TWM452472U - Wireless device - Google Patents

Abstract

A wireless device includes a substrate and a coupling antenna, wherein the substrate includes a first side and a second side which corresponds to the first side and the length of the substrate's four sides are all longer than 105 mm, and the coupling antenna includes a first radiator and a second radiator. The first radiator is arranged on the first side of the substrate and connected to a signal feed point; the second radiator having a coupling gap with the first radiator is arranged on the second side of the substrate and connected to a ground point, where in the first radiator is configured for resonantly coupling with the second radiator in a specific band.

Description

Wireless device

The present invention relates to a wireless device, and more particularly to a wireless device having a coupled antenna.

With the advancement of wireless communication transmission technology, the functions of various related information products are becoming more and more advanced. From the past wired Internet access to the later wireless Internet access, the use of multi-band wireless transmission is now integrated, so that Netcom products have more functions. The antenna that affects the transmission efficiency of the wireless device is the antenna, and the coupling antenna that uses the two radiators to resonate to different frequencies has the advantages of micro and wide frequency.

In the past, the coupled antenna was a fixed-shaped antenna, and the two radiators were located on the same side of the substrate. There were various limitations in design, and the radiated frequency band could not cover the range of all the requirements of the fourth-generation (4G) Netcom products.

Therefore, in order to enhance the development of the industry, it is necessary to design a wireless device with good radiation efficiency and covering a wide frequency band and low complexity.

One aspect of the present invention is to provide a wireless device that utilizes a coupled antenna disposed on both sides of a substrate therein to enable the aforementioned wireless device to operate in an ultra-wideband frequency range.

An embodiment of the present invention relates to a wireless device including a substrate and a coupling antenna, wherein the substrate includes a first side and a second side opposite to the first side The face, and the lengths of the four sides thereof are each greater than 105 mm, and the coupled antenna includes the first radiator and the second radiator. The first radiator is disposed on the first surface of the substrate and connected to a signal feeding point; the second radiator is disposed on the second surface of the substrate and has a coupling gap with the first radiator, and is connected to a grounding point. The first radiation system is configured to resonate with the second radiator to resonate in a specific frequency band.

According to the technical content of the present invention, by applying the foregoing embodiments of the present invention, the wireless device disclosed in the present invention can achieve the wide frequency range required by the current Netcom products without additional cost.

The embodiments are described in detail below with reference to the drawings, but the embodiments are not intended to limit the scope of the present invention, and the description of the structural operation is not intended to limit the order of execution thereof, and any components are recombined. The structure and the devices with equal efficiency are all covered by the novel. In addition, the drawings are for illustrative purposes only and are not drawn to the original dimensions.

The terms “first”, “second”, etc. used in this document are not specifically intended to refer to the order or order, nor to limit the present invention, but merely to distinguish components described in the same technical terms. Or just operate.

The following new embodiments of the present invention disclose a wireless device that includes a wide range of coupled antennas in a wide range of radiated frequency bands, and the radiated frequency range of the coupled antenna covers all frequency bands required for the next generation of mobile wireless broadband technology. It can be applied to a wide variety of Netcom products (for example, wireless base stations of different sizes) and has high industrial utilization.

FIG. 1 is a diagram showing a wireless device according to an embodiment of the present invention. intention. The wireless device 100 includes a substrate 120 and a coupling antenna 140. The substrate 120 includes a first surface 220 and a second surface 320 opposite to the first surface 220, and the lengths of the four sides thereof are each greater than 105 millimeters (mm), and the coupling antenna 140 is disposed in the The first radiator 240 on the first surface 220 of the substrate 120 and the second radiator 340 disposed on the second surface 320 of the substrate 120 and having a coupling gap 142 with the first radiator 240.

As can be seen from FIG. 1 , the first radiator 240 and the second radiator 340 of the coupling antenna 140 are respectively disposed on opposite sides of the substrate 120 , and then the wireless device 100 is further introduced in FIGS. 2 and 3 . .

