CN109935968A - Double-loop double-frequency antenna - Google Patents
Double-loop double-frequency antenna Download PDFInfo
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- CN109935968A CN109935968A CN201910315401.9A CN201910315401A CN109935968A CN 109935968 A CN109935968 A CN 109935968A CN 201910315401 A CN201910315401 A CN 201910315401A CN 109935968 A CN109935968 A CN 109935968A
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- bicyclic
- circle
- dual
- microstrip
- dielectric
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- 239000002184 metal Substances 0.000 claims abstract 7
- 125000002619 bicyclic group Chemical group 0.000 claims description 24
- 239000000758 substrate Substances 0.000 abstract description 21
- 230000005855 radiation Effects 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 238000010923 batch production Methods 0.000 abstract description 2
- 230000009977 dual effect Effects 0.000 description 11
- 238000004891 communication Methods 0.000 description 9
- 238000000034 method Methods 0.000 description 9
- 230000005540 biological transmission Effects 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 230000005404 monopole Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
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Abstract
The invention discloses a double-ring double-frequency antenna, which structurally comprises a dielectric plate, a double-ring patch, a microstrip feed and a metal grounding sheet, wherein the dielectric plate is provided with a dielectric layer; the double-ring patch is formed by splicing a large ring and a small ring which are arranged on the front surface of the dielectric plate, the microstrip feed is a rectangle arranged on the front surface of the dielectric substrate, and the bottom of the double-ring patch is connected with the top of the microstrip feed; the metal grounding sheet is rectangular and is arranged on the back surface of the dielectric substrate. The dual-band antenna has the advantages of dual-band, good radiation characteristic, simple structure, small volume, easy processing and manufacturing, convenient batch production and the like.
Description
Technical field
The present invention relates to field of antenna, in particular to dual-band antenna, are mainly used for double frequency wireless communication system.
Background technique
With the fast development of wireless communication technique and the increase of the market demand, Modern wireless communication is required whenever and wherever possible
Wireless access and large capacity, high-speed data transmission.In order to adapt to the high speed development of wireless communication technique, it is born in succession
Various communications protocols, such as WLAN technologies (Wireless local area networks, WLAN) and the whole world
Inserting of microwave interoperates (Worldwide interoperability for microwave access, WiMAX).WLAN quilt
Be widely used in various wireless communication systems, it be based on IEEE 802.11a standard (5.15~5.35GHz, 5.725~
5.875GHz) and the computer local area of IEEE802.11b/g standard (2.4~2.484GHz) using wireless channel as transmission medium
Net realizes the transmission of air-data, voice and video signal.And WiMAX is to be based on 802.16 standard of IEEE (2~66GHz),
Operate mainly in 2.5GHz frequency range (2.50~2.69GHz), 3.5GHz frequency range (3.40~3.69GHz) and 5.5GHz frequency range
(5.25~5.85GHz) is the air-interface standard new for one kind of microwave and millimeter wave frequency band, can provide Internet
High speed connection.
In recent years, requirement of the wireless communication system to antenna is higher and higher, and with thin profile, small in size, quality is small, easy collection
At [the advantages that microstrip antenna obtained it is extensive research and application.Meanwhile it being often required that in modern wireless communication systems a variety of
Working frequency range coexists, and the wireless communication system for working in double frequency or multiband is the important directions developed at present, therefore,
It is also critically important to the research of double-frequency micro-strip antenna.Realize that double frequency usually has following several method: (1) additional stray patch；(2) add
Carry gap；(3) lamped element etc. is loaded.A kind of last method increases the reactive of circuit, additional stray patch and load lump
The method of element makes the structure of circuit become complicated.The method in load gap does not change the physical structure of original antenna, keeps
The simplicity of antenna structure, is widely used.
Summary of the invention
Small, planarization that the object of the present invention is to provide a kind of sizes, structure are simple, at low cost, logical suitable for double-frequency wireless
The bicyclic dual-band antenna of letter system.
