CN109638439A - A kind of ultra wide band NB-IoT antenna - Google Patents
A kind of ultra wide band NB-IoT antenna Download PDFInfo
- Publication number
- CN109638439A CN109638439A CN201811553247.0A CN201811553247A CN109638439A CN 109638439 A CN109638439 A CN 109638439A CN 201811553247 A CN201811553247 A CN 201811553247A CN 109638439 A CN109638439 A CN 109638439A
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- antenna
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- iot
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
- H01Q1/38—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith formed by a conductive layer on an insulating support
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/48—Earthing means; Earth screens; Counterpoises
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/50—Structural association of antennas with earthing switches, lead-in devices or lightning protectors
-
- 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
- H01Q5/307—Individual or coupled radiating elements, each element being fed in an unspecified way
-
- 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
- H01Q5/50—Feeding or matching arrangements for broad-band or multi-band operation
Abstract
A kind of ultra wide band NB-IoT antenna is claimed in the present invention, is made of side feedback metal patch, the microstrip-fed line of 50 Ω, E shape feed structure, FR-4 medium substrate and grounded metal patch.The microstrip-fed line of 50 Ω and E shape feed structure are placed in the upper surface of medium substrate；The grounded metal patch is placed in the lower surface of medium substrate, opens wide rectangular aperture thereon, and loads H-shaped couple feed patch.Novel ultra wide band NB-IoT antenna model selection of the invention is micro-strip wide-slot antenna, realize good ultra wide band characteristic, antenna realizes good impedance matching in 2.45GHz and 5.8GHz frequency range, cover WLAN frequency range and Bluetooth band, -6dB impedance bandwidth is 0.69GHz~4.66GHz and 5.58GHz~7.14GHz, the covering of NB-IoT antenna ultra wide band frequency band is realized, and structure is simple, easy processing, this antenna can keep stable performance in complex environment.
Description
Technical field
The invention belongs to the field narrowband Internet of Things (NB-IoT), especially a kind of Novel ultra wide band NB-IoT antenna.
Background technique
In recent years, with the rapid development of Internet of Things, the Internet of Things communication technology is also greatly improved.NB-IoT
(Narrow Band Internet of Things, narrowband Internet of Things) is one kind outstanding in newest technology of Internet of things, this is
In September, 2015 is set up the project new narrowband cellular communication LPWAN (the Low-Power Wide- of one kind proposed in 3GPP normal structure
Area Network, low-power consumption wide area network) technology.NB-IoT and GSM, CDMA, WCDMA etc. traditional 2G/3G cellular communication skill
Art is compared, and NB-IoT can be realized the access of magnanimity, ultralow power consumption and cost, meanwhile, NB-IoT system is able to carry out depth
Very strong penetrability is realized in covering, and it is co-located to carry out co-sited with existing mobile communication system, reduces tower top load, the
There is apparent advantage in five third-generation mobile communications, can satisfy wide area network communication requirement.Nowadays, NB-IoT is copied intelligently
Table, animal husbandry management, well lid are monitored, are had a wide range of applications in smart home, and the correlative study of NB-IoT is necessarily become
The research hotspot of the communications field.
At this stage, the application band of NB-IoT concentrates on GSM900 and DCS1800 frequency range, and the range of frequency range is 825-
915MHz and 1725-1860MHz.As NB-IoT is using more and more extensive, the compatible frequency range of terminal is increasing, such as
WLAN and Bluetooth band, and NB-IoT antenna, as a part important in NB-IoT receive-transmit system, the superiority and inferiority of performance is to whole
The communication performance of a system has very important influence, therefore designing suitable ultra wide band NB-IoT antenna is also NB-IoT system
System requirement, this improves to have and greatly help for the availability of frequency spectrum of NB-IoT system.Nowadays, for ultra wide band
The research of NB-IoT antenna is also seldom, and the ultra wide band covering of Yao Shixian NB-IoT antenna is also a present big technological difficulties.
The bandwidth of antenna is great for the transmission rate and capacity impact of communication system, at the same be also influence Antenna Design it is important because
Element, structure is complicated mostly for existing ultra-wideband antenna, and size is larger, is unfavorable for integrating with NB-IoT terminal, is not able to satisfy NB-
The communicating requirement of IoT system.In short, suitable ultra wide band NB-IoT antenna applications are in NB-IoT terminal currently not yet, no
WLAN and Bluetooth band can be covered, this is urgent problem to be solved in NB-IoT system.Therefore, it designs suitable for NB-IoT
The ultra-wideband antenna of terminal, by its bandwidth broadning to WLAN and Bluetooth band, for promoting the stability of NB-IoT system and leading to
Letter quality has important practical significance.
