CN102420350B

CN102420350B - Long Term Evolution Antenna

Info

Publication number: CN102420350B
Application number: CN2010102979418A
Authority: CN
Inventors: 王盈智; 郑濬腾
Original assignee: Quanta Computer Inc
Current assignee: Quanta Computer Inc
Priority date: 2010-09-27
Filing date: 2010-09-27
Publication date: 2013-12-04
Anticipated expiration: 2030-09-27
Also published as: CN102420350A

Abstract

The invention discloses a long-term evolution antenna, which comprises an insulating substrate, a main antenna arranged on one surface of the insulating substrate and a metal sheet fixed on the insulating substrate and connected with the main antenna. The main antenna includes a common section, and a first conductive arm, a second conductive arm and a loop conductor extending from the common section. The metal sheet is connected with the free ends of the first conductor arm and the second conductor arm, and forms a first radiation section which resonates in a first frequency band together with the first conductor arm, and forms a second radiation section which resonates in a second frequency band together with the second conductor arm. And the loop conductor extends outwards from the common section to form a loop and resonates at a third frequency band. And the three frequency bands can cover working frequency bands and GPS frequency bands required by the application of Long Term Evolution (LTE) technology in various countries to achieve the aim of the invention.

Description

Long-term evolution antenna

Technical field

The present invention relates to a kind of dual-band antenna, particularly relate to the built-in double frequency antenna of a kind of WLAN of being applied to.

Background technology

Long Term Evolution (Long Term Evolution is called for short LTE) technology is the mobile wireless wide frequency technology of new generation got most of the attention in current field of wireless communication.So-called LTE refers to can be under the 20MHz frequency range, reach downlink transfer speed 100Mbit/s, uplink transmission rate 50Mbit/s, and compatible downwards, support existing 3G system, it can allow the service supplier provide the radio wideband service by comparatively economic mode, and surmounts the usefulness of 3G wireless network now, brings more excellent performance.Because at present various countries for the working frequency range that LTE defined out as shown in table 1 below (, need include 698-960MHz, 1710-2170MHz and 2500-2700MHz, and most notebook computers have the GPS function now, therefore, how to conceive a kind of antenna that can contain above-mentioned LTE frequency range and GPS frequency range and there is enough operation frequency ranges, be emphasis of the present invention.

In table 1: working frequency range (Operating band), UL frequency (UL Frequencies), DL frequency (DL Frequencies), zone (region).

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Table 1

Working frequency range	The UL frequency	The DL frequency	Zone
				Frequency range I	1920-1980MHz	2110-2170MHz	Europe, Asia, Oceania
Frequency range II	1850-1910MHz	1930-1990MHz	America
				Frequency range III	1710-1785MHz	1805-1880MHz	Europe
Frequency range IV	1710-1755MHz	2110-2155MHz	America
				Frequency range V	824-849MHz	869-894MHz	The U.S., Australia
Frequency range VI	830-840MHz	875-885MHz	Japan
				Frequency range VII	2500-2570MHz	2620-2690MHz	Europe
Frequency range VIII	880-915MHz	925-960MHz	Europe
				Frequency range IX	1749.9-1784.9MHz	1844.9-1879.9MHz	Japan
Frequency range X	1710-1770MHz	2110-2170MHz	Europe
				Frequency range XI	1427.9-1425.9MHz	1475.9-1500.9MHz	Japan
Frequency range XII	698-716MHz	728-746MHz	The U.S., Canada
				Frequency range XIII	777-787MHz	746-756MHz	The U.S., Canada
Frequency range XIV	788-798MHz	758-768MHz	The U.S., Canada
				Frequency range XVII	704-716MHz	734-746MHz	The U.S., Canada

Summary of the invention

Therefore, the object of the present invention is to provide a kind of long-term evolution antenna that can contain a plurality of operation frequency ranges.