2 is a first side view of a substrate of a wireless device according to an embodiment of the present invention, and FIG. 3 is a second side view of the substrate according to the wireless device of FIG. 2. Referring to FIG. 2 and FIG. 3 simultaneously, as shown in FIG. 2, the first radiator 240 of the coupling antenna 140 is disposed on the first surface 220 of the substrate 120, and is connected to the signal feeding point 242, and the signal feeding point is The 242 can be fed into the coupled antenna 140 (see Figure 1) in a variety of ways to receive signals from the outside. As can be seen from FIG. 3, the second radiator 340 of the coupling antenna 140 is disposed on the second surface 320 of the substrate 120, and has the aforementioned coupling gap 142 between the first radiator 240 (as shown in FIG. 1). ) and connect the grounding point 342. With the coupling gap 142, the first radiator 240 in FIG. 2 and the second radiator 340 in FIG. 3 can be coupled to resonate in a specific frequency band (for example, 700 MHz to 1.5 GHz).

Here, the coupling gap 142 between the first radiator 240 and the second radiator 340 may be equal to the thickness of the substrate 120 or smaller than the thickness of the substrate 120; in other words, the first radiator 240 and the second radiator 340. The size of the coupling gap 142 can be adjusted according to actual needs, so that A radiator 240 and the second radiator 340 can be coupled to resonate to a desired specific frequency band.

In one embodiment, the range of frequencies that the coupled antenna 140 can radiate covers all frequency points within the range of 700 MHz to 3.5 GHz. Specifically, the radiation band of the first radiator 240 in FIG. 2 covers a high frequency portion of the range of the band that can be radiated (for example, 1.5 GHz to 3.5 GHz), and the first radiator 240 and the third figure The radiating band of the second radiator 340 coupled to the resonance covers a low frequency portion of the range of frequencies that can be radiated (for example, 700 MHz to 1.5 GHz).

It should be noted that the high and low frequency division of the frequency band radiated by the coupling antenna 140 is only an embodiment, and is not intended to limit the present invention. Those skilled in the art may need to use the frequency range of 700 MHz to 3.5 GHz. Adjust the range of the high frequency band and the low frequency band.

In the present embodiment, the first radiator 240 is a triangular radiator, and a apex angle is connected to the signal feeding point 242, and the second radiator 340 is an L-shaped radiator, but is not limited thereto. In an embodiment, the first radiator 240 can be a polygonal radiator. In still another embodiment, the first radiator 240 may also be an isosceles triangular radiator, and the apex angle between two adjacent equilateral edges is connected to the signal feeding point 242, so that the signal feeding point 242 is located in the first radiator. Central to 240. In practice, the materials of the first radiator 240 and the second radiator 340 are electrically conductive metals, such as copper foil.

In addition, in the embodiment, when the opposite side 244 of the apex angle of the first radiator 240 connected to the signal feeding point 242 is shortened, the range of the frequency band that the first radiator 240 can radiate moves to a high frequency (for example: from the original 1.5GHz~2.5GHz offset to 2.5GHz~3.5GHz); similarly, when used as L-shaped spokes When the long end 344 of the second radiator 340 of the projectile is shortened, the range of the radiated frequency band in which the first radiator 240 and the second radiator 340 are coupled to each other also moves to a high frequency (for example, from the original 700 MHz to 800 MHz to 800MHz~900MHz).

Therefore, when the coupling antenna 140 is designed, the opposite side 244 of the apex angle of the first radiator 240 connected to the signal feeding point 242 and the long end 344 of the second radiator 340 can be elastically adjusted according to the required radiation frequency band. Meet the range of radiated bands to be covered. It should be noted that the above examples are only an embodiment, and are not intended to limit the present invention. In actual situations, the range of the radiated frequency bands still depends on various factors such as product size, substrate size, substrate thickness, and the like. .

