CN105161855A - 433 MHz miniaturization omnidirectional micro-strip antenna and manufacture method - Google Patents
433 MHz miniaturization omnidirectional micro-strip antenna and manufacture method Download PDFInfo
- Publication number
- CN105161855A CN105161855A CN201510628217.1A CN201510628217A CN105161855A CN 105161855 A CN105161855 A CN 105161855A CN 201510628217 A CN201510628217 A CN 201510628217A CN 105161855 A CN105161855 A CN 105161855A
- Authority
- CN
- China
- Prior art keywords
- antenna
- length
- width
- rectangular slot
- helical form
- 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 discloses a 433 MHz miniaturization omnidirectional micro-strip antenna and a manufacture method, comprising steps of designing a resonance portion of an antenna into a spiral shape to reduce the space occupied by the antenna on the basis of an inverted F antenna, using a meander technology to change the current intensity distribution on the micro-strip paster surface and the grounding surface to increase the effective length of the current, enabling the antenna to resonate to -33MHz and enabling characteristic impedance to be 50 Omega, using an HFSS software to perform simulation and optimization on the antenna structure, wherein the return loss of the micro-strip antenna at the 433MHz resonance point is smaller than -30dB, the gain is -22--38 and the omnidirectional is good. The invention is simple in manufacture technology of the micro-strip line, and the micro-stripe line produced through the invention is small in volume, low in profile and is widely applicable to the portable short distance communication system.
Description
Technical field
The invention belongs to wireless communication technology field, be specifically related to a kind of omnidirectional microstrip antenna for portable mobile communication system.
Background technology
Along with wireless electronic product becomes more and more less, more and more thinner, the miniaturization of antenna becomes more and more important.The miniaturization method of microstrip antenna mainly contains surperficial meander technology, short circuit loading technique, adopts substrate, fractal technology, the employing special shape of high-k, is attached with source network etc.; but the miniaturization of microstrip antenna can reduce the performance of antenna usually, as the increase of antenna surface ripple, the reduction of gain, the minimizing of bandwidth.Meander technology exactly by reasonably slotting on microstrip transmission line, thus adds the effective length of electric current, reaches the object of antenna miniaturization.Short circuit loading technique is exactly ground connection on the middle zero potential line that length is the rectangular microstrip antenna of 1/2nd operation wavelengths, thus is 1/4th operation wavelengths by the length reduction of antenna, realizes the miniaturization of antenna
[1].At present using more in 433MHz frequency range is Straight Wire Antenna or helical antenna, but the space shared by this antenna is unfavorable for more greatly the miniaturization of equipment, and needs to be welded to separately on pcb board and add production procedure.Microstrip antenna has the advantages such as low, lightweight, the convenient embedding of section, but the microstrip antenna of 433MHz frequency range is not but used widely, mainly due to volume still larger inconvenient embedded equipment, the shortcomings such as return loss is higher, antenna radiation efficiency is low, bandwidth is narrower.
Documents
[1] research [D] of Yang Hong continuous heavy rain .433M small-sized microstrip antenna. Nanjing: Nanjing Univ. of Posts and Telecommunications, 2012.2
Summary of the invention
The object of the present invention is to provide miniaturized omnidirectional microstrip antenna of a kind of 433MHz and preparation method thereof, with miniature antenna volume, be beneficial to and embed mobile portable equipment, and bandwidth is broadened.
In order to solve above technical problem, the technical solution adopted in the present invention is as follows:
Step one, adopts helical form primary radiation part, in conjunction with short circuit loading technique and meander technology, and structure microstrip antenna.
Step 2, utilizes FSS simulation software to carry out antenna structure optimization, draws optimization antenna structure.