For achieving the above object, long-term evolution antenna of the present invention, comprise that an insulated substrate, is located at the main antenna and on a surface of this insulated substrate and is fixed on insulated substrate and the sheet metal be connected with main antenna.

One first conductor arm, one second conductor arm and a return conductors that this main antenna comprises a common sections and extended by this common sections.This common sections is for feed-in one radiofrequency signal and have a contrary first end and one second end; This first conductor arm is stretched out by the first end of this common sections, and has the 3rd end that is positioned at one first side of this insulated substrate; This second conductor arm towards extending away from this first conductor arm direction, and has the 4th end that is positioned at the first side of this insulated substrate by the first end of this common sections; This return conductors has the 6th end of a five terminal be connected with the second end of this common sections and contiguous this five terminal, and is extended out to the 6th end and formed a loop by this five terminal.

This sheet metal and this insulated substrate probably are one first side of vertically being located at this insulated substrate, and are connected with the 3rd end and the 4th end, with this first conductor arm, jointly to form one first radiant section, and jointly form one second radiant section with this second conductor arm.

Preferably, this the first conductor arm length is greater than this second conductor arm length, and this first radiant section can resonate in one first frequency range, this second radiant section can resonate in second frequency range higher than this first frequency range, and this return conductors can resonate in the 3rd frequency range higher than this second frequency range.

Preferably, this main antenna more comprises an earthing conductor, it is located at second side contrary with this first side of this insulated substrate, and with the six end connecting of this return conductors, and this long-term evolution antenna more comprises a coaxial cable, the holding wire of this coaxial cable is connected with this common sections, and the earth connection of this coaxial cable is connected with this earthing conductor.

Preferably, this main antenna more comprises an extension conductor, and itself and this second conductor arm generally is an end that vertically is connected to this sheet metal separately and with this sheet metal, and jointly forms this second radiant section with this second conductor arm and this sheet metal.

Preferably, this main antenna more comprises a copper-foil conducting electricity be connected with this earthing conductor.

Effect of the present invention is to utilize sheet metal to strengthen the frequency range of the first radiant section, and make the second radiant section be operable in second frequency range higher than this first frequency range of LTE, and utilize return conductors to adjust the high frequency coupling, make return conductors can operate in the 3rd frequency range higher than the second frequency range of LTE, and reach effect and the purpose that contains various countries LTE working frequency range and GPS frequency range.

The accompanying drawing explanation

Fig. 1 is the constructing stereo schematic diagram of a preferred embodiment of long-term evolution antenna of the present invention;

Fig. 2 is the constructing stereo schematic diagram at another visual angle of the present embodiment long-term evolution antenna;

Fig. 3 is the dimensional drawing of the present embodiment long-term evolution antenna;

Fig. 4 is that the present embodiment long-term evolution antenna is arranged on the position view on notebook computer;

Fig. 5 is voltage standing wave ratio (VSWR) measured result of the present embodiment long-term evolution antenna; And

Fig. 6 to Figure 12 is the radiation pattern figure of the present embodiment long-term evolution antenna under the different operating frequency.

The main element symbol description

100 Long Term Evolutions (LTE) antenna

1 insulated substrate 2 main antennas

3 metallic plate 4 coaxial cables

5 notebook computers

10 surface 11 first sides

12 opposite side 13 second sides

21 common sections 22 first conductor arms

23 second conductor arm 24 return conductors

25 first radiant section 26 second radiant sections

27 extend conductor 28 earthing conductors

29 copper-foil conducting electricity 41 holding wires

42 earth connection 51 lids

110 ends

211 first end 212 second ends

221 the 3rd end 231 the 4th ends

241 five terminal 242 the 6th ends

Embodiment

About aforementioned and other technology contents, characteristics and effect of the present invention, in the detailed description in following cooperation with reference to a preferred embodiment of accompanying drawing, can clearly present.

Consulting shown in Fig. 1 and Fig. 2, is a preferred embodiment of Long Term Evolution of the present invention (calling LTE in the following text) antenna, and the present embodiment LTE antenna 100 comprises an insulated substrate 1, a main antenna 2 and a sheet metal (ironware) 3.

