TWI413486B - Communication apparatus - Google Patents

Abstract

A communication apparatus includes a cage having a metal surface, and a main body received in the cage. A first groove, a second groove, a third groove, a fourth groove, and a fifth groove are defined in the metal surface. The five grooves are connected in sequence. The first groove parallels with the third groove. The second groove parallels with the fourth groove. The first groove is perpendicular to the fourth groove. The first groove, the third groove, and the fifth groove are disposed between the second groove and the fourth groove. The first groove is shorter than the third groove. The second groove is shorter than the first groove and the fourth groove. An end of the fifth groove far away from the third groove is substantially coplanar with an end of the fourth groove far from the third groove. A first connecting point and a second connecting point are approximately disposed on the center of two opposite side walls of the first groove. The first connecting point and the second connecting point are used for connecting with the main body.

Description

Communication device

The present invention relates to the field of wireless communications, and in particular to a communication device having a metal casing.

In recent years, with the increasing popularity of communication devices, such as Personal Digital Assistant (PDA), mobile phones, and notebook computers, communication technologies closely related to communication devices are rapidly developing, and users can utilize wireless. The communication method is quick to complete the task of transferring data.

Generally, the wireless communication method requires an antenna module to be installed inside the communication device. If the outer casing of the communication device is made of a metal material, the capacitance effect is easily generated and the noise component of the signal transmitted and received by the antenna module is increased, resulting in an antenna module. The gain of the group is seriously attenuated, which affects the transceiver function of the antenna module. Therefore, the outer casing of the communication device is preferably made of a non-metal material, and in particular, the area of the outer casing of the communication device close to the antenna module is preferably non-metallic.

However, in the style of communication devices, the use of metal materials to create a sense of fashion and fashion has become a trend, and the use of metal materials has become a trend, which will affect the transmission and reception functions of antenna modules installed inside communication devices.

In view of this, it is necessary to provide a communication device that is not affected by the metal casing to affect the wireless transceiver function.

A communication device includes a housing and a main board housed in the housing. The housing has a metal surface, and the first surface, the second groove, the third groove, the fourth groove and the fifth groove are opened on the metal surface. The first groove, the second groove, the third groove, the fourth groove and the fifth groove are connected end to end in sequence. The first slot is parallel to the third slot, the second slot is parallel to the fourth slot, and the first slot is perpendicular to the second slot. The first groove, the third groove and the fifth groove are located between the second groove and the fourth groove. The first groove is shorter than the third groove, the second groove is shorter than the first groove; and the second groove is shorter than the fourth groove. The end of the fifth groove away from the third groove is flush with the end of the fourth groove away from the third groove. A middle portion of the opposite two long side walls of the first slot corresponds to a first connection point and a second connection point for electrically connecting to the main board.

The communication device transmits and receives a wireless signal of a fixed frequency band by using a metal case having a slot as an antenna module. In this way, the antenna module is not installed inside the communication device, so it is not affected by the metal casing when receiving the wireless signal.

10‧‧‧Communication device

12‧‧‧ motherboard

14‧‧‧Shell

140‧‧‧Metal surface

1461‧‧‧first slot

1461a‧‧‧First long side wall

1461b‧‧‧Second long side wall

1461c‧‧‧ first connection point

1461d‧‧‧second connection point

1462‧‧‧second trough

1463‧‧‧ third slot

1464‧‧‧fourth slot

1465‧‧‧5th slot

16‧‧‧Feed the conductive parts

18‧‧‧Grounding conductor

FIG. 1 is a schematic perspective structural view of a communication device according to a preferred embodiment.

2 is a schematic structural view of the slot shown in FIG. 1.

Fig. 3 is a view showing the size of the slot shown in Fig. 1.

4 is a measurement result of return loss of the metal surface shown in FIG. 1.

In the present embodiment, the antenna function is realized by forming a slot having a certain shape in the metal casing of the communication device. When the metal casing is affected by the wireless signal of a specific frequency, the local surface of the metal casing near the slot generates a corresponding induced current, and the main board of the communication device receives the induced current to generate corresponding information. In this way, the task of wirelessly transmitting data can be completed between the communication devices.

The present embodiment will be further described in detail below with reference to the accompanying drawings.

Referring to FIG. 1 , the communication device 10 includes a main board 12 , a housing 14 that houses the main board 12 , a feedthrough conductive member 16 , and a grounding conductive member 18 . The communication device 10 may be a mobile phone, a personal digital assistant, or a notebook computer. In the present embodiment, a mobile phone is used for explanation. The feed-in conductor 16 and the ground-conducting member 18 may be wires or conductive sheets. In the present embodiment, the feed-in conductor 16 and the ground-conducting member 18 are both wires.

The main board 12 is provided with a signal feed port 122 and a ground port 124.

Referring to FIG. 2 at the same time, the housing 14 includes a metal surface 140. The metal surface 140 defines a plurality of rectangular slotted holes: a first slot 1461, a second slot 1462, a third slot 1463, a fourth slot 1464, and a first slot. Five slots 1465.

