CN103515702A - Terminal antenna - Google Patents
Terminal antenna Download PDFInfo
- Publication number
- CN103515702A CN103515702A CN201210215464.5A CN201210215464A CN103515702A CN 103515702 A CN103515702 A CN 103515702A CN 201210215464 A CN201210215464 A CN 201210215464A CN 103515702 A CN103515702 A CN 103515702A
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- CN
- China
- Prior art keywords
- main radiator
- terminal antenna
- floor
- limit
- extended line
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q13/00—Waveguide horns or mouths; Slot antennas; Leaky-waveguide antennas; Equivalent structures causing radiation along the transmission path of a guided wave
- H01Q13/10—Resonant slot antennas
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
- H01Q5/30—Arrangements for providing operation on different wavebands
- H01Q5/378—Combination of fed elements with parasitic elements
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
- H01Q9/04—Resonant antennas
- H01Q9/30—Resonant antennas with feed to end of elongated active element, e.g. unipole
- H01Q9/40—Element having extended radiating surface
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- Support Of Aerials (AREA)
- Waveguide Aerials (AREA)
Abstract
The invention provides a terminal antenna. The terminal antenna is characterized in that the terminal antenna comprises a floor and a main radiator which are located in a same plane; the floor possesses an open-type gap; the main radiator is located in the gap; the main radiator and the open-type gap are mutually connected through a feeding point which is extended from the main radiator; the floor also possesses a ground extension cord; the ground extension cord is extended from the open-type gap of the floor, is located in the open-type gap, surrounds an outer side of the main radiator and maintains preset distances with the open-type gap and the outer side of the main radiator; the ground extension cord is not intersected with the feeding point; the ground extension cord is used to be coupled with the main radiator so as to generate a low frequency portion of the terminal antenna.
Description
Technical field
The present invention relates to radio-frequency technique, relate in particular to a kind of terminal antenna.
Background technology
Microstrip antenna have size little, be easy to processing, be easy to the advantages such as active device is integrated, deficiency the most obvious of microstrip antenna is narrow-band characteristic.It is narrower that narrow-band characteristic refers to the working frequency range bandwidth of microstrip antenna.Along with microstrip antenna is widely used in terminal equipment, this narrow-band characteristic of microstrip antenna also highlights day by day for the impact of terminal equipment communication performance.Monopole flat plane antenna has been subject to paying close attention to widely because it has omnidirectional radiation characteristic and is easier to obtain super bandwidth performance.Utilize the number of antennas of monopole flat plane antenna in can minimizing system, simplified structure, reduces volume weight, reduces costs etc.
But traditional monopole flat plane antenna, when realizing high and low frequency double resonance, need to increase match circuit.And match circuit is a kind of integrated form element composition, be subject to the restriction of the narrow-band characteristic of element itself, even if can produce low frequency, also still there is the difficult tune of low frequency and the not high problem of low frequency efficiency, and increase match circuit and need to take up room, make structure complicated, introduce circuit loss, therefore increasing match circuit is not the best practice that promotes antenna efficiency.
Summary of the invention
The invention provides that a kind of small size printed antenna low frequency is difficult to be adjusted and the terminal antenna of the problem such as low frequency efficiency is not high for effectively solving, this scheme just can realize the covering of LTE full range without match circuit, and has good low frequency characteristic.
The invention provides a kind of terminal antenna, comprising: be positioned at same plane Nei floor and main radiator;
Described floor has a gap opened, and described main radiator is positioned at described breach, connected with each other by the distributing point extending out from described main radiator between described main radiator and described gap opened;
Described floor also has ground extended line, described ground extended line extends out and is positioned at described gap opened from the gap opened on described floor, Wai Tiao limit around described main radiator arranges, and keeps predeterminable range with the Wai Tiao limit of described gap opened and described main radiator; Described ground extended line and described distributing point are non-intersect, and described ground extended line is for being coupled with described main radiator, to produce the low frequency part of terminal antenna.
Technique effect of the present invention is: main radiator is arranged in the gap opened on floor with ground extended line, ground extended line is around main radiator, main radiator, coupling between two between extended line and this three of floor breach, produce the low frequency part of antenna, and, existence due to ground extended line, being equivalent to has increased a distributed capacitor for terminal antenna, also be just similar to and increased a distributed match circuit for terminal antenna, its low frequency characteristic is better, therefore efficiently solves the difficult tune of printed antenna low frequency and the not high problem of low frequency efficiency.This scheme just can realize Long Term Evolution (Long Term Evolution without match circuit, referred to as: LTE) full range covers, and there is good low frequency characteristic, and, in conplane floor and main radiator, be plane printed structure, effectively saved the cost of terminal antenna.