The concrete antenna structure of the present invention is as follows:
The miniaturized omnidirectional microstrip antenna of a kind of 433MHz, comprises medium substrate (1), ground plane (2), helical form primary radiation part (3), rectangle feeder line (4), short-circuit piece (5), impedance transformer (6), the first rectangular slot line (2a) and the second rectangular slot line (2b), it is characterized in that: described helical form primary radiation part (3), rectangle feeder line (4) and impedance transformer (6) are printed on the front of medium substrate (1), ground plane (2) is printed on the back side of medium substrate (1), short-circuit piece (5) is for connecting impedance transformer (6) and ground plane (2), helical form primary radiation part (3) effectively reduces the space of the medium substrate occupied by reversed F-typed microstrip antenna, the effective length that first rectangular slot line (2a) and the second rectangular slot line (2b) add electric current reduces resonance frequency, the length of antenna is reduced to 1/4 wavelength from 1/2 wavelength by short-circuit piece (5), the length of medium substrate (1) is l
1, width is w
1, be highly h
1, the length of ground plane (2) is l
1, width is w
2, the length of the first rectangular slot line (2a) is l
2, width is w
3, be w with the distance of top edge
9, the length of the second rectangular slot line (2b) is l
3, width is w
3, be w with the distance of lower limb
8, the length of short-circuit piece (5) is l
4, be highly h
1, impedance transformer (6) is made up of two parts: a part of length is l
5, width is w
5, another part length is l
4, width is w
4, the length of rectangle feeder line (4) is l
6, width is w
6, helical form primary radiation part (3) is made up of six parts: be respectively l by clockwise Part I to the length of Part V
7, l
8, l
9, l
10, l
11, width is w
5, the length of Part VI is l
12, width w
7,
Described medium substrate (1) is glass-epoxy FR4 material, and the material of ground plane (2), helical form primary radiation part (3), rectangle feeder line (4), short-circuit piece (5), impedance transformer (6) is copper;
The value of each parameter is l
1=20mm; l
2=12mm; l
3=13mm; l
4=1mm; l
5=2mm; l
6=3mm; l
7=15mm; l
8=17mm; l
9=14mm; l
10=12mm; l
11=10mm; l
12=4mm; w
1=23mm; w
2=18mm; w
3=1mm; w
4=2mm; w
5=3mm; w
6=20mm; w
7=10mm; w
8=5mm; w
9=7mm; h
1=1.6mm.
Described helical form primary radiation part (3) is helical form.
Through carrying out design and optimization to ground plane, described first rectangular slot line (2a) and the second rectangular slot line (2b) are the rectangular slot on ground plane (2).
By above design, the present invention ensures that antenna resonant frequency is under the prerequisite of 433MHz, reduce antenna take up space, antenna return loss is less than-30dB, 50 Ω impedance matchings are good, add antenna circular polarization characteristics and bandwidth.
The volume of 433MHz microstrip antenna of the present invention is only 23mm × 20mm × 1.6mm, simple, the convenient embedding of structure, medium substrate (1) adopts glass-epoxy (FR4) material, and antenna sections can directly corrode to make material object on a printed circuit.
The present invention has beneficial effect
The present invention is by adopting the volume reducing reversed F-typed micro-band sky of short circuit loading technique and meander technology effective, primary radiation part adopts helicoidal structure to reduce antenna further and taken up space, the circular polarization characteristics simultaneously adding antenna extends bandwidth, and antenna only has a resonance frequency can avoid the interference of other frequencies.Concrete effect is as follows:
(1) volume is little, structure is simple, convenient embedding, and the length of antenna is respectively 23mm, 20mm, 1.6mm;
(2) return loss (S
11) little, frequency resonant point return loss is less than-30dB;
(3) be with roomy, antenna, in 430.1919 ~ 436MHz frequency range, has S
11<-10dB, impedance bandwidth is about 6MHz;
The feed forward program controller impedance of (4) 50 Ω matches, and the normalized impedance of antenna is (1.0965+0.0317j) Ω, is convenient to mate with system miscellaneous part with integrated.
Accompanying drawing explanation
Fig. 1 is structure three-view diagram of the present invention;
Fig. 2 is the return loss (S after HFSS simulation software of the present invention optimizes helical form primary radiation part
11) Parameter Map;
Fig. 3 is the final return loss (S after HFSS software emulation of the present invention is optimized
11) Parameter Map;
Fig. 4 is the SmithChart figure after HFSS software emulation of the present invention is optimized;
Fig. 5 is the directional diagram after HFSS software emulation of the present invention is optimized;
In figure: 1 medium substrate, 2 ground planes, 3 helical form primary radiation parts, 4 rectangle feeder lines, 5 short-circuit pieces, 6 impedance transformers, 2a first rectangular slot line, 2b second rectangular slot line.
Embodiment
Below in conjunction with accompanying drawing, specific embodiment of the invention scheme is described in further detail.
