CN105261827A - RFID reader microstrip antenna - Google Patents
RFID reader microstrip antenna Download PDFInfo
- Publication number
- CN105261827A CN105261827A CN201510581360.XA CN201510581360A CN105261827A CN 105261827 A CN105261827 A CN 105261827A CN 201510581360 A CN201510581360 A CN 201510581360A CN 105261827 A CN105261827 A CN 105261827A
- Authority
- CN
- China
- Prior art keywords
- radiation patch
- groove
- ground plane
- rfid reader
- plate
- 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
Landscapes
- Waveguide Aerials (AREA)
Abstract
The invention belongs to the fields of an antenna technology and a radio frequency communication technology and relates to an RFID reader microstrip antenna. The integrated RFID reader microstrip antenna comprises a radiation patch, a copper-plated ground plane plate on a first panel of a dielectric substrate, an insulating bottom plate (support plate) on a second panel of the dielectric substrate, a probe and a nylon post, wherein the probe penetrates through the center point of the radiation patch and an output end of the ground plane plate; the nylon post supports the radiation patch; the second panel and the first panel of the dielectric substrate are opposite plate planes; a groove 1 and a groove 2 are formed in the radiation patch; two ground grooves are formed in the ground plane plate; and the groove 1, the groove 2 and the ground grooves form F-shaped grooves and are axisymmetrical about the center point. The RFID reader antenna provided by the invention is suitable for a UHF RFID reader, and has the advantages of being light in weight, small in size, low in cost, easy to form and the like.
Description
Technical field
The invention belongs to antenna technology and technology for radio frequency field, relate to a kind of RFID reader microstrip antenna.
Background technology
At present, radio-frequency (RF) identification (RFID) technology is more and more concerned by people along with the development of information technology, rfid system forms primarily of three parts: transponder (radio-frequency card and electronic tag), reader (read write line and base station) and host computer main system (middleware and network application), antenna system is as the important component part of rfid system, it is the key factor realizing RFDC, therefore antenna System Design is the key of whole rfid system application, also becomes one of current study hotspot.Antenna parameter (gain, antenna pattern etc.) directly affects the decipherment distance of reader, identified region etc., and then the performance affecting reader.Traditional reader antenna has the antenna pattern of low gain, broad beam, and volume is comparatively large, thus makes decipherment distance, identified region is restricted.Microstrip antenna has lightweight, the advantage such as volume is little, cost is low, be easy to be shaped and is used widely compared with conventional reader antenna, dielectric layer of high dielectric constant can reduce antenna size, but significantly reduce antenna gain and bandwidth, its performance is not suitable for UHFRFID reader.
To sum up, the present invention devises a kind of air layer that adopts as dielectric layer, utilizes the RFID microstrip antenna of radiation patch fluting and ground plane grooving techniques.
Summary of the invention
In order to realize, reader antenna has high-gain, decipherment distance is far away, lightweight, volume is little, cost is low, be easy to the advantages such as shaping, and invention enforcement provides a kind of RFID reader microstrip antenna.
1, a RFID reader microstrip antenna, described technical scheme is as follows:
Integrated RFID reader microstrip antenna comprises the probe of the output of radiation patch, the copper-plated ground surface plate in medium substrate first plate face, the insulating base (supporting bracket) in medium substrate second plate face, transmitted radiation paster and ground plane plate, supports the nylon column of radiation patch, and wherein the second plate face of medium substrate is relative board plane with the first plate face.Whole Antenna Design and RFID combine, and in an embodiment, design adopts air layer as dielectric layer wherein, and nylon column supports radiation patch, and be connected with ground plane plate, the height between two plates is 13mm.Radiation patch adopts the material of the fine copper of rectangle, and ground plane plate adopts FR4 insulation board one side to apply copper.
In an embodiment, radiation patch adopts long L=136mm, the rectangular copper of wide W=100mm wherein, adopts the mode of slotting in rectangular radiation patch to increase antenna electrical length, reduces resonance frequency, reduces the size of radiation patch.Microstrip antenna uses coaxial feed easily to adjust feed position, and distributing point is very little on the impact of input impedance in the displacement in width w direction, but when Width departs from center, can excite TM
1npattern, increase the cross polarization radiations of antenna, therefore in the present invention, on Width, distributing point chooses rectangular slab central point.Fluting 1 and groove 2 in radiation patch, groove 1, groove 2 form " F " shape groove with geosyncline, and about central point axial symmetry, groove 1 is of a size of 67mm × 8mm, and groove 2 is of a size of 25mm × 4mm, reduce antenna size, realize miniaturized.