Accompanying drawing explanation
The structural representation of the terminal antenna that Fig. 1 provides for the embodiment of the present invention one;
The result schematic diagram of Fig. 2 for the terminal antenna shown in Fig. 1 is carried out to emulation;
Fig. 3 is the efficiency situation of antenna when the terminal antenna shown in Fig. 1 is carried out to actual measurement;
Fig. 4 is the syndeton schematic diagram of terminal antenna and USB head;
Fig. 5 is the enlarged drawing at gap opened 11 places in Fig. 1;
The structural representation of the terminal antenna of three kinds of forms that Fig. 6 to Fig. 8 provides for the embodiment of the present invention two;
The structural representation of the terminal antenna that Fig. 9 provides for the embodiment of the present invention three;
Figure 10 is the simulation result of terminal antenna shown in Fig. 9;
The structural representation of the terminal antenna of two kinds of forms that Figure 11 to Figure 12 provides for the embodiment of the present invention three;
The structural representation of the terminal antenna that Figure 13 provides for the embodiment of the present invention four;
Figure 14 is the simulation result of terminal antenna shown in Figure 13.
Embodiment
The structural representation of the terminal antenna that Fig. 1 provides for the embodiment of the present invention one, as shown in Figure 1, this terminal antenna comprises: be positioned at same plane Nei floor 1 and main radiator 2.This floor 1 has an exploitation formula breach 11, and main radiator 2 is positioned at this open breach 11, is that the distributing point 21 by extending out from main radiator 2 is connected with each other between main radiator 2 and this gap opened 11.Floor 1 also has ground extended line 12, the metal wire that the gap opened 11 on this extended line 12Shi Cong floor, ground 1 extends out, and within being positioned at gap opened 11, round the Wai Tiao limit setting of main radiator 2.All keep default distance with the Wai Tiao limit of gap opened 11 and main radiator 2, ground extended line 12 is non-intersect with distributing point 21.The Main Function of this ground extended line 12 is and main radiator 2 couplings, to produce the low frequency part of terminal antenna.
Here it should be noted that, these gap opened 11 Shi Youyige open ends and N bar limit form, N is more than or equal to 3 positive integer, article one, limit to the N bar limit is connected successively, main radiator 2 can be the polygon corresponding with the shape of gap opened 11, can be also other shapes not corresponding with the shape of gap opened 11.It should be noted that, the concrete shape of gap opened 11 and main radiator 2 can be because of concrete Antenna Design different and different, in Fig. 1, be to take gap opened 11 and main radiator 2 to be the explanation that rectangle carries out as example, but not in order to limit the present invention for the restriction of the shape of gap opened 11 and main radiator 2.
The main radiator 2 that the embodiment of the present invention provides is a block of metal paster structure, mainly for generation of the HFS of terminal antenna.Floor 1 has gap opened 11 and ground extended line 12, the low frequency part that produces antenna by ground extended line 12 and main radiator 2 couplings, wherein it should be noted that, the length of ground extended line 12 can affect the low frequency of antenna, the length that is generally ground extended line 12 is longer, and low frequency frequency is lower.
The result schematic diagram of Fig. 2 for the terminal antenna shown in Fig. 1 is carried out to emulation, Fig. 3 is the efficiency situation of antenna when the terminal antenna shown in Fig. 1 is carried out to actual measurement.What wherein the terminal in actual measurement adopted is direct insertion wireless data card, and the USB head of wireless data card is directly welded on floor 1, as shown in Figure 4.Known in conjunction with Fig. 2～Fig. 4, the terminal antenna that the embodiment of the present invention provides can comprise the whole frequency range of LTE, and for the efficiency of antenna, low frequency is more than 40%, and high frequency, more than 50%, meets the design requirement of whole frequency range.
Still take the terminal antenna shown in Fig. 1 as example, Fig. 5 is the enlarged drawing at gap opened 11 places in Fig. 1, and when N=3, the gap opened 11You Santiao limit shown in Fig. 5 (11A, 11B and 11C) and Yi Ge open end 11D form.Wherein San Tiao limit respectively is article one limit 11A, second limit 11B He Santiao limit 11C.