Structure of the invention is such that
A kind of bicyclic dual-band antenna, including medium substrate, dual ring radiating element, microstrip-fed unit, ground unit；It is bicyclic
Radiating element and microstrip-fed unit are located at the front of medium substrate, the top of the bottom of dual ring radiating element and microstrip-fed unit
Portion is connected, so that dual ring radiating element and microstrip-fed unit are merged into the conductive unit of an entirety；Ground unit, which is located at, to be situated between
The lower backside of matter substrate.
Dual ring radiating element is spliced by one big ring and a small ring；Big ring is to cut away great circle 1 by a great circle 1
Made of intersection with great circle 2；Small ring is made of cutting away the intersection of roundlet 1 and roundlet 2 as a roundlet 1；Greatly
The center of circle of circle 1 and the center of circle of great circle 2 do not coincide；The center of circle of roundlet 1 and the center of circle of roundlet 2 do not coincide；Great circle 1, great circle 2,
The center of circle of roundlet 1 and roundlet 2 is in same vertical line
Microstrip-fed unit is rectangle；The bottom edge of microstrip-fed unit and medium substrate coincides, and microstrip-fed list
Member is located at the centre on medium substrate bottom edge.
The characteristic impedance of microstrip-fed unit is 50 ohm.
Ground unit is rectangle, the two sides and bottom edge of ground unit respectively with the two sides of medium substrate and bottom edge edge
It coincides, i.e. the ground unit entire lower surface that is located at medium substrate.
The top edge of ground unit be located at medium substrate upper surface dual ring radiating element lower edge in medium base
The projection of back is at a distance of 0.62-0.9mm.
The beneficial effects of the present invention are:
1. the antenna structure is simple, using monopole dual ring radiating element, the size of antenna is efficiently reduced.
2. the antenna realizes the dual frequency characteristics of antenna using monopole dual ring radiating element, which has double frequency-band,
The advantages that radiation characteristic is good, and structure is simple, small in size, production easy to process, is convenient for batch production.
Detailed description of the invention
Fig. 1 is the overlooking structure diagram of the bicyclic dual-band antenna of the present invention；
Fig. 2 is the side structure schematic view of the bicyclic dual-band antenna of the present invention；
Fig. 3 is the artificial reflections coefficient S 11 of the bicyclic dual-band antenna of the present invention；
Fig. 4 is antenna pattern of the bicyclic dual-band antenna of the present invention at 2.45GHz and 5.5GHz.
Specific embodiment
One embodiment of technical solution of the present invention is further described with reference to the accompanying drawing:
What is provided in Fig. 1~2 is the embodiment of the present invention: a kind of bicyclic dual-band antenna, it is characterised in that: including medium base
Plate (1) is overlying on the positive dual ring radiating element (2) and microstrip-fed unit being made of conducting medium copper of medium substrate (1)
(3) and it is overlying on the ground unit (4) being made of conducting medium copper at medium substrate (1) back side.Dual ring radiating element (2) by
One big ring (2-1) and one small ring (2-2) are spliced；Big ring (2-1) is to cut away 1 (2- of great circle by a great circle 1 (2-3)
3) and made of the intersection of great circle 2 (2-4)；Small ring (2-2) be cut away by a roundlet 1 (2-5) roundlet 1 (2-5) with it is small
Made of the intersection of 2 (2-6) of circle；The center of circle of great circle 1 (2-3) and the center of circle of great circle 2 (2-4) do not coincide；1 (2- of roundlet
5) the center of circle and the center of circle of roundlet 2 (2-6) do not coincide；Great circle 1 (2-3), great circle 2 (2-4), roundlet 1 (2-5) and 2 (2- of roundlet
6) the center of circle is in same vertical line.The microstrip-fed unit (3) is rectangle；Microstrip-fed unit (3) and medium substrate
(1) bottom edge coincides, and microstrip-fed unit (3) is located at the centre on medium substrate (1) bottom edge；Microstrip-fed unit (3)
Characteristic impedance be 50 ohm.Ground unit (4) be rectangle, the two sides and bottom edge of ground unit (4) respectively with medium substrate
(1) two sides and bottom edge edge coincide；The top edge of ground unit (4) and pair for being located at medium substrate (1) upper surface
The lower edge of ring radiating element (2) medium substrate (1) back side projection at a distance of 0.62-0.9mm.