In one embodiment, the substrate 120 (see FIG. 1) can be a printed circuit board having a thickness between about 0.6 mm and 1.5 mm. Depending on the substrate thickness and size, as described above, the first radiation can be adjusted. The body 240 connects the opposite side 244 of the top corner of the signal feed point 242 with the long end 344 of the second radiator 340 and the coupling gap 142 of the two (as shown in FIG. 1) to achieve the desired range of coupling resonance frequency bands. Not limited to the size and thickness of the substrate.

The substrate 120 may further include a first metal clearing region 260, a first circuit region 280 (see FIG. 2), a second metal clearing region 360, and a second circuit region 380 (see FIG. 3). As shown in FIG. 2, the first metal clearing region 260 is located at a first corner of the first surface 220 of the substrate 120 and is formed by two adjacent sides of the substrate 120, and the first radiator 240 of the antenna 140 is coupled. The first circuit region 280 is different from the first metal clearance region 260 and is also located on the first surface 220 of the substrate 120.

Since the first metal clearance area 260 is adjacent to the first side 220 of the substrate 120 When the two adjacent sides of the first radiator 240 radiate the signal fed from the signal feeding point 242, at least two sides of the first metal clearance area 260 do not correspond to the metal, so the two sides are No metal reflection or absorption of radiation signals can occur, which in turn increases the radiation efficiency.

Similarly, as shown in FIG. 3, the second metal clearance area 360 is located on the second side 320 of the substrate 120 opposite to the second corner of the first corner, formed by two adjacent sides of the substrate 120, and coupled The second radiator 340 of the antenna 140 is disposed therein; and the second circuit region 380 is different from the second metal clearance 360 and is also located on the second surface 320 of the substrate 120.

Since the first metal clearance area 260 and the second metal clearance area 360 are adjacent to the same sides of the first surface 220 and the second surface 320 of the substrate 120, the first radiator 240 and the second radiator 340 are self-injected to the signal. When the signal fed by 242 is coupled and resonated and radiated, at least the same sides of the first metal clearance area 260 and the second metal clearance area 360 do not correspond to the metal, and no metal reflection or absorption of the radiation signal occurs on the two sides. The situation, which in turn increases the radiation efficiency.

In addition, as shown in FIG. 3, the end of the second radiator 340 is connected to the grounding point 342, and the grounding point 342 can be connected to the grounding terminal or the grounding portion (not shown) in the second circuit region 380, so that all the grounding is The regions are connected together such that the first radiator 240 and the second radiator 340 can be coupled to resonate to provide good low frequency radiation performance.

In an embodiment of the present invention, the length L of the first metal clearance area 260 and the second metal clearance area 360 is greater than 60 millimeters (mm) and the width W is greater than 20 millimeters, which further enhances the radiation performance.

FIG. 4 is a diagram showing a wireless device internal coupling according to an embodiment of the present invention. Schematic diagram of the standing wave ratio of the combined antenna. As can be seen from Fig. 4, the VSWR of the coupled antenna 140 in Fig. 1 is about within a value of 3 between frequencies of 700 MHz and 3.5 MHz. After testing, the coupling antenna 140 has a radiation efficiency greater than 40% between the bands. This means that all frequency points between the bands have good radiation performance.

According to the embodiment of the present invention, the wireless device disclosed in the present invention directly uses the substrate originally provided in the device, and the appropriate substrate size, and the coupling antenna is designed in a circuit layout without increasing the excess cost. It has good radiation performance at all frequency points between 700MHz and 3.5GHz, and this band covers the range of frequency range of next-generation mobile wireless broadband technology and can be applied to a wide range of Netcom products.

Compared with the prior art, the two radiators of the coupled antenna in the wireless device disclosed in the present invention are disposed on opposite sides of the substrate, so that no space is needed when the coupling antenna is designed into the substrate of the product. Compared with the previous single-sided design, it has more changes and flexibility, and has a more competitive advantage in the market.