As shown in Figure 5, article one limit 11A that ground extended line 12 can Shi Cong floor 1 extends out, and the San Tiao limit 11C on distributing point 21Yu floor 1 is connected.The position that extends out, extended line 12Cong floor 1, ground is called primary importance in the present embodiment, and this primary importance is preferably closed on open end 11D, and preferred, primary importance is positioned at the least significant end that article one limit 11A closes on open end 11D.
The structural representation of the terminal antenna of three kinds of forms that the embodiment of the present invention two provides as shown in Figure 6 to 8, the bearing of trend of ground extended line can be extending along article one limit 11A as shown in Figure 6, and development length is variable, and the present embodiment does not limit.
In a kind of situation, can also be on Fig. 6 basis further extending from article one limit 11A to second limit 11B as shown in Figure 7, variable along the development length of second limit 11B, the present embodiment does not limit.
In another situation, can also be on Fig. 6, Fig. 7 or Fig. 8 basis part that further omission article one Bian11AXiang open end 11D as shown in Figure 8 extends, this part ground extended line can be influential to the high frequency performance of antenna, and this part ground extended line is longer, and the high frequency bandwidth of antenna is narrower.If so omit this extended line partially, can promote the high frequency bandwidth of antenna.
If when the requirement of the high-frequency band of this terminal antenna is lower, can reduce high frequency by the form of at least one open groove 22 is set in main radiator 2.The structural representation of the terminal antenna that the embodiment of the present invention three as shown in Figure 9 provides, Figure 10 is the simulation result of terminal antenna shown in Fig. 9.The Main Function of groove 22 is to extend the current path in main radiator 2, and therefore, groove 22 edge can be various shape, the structural representation of the terminal antenna of two kinds of forms that the embodiment of the present invention three as shown in Figure 11 to Figure 12 provides.By comparison diagram 2 and Figure 10, can know, set up after the open groove 22 away from distributing point 21 in main radiator 2, the high-frequency band of antenna is expanded to low frequency direction, the high band part variation of high frequency.At this moment, can be by promoting the performance of HFS near feed part (distributing point 21 position) fluting.The structural representation of the terminal antenna that the embodiment of the present invention four as shown in figure 13 provides, and the simulation result of terminal antenna shown in the Figure 13 shown in Figure 14.Contrasting the simulation result shown in Figure 10 and Figure 14 can know, the HFS of this antenna is improved.
The terminal antenna that the embodiment of the present invention provides, by main radiator being arranged in the gap opened on floor, and set up and be centered around main radiator ground extended line around, make main radiator, coupling between two between ground extended line and this three of floor breach, produce the low frequency part of antenna, and, existence due to ground extended line, being equivalent to has increased a distributed capacitor for terminal antenna, also be just similar to and increased a distributed match circuit for terminal antenna, its low frequency characteristic is better, therefore efficiently solve the difficult tune of small size printed antenna low frequency and the not high problem of low frequency efficiency, this scheme just can realize LTE full range without match circuit and cover, and there is good low frequency characteristic.And, in conplane floor and main radiator, be plane printed structure, effectively saved the cost of terminal antenna.
Finally it should be noted that: each embodiment, only in order to technical scheme of the present invention to be described, is not intended to limit above; Although the present invention is had been described in detail with reference to aforementioned each embodiment, those of ordinary skill in the art is to be understood that: its technical scheme that still can record aforementioned each embodiment is modified, or some or all of technical characterictic is wherein equal to replacement; And these modifications or replacement do not make the essence of appropriate technical solution depart from the scope of various embodiments of the present invention technical scheme.
Claims (7)
1. a terminal antenna, is characterized in that, comprising: be positioned at same plane Nei floor and main radiator;
Described floor has a gap opened, and described main radiator is positioned at described breach, connected with each other by the distributing point extending out from described main radiator between described main radiator and described gap opened;
Described floor also has ground extended line, described ground extended line extends out and is positioned at described gap opened from the gap opened on described floor, Wai Tiao limit around described main radiator arranges, and keeps predeterminable range with the Wai Tiao limit of described gap opened and described main radiator; Described ground extended line and described distributing point are non-intersect, and described ground extended line is for being coupled with described main radiator, to produce the low frequency part of terminal antenna.
2. terminal antenna according to claim 1, is characterized in that, described gap opened You Yige open end and N bar limit form, and N bar limit, article one limit to the is connected successively, and N is more than or equal to 3 positive integer.
3. terminal antenna according to claim 2, is characterized in that, described ground extended line extends out from article one limit on described floor;
Described distributing point is connected with the N bar limit on described floor.