The FR4 medium substrate that bicyclic dual-band antenna of the invention is 4.4 using dielectric constant, the length of medium substrate
It is respectively 30mm and 24mm with width, with a thickness of 1.6mm.Two rings of dual ring radiating element be by four circle develop come,
The radius of two of them great circle is respectively 11mm and 10.3mm, and the radius of two roundlets is respectively 7.5mm and 6.5mm；It is two big
The distance at round circle center distance medium substrate bottom edge edge is respectively 16.5mm and 16.2mm, the circle center distance medium of two roundlets
The distance at substrate bottom edge edge is respectively 13mm and 12.8mm.Microstrip-fed unit is rectangle, and length and width is respectively
7.62mm and 3.2mm；Ground unit is also rectangle, and length and width is respectively 7mm and 24mm.
Attached drawing 3 is compareed, Fig. 3 gives the reflection coefficient S11 of bicyclic dual-band antenna.According to fig. 2 as it can be seen that antenna is there are two work
Working frequency range (S11 < -10dB), respectively 2.387~2.498GHz and 3.57~5.95GHz cover WLAN frequency range (2.4
~2.484GHz, 5.15~5.35GHz, 5.725~5.875GHz) and WiMAX frequency range (5.25~5.85GHz).
Attached drawing 4 is compareed, Fig. 4 gives antenna pattern of the antenna at 2.45GHz and 5.5GHz, can from figure
Out, on the two frequency points, the antenna pattern of antenna all has the radiation characteristic of omnidirectional.
Bicyclic dual-band antenna of the invention can work to work in 2.387~2.498GHz and 3.57~5.95GHz two
Frequency range, this working frequency range can cover WLAN frequency range (2.4~2.484GHz, 5.15~5.35GHz, 5.725~
5.875GHz) and WiMAX frequency range (5.25~5.85GHz), and bicyclic dual-band antenna all has omnidirectional in its working frequency range
Radiation characteristic.And simple, small in size, the easy to process production of the structure of antenna, therefore before the present invention has a wide range of applications
Scape.
The above examples only illustrate the technical idea of the present invention, and this does not limit the scope of protection of the present invention, all
According to the technical idea provided by the invention, any changes made on the basis of the technical scheme each falls within protection model of the invention
Within enclosing.
Claims (5)
1. a kind of bicyclic dual-band antenna, it is characterised in that: including dielectric-slab (1), bicyclic patch (2), microstrip-fed (3), metal
Ground strip (4)；
Bicyclic patch (2) and microstrip-fed (3) are located at the front of dielectric-slab (1), the bottom of bicyclic patch (2) with it is microstrip-fed
(3) top is connected, so that bicyclic patch (2) and microstrip-fed (3) are merged into the conductive unit of an entirety；Metal earthing sheet
(4) it is located at the lower backside of dielectric-slab (1).
2. bicyclic dual-band antenna as described in claim 1, it is characterised in that: the bicyclic patch (2) is by a big ring
(2-1) and one small ring (2-2) are spliced；Big ring (2-1) is cut made of great circle 2 (2-4) as a great circle 1 (2-3)；
Small ring (2-2) is cut made of roundlet 2 (2-6) as a roundlet 1 (2-5)；The center of circle of great circle 1 (2-3) and great circle 2 (2-4)
The center of circle do not coincide；The center of circle of roundlet 1 (2-5) and the center of circle of roundlet 2 (2-6) do not coincide；Great circle 1 (2-3), 2 (2- of great circle
4), the center of circle of roundlet 1 (2-5) and roundlet 2 (2-6) are in same vertical line.
