CN104681955A - UWB (ultra wide band) antenna with dual resistance band function - Google Patents
UWB (ultra wide band) antenna with dual resistance band function Download PDFInfo
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- CN104681955A CN104681955A CN201310617671.8A CN201310617671A CN104681955A CN 104681955 A CN104681955 A CN 104681955A CN 201310617671 A CN201310617671 A CN 201310617671A CN 104681955 A CN104681955 A CN 104681955A
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Abstract
The invention provides an UWB (ultra wide band) antenna with a dual resistance band function, and relates to an UWB antenna. The UWB antenna comprises a medium substrate (105), a radiating unit (101), an impedance matching input microstrip wire (102), a folding line type EBG (electromagnetic band gap) structure (103), a cross type EBG structure (106) and a metal grounding plate (104), wherein the radiating unit (101), the impedance matching input microstrip wire (102), the folding line type EBG structure (103) and the cross type EBG structure (106) are arranged on the medium substrate, and the metal grounding plate (104) is arranged under the medium substrate. The UWB antenna has the advantages that by utilizing the radiating unit, the impedance matching input microstrip wire and the metal grounding plate, the pass band bandwidth required by the UWB is realized; by arranging the two groups of EBG structures, the dual resistance band property is realized; the two resistance bands are respectively arranged near 5.2GHz and 6.8GHz, and the interference of an UWB system on an RFID (radio frequency identification) system (6.8GHz) and a WLAN (wireless local area network) system (5.15-5.35GHz) is inhibited.
Description
Technical field
The present invention relates to a kind of ultra wide band resistance antenna, especially relate to a kind of ultra-wideband antenna with dual-attenuation function, this antenna can suppress the mutual interference of radio ultra wide band system and RFID, wlan system.
Background technology
In February, 2002, FCC (FCC) ratifies 3.1-10.6GHz frequency range for business telecommunication, and therefore UWB is widely used.
But, the frequency band covered due to ultra-wideband communications is wider, some frequency band and other wireless system band sharing resource, likely mutually disturb with other system, as Wimax system (3.2-3.5GHz), wlan system (5.15-5.35GHz), (5.725-5.825GHz) and rfid system (6.8GHz).How to solve co-channel interference and become UWB research important content, the ultra-wideband antenna therefore with stopband characteristic has very high practical value.
There is the mentality of designing of a lot of ultra wide band resistance antenna in recent years, as in radiation patch, fluting, dielectric-slab back side parasitic metal paster, increase open loop resonant cavity, design work form stopband etc. mutually at the antenna of different frequency bands.But these methods all exist limitation, such as antenna volume is large, is unfavorable for the system integration; The centre frequency of stopband not easily regulates.In the present invention, adopt the EBG structure being subject to extensive concern in recent years, form band-stop response.
Electro-magnetic bandgap (Electromagnetic Band Gap, EBG) structure itself has the superior function of forbidden band characteristic and homophase reflection, be applied to field of antenna, effectively can improve the antenna pattern of antenna, improve gain, reduce secondary lobe and back lobe etc., be applied to array antenna, the effect of intercoupling between antenna can be reduced.(Electromagnetic Band Gap, EBG) structure meets the requirement of Modern wireless communication technology to high performance antenna, thus makes it increasingly extensive in the application of field of microwave communication.
Prohibit characteristic because EBG structure has band, the electromagnetic wave transmission on the transmission line in special frequency channel can be suppressed, thus form stopband; And be easy to integrated with microstrip line, can not additional space be taken; Further, the centre frequency of stopband is easy to regulate.Therefore, EBG structure is applicable to being applied in the design of ultra wide band resistance antenna very much, makes volume little, the ultra broadband stopband antenna that cost is low.
Summary of the invention
The object of the present invention is to provide a kind of ultra-wideband antenna with dual-attenuation function, this antenna can inhibit radio ultra wide band system to the interference of rfid system (6.8GHz), wlan system (5.15-5.35GHz).
The technical solution adopted in the present invention:
The present invention includes medium substrate (105), the radiating element (101) be formed on medium substrate, impedance matching input microstrip line (102), broken line type EBG electromagnetic bandgap structure (103), cross type EBG electromagnetic bandgap structure (106), be formed at the metal ground plate (104) under medium substrate.
Described a kind of ultra-wideband antenna with dual-attenuation function, is characterized in that, the elementary cell of broken line type EBG electromagnetic bandgap structure (103), is the square patch structure that finger-like line (1031) and broken line (1032) are formed; And the width of finger-like line (1031) is equal with the gap between each line, the width of broken line (1032) is equal with the gap between broken line.
Described a kind of ultra-wideband antenna with dual-attenuation function, is characterized in that, the elementary cell of cross type EBG electromagnetic bandgap structure (106), is the square patch structure that finger-like line (1061) and right-angled intersection paster structure (1062) are formed; And the width of finger-like line (1061) is equal with the gap between each line, right-angled intersection paster structure (1062) connects four pads of paster structure.
