CN204885431U - A rectangle cyclic annular " T " shape dual -frenquency microstrip antenna for WLAN - Google Patents
A rectangle cyclic annular " T " shape dual -frenquency microstrip antenna for WLAN Download PDFInfo
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- CN204885431U CN204885431U CN201520704616.7U CN201520704616U CN204885431U CN 204885431 U CN204885431 U CN 204885431U CN 201520704616 U CN201520704616 U CN 201520704616U CN 204885431 U CN204885431 U CN 204885431U
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Abstract
The utility model discloses a WLAN's cyclic annular " T " shape unit dual -frenquency microstrip antenna that adds of rectangle, this antenna can be applied to among the wireless LAN communication system. This antenna comprises medium base plate, microstrip feeder, radiating element, ground plane. The microstrip feeder links to each other with radiating element, is located the openly below of medium base plate, and radiating element is the inside embedding of straight -flanked ring " T " shape modular construction, is located the openly top of medium base plate, and the ground plane is located medium back of the substrate below, for rectangle symmetrical structure. The utility model discloses the simple structure of dual -frenquency antenna, easily processing, resonant frequency is convenient adjustable, and it is good that the passband matches the characteristic.
Description
Technical field
The utility model belongs to field of antenna, particularly relates to the "T"-shaped double-frequency micro-strip antenna of a kind of rectangular ring for WLAN.
Background technology
In the development course of wireless communication technology, because WLAN (wireless local area network) (WLAN) has flexibly advantage easily, obtain and pay close attention to all the more widely and pay attention to, therefore the receive-transmit system of people to WLAN proposes higher stricter requirement.The passband scope of the WLAN (wireless local area network) that IEEE802.11 specifies is 2.45GHz (2.4-2.484GHz), 5.2GHz (5.15-5.35GHz) and 5.8GHz (5.725-5.825GHz), obtains application widely at present.
Antenna plays vital role in the receive-transmit system of WLAN, especially monopole antenna.Current monopole antenna has that volume is little, profile is low, is easy to processing and is easy to realize the features such as multiple-frequency operation, is widely used in a wireless communication system.The method that monopole antenna realizes multiple-frequency operation has a lot, and wherein comparatively conventional have multi-disc method, racemosus save method and monolithic method.Multiple pasters that multi-disc method utilizes resonance frequency different are stacked together, thus produce multiple frequency; Racemosus joint method is combined by the radiating element of different resonance frequency to carry out work; Monolithic method be evoke in the cavity of monolithic microband paste different resonance frequency pattern and work.
The design utilizes racemosus to save method and proposes a kind of monopole microstrip antenna that can be applied to WLAN.This antenna structure is simple, can adjust very easily, and can make up the many defects in design in the past by changing antenna size parameter to two resonance frequencys of antenna., there is the problem that frequency band is narrower, adopt more desirable radiation patch structure can increase the bandwidth of operation of antenna further in the monopole antenna that the people such as such as Gai Shuo mention at " a kind of miniaturized monopole antenna being applied to WLAN (wireless local area network) of novelty "; The people such as Han Jiwei mention a kind of monopole antenna being applied to WLAN in " design of the C type double frequency WLAN microstrip antenna of CPW feed ", employ the feeding classification of co-planar waveguide, and adopt C shape radiation patch structure, although increase substantially bandwidth, the directivity of high band is poor; The people such as youngest brother are sent to mention a kind of monopole antenna being applied to WLAN at " a kind of small sized double frequency wideband printed monopole antenna for WLAN ", although its structure is simple, high band
s 11instability, is difficult to meet the actual needs used.The design has good radiation characteristic in the frequency range of IEEE802.11b/g and the IEEE802.11a prescribed by standard of WLAN, and all has good directivity in each working frequency points, the requirement of realistic application.
Summary of the invention
The utility model relates to the "T"-shaped double-frequency micro-strip antenna of a kind of rectangular ring for WLAN, and structure is simple, is easy to processing.Adopt the feeding classification of microstrip line, radiation patch adopts the structure adding "T"-shaped minor matters in straight-flanked ring, two resonance frequencys (2.4GHz and 5.2GHz) of antenna can be adjusted by the Net long wave radiation length adjusting straight-flanked ring and "T"-shaped minor matters, the length and the width that change microstrip line can realize impedance matching, and effectively reduce the return loss of whole operating frequency range.