3. bicyclic dual-band antenna as described in claim 1, it is characterised in that: described microstrip-fed (3) are rectangle；Micro-strip feedback
Electric (3) and the bottom edge of dielectric-slab (1) coincide, and microstrip-fed (3) are located at the centre on dielectric-slab (1) bottom edge；It is microstrip-fed
(3) characteristic impedance is 50 ohm.
4. bicyclic dual-band antenna as claimed in claim 2, it is characterised in that: the metal earthing sheet (4) is rectangle, metal
The two sides and bottom edge of ground strip (4) coincide with the two sides of dielectric-slab (1) and bottom edge edge respectively.
5. bicyclic dual-band antenna as claimed in claim 5, it is characterised in that: the top edge of metal earthing sheet (4) be located at
The lower edge of the positive bicyclic patch (2) of dielectric-slab (1) dielectric-slab (1) back side projection at a distance of 0.62-0.9mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910315401.9A CN109935968A (en) | 2019-04-18 | 2019-04-18 | Double-loop double-frequency antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910315401.9A CN109935968A (en) | 2019-04-18 | 2019-04-18 | Double-loop double-frequency antenna |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109935968A true CN109935968A (en) | 2019-06-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910315401.9A Pending CN109935968A (en) | 2019-04-18 | 2019-04-18 | Double-loop double-frequency antenna |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112436274A (en) * | 2020-10-26 | 2021-03-02 | 中国电子科技集团公司第十三研究所 | Coplanar waveguide multi-band microstrip antenna |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102509868A (en) * | 2011-11-18 | 2012-06-20 | 电子科技大学 | Design method for improved ellipse patch ultra-wideband antenna based on micro strip feed |
| CN202585733U (en) * | 2012-05-31 | 2012-12-05 | 中国计量学院 | Dual-frequency microstrip antenna based on circular ring shape |
| CN205069864U (en) * | 2015-10-27 | 2016-03-02 | 南开大学 | Three frequency microstrip antenna based on defect ground structure frame is irregular oval cyclic annular |
| CN205122771U (en) * | 2015-11-30 | 2016-03-30 | 成都信息工程大学 | Microstrip antenna |
| CN105977636A (en) * | 2016-05-16 | 2016-09-28 | 西北工业大学 | Three-frequency coplanar waveguide feed antenna applied to WLAN/WIMAX |
| CN209747727U (en) * | 2019-04-18 | 2019-12-06 | 南京工业大学 | Double-loop double-frequency antenna |
-
2019
- 2019-04-18 CN CN201910315401.9A patent/CN109935968A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102509868A (en) * | 2011-11-18 | 2012-06-20 | 电子科技大学 | Design method for improved ellipse patch ultra-wideband antenna based on micro strip feed |
| CN202585733U (en) * | 2012-05-31 | 2012-12-05 | 中国计量学院 | Dual-frequency microstrip antenna based on circular ring shape |
| CN205069864U (en) * | 2015-10-27 | 2016-03-02 | 南开大学 | Three frequency microstrip antenna based on defect ground structure frame is irregular oval cyclic annular |
| CN205122771U (en) * | 2015-11-30 | 2016-03-30 | 成都信息工程大学 | Microstrip antenna |
| CN105977636A (en) * | 2016-05-16 | 2016-09-28 | 西北工业大学 | Three-frequency coplanar waveguide feed antenna applied to WLAN/WIMAX |
| CN209747727U (en) * | 2019-04-18 | 2019-12-06 | 南京工业大学 | Double-loop double-frequency antenna |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112436274A (en) * | 2020-10-26 | 2021-03-02 | 中国电子科技集团公司第十三研究所 | Coplanar waveguide multi-band microstrip antenna |
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