Summary of the invention
Present invention seek to address that the above problem of the prior art.It proposes and a kind of is meeting NB-IoT communications band requirement
Meanwhile antenna realizes good impedance matching in 2.45GHz and 5.8GHz frequency range, covers WLAN frequency range and Bluetooth band,
Realize good ultra wide band characteristic.The antenna can effectively improve the communication quality of NB-IoT system, while widen system
Communication bandwidth broadband NB-IoT antenna.Technical scheme is as follows:
A kind of broadband NB-IoT antenna, the antenna are disposed with the microstrip-fed line of 50 Ω (1), the feedback of E shape from top to bottom
Electric structure (2), FR-4 medium substrate (3), side feedback metal patch (4), grounded metal patch (5), wide rectangular aperture (6) and H-shaped
The upper table in FR-4 medium substrate (3) is arranged in coupled patch (7), the microstrip-fed line of 50 Ω (1), E shape feed structure (2)
Face, side feedback metal patch (4) overlay on FR-4 medium substrate (3) side, the grounded metal patch (5), wide rectangular aperture
(6), H-shaped coupled patch (7) is arranged in the lower surface of FR-4 medium substrate (3), and H-shaped coupled patch is in wide rectangular aperture
Portion, E shape feed structure (2) and H-shaped coupled patch (7) are oppositely arranged, wherein the microstrip-fed line of 50 Ω (1), E shape feed structure
(2) it is feed structure, adjusts resistance and the reactance of antenna, FR-4 medium substrate (3) is used for radiation medium substrate, and metal patch is presented in side
For piece (4) for feeding, grounded metal patch (5) is used for the backward radiation of antenna, and wide rectangular aperture (6) is used to form the width of antenna
Band characteristic and H-shaped coupled patch (7) are used for couple feed.
Further, the microstrip-fed line of 50 Ω (1) is rectangular metal item, and length (L1+g) is 23.5mm, width
Wf is 1.3mm.G, L1 respectively indicates the first length and the second length.
Further, the shape of E shape feed structure (2) is in E shape, is that will dig out two rectangular channels among rectangle and formed, E
Feed structure (2) the length Lp of shape structure is 15.6mm, and width Wp is 17.8mm.
Further, the length L2 of described two rectangular channels is 10mm, and width S e is 2mm.
Further, the FR-4 medium substrate is 85mm having a size of 85mm × 85mm × 1mm, length L, and width W is
85mm, H 1mm, relative dielectric constant 4.4, loss tangent 0.02.
Further, the side feedback metal patch length is Wf=1.3mm, width H=1mm.
Further, the grounded metal patch is equal with FR-4 medium substrate bottom area, having a size of 85mm × 85mm.
Further, the wide rectangular aperture is located at grounded metal patch center, having a size of 40mm × 45mm, length
Ls is 40mm, and width Ws is 45mm.
Further, the H-shaped coupled patch is made of three rectangular strips, the rectangular strip area equation of the left and right sides, in
Between rectangle connection left and right sides rectangular strip, the rectangular strip of the left and right sides is 15.4mm having a size of 15.4mm × 3mm, length Lh, wide
Band Wa is 3mm, and intermediate rectangular item is 14.2mm having a size of 14.2mm × 5mm, length Wh, and width L3 is 5mm.
It advantages of the present invention and has the beneficial effect that:
Innovative point of the present invention: using E shape feed structure and wide rectangular aperture, and H-shaped coupling is loaded on wide rectangular aperture
Feed structure, the common ultra wide band characteristic for realizing antenna.Structure is relatively new, and structure is simple, and size is smaller, has symmetrical
Structure is easy to processing and fabricating in kind, can apply well in NB-IoT terminal.WLAN and Bluetooth band are added, frequency spectrum is improved
Utilization rate.
Detailed description of the invention
Fig. 1 is that the present invention provides the antenna overlooking structure figure of preferred embodiment；
Fig. 2 is antenna side block diagram of the invention；
Fig. 3 is antenna return loss figure of the invention；
Fig. 4 is antenna input resistance figure of the invention；
Fig. 5 is antenna input reactance figure of the invention；
Fig. 6 (a) is the antenna pattern of antenna of the invention in 0.9GHz frequency point；
Fig. 6 (b) is the antenna pattern of antenna of the invention in 1.8GHz frequency point；
Fig. 6 (c) is the antenna pattern of antenna of the invention in 2.45GHz frequency point；
Fig. 6 (d) is the antenna pattern of antenna of the invention in 5.8GHz frequency point.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, detailed
Carefully describe.Described embodiment is only a part of the embodiments of the present invention.