In an embodiment, ground plane plate adopts rectangle FR4 insulation board one side to apply copper wherein, to be connected with the SMA connector on ground plane plate through the distributing point in radiation patch for the probe of feed and to carry out feed, probe in antenna adopts copper post, open two geosynclines at ground plane plate simultaneously, because slot on ground plane, can resonance frequency be reduced, increase bandwidth, and also have inhibitory action to back lobe.
Accompanying drawing illustrates:
Fig. 1 is the front elevational schematic of a kind of antenna in one embodiment of the invention;
Fig. 2 is the end view of a kind of antenna in one embodiment of the invention;
Embodiment:
Purport of the present invention be propose a kind of RFID reader microstrip antenna, this antenna have lightweight, volume is little, cost is low, be easy to be shaped, be applicable to the advantages such as UHFRFID reader.
Below in conjunction with accompanying drawing 1, embodiment of the present invention is described further in detail for accompanying drawing 2.
Comprise the probe of the output of radiation patch, the copper-plated ground surface plate in medium substrate first plate face, the insulating base (supporting bracket) in medium substrate second plate face, transmitted radiation paster and ground plane plate in one embodiment as shown in Figure 2, support the nylon column of radiation patch, wherein the second plate face of medium substrate is relative board plane with the first plate face.
As shown in Figure 1 because the mode of slotting in rectangular radiation patch can increase antenna electrical length, reduce resonance frequency, reduce the size of radiation patch, therefore radiation patch adopts long L=136mm, the rectangular copper of wide W=100mm, radiation patch is slotted 1 and groove 2, groove 1, groove 2 form " F " shape groove with geosyncline, and about central point axial symmetry, groove 1 is of a size of 67mm × 8mm, groove 2 is of a size of the miniaturization that 25mm × 4mm achieves antenna.As shown in Figure 1, on inventive antenna, distributing point chooses rectangular slab central point, because microstrip antenna uses coaxial feed easily to adjust feed position, distributing point is very little on the impact of input impedance in the displacement in width w direction, but when Width departs from center, can TM be excited
1npattern, increases the cross polarization radiations of antenna.
Ground plane plate adopts rectangle FR4 insulation board one side to apply copper as shown in Figure 2, be after radiation patch arranges distributing point according to aforementioned manner, probe for feed carries out feed through the distributing point in radiation patch, this probe connects the distributing point in radiation patch and the SMA connector on ground plane plate, namely radiation patch is consistent with the central point of ground plane plate, and the height H=13mm between radiation patch and ground plane plate.Ground plane plate is opened two geosynclines as shown in Figure 1, ground plane is slotted, reduce resonance frequency, increase bandwidth, and also have inhibitory action to back lobe.
By great many of experiments and emulation, after finite element analysis is carried out to above-mentioned parameter, obtain above-mentioned size relevant mutually when microstrip antenna is as far as possible little.As everyone knows, for the equipment of antenna type, change in size small in structure, namely can produce larger impact to the performance of antenna.Further, in field of antenna, reference vector is more, and has certain correlation between each dimensional parameters, only has by entire physical according to above-mentioned size design, can obtain the good gain of desirable bandwidth sum.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (4)
1. a RFID reader microstrip antenna, it is characterized in that: described antenna comprises the probe of the output of radiation patch, the copper-plated ground surface plate in medium substrate first plate face, the insulating base (supporting bracket) in medium substrate second plate face, transmitted radiation paster and ground plane plate, supports the nylon column of radiation patch, and wherein the second plate face of medium substrate is relative board plane with the first plate face.
2. a kind of RFID reader microstrip antenna according to claim 1, it is characterized in that: described radiation patch adopts long L=136mm, the rectangular copper of wide W=100mm, in radiation patch, fluting 1 and groove 2, ground plane plate is opened two geosynclines, and groove 1, groove 2 form " F " shape groove with geosyncline, and about central point axial symmetry, groove 1 is of a size of 67mm × 8mm, and groove 2 is of a size of 25mm × 4mm, and in radiation patch, distributing point chooses rectangular slab central point.
3. a kind of RFID reader microstrip antenna according to claim 1, it is characterized in that: ground plane plate adopts rectangle FR4 insulation board one side to apply copper, after radiation patch arranges distributing point, probe for feed carries out feed through the distributing point in radiation patch, this probe adopts copper post, this probe connects the distributing point in radiation patch and the SMA connector on ground plane plate, namely radiation patch is consistent with the central point of ground plane plate, and the height H=13mm between radiation patch and ground plane plate.