The first slot 1461, the second slot 1462, the third slot 1463, the fourth slot 1464, and the fifth slot 1465 are sequentially connected. One end of the first slot 1461 is connected to one end of the second slot 1462, and the second slot 1462 is The other end is connected to one end of the third groove 1463, the other end of the third groove 1463 is connected to one end of the fourth groove 1464, and the other end of the fourth groove 1464 is connected to one end of the fifth groove 1465. The first groove 1461 is parallel to the third groove 1463, the second groove 1462 is parallel to the fourth groove 1464, and the first groove 1461 is perpendicular to the second groove 1462. The first groove 1461, the third groove 1463 and the fifth groove 1465 are located in the second groove 1462 and the fourth groove 1464 between. The end of the fifth slot 1465 away from the third slot 1463 is flush with the end of the fourth slot 1464 away from the third slot 1463.

The first groove 1461 is shorter than the third groove by 1463 and the first groove 1461 is equal to the third groove 1463. The second groove 1462 is shorter than the first groove 1461 and the second groove 1462 is wider than the first groove 1461. The second groove 1462 is shorter than the fourth groove 1464 and the fourth groove 1464 is equal to the third groove 1463. The fifth slot 1465 is as long as the second slot 1462, and the fifth slot 1465 is wider than the second slot 1462.

The first long side wall 1461a and the second long side wall 1461b of the first slot 1461 are respectively provided with a first connection point 1461c and a second connection point 1461d. The first connection point 1461c on the first long side wall 1461a is connected to the signal feed port 122 on the main board 12 by feeding the conductive member 16; the second connection point 1461d on the second long side wall 1461b is connected by the grounding conductor 18 The grounding 埠 124 on the main board 12 is connected. Thus, the metal face 140 can provide the received radio signal to the motherboard 12 for processing.

Please refer to FIG. 3 , which is a dimension drawing of the slot shown in FIG. 1 . The length of the first groove 1461 is 39 mm and the width is 1 mm; the distance between the first connection point 1461c and the second connection point 1461d and the second groove 1462 is 19 mm; the length of the second groove 1462 is 5 mm and the width is 3 mm; the third groove The length of 1463 is 44 mm and the width is 1 mm; the length of the fourth groove 1464 is 14 mm and the width is 1 mm; the length of the fifth groove 1465 is 5 mm and the width is 4 mm. The change in length and width of each of the above grooves may allow variation within a floating range of ±0.05 mm.

As shown in FIG. 4, which is the measurement result of the return loss of the metal surface 140, it can be seen from FIG. 4 that the resonance frequency of the metal surface 140 of the communication device 10 is 2.45 GHz. Its Return Loss is below -10dB from 2.35GHz to 2.59GHz. As shown by the above measurement results, the housing 14 can be used to receive frequencies as 2.45GHZ wireless signal.

The communication device 10 transmits and receives a wireless signal of a fixed frequency band by using a housing 14 having a slot as an antenna module. Thus, the antenna module is not installed inside the communication device 10, and thus is not affected by the metal casing 14 when receiving the wireless signal.

In summary, the present invention complies with the requirements of the invention patent and submits a patent application according to law. The above descriptions are only the preferred embodiments of the present invention, and those skilled in the art will be able to include equivalent modifications or variations in the spirit of the present invention.

10‧‧‧Communication device

12‧‧‧ motherboard

14‧‧‧Shell

140‧‧‧Metal surface

1461‧‧‧first slot

1461a‧‧‧First long side wall

1461b‧‧‧Second long side wall

1461c‧‧‧ first connection point

1461d‧‧‧second connection point

1462‧‧‧second trough

1463‧‧‧ third slot

1464‧‧‧fourth slot

1465‧‧‧5th slot

16‧‧‧Feed the conductive parts

18‧‧‧Grounding conductor

Claims (4)

A communication device includes a casing and a main plate housed in the casing, wherein the casing has a metal surface, and the metal groove is provided with a first groove, a second groove, a third groove, and a fourth a slot and a fifth slot; the first slot, the second slot, the third slot, the fourth slot, and the fifth slot are sequentially connected, and one end of the first slot is connected to one end of the second slot, and the second slot is The other end is connected to one end of the third slot, the other end of the third slot is connected to one end of the fourth slot, and the other end of the fourth slot is connected to one end of the fifth slot; The third slot is parallel, the second slot is parallel to the fourth slot, the first slot is perpendicular to the second slot; the first slot, the third slot and the fifth slot are located between the second slot and the fourth slot; The three slots are short, the second slot is shorter than the first slot; the second slot is shorter than the fourth slot; the end of the fifth slot away from the third slot is flush with the end of the fourth slot away from the third slot; The middle portions of the opposite two long side walls correspond to a first connection point and a second connection point for electrically connecting to the main board. The communication device of claim 1, wherein the first slot is equal to the third slot; the second slot is shorter than the first slot and the second slot is wider than the first slot; the fourth slot and the third slot The same width; the fifth groove is wider than the second groove. The communication device of claim 1, wherein the first slot has a length of 39 ± 0.05 mm and a width of 1 ± 0.05 mm; and the distance between the first connection point and the second connection point and the second slot Is 19±0.05mm; the length of the second groove is 5±0.05mm, and the width is 3±0.05mm; the length of the third groove is 44±0.05mm, and the width is 1±0.05mm; the length of the fourth groove 14±0.05mm and width 1±0.05mm; the fifth groove has a length of 5±0.05mm and a width of 4± 0.05mm. The communication device of claim 1, wherein the communication device is a mobile phone, a personal digital assistant or a notebook computer.