The utility model adopts following technical scheme:
The "T"-shaped double-frequency micro-strip antenna of rectangular ring that the utility model is used for WLAN comprises medium substrate 101, ground plane 201, radiating element 301,302, microstrip feed line 401, it is characterized in that: described medium substrate 101 front is printed with radiating element 301,302, microstrip feed line 401.Described microstrip feed line 401 is connected with radiating element 301,302, below the front being positioned at medium substrate 101.Described radiating element 301,302 is positioned at the upper front of medium substrate 101, and wherein radiating element 301 is rectangular ring structure, and radiating element 302 is embedded in inside 301, and shape is "T"-shaped structure, is gap 303 in the middle part of in the of 301 and 302.Described ground plane 201 is positioned at immediately below the antenna back side, is rectangular symmetrical structure.
The utility model compared with prior art, has following remarkable advantage:
1, structure is simple: the utility model structure is simple, is easy to processing;
2, band connection frequency is adjustable: the utility model adopts rectangular ring to add "T"-shaped cellular construction, by changing straight-flanked ring and "T"-shaped effective length, can regulate two resonance frequencys of antenna easily.
Accompanying drawing explanation
Fig. 1 is the front elevation of the utility model for the "T"-shaped double-frequency micro-strip antenna of rectangular ring of WLAN.
Fig. 2 is the back view of the utility model for the "T"-shaped double-frequency micro-strip antenna of rectangular ring of WLAN.
Fig. 3 is the return loss plot figure of the utility model for the "T"-shaped double-frequency micro-strip antenna of rectangular ring of WLAN.
Fig. 4 is the voltage standing wave ratio curve chart of the utility model for the "T"-shaped double-frequency micro-strip antenna of rectangular ring of WLAN.
Fig. 5 is the utility model for the "T"-shaped double-frequency micro-strip antenna of rectangular ring of WLAN at the directional diagram of 2.4GHz.
Fig. 6 is the utility model for the "T"-shaped double-frequency micro-strip antenna of rectangular ring of WLAN at the directional diagram of 5.2GHz.
Fig. 7 is the utility model for the "T"-shaped double-frequency micro-strip antenna of rectangular ring of WLAN at the directional diagram of 5.8GHz.
Embodiment
Below in conjunction with embodiment and accompanying drawing, the utility model is described in further detail.
As shown in Figure 1, radiating element 301,302 are positioned at medium substrate 101 upper front, and radiating element 301 is rectangular ring structure, and straight-flanked ring 301 inside is "T"-shaped structure 302, radiating element 301, and the middle part of 302 is gaps 303.Microstrip feed line 401 is positioned at medium substrate 101 front, radiating element 301, and below 302, and radiating element 302 and microstrip feed line 401 are all bilateral symmetry.Ground plane 201 is positioned at medium substrate 101 lower rear, be also symmetrical rectangular configuration.
See Fig. 1, label 101 is medium substrates, and its material is polytetrafluoroethylene (FR-4), and its dielectric constant is 4.4, and the size of its length and width thickness is 35mm × 55mm × 1.6mm; Label 301,302 is the "T"-shaped radiation patch of rectangular ring, and the size of straight-flanked ring 301 is 24mm × 22mm, 9.6mm × 3mm during the size of inner "T"-shaped minor matters 302; Label 401 is microstrip feed lines, and its length and width are of a size of 1mm × 18mm.See Fig. 2, label 201 is the ground planes at medium substrate 101 back side, and length and width are of a size of 35mm × 23mm, rectangular symmetrical structure.
Fig. 3 is the return loss plot figure of the present embodiment, and as can be seen from Figure 3 this antenna return loss in 2.04-2.98GHz and 4.85-6GHz frequency range is less than-10dB, meets the application requirement of WLAN completely.Fig. 4 is the voltage standing wave ratio curve chart of the present embodiment, and as can be seen from Figure 4 it is less than 2 at 2.04-2.98GHz and 4.85-6GHz frequency range standing internal wave ratio equally, corresponding with Fig. 3 return loss plot.
As the directional diagram of Fig. 5,6,7 this antenna that is the present embodiment respectively when 2.4GHz, 5.2GHz, 5.8GHz, as can be seen from the figure the present embodiment has good directivity in whole frequency range, meets design requirement.
Above-mentioned example is the utility model preferably execution mode, in addition on the basis of the present embodiment, changes size and the size of radiating element, microstrip feed line and ground plane, all should be included in protection range of the present utility model.