Main antenna 2 is located at a surface 10 of insulated substrate 1, and comprises a common sections 21, one first conductor arm 22, one second conductor arm 23 and a return conductors 24.

Common sections 21 is general rectangular plate bodys, and it is for feed-in one radiofrequency signal and have a contrary first end 211 and one second end 212.

The first conductor arm 22 is stretched out by the first end 211 of common sections 21, and has the 3rd end 221 that is positioned at one first side 11 of insulated substrate 1.In the present embodiment, the first side 11 of the first conductor arm 22 contiguous insulated substrates 1 also extends to the opposite side 12 adjacent with the first side 11 of insulated substrate 1 abreast with the first side 11 along the first side 11, then extends to the first side 11 and form the 3rd end 221 in its end towards the first side 11 bendings.

The second conductor arm 23 towards extending away from the first conductor arm direction, and has the 4th end 231 that is positioned at the first side 11 of insulated substrate 1 by the first end 211 of common sections 21.In the present embodiment, the second conductor arm 23 by first end 211, stretched out and a bit of distance of the first side 11 of parallel insulation substrate 1 after, then extend to the first side 11 and form the 4th end 231 in its end towards the first side 11 bendings.

Return conductors 24 has the 6th end 242 of a five terminal 241 be connected with the second end 212 of common sections 21 and a contiguous five terminal 241, and is extended to the 6th end 242 and formed a loop by five terminal 241 outwards.

Sheet metal 3 is to be a strip in the present embodiment, itself and insulated substrate 1 generally are the first side 11 of vertically being located at insulated substrate 1, and be connected with the 3rd end 221 of the first conductor arm 22 and the 4th end 231 of the second conductor arm 23, and jointly form one first radiant sections 25 with the first conductor arm 22, and jointly form one second radiant sections 26 with the second conductor arm 23.In addition, for the length of adjusting the second radiant section 26 makes to be adapted to operate in specific frequency range, the main antenna 2 of the present embodiment more comprises an extension conductor 27, itself and the second conductor arm 23 are separately, and an end extends to the first side 11 of insulated substrate 1, generally be with sheet metal 11 end 110 that vertically is connected to sheet metal 11, and jointly form the second radiant sections 26 with the second conductor arm 23 and sheet metal 11.

In the present embodiment, the total length of the first radiant section 25 is greater than the second radiant section 26, and the total length of first radiant section 25 of the present embodiment design, can make the first radiant section 25 resonate in the first frequency range 698-960MHz, and the design of the total length of the second radiant section 26 can make the second radiant section 26 resonate in second a frequency range 1710-2170MHz higher than the first frequency range, and the design of the total length of return conductors 24, can make return conductors 24 resonate in the 3rd a frequency range 2500-2700MHz higher than the second frequency range.The overall dimensions of the present embodiment LTE antenna 100 is 82x14x3mm ³, the detailed dimensions of main antenna 2 and sheet metal 3 is shown in Figure 3.

In addition, as shown in Figures 1 and 2, the main antenna 2 of the present embodiment more comprises an earthing conductor 28, and it is located at second side 13 contrary with the first side 11 of insulated substrate 1, and is connected with the 6th end 242 of return conductors 24.And common sections 21 is to supply the holding wire 41 of a coaxial cable 4 to be electrically connected to the feed-in radiofrequency signal, and the earth connection 42 of coaxial cable 4 is connected with earthing conductor 28.

Moreover, in order to increase the contact area of antenna, the present embodiment can connect in addition a copper-foil conducting electricity 29 on earthing conductor 28 again.

As shown in Figure 4, the LTE antenna 100 of the present embodiment is arranged on the lid 51 of a notebook computer 5 usually, is positioned at the side of display top.