As shown in Figure 1, this structure comprises medium substrate 1, ground plane 2, helical form primary radiation part 3, rectangle feeder line 4, short-circuit piece 5, impedance transformer 6, first rectangular slot line 2a and the second rectangular slot line 2b to antenna structure.Medium substrate 1 is glass-epoxy (FR4) material, and relative dielectric constant is 4.4, loss tangent tan δ=0.02, and volume is 23mm × 20mm × 1.6mm.Helical form primary radiation part 3, rectangle feeder line 4, impedance transformer 6 are positioned at the front of medium substrate.Wherein helical form primary radiation part 3 is made up of six parts, and the width of the first five part is all w
5: 3mm, is followed successively by l by the length of clockwise the first to Part V
7: 15mm, l
8: 17mm, l
9: 14mm, l
10: 12mm, l
11: 10mm, the length l of Part VI
12: 4mm, width w
7: 10mm; The edge that rectangle feeder line 4 extends to medium substrate always facilitates the enforcement of coaxial feed and feed microstrip line; Impedance transformer 6 is made up of two parts, Part I length 3mm, width 3mm, Part II length by length 1mm, width 2mm, and Part II is connected with the short-circuit piece of length 1mm, height 1.6mm and realizes short-circuit function.Ground plane 2, first rectangular slot line 2a and the second rectangular slot line 2b is positioned at the back side of medium substrate, and wherein the first rectangular slot line 2a and the second rectangular slot line 2b is the rectangular slot structure of ground plane 2.The length 20mm of ground plane 2, width 18mm; Length 12mm, the width 1mm of the first rectangular slot line 2a, be w with the top edge distance of ground plane 2
9: length 13mm, the width 1mm of 7mm, the second rectangular slot line 2b, be w with the lower limb distance of ground plane 2
8: 5mm.
Adopt the device shown in Fig. 1 to realize the miniaturization of antenna, be optimized by the structure of HFSS software to helical form shape primary radiation part 3, simulation result as shown in Figure 2, at l
7: 15mm; l
8: 17mm; l
9: 14mm; l
10: 12mm; l
11: 10mm; l
12: 4mm; w
5: 3mm; w
7: 10mm; Condition under, antenna resonance is to about 450MHz, and return loss is about-24dB.
The device shown in Fig. 1 is adopted to realize the miniaturization of antenna, by HFSS software, the first rectangular slot line 2a on ground plane 2 and the second rectangular slot line 2b is optimized, simulation result as shown in Figure 3, at length 12mm, the width 1mm of the second rectangular slot line 2b, the top edge w9:7mm of distance ground plane 2, when the lower limb w8:5mm of length 13mm, the width 1mm of the second rectangular slot line 2b, distance ground plane 2, antenna resonance is to 433MHz, and return loss also drops to-33dB simultaneously.
Utilize the optimization of HFSS simulation software to obtain antenna optimum size, Fig. 3 obtains optimal antenna return wave loss parameter analogous diagram, as seen from the figure, at the minimum (S of 433MHz resonance frequency place return loss after inventive antenna debugging
11≈-33dB), in 430.1919 ~ 436Mhz frequency range, there is S
11<-10dB, impedance bandwidth is about 6MHz.Fig. 4 is the best SmithChart obtained after inventive antenna debugging, draws normalized impedance (1.0965+0.0317j) Ω of antenna from figure, and 50 Ω feed forward program controller impedance couplings are good.Fig. 5 is the xz face of inventive antenna three-dimensional cartesian coordinate system and the antenna pattern in yz face, and the omnidirectional radiation characteristic variations of antenna is less, and illustrating has good omnidirectional radiation characteristic at whole frequency domain internal antenna.
Claims (4)
1. a manufacture method for the miniaturized omnidirectional microstrip antenna of 433MHz, is characterized in that comprising the following steps:
Step one, adopts helical form primary radiation part, in conjunction with short-circuit piece loading technique and meander technology, and structure microstrip antenna;
Step 2, utilizes FSS simulation software to carry out antenna structure optimization, draws optimization antenna structure.
2. the antenna of the manufacture method making of the miniaturized omnidirectional microstrip antenna of a kind of 433MHz according to claim 1, comprises medium substrate (1), ground plane (2), helical form primary radiation part (3), rectangle feeder line (4), short-circuit piece (5), impedance transformer (6), the first rectangular slot line (2a) and the second rectangular slot line (2b), it is characterized in that: described helical form primary radiation part (3), rectangle feeder line (4) and impedance transformer (6) are printed on the front of medium substrate (1), ground plane (2) is printed on the back side of medium substrate (1), short-circuit piece (5) is for connecting impedance transformer (6) and ground plane (2), helical form primary radiation part (3) effectively reduces the space of the medium substrate occupied by reversed F-typed microstrip antenna, the effective length that first rectangular slot line (2a) and the second rectangular slot line (2b) add electric current reduces resonance frequency, the length of antenna is reduced to 1/4 wavelength from 1/2 wavelength by short-circuit piece (5), the length of medium substrate (1) is l
1, width is w
1, be highly h
1, the length of ground plane (2) is l
1, width is w
2, the length of the first rectangular slot line (2a) is l
2, width is w
3, be w with the distance of top edge
9, the length of the second rectangular slot line (2b) is l
3, width is w
3, be w with the distance of lower limb
8, the length of short-circuit piece (5) is l
4, be highly h
1, impedance transformer (6) is made up of two parts: a part of length is l
5, width is w
5, another part length is l
4, width is w
4, the length of rectangle feeder line (4) is l
6, width is w
6, helical form primary radiation part (3) is made up of six parts: be respectively l by clockwise Part I to the length of Part V
7, l
8, l
9, l
10, l
11, width is w
5, the length of Part VI is l
12, width w
7,
Described medium substrate (1) is glass-epoxy FR4 material, and the material of ground plane (2), helical form primary radiation part (3), rectangle feeder line (4), short-circuit piece (5), impedance transformer (6) is copper;
The value of each parameter is l
1=20mm; l
2=12mm; l
3=13mm; l
4=1mm; l
5=2mm; l
6=3mm; l
7=15mm; l
8=17mm; l
9=14mm; l
10=12mm; l
11=10mm; l
12=4mm; w
1=23mm; w
2=18mm; w
3=1mm; w
4=2mm; w
5=3mm; w
6=20mm; w
7=10mm; w
8=5mm; w
9=7mm; h
1=1.6mm.