The technical solution that the present invention solves above-mentioned technical problem is:
As shown in Fig. 1 antenna overlooking structure figure and Fig. 2 antenna side block diagram, a kind of Novel ultra wide band NB- of the invention
IoT antenna include from top to bottom the microstrip-fed line 1 of 50 Ω, E shape feed structure 2, FR-4 medium substrate 3, side feedback metal patch 4,
Grounded metal patch 5, wide rectangular aperture 6, H-shaped coupled patch 7.
The upper surface of FR-4 medium substrate 3, the side feedback is arranged in the microstrip-fed line 1 of 50 Ω, E shape feed structure 2
Sheet metal 4 overlays on 3 side of FR-4 medium substrate, and the grounded metal patch 5, wide rectangular aperture 6, the setting of H-shaped coupled patch 7 exist
The lower surface of FR-4 medium substrate 3, and inside wide rectangular aperture.
The length (L1+g) of the microstrip-fed line 1 of 50 Ω is 23.5mm, and width Wf is 1.3mm.
The total area of the E shape feed structure 2 is 15.6mm × 17.8mm, and length Lp is 15.6mm, and width Wp is
17.8mm
The FR-4 medium substrate 3 is 85mm having a size of 85mm × 85mm × 1mm, length L, and width W is 85mm, and H is
1mm, relative dielectric constant 4.4, loss tangent 0.02.
Side feedback 4 length of metal patch is Wf=1.3mm, width H=1mm.
The grounded metal patch 5 is equal with 3 bottom area of FR-4 medium substrate, having a size of 85mm × 85mm.
The wide rectangular aperture 6 is located at grounded metal patch center, and having a size of 40mm × 45mm, length Ls is
40mm, width Ws are 45mm.
The H-shaped coupled patch 7 is made of three rectangular strips, the rectangular strip area equation of the left and right sides, having a size of
15.4mm × 3mm, length Lh are 15.4mm, and broadband Wa is 3mm, and intermediate rectangular item is having a size of 14.2mm × 5mm, length Wh
14.2mm, width L3 are 5mm.
The working principle of the invention:
It modeled, emulated in electromagnetic simulation software HFSS according to above-mentioned specific implementation content, result such as Fig. 3 antenna
Return loss plot, Fig. 4 antenna input resistance figure shown in Fig. 5 antenna input reactance figure, obtain a result and show the antenna -6dB impedance
Bandwidth is 0.69GHz~4.66GHz and 5.58GHz~7.14GHz, covers the work on hand frequency of NB-IoT terminal well
Band；Antenna realizes good impedance matching in 2.45GHz and 5.8GHz frequency range, covers WLAN frequency range and Bluetooth band, opens up
Wide bandwidth of operation, realizes good ultra wideband.The antenna of proposition can improve the availability of frequency spectrum of NB-IoT system, and
The communication quality of NB-IoT system can be effectively improved.
Fig. 6 shows antenna pattern of the antenna at 0.9GHz, 1.8GHz, 2.45GHz and 5.8GHz, as can in figure
To find out, the lobe width in the main polarization direction of antenna is wider, has certain directionality, but with the gradually increasing of frequency
Greatly, the lobe broadband of antenna is reduced, and directionality enhancing can satisfy NB-IoT systematic difference demand.
The above embodiment is interpreted as being merely to illustrate the present invention rather than limit the scope of the invention.?
After the content for having read record of the invention, technical staff can be made various changes or modifications the present invention, these equivalent changes
Change and modification equally falls into the scope of the claims in the present invention.
Claims (9)
1. a kind of broadband NB-IoT antenna, which is characterized in that the antenna is disposed with the microstrip-fed line of 50 Ω from top to bottom
(1), E shape feed structure (2), FR-4 medium substrate (3), side feedback metal patch (4), grounded metal patch (5), wide rectangular aperture
(6) and H-shaped coupled patch (7), the microstrip-fed line of 50 Ω (1), E shape feed structure (2) are arranged in FR-4 medium substrate (3)
Upper surface, side feedback metal patch (4) overlays on FR-4 medium substrate (3) side, the grounded metal patch (5), wide square
Shape gap (6), H-shaped coupled patch (7) are arranged in the lower surface of FR-4 medium substrate (3), and H-shaped coupled patch is in wide rectangular slits
Inside gap, E shape feed structure (2) and H-shaped coupled patch (7) are oppositely arranged, wherein the microstrip-fed line of 50 Ω (1), E shape feed knot
Structure (2) is feed structure, adjusts resistance and the reactance of antenna, and FR-4 medium substrate (3) is used for radiation medium substrate, and metal is presented in side
For patch (4) for feeding, grounded metal patch (5) is used for the backward radiation of antenna, and wide rectangular aperture (6) is used to form antenna
Broadband character and H-shaped coupled patch (7) are used for couple feed.