As shown in Figure 5, it is voltage standing wave ratio (VSWR) measured result of the LTE antenna 100 of the present embodiment, can see LTE antenna 100 in Fig. 4 except the frequency range that is operable in the LTE uses such as 698-960MHz, 2170-2700MHz and 2500-2700MHz, also comprise GPS frequency range 1575.42MHz, can meet the GPS functional requirement of notebook computer now.And the VSWR of above-mentioned operation frequency range 698-960MHz, 1575MHz, 2170-2700MHz and 2500-2700MHz meets the demand of industry for antenna radiation efficiency all below 4.

Seeing table 2 and table 3, is total radiant power (Total Radiated Power be called for short Tot.Rad.Pwr.) and the radiation efficiency percentage (Efficiency%) of LTE antenna 100 under each frequency of operation of the present embodiment.

Table 2 table 3

Referring to Fig. 6 to Figure 12, be the radiation pattern figure of LTE antenna 100 under the different operating frequency of the present embodiment, from each figure, shown, the radiation pattern of LTE antenna 100 has good omni-directional.

In sum, the LTE antenna 100 of the present embodiment utilizes sheet metal 3 can strengthen the frequency range of the first radiant section 25, and make the second radiant section 26 can operate in the 1710-2170MHz frequency range of GPS frequency range (1575.42MHz) and LTE simultaneously, and utilize return conductors 24 to adjust the high frequency coupling, make return conductors 24 can operate in the 2500-2700MHz high-frequency band of LTE, and reach effect and the purpose that contains various countries LTE working frequency range and GPS frequency range.

Above-described is only preferred embodiment of the present invention, when not limiting scope of the invention process with this, the simple equivalence of generally doing according to the claims in the present invention and invention description content changes and modifies, and all still remains within the scope of the patent.

Claims

1. a long-term evolution antenna comprises:

Insulated substrate;

Main antenna, be located at a surface of this insulated substrate, and this main antenna comprises:

Common sections, supply feed-in one radiofrequency signal and have a contrary first end and one second end;

The first conductor arm, stretched out by the first end of this common sections, and have the 3rd end that is positioned at one first side of this insulated substrate;

The second conductor arm, towards extending away from this first conductor arm direction, and have the 4th end that is positioned at the first side of this insulated substrate by the first end of this common sections;

Return conductors, have the 6th end of a five terminal be connected with the second end of this common sections and contiguous this five terminal, and extended out to the 6th end and formed a loop by this five terminal; And

Sheet metal, generally be with this insulated substrate one first side of vertically being located at this insulated substrate, and be connected with the 3rd end and the 4th end, with this first conductor arm, jointly to form one first radiant section, and jointly forms one second radiant section with this second conductor arm;

Wherein this main antenna also comprises an extension conductor, and itself and this second conductor arm generally is an end that vertically is connected to this sheet metal separately and with this sheet metal, and jointly forms this second radiant section with this second conductor arm and this sheet metal.

2. according to long-term evolution antenna claimed in claim 1, wherein this first conductor arm length is greater than this second conductor arm length, and this first radiant section can resonate in one first frequency range, this second radiant section can resonate in second frequency range higher than this first frequency range, and this return conductors can resonate in the 3rd frequency range higher than this second frequency range.

3. according to long-term evolution antenna claimed in claim 2, wherein this main antenna also comprises an earthing conductor, it is located at second side contrary with this first side of this insulated substrate, and with the six end connecting of this return conductors, and this long-term evolution antenna also comprises a coaxial cable, the holding wire of this coaxial cable is connected with this common sections, and the earth connection of this coaxial cable is connected with this earthing conductor.

4. according to long-term evolution antenna claimed in claim 3, wherein this main antenna also comprises a copper-foil conducting electricity be connected with this earthing conductor.

5. according to long-term evolution antenna claimed in claim 2, wherein this first frequency range comprises the 698-960MHz scope, this second frequency range comprises 1575MHz and 2170-2700MHz scope, and the 3rd frequency range comprises the 2500-2700MHz scope.