CN102110870A - Planar internal antenna - Google Patents
Planar internal antenna Download PDFInfo
- Publication number
- CN102110870A CN102110870A CN2009102009368A CN200910200936A CN102110870A CN 102110870 A CN102110870 A CN 102110870A CN 2009102009368 A CN2009102009368 A CN 2009102009368A CN 200910200936 A CN200910200936 A CN 200910200936A CN 102110870 A CN102110870 A CN 102110870A
- Authority
- CN
- China
- Prior art keywords
- arm
- branch
- short circuit
- frequency
- high frequency
- 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.)
- Pending
Links
Images
Landscapes
- Waveguide Aerials (AREA)
Abstract
The invention relates to a planar internal antenna comprising a main body, a high-frequency resonate arm, a parasitic branch and a short-circuit branch, wherein the high-frequency resonate arm comprises a first resonate arm and a second resonate arm, and a feeding point is arranged in the center of the high-frequency resonate arm; an earthing point is arranged on the main body in a position corresponding to the feeding point; the high-frequency resonate arm is connected with the main body through the short-circuit branch; the left end of the first resonate arm and the right end of the parasitic branch are parallel with each other and positioned in the same lengthways space interval; and a gap is formed between the parasitic branch and the main body. Compared with the prior art, the antenna has small occupied area and is easy to install.
Description
Technical field
The present invention relates to a kind of antenna, especially relate to a kind of plane built-in aerial.
Background technology
Wi-Fi (Wireless Fidelity), adopting wireless fidelity technology is the same with Bluetooth technology, belongs to the short distance wireless technical that uses in office and family.Its present spendable standard has two, is respectively IEEE802.11a (5.8GHz) and IEEE802.11b (2.4GHz).
WIFI antenna majority is on the market relying on PCB or other metallic objects at present.In fixing, also need to reserve syndeton, good to guarantee ground connection.
Have now and can support simultaneously that the antenna ratio of IEEE802.11a (5.8GHz) and IEEE802.11b (2.4GHz) is less.Usually all belong to three dimensional design, need a certain size three dimensions, and depend on metallic object ().
Along with popularizing of portable equipments such as notebook computer, the application of WIFI further expands.More and more need the Antenna Design that works independently, and be easy to fixing and install.
Summary of the invention
Purpose of the present invention is exactly to provide a kind of little, easy-to-install plane built-in aerial that takes up room for the defective that overcomes above-mentioned prior art existence.
Purpose of the present invention can be achieved through the following technical solutions:
A kind of plane built-in aerial, this antenna comprises that main ground, harmonic high frequency are raised one's arm, parasitic branch, short circuit branch, it is characterized in that, described harmonic high frequency is raised one's arm and is comprised first resonance arm, second resonance arm, the described harmonic high frequency center of raising one's arm is provided with distributing point, mainly the correspondence position with this distributing point is provided with earth point, described harmonic high frequency raise one's arm by short circuit branch be connected mainly, the left end of described first resonance arm is parallel with the right-hand member of parasitic branch and be in same vertical interval, is provided with the slit between described parasitic branch and the main ground.
Described short circuit branch is with parallel mainly, and forms the slit.
Described first resonance arm is connected with the second resonance arm short circuit.
Be provided with the slit between described short circuit branch and the main ground.
Compared with prior art, the present invention has the following advantages:
Based on the design background research and development of WIFI, also may be used on other frequency application simultaneously; Manufacture method is various, and PCB, five metals sheet, flexible PCB, MID etc. all can realize; This (not relying on other environmental factor resonance) design that works independently takes up room little, is easy to install, can be with the outward appearance figuration assembling of equipment.
Description of drawings
Fig. 1 is a structural representation of the present invention;
Fig. 2 is the structural representation of high frequency Design Fundamentals layout of the present invention;
Fig. 3 is the structural representation of high frequency design of the present invention and adjustment;
The structural representation that Fig. 4 improves the low frequency design and adjusts for the present invention;
Fig. 5 is the coordinate diagram of double frequency design performance parameters R eturn Loss of the present invention;
Fig. 6 is the coordinate diagram of double frequency design performance V parameter SWR of the present invention;
Fig. 7 is a double frequency design performance parameter Smith impedance chart of the present invention.