2. a kind of broadband NB-IoT antenna according to claim 1, which is characterized in that the microstrip-fed line of 50 Ω (1)
For rectangular metal item, length (L1+g) is 23.5mm, and width Wf is 1.3mm.G, L1 respectively indicates the first length and the second length
Degree.
3. a kind of broadband NB-IoT antenna according to claim 1, which is characterized in that the shape of E shape feed structure (2) is in
E shape is will to dig out two rectangular channels among rectangle and formed, and feed structure (2) the length Lp of E shape structure is 15.6mm, width
Wp is 17.8mm.
4. a kind of broadband NB-IoT antenna according to claim 3, which is characterized in that the length L2 of described two rectangular channels
It is 2mm for 10mm, width S e.
5. a kind of broadband NB-IoT antenna according to claim 1, which is characterized in that FR-4 medium substrate (3) ruler
Very little is 85mm × 85mm × 1mm, and length L is 85mm, and width W is 85mm, H 1mm, relative dielectric constant 4.4, loss tangent
It is 0.02.
6. a kind of broadband NB-IoT antenna according to claim 1, which is characterized in that side feedback metal patch (4) is long
Degree is Wf=1.3mm, width H=1mm.
7. a kind of broadband NB-IoT antenna according to claim 1, which is characterized in that the grounded metal patch (5) with
FR-4 medium substrate (3) bottom area is equal, having a size of 85mm × 85mm.
8. a kind of broadband NB-IoT antenna according to claim 1, which is characterized in that the width rectangular aperture (6) is located at
Grounded metal patch (4) center, is 40mm having a size of 40mm × 45mm, length Ls, and width Ws is 45mm.
9. a kind of broadband NB-IoT antenna according to claim 1, which is characterized in that the H-shaped coupled patch (7) is by three
Rectangular strip is constituted, the rectangular strip area equation of the left and right sides, intermediate rectangular connection left and right sides rectangular strip, the square of the left and right sides
For shape item having a size of 15.4mm × 3mm, length Lh is 15.4mm, and broadband Wa is 3mm, intermediate rectangular item having a size of 14.2mm × 5mm,
Length Wh is 14.2mm, and width L3 is 5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811553247.0A CN109638439A (en) | 2018-12-18 | 2018-12-18 | A kind of ultra wide band NB-IoT antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811553247.0A CN109638439A (en) | 2018-12-18 | 2018-12-18 | A kind of ultra wide band NB-IoT antenna |
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| Publication Number | Publication Date |
|---|---|
| CN109638439A true CN109638439A (en) | 2019-04-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811553247.0A Pending CN109638439A (en) | 2018-12-18 | 2018-12-18 | A kind of ultra wide band NB-IoT antenna |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NO20220740A1 (en) * | 2022-06-29 | 2024-01-01 | ONiO AS | Monolithic combined transceiver |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW466800B (en) * | 2000-05-02 | 2001-12-01 | Jin-Lu Weng | A single-feed circularly polarized printed wide slot antenna with reduced slot size |
| TW591821B (en) * | 2003-08-08 | 2004-06-11 | Chien-Jen Wang | A miniaturized CPW-fed slot antenna with the dual-frequency operation |
| CN101931126A (en) * | 2009-06-18 | 2010-12-29 | 鸿富锦精密工业（深圳）有限公司 | Slot antenna |
| WO2014123024A1 (en) * | 2013-02-07 | 2014-08-14 | 三菱電機株式会社 | Antenna device and array antenna device |
-
2018
- 2018-12-18 CN CN201811553247.0A patent/CN109638439A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW466800B (en) * | 2000-05-02 | 2001-12-01 | Jin-Lu Weng | A single-feed circularly polarized printed wide slot antenna with reduced slot size |
| TW591821B (en) * | 2003-08-08 | 2004-06-11 | Chien-Jen Wang | A miniaturized CPW-fed slot antenna with the dual-frequency operation |
| CN101931126A (en) * | 2009-06-18 | 2010-12-29 | 鸿富锦精密工业（深圳）有限公司 | Slot antenna |
| WO2014123024A1 (en) * | 2013-02-07 | 2014-08-14 | 三菱電機株式会社 | Antenna device and array antenna device |
Non-Patent Citations (2)
| Title |
|---|
| ALIAKBAR DASTRANJ 等: ""Printed Wide-Slot Antenna for Wideband Applications"", 《IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION》 * |
| 罗志勇 等: "用于金属表面的UHF ＲFID 标签天线优化设计", 《微波学报》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NO20220740A1 (en) * | 2022-06-29 | 2024-01-01 | ONiO AS | Monolithic combined transceiver |
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Application publication date: 20190416 |