3. the miniaturized omnidirectional microstrip antenna of a kind of 433MHz according to claim 2, is characterized in that: improve through dividing the main radiation portion of reversed F-typed microstrip antenna and optimize, described helical form primary radiation part (3) is helical form.
4. the miniaturized omnidirectional microstrip antenna of a kind of 433MHz according to Claims 2 or 3, it is characterized in that: through carrying out design and optimization to ground plane, described first rectangular slot line (2a) and the second rectangular slot line (2b) are the rectangular slot on ground plane (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510628217.1A CN105161855A (en) | 2015-09-28 | 2015-09-28 | 433 MHz miniaturization omnidirectional micro-strip antenna and manufacture method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510628217.1A CN105161855A (en) | 2015-09-28 | 2015-09-28 | 433 MHz miniaturization omnidirectional micro-strip antenna and manufacture method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105161855A true CN105161855A (en) | 2015-12-16 |
Family
ID=54802657
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510628217.1A Pending CN105161855A (en) | 2015-09-28 | 2015-09-28 | 433 MHz miniaturization omnidirectional micro-strip antenna and manufacture method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105161855A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105609925A (en) * | 2016-02-29 | 2016-05-25 | 国网新疆电力公司昌吉供电公司 | Outdoor antenna for medium-voltage switchgear |
| CN105870617A (en) * | 2016-05-06 | 2016-08-17 | 深圳洲斯移动物联网技术有限公司 | Ultra-small 433 MHz built-in FPC antenna |
| CN109411900A (en) * | 2018-12-14 | 2019-03-01 | 湖南华诺星空电子技术有限公司 | A kind of broad-band antenna for through-wall radar imaging |
| WO2019154080A1 (en) * | 2018-02-06 | 2019-08-15 | 中兴通讯股份有限公司 | Antenna device and terminal |
| CN116864958A (en) * | 2023-05-30 | 2023-10-10 | 中煤科工集团武汉设计研究院有限公司 | Colliery is radio wave omnidirectional receiving antenna in pit |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1308782A (en) * | 1998-07-09 | 2001-08-15 | 艾利森电话股份有限公司 | Miniature printed spiral antenna for mobile terminals |
| CN1536709A (en) * | 2003-04-09 | 2004-10-13 | 正文科技股份有限公司 | Dual-frequency inverted-F antenna |
| CN101118985A (en) * | 2007-07-20 | 2008-02-06 | 天津大学 | Low temperature cofired ceramic antenna and very high frequency RF identification tag antenna formed of the same |
| CN201072805Y (en) * | 2007-03-13 | 2008-06-11 | 中兴通讯股份有限公司 | Double-frequency broadband printing antenna |
| CN201163659Y (en) * | 2008-01-25 | 2008-12-10 | 南京理工大学 | Plane inverse F shape antenna with serpentine curve structure |
| CN101355194A (en) * | 2008-09-01 | 2009-01-28 | 北京邮电大学 | Dual range microstrip antenna |
| CN205194853U (en) * | 2015-09-28 | 2016-04-27 | 江苏大学 | Miniaturized microstrip antenna of qxcomm technology of 433MHz |
-
2015
- 2015-09-28 CN CN201510628217.1A patent/CN105161855A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1308782A (en) * | 1998-07-09 | 2001-08-15 | 艾利森电话股份有限公司 | Miniature printed spiral antenna for mobile terminals |
| CN1536709A (en) * | 2003-04-09 | 2004-10-13 | 正文科技股份有限公司 | Dual-frequency inverted-F antenna |
| CN201072805Y (en) * | 2007-03-13 | 2008-06-11 | 中兴通讯股份有限公司 | Double-frequency broadband printing antenna |
| CN101118985A (en) * | 2007-07-20 | 2008-02-06 | 天津大学 | Low temperature cofired ceramic antenna and very high frequency RF identification tag antenna formed of the same |
| CN201163659Y (en) * | 2008-01-25 | 2008-12-10 | 南京理工大学 | Plane inverse F shape antenna with serpentine curve structure |