Claims (2)
1. the straight-flanked ring for WLAN adds the double-frequency micro-strip antenna of "T"-shaped structure, its composition comprises medium substrate, radiating element, microstrip feed line and ground plane, it is characterized in that: described straight-flanked ring adds "T"-shaped double-frequency micro-strip antenna and is printed on medium substrate, antenna face is printed with straight-flanked ring unit, ring is embedded in radiating element, the microstrip feed line of "T"-shaped structure, and back up has rectangular ground plane.
2. the straight-flanked ring for WLAN according to claim 1 adds the double-frequency micro-strip antenna of "T"-shaped structure, it is characterized in that: radiating element is positioned at directly over medium substrate, be connected with microstrip feed line, microstrip feed line is positioned at immediately below medium substrate, described ground plane is positioned at immediately below the back side of medium substrate, rectangular symmetrical structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520704616.7U CN204885431U (en) | 2015-09-14 | 2015-09-14 | A rectangle cyclic annular " T " shape dual -frenquency microstrip antenna for WLAN |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520704616.7U CN204885431U (en) | 2015-09-14 | 2015-09-14 | A rectangle cyclic annular " T " shape dual -frenquency microstrip antenna for WLAN |
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| CN204885431U true CN204885431U (en) | 2015-12-16 |
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| CN201520704616.7U Expired - Fee Related CN204885431U (en) | 2015-09-14 | 2015-09-14 | A rectangle cyclic annular " T " shape dual -frenquency microstrip antenna for WLAN |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105552536A (en) * | 2016-02-23 | 2016-05-04 | 深圳大学 | Monopole dual-band WLAN/WiMAX antenna |
| CN106785466A (en) * | 2016-12-28 | 2017-05-31 | 华南理工大学 | A kind of three frequency filter antennas with high-frequency selectivity |
| CN106816701A (en) * | 2017-01-16 | 2017-06-09 | 西安电子科技大学 | Double frequency round polarized microstrip antenna |
| CN107634341A (en) * | 2017-08-22 | 2018-01-26 | 南京邮电大学 | Double-frequency broadband butterfly shaped plane antenna |
| CN108258387A (en) * | 2016-12-28 | 2018-07-06 | 上海圣丹纳电子科技股份有限公司 | A kind of mobile unit antenna of closed loop configuration |
| CN113839197A (en) * | 2021-08-31 | 2021-12-24 | 电子科技大学 | Multi-frequency Wireless Local Area Network (WLAN) monopole antenna |
-
2015
- 2015-09-14 CN CN201520704616.7U patent/CN204885431U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105552536A (en) * | 2016-02-23 | 2016-05-04 | 深圳大学 | Monopole dual-band WLAN/WiMAX antenna |
| CN105552536B (en) * | 2016-02-23 | 2018-05-29 | 深圳大学 | A kind of monopole double frequency-band WLAN/WiMAX antennas |
| CN106785466A (en) * | 2016-12-28 | 2017-05-31 | 华南理工大学 | A kind of three frequency filter antennas with high-frequency selectivity |
| CN108258387A (en) * | 2016-12-28 | 2018-07-06 | 上海圣丹纳电子科技股份有限公司 | A kind of mobile unit antenna of closed loop configuration |
| CN106785466B (en) * | 2016-12-28 | 2023-04-21 | 华南理工大学 | Three-frequency filtering antenna with high frequency selectivity |
| CN108258387B (en) * | 2016-12-28 | 2023-09-05 | 上海圣丹纳无线科技有限公司 | Vehicle-mounted equipment antenna with closed-loop structure |
| CN106816701A (en) * | 2017-01-16 | 2017-06-09 | 西安电子科技大学 | Double frequency round polarized microstrip antenna |
| CN107634341A (en) * | 2017-08-22 | 2018-01-26 | 南京邮电大学 | Double-frequency broadband butterfly shaped plane antenna |
| CN113839197A (en) * | 2021-08-31 | 2021-12-24 | 电子科技大学 | Multi-frequency Wireless Local Area Network (WLAN) monopole antenna |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170502 Address after: Double Town Industrial Park Tianjin city 300222 Jinnan Hengde Industrial Park building 45 109-3 Patentee after: Tianjin dragon Maoming Wei Technology Co., Ltd. Address before: 300222 Dagu South Road, Jinnan District, No. 1310, No. Patentee before: Tianjin University of Technology and Education |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151216 Termination date: 20190914 |