In addition, the shape of the radiator in the coupled antenna is also less restricted than in the past, and the position of the signal feed point can be appropriately adjusted by changing the shape of the first radiator in the coupled antenna according to different requirements, and finding the most for different products. Suitable for the design.

In summary, the present invention is not only more flexible in design than conventional techniques, but also has good radiation performance in an extremely wide frequency band without additional cost burden. It is worth mentioning that this frequency range covers all bands, covering the needs of fourth-generation (4G) Netcom products, meeting customer needs, and is in line with future trends.

Although the present invention has been disclosed in the above embodiments, it is not intended to limit the present invention. Any one skilled in the art can make various changes and retouchings without departing from the spirit and scope of the present invention. The scope is subject to the definition of the scope of the patent application attached.

100‧‧‧Wireless devices

120‧‧‧Substrate

140‧‧‧coupled antenna

142‧‧‧Coupling gap

220‧‧‧ first side

240, 340‧‧‧ radiator

242‧‧‧Signal feed point

244‧‧‧The first radiator is connected to the opposite side of the top corner of the signal feed point

260, 360‧‧‧ metal clearance area

280, 380‧‧‧ circuit area

320‧‧‧ second side

342‧‧‧ Grounding point

344‧‧‧The long end of the second radiator

L‧‧‧ length

W‧‧‧Width

FIG. 1 is a schematic diagram of a wireless device according to an embodiment of the present invention.

2 is a first side view of a substrate of a wireless device according to an embodiment of the present invention.

Figure 3 is a schematic view of the second side of the substrate according to the wireless device of Figure 2.

FIG. 4 is a schematic diagram showing the standing wave ratio of a coupled antenna in a wireless device according to an embodiment of the present invention.

100‧‧‧Wireless devices

120‧‧‧Substrate

140‧‧‧coupled antenna

142‧‧‧Coupling gap

220‧‧‧ first side

240‧‧‧First radiator

340‧‧‧Second radiator

320‧‧‧ second side

Claims (10)

A wireless device includes: a substrate including a first surface and a second surface opposite to the first surface, each of the four sides of the substrate has a length greater than 105 mm; and a coupled antenna comprising: a first a radiation body disposed on the first surface of the substrate and connected to a signal feeding point; and a second radiator disposed on the second surface of the substrate and having a space between the first radiator and the first radiator The coupling gap is coupled to a grounding point, wherein the first radiation system is configured to resonate with the second radiator to resonate in a specific frequency band. The wireless device of claim 1, wherein the substrate further comprises: a first metal clearance region, located at a first corner of the first surface, and formed by at least two adjacent sides of the substrate; Wherein the first radiation system is disposed in the first metal clearance region; and a second metal clearance region is located on the second surface opposite the second corner of the first corner and is composed of at least the two of the substrates Formed adjacent to the adjacent side, wherein the second radiation system is disposed in the second metal clearance area. The wireless device of claim 2, wherein the substrate further comprises: a first circuit region located on the first surface and different from the first metal clearance region; and a second circuit region located at the first On the two sides, and different from the second gold It is a clearance area. The wireless device of claim 2 or 3, wherein the length of the first metal clearance area or the second metal clearance area is greater than 60 mm, and the width of the first metal clearance area or the second metal clearance area is greater than 20 mm . The wireless device of claim 1, wherein the first radiator is a polygonal radiator, and the second radiator is an L-shaped radiator. The wireless device of claim 1, wherein the first radiator is a triangular radiator, and the second radiator is an L-shaped radiator. The wireless device of claim 6, wherein a top corner of the triangular radiator is connected to the signal feed point, and one end of the L-shaped radiator is connected to the ground point. The wireless device of claim 1, wherein the first radiator is an isosceles triangular radiator, and the second radiator is an L-shaped radiator. The wireless device of claim 8, wherein a top corner of two adjacent equilateral sides of the isosceles triangular radiator is connected to the signal feed point, and one end of the L-shaped radiator is connected to the ground point. The wireless device of claim 1, wherein the substrate is a print Brush the board.