention. Return Loss diagram, and FIG. 2B is a diagram showing the return loss of the antenna element 120 when the reinforcing component 130 of the mobile device 100 operates in the startup mode according to another embodiment of the present invention, wherein the horizontal axis represents the operating frequency ( The MHz axis represents the return loss (dB). Comparing the measurement results of the 2A and 2B graphs, it can be found that when the reinforcing element 130 is activated, the resonant modes of the antenna element 120 in the aforementioned high frequency band and low frequency band are significantly improved (that is, the return loss curve becomes Deeper down).

3 is a diagram showing an Antenna Efficiency of the antenna element 120 when the reinforcing component 130 of the mobile device 100 operates in the off mode or the startup mode according to an embodiment of the present invention, wherein the horizontal axis represents the operating frequency (MHz). The vertical axis represents the antenna efficiency (dB). As shown in FIG. 3, a first curve CC1 represents the operational characteristics of the antenna element 120 when the stiffening element 130 operates in the off mode, and a second curve CC2 represents the operational characteristics of the antenna element 120 when the stiffening element 130 operates in the start mode. According to the measurement result of FIG. 3, when the strengthening component 130 is activated, the antenna efficiency of the antenna component 120 in the aforementioned low frequency band can be improved by about 1 dB, and the antenna efficiency in the aforementioned high frequency band can be improved by about 0.6 dB. This can meet the practical application requirements of general mobile communication devices.

Figure 4A is a schematic diagram showing a mobile device 400 in accordance with an embodiment of the present invention. Figure 4B is a schematic diagram showing a mobile device 400 in accordance with another embodiment of the present invention. 4A and 4B are similar to FIGS. 1A and 1B, and the difference between the two is that one of the antenna elements 420 of the mobile device 400 of FIG. 4 is a monopole antenna. The antenna element 420 includes an antenna substrate 421, a first radiation branch 424, a second radiation branch 425, and a feed connection branch 426. The antenna substrate 421 has a ground area 422 and a clearance area 423. First radiation branch 424, first The second radiation branch 425 and the feed connection branch 426 are both disposed on the clearance area 423 of the antenna substrate 421. The first radiating branch 424 is coupled to the signal source 190 via the feed connection branch 426 and the second radiating branch 425 is coupled to the signal source 190 via the feed connection branch 426. The combination of the first radiation branch 424, the second radiation branch 425, and the feed connection branch 426 can be generally T-shaped. It must be noted that the antenna element 420 of Figure 4 does not include any shorting branches. The length L5 of the first radiation branch 424 is greater than the length L6 of the second radiation branch 425. For example, the aforementioned length L5 may be 2 to 3 times the aforementioned length L6. In detail, the length L5 of the first radiation branch 424 may be substantially equal to 0.25 times the wavelength (λ/4) of the low frequency band of the antenna element 420, and the length L6 of the second radiation branch 425 may be substantially equal to the height of the antenna element 420. 0.25 times the wavelength of the frequency band (λ/4). The remaining features of the mobile device 400 of FIGS. 4A and 4B are similar to those of the mobile device 100 of FIGS. 1A and 1B. Therefore, the second embodiment can achieve similar operational effects. It must be understood that in addition to the structures shown in Figures 1A, 1B, 4A, 4B, the antenna elements 120, 420 may also include configurations of other different radiation branches to meet various design requirements.

Figure 5 is a schematic diagram showing a mobile device 500 in accordance with an embodiment of the present invention. The mobile device 500 is a notebook computer, and the present invention can be implemented on the notebook computer. In some embodiments, the aforementioned mechanism component 110 is an upper cover housing 570 (also commonly referred to as "A component" in a notebook computer), wherein the conductor region 111 of the mechanism component 110 is The upper cover 570 has a metal portion, and the non-conductor region 112 of the mechanism member 110 is an antenna window. For example, the antenna window may be filled with a plastic material so that electromagnetic waves of the antenna element 120 can pass. In other embodiments, the aforementioned mechanism component 110 is one of the display sides of the notebook computer. A display frame 580 (also known as a "B piece" in a notebook computer), the conductor area 111 of the mechanism component 110 is a display 590 (usually made of a metal material), and the mechanism component 110 is not Conductor region 112 is a plastic portion of display bezel 580.