| CN101355194A (en) * | 2008-09-01 | 2009-01-28 | 北京邮电大学 | Dual range microstrip antenna |
| CN205194853U (en) * | 2015-09-28 | 2016-04-27 | 江苏大学 | Miniaturized microstrip antenna of qxcomm technology of 433MHz |
Non-Patent Citations (1)
| Title |
|---|
| 柳青: "小型化宽带化微带天线", 《中国优秀硕士学位论文全文数据库（信息科技辑）》 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105609925A (en) * | 2016-02-29 | 2016-05-25 | 国网新疆电力公司昌吉供电公司 | Outdoor antenna for medium-voltage switchgear |
| CN105870617A (en) * | 2016-05-06 | 2016-08-17 | 深圳洲斯移动物联网技术有限公司 | Ultra-small 433 MHz built-in FPC antenna |
| WO2019154080A1 (en) * | 2018-02-06 | 2019-08-15 | 中兴通讯股份有限公司 | Antenna device and terminal |
| CN109411900A (en) * | 2018-12-14 | 2019-03-01 | 湖南华诺星空电子技术有限公司 | A kind of broad-band antenna for through-wall radar imaging |
| CN116864958A (en) * | 2023-05-30 | 2023-10-10 | 中煤科工集团武汉设计研究院有限公司 | Colliery is radio wave omnidirectional receiving antenna in pit |
| CN116864958B (en) * | 2023-05-30 | 2024-04-02 | 中煤科工集团武汉设计研究院有限公司 | Colliery is radio wave omnidirectional receiving antenna in pit |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR102455333B1 (en) | Antenna systems and terminal equipment | |
| TWI423520B (en) | Mobile communication device | |
| CN110085971B (en) | Printed circuit board antenna and terminal | |
| CN102017292B (en) | Broadband internal antenna using slow-wave structure | |
| CN107946769B (en) | 4G MIMO mobile phone antenna based on liquid metal | |
| CN105161855A (en) | 433 MHz miniaturization omnidirectional micro-strip antenna and manufacture method | |
| CN101388494B (en) | Multi-antenna integrated module | |
| WO2021136232A1 (en) | Antenna structure and electronic device | |
| CN109301486B (en) | Single-layer patch type microwave millimeter wave cross-frequency-band dual-polarized radiation unit for 5G mobile communication | |
| CN104157969A (en) | Broadband MIMO dual-antenna based on adjusting impedance matching technology | |
| CN107834206B (en) | Antenna and mobile terminal | |
| CN201601223U (en) | Small-sized dual-band omni-directional microstrip antenna | |
| CN203456585U (en) | A wireless communication apparatus, a communication antenna thereof, and a communication antenna assembly | |
| CN205194853U (en) | Miniaturized microstrip antenna of qxcomm technology of 433MHz | |
| CN103985957A (en) | Broadband multi-frequency-band built-in mobile phone antenna | |
| CN106505309A (en) | Present array antenna in a kind of gap loaded microstrip side | |
| WO2016101136A1 (en) | Multiband dielectric resonance mobile phone terminal antenna | |
| CN103515699A (en) | Antenna and method used for forming antenna | |
| TWI497830B (en) | Communication device and method for enhanceing impedance bandwidth of antenna thereof | |
| CN207852905U (en) | A kind of LTE antenna and mobile terminal | |
| CN107658557B (en) | Miniaturized three-dimensional multifrequency microstrip antenna | |
| CN113540763B (en) | Antenna and equipment | |
| CN102760944B (en) | Omnidirectional radiation vibrator array antenna for loaded coupled feeding | |
| CN102142608A (en) | Fractal theory based corner reflector antenna | |
| CN111416199B (en) | Multi-band vehicle-mounted communication 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 | ||
| CB03 | Change of inventor or designer information |
Inventor after: Li Runde Inventor after: Xia Jing Inventor after: Kong Wa Inventor after: Yan Shu Inventor before: Li Runde Inventor before: Yan Shu |
|
| CB03 | Change of inventor or designer information | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20151216 |
|
| RJ01 | Rejection of invention patent application after publication |