CN101071898B - Multifrequency antenna assembly - Google Patents

Abstract

The invention discloses a multifrequency antenna module for notebook PC, comprising first antenna for WLAN and second antenna for WWAN, where the two antennas are mutually independent and separately installed inside the notebook computer, and each antenna comprises a radiating unit with high frequency radiating part and low frequency radiating part, and a grounded part to be mounted with the notebook PC, and the main body of the grounded part of the first antenna is approximately aligned with that of the second antenna, and the radiating units are located on the same sides of the main bodies of the grounded parts of the two antennas, and none of the low frequency radiating parts of the two antennas extend along a straight line.

Description

Multi-Band Antenna Assembly

【Technical field】

The invention relates to a multi-frequency antenna assembly, in particular to a separate multi-frequency antenna assembly used in electronic equipment such as notebook computers to meet the application requirements of WLAN and WWAN.

【Background technique】

With the rapid development of mobile communications, people increasingly hope that they can access the Internet anytime and anywhere with a notebook computer or other portable terminals. The wireless access mode based on WLAN (Wireless Local Area Network, wireless local area network) meets this demand of people to a certain extent. However, the transmission distance of WLAN is very small, which limits people's wider wireless transmission. Wireless Wide Area Network (WWAN) is a wireless network with wide area coverage. Its data transmission rate is about 30Kbps-50Kbps, and the transmission distance is increased, which greatly solves the distance requirements for antenna transmission. Therefore, it is people's pursuit goal that a notebook computer or other portable terminals can simultaneously access WWAN and WLAN.

At present, most wireless local area networks are based on Bluetooth (Bluetooth) technical standards or IEEE802.11 series standards. The working frequency band of the antenna in the Bluetooth technology standard falls on 2.4GHz, and the working frequency band of the antenna in the IEEE802.11 series technical standards falls on 2.4GHz and 5GHz respectively. At present, WWAN in the world mainly adopts two major technologies - GSM and CDMA, and the operating frequency bands of these two technical standards fall on 900MHz and 1800MHz.

Currently, many laptops and other portable devices for WWAN and WLAN use planar inverted "F" antennas. The planar inverted "F" antenna (Planar Inyerted-F Antenna, PIFA) is a small antenna commonly used in mobile communication terminals. It is characterized by small size and light weight, which can effectively reduce the occupied space and manufacturing cost, good impedance matching, and easy to realize dual-frequency or multi-frequency. Another very important feature of it is that it has both horizontal polarization and vertical polarization, and is suitable for places with complex electromagnetic environments.

As the size of modern electronic products becomes smaller and smaller, the installation space of built-in antennas in electronic devices such as notebook computers is becoming more and more limited, and modern electronic products need to be equipped with a variety of antennas to adapt to different networks (WLAN and WWAN) for data transmission, so we integrate multiple antennas to reduce its size.

In the prior art, as shown in Figure 1 is a multi-frequency antenna assembly 10, the multi-frequency antenna assembly 10 includes a first antenna 11 applied to a wireless wide area network (WWAN) and a second antenna 12 used for a wireless local area network (WLAN) and the common grounding part 13 thereof. The multi-frequency antenna assembly integrates the WWAN antenna and the WLAN antenna, which effectively saves space. However, in this method, the first antenna and the second antenna 11, 12 are integrally formed, which is not conducive to the disassembly and assembly of different antennas. If one of the antennas has a problem and needs to be replaced, the entire antenna must be replaced, thereby causing inconvenience and waste.

【Content of invention】

The purpose of the present invention is to provide a multi-frequency antenna assembly, which is composed of two multi-frequency antenna assemblies applied to different network domains. The two multi-frequency antenna assemblies are combined at the installation position to save space, and at the same time, Antennas are separated in physical structure, which is convenient for single disassembly and assembly.

In order to achieve the above object, the present invention adopts the following technical solutions: a multi-frequency antenna assembly is used for a notebook computer, which includes a first antenna for a wireless local area network and a second antenna for a wireless wide area network, the first antenna and the second antenna The two antennas are independent of each other and are installed separately inside the notebook computer. Each antenna includes a radiation unit with a high-frequency radiation part and a low-frequency radiation part and a grounding part for assembling with the notebook computer. The main body of the grounding part of the first antenna The part is roughly aligned with the main part of the ground part of the second antenna, the radiation element of each antenna is located on the same side of the aforementioned main part of the ground part of the two antennas, and the low-frequency radiation parts of the first antenna and the second antenna are not along the A straight line extends.

Compared with the prior art, the multi-frequency antenna assembly of the present invention has the following advantages: the multi-frequency antenna assembly disconnects the grounding part of each antenna in the integrated antenna assembly, so that each antenna can be disassembled and assembled separately as required, At the same time, it effectively saves space.

【Description of drawings】

FIG. 1 is a perspective view of a prior art multi-frequency antenna assembly.

Fig. 2 is a perspective view of the first embodiment of the multi-frequency antenna assembly of the present invention.