4. terminal antenna according to claim 3, is characterized in that, described ground extended line extends out from the primary importance on article one limit on described floor, and described primary importance is closed on described open end.
5. terminal antenna according to claim 4, is characterized in that, described primary importance is positioned at the end on described article one limit.
6. according to the terminal antenna described in any one in claim 1 to 5, it is characterized in that, in described main radiator, be also provided with at least one open groove.
7. terminal antenna according to claim 6, is characterized in that, the one or more positions that are positioned at away from described distributing point in described at least one open groove.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210215464.5A CN103515702B (en) | 2012-06-27 | 2012-06-27 | Terminal antenna |
| PCT/CN2013/078198 WO2014000667A1 (en) | 2012-06-27 | 2013-06-27 | Terminal antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210215464.5A CN103515702B (en) | 2012-06-27 | 2012-06-27 | Terminal antenna |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103515702A true CN103515702A (en) | 2014-01-15 |
| CN103515702B CN103515702B (en) | 2016-08-17 |
Family
ID=49782261
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210215464.5A Active CN103515702B (en) | 2012-06-27 | 2012-06-27 | Terminal antenna |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN103515702B (en) |
| WO (1) | WO2014000667A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5824563B1 (en) * | 2014-09-22 | 2015-11-25 | 学校法人智香寺学園 | Small slot antenna |
| TWI597894B (en) * | 2016-02-05 | 2017-09-01 | 和碩聯合科技股份有限公司 | Antenna module |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6259407B1 (en) * | 1999-02-19 | 2001-07-10 | Allen Tran | Uniplanar dual strip antenna |
| US20080106478A1 (en) * | 2006-11-06 | 2008-05-08 | Hill Robert J | Broadband antenna with coupled feed for handheld electronic devices |
| CN101953022A (en) * | 2006-11-16 | 2011-01-19 | 盖尔创尼克斯公司 | Compact antenna |
| CN101986461A (en) * | 2010-01-05 | 2011-03-16 | 连展科技电子（昆山）有限公司 | Integrated multi-frequency antenna |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI258246B (en) * | 2002-03-14 | 2006-07-11 | Sony Ericsson Mobile Comm Ab | Flat built-in radio antenna |
| CN1536709A (en) * | 2003-04-09 | 2004-10-13 | 正文科技股份有限公司 | Dual-frequency inverted-F antenna |
| CN102055065A (en) * | 2009-11-11 | 2011-05-11 | 宏碁股份有限公司 | Mobile communication device and antenna thereof |
-
2012
- 2012-06-27 CN CN201210215464.5A patent/CN103515702B/en active Active
-
2013
- 2013-06-27 WO PCT/CN2013/078198 patent/WO2014000667A1/en active Application Filing
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6259407B1 (en) * | 1999-02-19 | 2001-07-10 | Allen Tran | Uniplanar dual strip antenna |
| US20080106478A1 (en) * | 2006-11-06 | 2008-05-08 | Hill Robert J | Broadband antenna with coupled feed for handheld electronic devices |
| CN101953022A (en) * | 2006-11-16 | 2011-01-19 | 盖尔创尼克斯公司 | Compact antenna |
| CN101986461A (en) * | 2010-01-05 | 2011-03-16 | 连展科技电子（昆山）有限公司 | Integrated multi-frequency antenna |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103515702B (en) | 2016-08-17 |
| WO2014000667A1 (en) | 2014-01-03 |
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| Date | Code | Title | Description |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
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| TR01 | Transfer of patent right |
Effective date of registration: 20171030 Address after: Metro Songshan Lake high tech Industrial Development Zone, Guangdong Province, Dongguan City Road 523808 No. 2 South Factory (1) project B2 -5 production workshop Patentee after: HUAWEI terminal (Dongguan) Co., Ltd. Address before: 518129 Longgang District, Guangdong, Bantian HUAWEI base B District, building 2, building No. Patentee before: Huawei Device Co., Ltd. |
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| TR01 | Transfer of patent right | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 523808 Southern Factory Building (Phase I) Project B2 Production Plant-5, New Town Avenue, Songshan Lake High-tech Industrial Development Zone, Dongguan City, Guangdong Province Patentee after: Huawei Device Co., Ltd. Address before: 523808 Southern Factory Building (Phase I) Project B2 Production Plant-5, New Town Avenue, Songshan Lake High-tech Industrial Development Zone, Dongguan City, Guangdong Province Patentee before: HUAWEI terminal (Dongguan) Co., Ltd. |
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| CP01 | Change in the name or title of a patent holder |