Embodiment
The present invention is described in detail below in conjunction with the drawings and specific embodiments.
Embodiment
As shown in Figure 1 and Figure 2, a kind of plane built-in aerial, this antenna comprises that main ground 1, harmonic high frequency are raised one's arm, parasitic branch 5, short circuit divide 4, described harmonic high frequency is raised one's arm and 8 is comprised first resonance arm 6, second resonance arm 7, the described harmonic high frequency center of raising one's arm is provided with distributing point 2, mainly the correspondence position with this distributing point is provided with earth point 3, described harmonic high frequency is raised one's arm and is connected with main ground 1 by short circuit branch 4, the left end of described first resonance arm 6 is parallel with the right-hand member of parasitic branch 5 and be in same vertical interval, is provided with the slit between described parasitic branch 5 and the main ground 1.Described short circuit branch 4 is parallel with main ground 1, and forms the slit.Described first resonance arm 6 is connected with 7 short circuits of second resonance arm.Be provided with the slit between described short circuit branch 4 and the main ground 1.
The design of high band antenna, the mode of employing balanced feeding.This balanced feeding has utilized fluting and cutting on main ground level, has formed 1/4 wavelength short branch.This short branch makes antenna feed point realize the open circuit on the microwave, thus with first resonance arm 6 of antenna, second resonance arm 7 directly short circuit in the realization high band resonances, also realized the integrated of structure together.
The design of low frequency band antenna, the mode of employing parasitic couplings increases parasitic branch 5 on main ground level, raise one's arm 6 near harmonic high frequency, by adjusting the length of spacing and parasitic branch 5, forms the low-frequency resonant part.
As shown in Figure 2, the initial designs state is the high frequency antenna design point, and antenna first resonance arm 6,7 short circuits of second resonance arm connect.Mainly parallel with first resonance arm 6, second resonance arm 7, spacing is greater than the corresponding wavelength of 0.07 times of high-frequency band center frequency point.
As shown in Figure 3, increase short circuit branch 4, the length of regulating short circuit branch 4 realizes to reach high-frequency resonant.Adjusting first resonance arm 6, second resonance arm 7 and the short circuit branch 4 of high frequency antenna radiant body and the spacing on main ground 1, is the frequency range that high-frequency resonant is operated in to be needed.
As shown in Figure 4, adjust main ground 1 length and increase parasitic branch 5, adjustment mode subsequently is followed successively by:
A. adjust the width of parasitic branch 5.
B. adjust the spacing 9 on parasitic branch 5 and main ground 1.
C. adjust the spacing 9 of the parasitic branch 5 and first resonance arm 6.
Through above-mentioned design with after adjusting repeatedly, make double-frequency resonance be operated in the frequency band that needs.Obtain good radio-frequency performance.Antenna double frequency design performance parameter such as Fig. 5, Fig. 6, shown in Figure 7.
As shown in Figure 5, the return wave loss parameter of realizing after finishing for Antenna Design.The low frequency whole frequency band is lower than-9dB; The high frequency whole frequency band is lower than-7.2dB.
As shown in Figure 6, the voltage standing wave ratio parameter that realizes after finishing for Antenna Design.The low frequency whole frequency band is lower than 2; The high frequency whole frequency band is lower than 2.5.
As shown in Figure 7, the Smith impedance chart data that realize after finishing for Antenna Design.
Claims (4)
1. plane built-in aerial, this antenna comprises that main ground, harmonic high frequency are raised one's arm, parasitic branch, short circuit branch, it is characterized in that, described harmonic high frequency is raised one's arm and is comprised first resonance arm, second resonance arm, the described harmonic high frequency center of raising one's arm is provided with distributing point, mainly the correspondence position with this distributing point is provided with earth point, described harmonic high frequency raise one's arm by short circuit branch be connected mainly, the left end of described first resonance arm is parallel with the right-hand member of parasitic branch and be in same vertical interval, is provided with the slit between described parasitic branch and the main ground.
2. a kind of plane according to claim 1 built-in aerial is characterized in that, described short circuit branch is with parallel mainly, and forms the slit.
3. a kind of plane according to claim 1 built-in aerial is characterized in that, described first resonance arm is connected with the second resonance arm short circuit.