FIG. 3 is a perspective view of a second embodiment of the multi-frequency antenna assembly of the present invention.

Fig. 4 is a perspective view of a third embodiment of the multi-frequency antenna assembly of the present invention.

【Detailed ways】

FIG. 2 is a perspective view of the antenna assembly provided according to the first embodiment of the present invention. It comprises a first antenna 2 for a wireless local area network and a second antenna 3 for a wireless wide area network.

The first antenna 2 includes a radiating unit 210 , a grounding portion 230 , a connecting portion 220 connecting the radiating unit 210 and the grounding portion 230 , and a bump 240 extending from the junction of the radiating unit 210 and the connecting portion 220 . The connecting portion 220 is in an "L" shape. The radiating unit 210 includes a first radiating part 211 and a second radiating part 212 having a common radiating arm 2101, the first radiating part 211 further includes a first radiating arm 2110, and the second radiating part 212 further includes a second radiating arm 2121 and a L-shaped metal arm 2122. The connecting part 220, the first radiating part 211 and the second radiating arm 2121 are located on the same plane A, and the L-shaped metal arm 2122 extends vertically from the second radiating arm 2121 to form a first side arm 2122a perpendicular to the plane A and a first side arm 2122a parallel to the plane A. Planar second side arm 2122b. The grounding portion 230 includes a main body portion 231, mounting portions 250 disposed at two ends of the main body portion 231, and a free end portion. The free end portion is an “L”-shaped metal sheet 232, which has a side arm perpendicular to the main body portion 231 and extending upward. 2321 and a side arm 2322 extending from the side arm 2321 and parallel to the main body portion 231 . The side arm 2322 has a slightly upturned end 2323 , and the mounting portion 250 is connected to the main body portion 231 of the grounding portion 230 through two electrically connected “L”-shaped metal pieces 251 , 252 . The installation part is provided with an opening for the screw to pass through so that the first antenna 2 is fixed inside the notebook computer or other portable terminals by screws. The protrusion 240 extends from the connection point Q between the radiation unit 210 and the connecting portion 220 for connecting a feeder (not shown).

The second antenna 3 includes a radiation unit 310 , a ground part 330 , a connection part 320 connecting the radiation unit 310 and the ground part 330 , and a bump 340 extending from the connection part 320 . The radiating unit 310 includes a first radiating portion 311 and a second radiating portion 312 having a free end 311'. The second radiating portion 312 is electrically connected to the point P with the first radiating portion 311 . The second radiating part 312 includes an "L"-shaped metal piece 3121, metal pieces 3122, 3123, wherein the metal piece 3121 extends from the end side of the first radiating part 311 and is perpendicular to the first radiating part 311, and the metal piece 3122 extends from the metal piece One side of the end of 3121 extends and is perpendicular to the metal sheet 3121 , and the metal sheet 3123 extends from the metal sheet 3122 and is perpendicular to the metal sheet 3122 and the first radiation portion 311 . The grounding part 330 includes a main body part 331, a mounting part 350 and a free end part 333 respectively arranged at two ends of the main body part 331. Parallel to the side arms 3322 of the main body portion 331 . The side arm 3322 has a slightly upturned end 3323 , and the mounting portion 350 is located on a metal piece 351 extending from the main body portion 331 of the grounding portion 330 . The bump 340 is located at the connection point O between the first radiating part 311 and the connecting part 320 for connecting to a feeder (not shown).

The mounting portion 250 of the first antenna 2 and the mounting portion 350 of the second antenna 3 are respectively located on the outside of the multi-frequency antenna assembly 1 , while the other free end L-shaped metal piece opposite to these mounting portions is located on the inside. The side arm 2322 of " L " shape metal sheet 232 and the side arm 3322 of " L " shape metal sheet 332 are arranged face to face, and wherein side arm 3322 is positioned on side arm 2322 and is parallel to side arm 2322, although side arm 2322,3322 is close to However, they are not connected, so that it is convenient for users to replace any one of the antennas as needed.

The first antenna 2 is used for wireless local area network, and its first radiation part 211 is used for transmitting and receiving the signal of higher frequency (namely 5GHz), and the second radiation part 212 is used for transmitting and receiving the signal of lower frequency (namely 2.4GHz) . The second antenna 3 is used for wireless wide area network, its first radiation part 311 is used for transmitting and receiving the signal of higher frequency (i.e. 1800-1900MHz), and the second radiation part 312 is used for transmitting and receiving the signal of lower frequency (i.e. 900MHz) Signal. Both the second radiating part 212 of the first antenna 2 and the second radiating part 312 of the second antenna 3 are low-frequency radiating parts. Since the low-frequency radiating part is long in length, the antenna adopts a bending design so that the antenna does not affect the Under the condition of the radiation frequency band, the volume of the antenna is effectively saved, and the space is saved.