4. a kind of RFID reader microstrip antenna according to claim 1, is characterized in that: described medium substrate is FR4 insulation board, and insulation board adds by epoxy resin the composite material that filler (Filler) and glass fibre are made.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510581360.XA CN105261827A (en) | 2015-09-10 | 2015-09-10 | RFID reader microstrip antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510581360.XA CN105261827A (en) | 2015-09-10 | 2015-09-10 | RFID reader microstrip antenna |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105261827A true CN105261827A (en) | 2016-01-20 |
Family
ID=55101395
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510581360.XA Pending CN105261827A (en) | 2015-09-10 | 2015-09-10 | RFID reader microstrip antenna |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105261827A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106207378A (en) * | 2016-07-13 | 2016-12-07 | 天津工业大学 | A kind of RFID reader beam switchover type smart antenna |
| CN108923111A (en) * | 2018-06-07 | 2018-11-30 | 合肥工业大学 | A kind of UHF RFID near field reader antenna applied to liquid environment |
| CN113285204A (en) * | 2021-04-23 | 2021-08-20 | 宁波大学 | Ultrahigh frequency RFID anti-metal tag antenna based on microstrip structure |
| CN113381164A (en) * | 2021-04-08 | 2021-09-10 | 上海磐启微电子有限公司 | Back-feed coupling WIFI antenna |
-
2015
- 2015-09-10 CN CN201510581360.XA patent/CN105261827A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106207378A (en) * | 2016-07-13 | 2016-12-07 | 天津工业大学 | A kind of RFID reader beam switchover type smart antenna |
| CN108923111A (en) * | 2018-06-07 | 2018-11-30 | 合肥工业大学 | A kind of UHF RFID near field reader antenna applied to liquid environment |
| CN113381164A (en) * | 2021-04-08 | 2021-09-10 | 上海磐启微电子有限公司 | Back-feed coupling WIFI antenna |
| CN113285204A (en) * | 2021-04-23 | 2021-08-20 | 宁波大学 | Ultrahigh frequency RFID anti-metal tag antenna based on microstrip structure |
| CN113285204B (en) * | 2021-04-23 | 2022-05-31 | 宁波大学 | Ultrahigh frequency RFID anti-metal tag antenna based on microstrip structure |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106961016B (en) | Four-unit MIMO antenna with different polarization and directional patterns | |
| US9627775B2 (en) | Microstrip antenna | |
| KR100848237B1 (en) | Wireless tag and antenna for wireless tag | |
| CN107154528B (en) | Single radiator-based compact single-layer planar structure tri-polarization MIMO antenna | |
| CN108717992A (en) | The Dual-polarized electricity magnetic-dipole antenna of millimeter wave differential feed | |
| US8279125B2 (en) | Compact circular polarized monopole and slot UHF RFID antenna systems and methods | |
| CN101483279B (en) | Antenna system for production circular polarized wave by PIFA antenna | |
| CN108281776B (en) | UHF RFID card reader system and card reader antenna thereof | |
| CN101895011B (en) | Wideband printing antenna with symmetrical dipole-antipodal slot line composite structure | |
| CN106329106A (en) | Broadband high-isolation low-cross-polarization dual-polarization microstrip antenna array based on SIW technology | |
| CN105514599A (en) | Ultrahigh frequency electronic tag antenna | |
| CN105261827A (en) | RFID reader microstrip antenna | |
| CN103515710A (en) | Dual-band slot antenna based on half-mode substrate integrated waveguide | |
| CN108134196A (en) | Microstrip antenna and television set | |
| CN209344301U (en) | Ultrahigh frequency RFID anti-metal tag antenna | |
| US20100315195A1 (en) | Methods and apparatus for a dual polarization antenna system | |
| CN112003018A (en) | Electronic device | |
| He et al. | A compact ultra-wideband circularly polarized antenna array for vehicular communications | |
| CN203456593U (en) | Dual-band slot antenna based on half-mode substrate integrated waveguide | |
| CN116191053A (en) | Novel RFID yagi antenna | |
| CN110233341A (en) | A kind of broadband dual polarized antenna of line of rabbet joint low section | |
| CN113285204B (en) | Ultrahigh frequency RFID anti-metal tag antenna based on microstrip structure | |
| US20240047874A1 (en) | Dual-band patch antenna for angle-of-arrival analysis | |
| CN102394364B (en) | Multifunctional ceramic slit antenna for distributing, loading and coupling in WIFI (Wireless Fidelity) compatible Big Dipper | |
| CN104157971A (en) | PIFA antenna with double-layer mushroom-type EBG structure being as ground plate and in capacitor structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160120 |