The present invention provides a radiation enhancement mechanism for a mobile device and its antenna elements. When the reinforcing element of the mobile device operates in the start mode, it can resonate with the antenna element, thereby improving the radiation efficiency of the antenna element. In addition, when the reinforcing element of the mobile device operates in the off mode, it can be hidden inside or behind the mechanism element, so that the appearance of the device of the mobile device can be beautified. In short, the present invention has the advantages of high antenna efficiency and stylish appearance, and is therefore suitable for use in various miniaturized mobile communication devices.

It is to be noted that the above-described component sizes, component shapes, and frequency ranges are not limitations of the present invention. The antenna designer can adjust these settings according to different needs. The mobile device and the antenna element of the present invention are not limited to the state illustrated in Figures 1-5. The present invention may include only any one or more of the features of any one or a plurality of embodiments of Figures 1-5. In other words, not all of the illustrated features must be implemented simultaneously in the mobile device and antenna elements of the present invention.

The ordinal numbers in this specification and the scope of the patent application, such as "first", "second", "third", etc., have no sequential relationship with each other, and are only used to indicate that two are identical. Different components of the name.

The present invention has been described above with reference to the preferred embodiments thereof, and is not intended to limit the scope of the present invention, and the invention may be modified and modified without departing from the spirit and scope of the invention. Protection of the invention The scope is subject to the definition of the scope of the patent application attached.

Claims (9)

A mobile device comprising: a mechanism component having a conductor region and a non-conductor region; an antenna element adjacent to the non-conductor region of the mechanism component; and a reinforcing component comprising: a dielectric substrate; a first metal portion And disposed on the dielectric substrate; and a second metal portion disposed on the dielectric substrate and coupled to the first metal portion; wherein the second metal portion is when the reinforcing member operates in a closed mode Far from the antenna element; wherein when the strengthening element is operated in an activation mode, the second metal portion is adjacent to the antenna element to enhance radiation efficiency of the antenna element; wherein the antenna element covers a low frequency band and a high frequency band The low frequency band is between about 2400 MHz and 2500 MHz, and the high frequency band is between about 5150 MHz and 5850 MHz; wherein the length of the first metal portion is approximately equal to 0.25 times the wavelength of the low frequency band. The mobile device of claim 1, wherein the dielectric substrate of the reinforcing component has a fixed point, and the fixed point is connected to the non-conductor region of the mechanical component, such that the reinforcing component can be fixed along the fixing Click to rotate. The mobile device of claim 1, wherein the first metal portion is substantially straight. The mobile device according to claim 1, wherein the second gold The genus is roughly in the shape of an L. The mobile device of claim 1, wherein the second metal portion has a length substantially equal to 0.25 times the wavelength of the high frequency band. The mobile device of claim 1, wherein the antenna element is a planar inverted F-shaped antenna. The mobile device of claim 1, wherein the antenna element is a monopole antenna. The mobile device of claim 1, wherein the mechanical component is a cover of a notebook computer, and the conductor region of the mechanical component is a metal portion of the upper cover, and the mechanical component is non- The conductor area is an antenna window. A mobile device comprising: a mechanism component having a conductor region and a non-conductor region; an antenna element adjacent to the non-conductor region of the mechanism component; and a reinforcing component comprising: a dielectric substrate; a first metal portion And disposed on the dielectric substrate; and a second metal portion disposed on the dielectric substrate and coupled to the first metal portion; wherein the second metal portion is when the reinforcing member operates in a closed mode Far from the antenna element; wherein when the strengthening element is operated in an activation mode, the second metal portion is adjacent to the antenna element to enhance radiation efficiency of the antenna element; wherein the antenna element covers a low frequency band and a high frequency band , the low frequency The band is between about 2400 MHz and 2500 MHz, and the high frequency band is between about 5150 MHz and 5850 MHz; wherein the length of the second metal portion is approximately equal to 0.25 times the wavelength of the high frequency band.