FIG. 3 is a perspective view of an antenna assembly provided according to a second embodiment of the present invention. It comprises a first antenna 2' and a second antenna 3'. Wherein the first antenna 2' has the same configuration as the first antenna 2 in the first embodiment, and the second antenna 3' has the same configuration as the second antenna 3 in the first embodiment, but the first antenna in this embodiment The "L"-shaped metal sheet 232' of 2' is arranged end-to-end with the "L"-shaped metal sheet 332' of the second antenna 3', and the end 2323' of the first antenna 2' is connected to the end 3323 of the second antenna 3'. ' are aligned and not touching.

FIG. 4 is a perspective view of an antenna assembly provided according to a third embodiment of the present invention. It comprises a first antenna 2" and a second antenna 3". Wherein the configuration of the second antenna 3 "is the same as that of the second antenna 3" in the first embodiment, and the configuration of the first antenna 2 "is substantially the same as that of the first antenna 2 in the first embodiment, but the configuration of the first antenna 2 " There is no "L"-shaped metal sheet 232 of the ground portion 230 of the first antenna 2, and the ground portion 230" of the first antenna includes a main body portion 231" and a metal sheet 232" extending from the main body portion 231". The metal sheet 232" is parallel to the "L"-shaped metal sheet 332" of the grounding part 330" of the second antenna 3" with a certain distance therebetween, and the metal sheet 232" is located below the "L"-shaped metal sheet 332".

The three implementation manners are only three preferred manners of the multi-frequency antenna assembly of the present invention, and the antenna assembly also includes other embodiments. Each antenna in the multi-frequency antenna assembly of the present invention is fixed on a portable device such as a notebook computer through its respective mounting part, and the free end of the grounding part can be held by a plastic part fixed on the notebook computer. Since the volume of portable terminals such as notebook computers is getting smaller and smaller, the shape and installation method of the grounding part of the antenna assembly of the present invention and its installation part can be designed according to the configuration of its internal space, so that the two antennas can effectively realize the following functions: The function of the compound antenna described in the prior art can flexibly change the configuration of the grounding part according to the actual situation so that the antennas can be disassembled and assembled individually. Moreover, the present invention is not limited to the assembly method of two antennas, and is also applicable to multiple antennas, and the configurations of the grounding part and the mounting part of the antenna can be changed according to actual needs.

Claims (9)

1. A multi-frequency antenna assembly is used for a notebook computer, and it includes a first antenna for a wireless local area network and a second antenna for a wireless wide area network, the first antenna and the second antenna are independent of each other, and are separately installed on Inside the notebook computer, each antenna includes a radiation unit having a high-frequency radiation part and a low-frequency radiation part, and a grounding part for assembling with the notebook computer, and is characterized in that: the main part of the grounding part of the first antenna is connected to the grounding part of the second antenna The main parts of the grounding parts are generally aligned, and the radiating elements of each antenna are located on the same side of the aforementioned main parts of the grounding parts of the two antennas. The low-frequency radiation parts of the first antenna and the second antenna do not extend along a straight line, but adopt In the bent design, one end of the main part of the grounding part of the first antenna and the second antenna respectively forms a free end, and the free ends are located inside the aforementioned multi-frequency antenna assembly and are disconnected from each other. 2. The multi-frequency antenna assembly according to claim 1, characterized in that: the other ends of the main parts of the grounding parts of the first antenna and the second antenna each extend to form a mounting part for fixing with a notebook computer, The installation parts of the two antennas are located outside the aforementioned multi-frequency antenna assembly. 3. The multi-frequency antenna assembly as claimed in claim 2, wherein the free ends of the grounding parts of the first antenna and the second antenna are adjacent to but not connected to each other. 4. The multi-frequency antenna assembly as claimed in claim 2, wherein the free ends of the grounding parts of the first antenna and the second antenna are arranged end-to-end. 5. The multi-frequency antenna assembly as claimed in claim 2, wherein the free ends of the grounding parts of the first antenna and the second antenna are arranged in parallel and separated by a certain distance. 6 . The multi-frequency antenna assembly as claimed in claim 1 , wherein the first antenna comprises a first radiating portion with a working frequency band of 5 GHz and a second radiating portion with a working frequency band of 2.4 GHz. 7 . 7 . The multi-frequency antenna assembly according to claim 1 , wherein the second antenna comprises a first radiating portion whose operating frequency band falls within 1800-1900 MHz and a second radiating portion whose operating frequency band falls within 900 MHz. 8. The multi-frequency antenna assembly according to claim 1, wherein the first antenna further comprises a first radiating part, a second radiating part and a connecting part sharing the same radiating arm, and the first radiating part has The first radiating arm, wherein the connecting portion, the first radiating portion and the first radiating arm are located on the same plane, and the second radiating arm extends vertically from the first radiating arm to form a first side arm perpendicular to the plane and a first side arm parallel to the the second side arm of the above plane. 9. The multi-frequency antenna assembly according to claim 1, wherein the second antenna includes a first radiating portion having a free end parallel to the main body of the grounding portion and vertically upward from the free end of the first radiating portion The extended second radiating part, wherein the second radiating part includes several metal sheets connected by bending.

Images