4. a kind of plane according to claim 1 built-in aerial is characterized in that, is provided with the slit between described short circuit branch and the main ground.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102009368A CN102110870A (en) | 2009-12-25 | 2009-12-25 | Planar internal antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102009368A CN102110870A (en) | 2009-12-25 | 2009-12-25 | Planar internal antenna |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102110870A true CN102110870A (en) | 2011-06-29 |
Family
ID=44174943
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009102009368A Pending CN102110870A (en) | 2009-12-25 | 2009-12-25 | Planar internal antenna |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102110870A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103367891A (en) * | 2013-05-10 | 2013-10-23 | 上海安费诺永亿通讯电子有限公司 | Reconfigurable low-SAR (specific absorption rate) value wireless terminal antenna and wireless terminal thereof |
| WO2016045436A1 (en) * | 2014-09-24 | 2016-03-31 | 中兴通讯股份有限公司 | Wide frequency band 4g wireless terminal antenna |
| CN108206326A (en) * | 2018-02-28 | 2018-06-26 | 深圳市国质信网络通讯有限公司 | A kind of plug-in type WIFI dual-band antennas and set-top box |
| CN112490624A (en) * | 2020-11-23 | 2021-03-12 | 昆山睿翔讯通通信技术有限公司 | WiFi antenna and mobile terminal |
-
2009
- 2009-12-25 CN CN2009102009368A patent/CN102110870A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103367891A (en) * | 2013-05-10 | 2013-10-23 | 上海安费诺永亿通讯电子有限公司 | Reconfigurable low-SAR (specific absorption rate) value wireless terminal antenna and wireless terminal thereof |
| WO2016045436A1 (en) * | 2014-09-24 | 2016-03-31 | 中兴通讯股份有限公司 | Wide frequency band 4g wireless terminal antenna |
| CN108206326A (en) * | 2018-02-28 | 2018-06-26 | 深圳市国质信网络通讯有限公司 | A kind of plug-in type WIFI dual-band antennas and set-top box |
| CN108206326B (en) * | 2018-02-28 | 2023-11-21 | 深圳市国质信网络通讯有限公司 | Plug-in WIFI dual-frenquency antenna and STB |
| CN112490624A (en) * | 2020-11-23 | 2021-03-12 | 昆山睿翔讯通通信技术有限公司 | WiFi antenna and mobile terminal |
| CN112490624B (en) * | 2020-11-23 | 2024-01-09 | 昆山睿翔讯通通信技术有限公司 | WiFi antenna and mobile terminal |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US11735809B2 (en) | Antenna system and terminal device | |
| CN104022354B (en) | The mimo antenna of the low SAR high isolations of thin space | |
| CN103094690B (en) | A kind of loop aerial and associated electronic device | |
| US20140313089A1 (en) | Multi-antenna system | |
| JP6008352B2 (en) | Multi-mode broadband antenna module and wireless terminal | |
| CN203398265U (en) | Mobile phone planar built-in antenna | |
| US9130260B2 (en) | Antenna designing method and data card signal board of wireless terminal | |
| US8750947B2 (en) | Mobile device and wideband antenna structure therein | |
| JP2016526861A (en) | MIMO antenna, terminal and method for improving isolation | |
| EP2381527A1 (en) | Antenna assembly with electrically extended ground plane arrangement and associated method | |
| US20120050112A1 (en) | Antenna designing method and data card single board of wireless terminal | |
| CN205828646U (en) | Electronic installation with antenna | |
| CN104953276A (en) | Communication electric device and antenna device | |
| CA2860620A1 (en) | Small antena apparatus and method for controling the same | |
| CN102820523A (en) | Multi-band antenna | |
| CN201927704U (en) | Multi-band patch antenna | |
| CN107634338B (en) | Dual-frequency WIFI antenna and mobile terminal | |
| CN102110870A (en) | Planar internal antenna | |
| CA2738169C (en) | Antenna assembly with electrically extended ground plane arrangement and associated method | |
| CN203690490U (en) | Novel mobile terminal antenna | |
| TWI413298B (en) | Ultra wideband antenna | |
| JP2014075667A (en) | Mobile communication apparatus and antenna switching method | |
| TW201528608A (en) | Wireless communication device | |
| CN102157794B (en) | Three-frequency band antenna produced by resonating | |
| CN102790267A (en) | Broadband wireless data card antenna |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20110629 |