Described a kind of ultra-wideband antenna with dual-attenuation function, is characterized in that, the elementary cell of broken line type EBG electromagnetic bandgap structure (103) is symmetrically distributed in impedance matching input microstrip line (102) both sides; There are 3 elementary cells every side; The elementary cell of cross type EBG electromagnetic bandgap structure (106) is symmetrically distributed in impedance matching input microstrip line (102) both sides; There are 3 elementary cells every side.
Described a kind of ultra-wideband antenna with dual-attenuation function, is characterized in that, radiating element (101) is circular patch.
Described a kind of ultra-wideband antenna with dual-attenuation function, is characterized in that, medium substrate (105) adopts GML1000 material.
Described a kind of ultra-wideband antenna with dual-attenuation function, is characterized in that, described two stopbands, respectively near 5.2Ghz and 6.8GHz, inhibit radio ultra wide band system to the interference of rfid system (6.8GHz), wlan system (5.15-5.35GHz).
This invention antenna has following characteristic and advantage relative to existing antenna:
Simplicity of design, compact conformation, easy to process, with low cost.
The increase of EBG structure, does not change the good standing-wave ratio in primary antenna passband and directional diagram; And there is the narrow advantage of bandwidth of rejection.
By the width of adjustment belt finger-like line (1031) (1061), stopband center frequency-adjustable can be realized.
Accompanying drawing explanation
Fig. 1 is the basic structure front schematic view of the invention process example 1.
Fig. 2 is the basic structure side schematic view of the invention process example 1.
Fig. 3 is the basic structure schematic rear view of the invention process example 1.
Fig. 4 is the broken line type EBG construction unit lattice structure schematic diagram of the invention process example 1.
Fig. 5 is the cross type EBG construction unit lattice structure schematic diagram of the invention process example 1.
Embodiment
The present invention devises a kind of ultra-wideband antenna with dual-attenuation function, inhibits radio ultra wide band system to the interference of rfid system (6.8GHz), wlan system (5.15-5.35GHz).
Below in conjunction with accompanying drawing distance, invention is described in more detail:
As shown in Figure 1, a kind of ultra-wideband antenna with dual-attenuation function of the present invention, radiating element (101) on medium substrate, impedance matching input microstrip line (102), broken line type EBG electromagnetic bandgap structure (103), cross type EBG electromagnetic bandgap structure (106), adopt copper product.
An example of the present invention as shown in Figure 2, medium substrate (105) to be dielectric constant be 3.2 GML1000 material.The thickness of this medium substrate is 0.762mm.Metal ground plate (104) under medium substrate adopts copper product.
As shown in Figure 3, the metal ground plate (104) under medium substrate has groove structure to an example of the present invention.
As shown in Figure 4, a kind of ultra-wideband antenna with dual-attenuation function of the present invention, the elementary cell of described broken line type EBG electromagnetic bandgap structure (103), is the square patch structure that finger-like line (1031) and broken line (1032) are formed, realizes WLAN frequency range stopband characteristic by it.
As shown in Figure 5, a kind of ultra-wideband antenna with dual-attenuation function of the present invention, the elementary cell of described cross type EBG electromagnetic bandgap structure (106), for the square patch structure that finger-like line (1061) and right-angled intersection paster structure (1062) are formed, realize RFID frequency range stopband characteristic by it.
The design of EBG structure: according to micro-band transmission correlation theory, design meets the electromagnetic bandgap structure in RFID, WLAN frequency range with stopband characteristic.The elementary cell of described broken line type EBG electromagnetic bandgap structure, forms parallel resonance structure; Wherein electric capacity is obtained by finger-like line (1031), and inductance is made up of the broken line (1032) of center to four limits; Resonance frequency and bandwidth are determined by the L of parallel resonance structure, C; WLAN frequency range stopband characteristic is realized by it.The elementary cell of described cross type EBG electromagnetic bandgap structure, forms parallel resonance structure; Wherein electric capacity is obtained by finger-like line (1061), and inductance is made up of the right-angled intersection paster structure (1062) connecting center and four limits; Resonance frequency and bandwidth are determined by the L of parallel resonance structure, C; RFID frequency range stopband characteristic is realized by it.
Claims (7)
1. one kind has the ultra-wideband antenna of dual-attenuation function, it is characterized in that, comprise medium substrate (105), the radiating element (101) be formed on medium substrate, impedance matching input microstrip line (102), broken line type EBG electromagnetic bandgap structure (103), cross type EBG electromagnetic bandgap structure (106), be formed at the metal ground plate (104) under medium substrate.
2. a kind of ultra-wideband antenna with dual-attenuation function according to claim 1, it is characterized in that, the elementary cell of broken line type EBG electromagnetic bandgap structure (103), is the square patch structure that finger-like line (1031) and broken line (1032) are formed; And the width of finger-like line (1031) is equal with the gap between each line, the width of broken line (1032) is equal with the gap between broken line.
3. a kind of ultra-wideband antenna with dual-attenuation function according to claim 1, it is characterized in that, the elementary cell of cross type EBG electromagnetic bandgap structure (106) is the square patch structure that finger-like line (1061) and right-angled intersection paster structure (1062) are formed; And the width of finger-like line (1061) is equal with the gap between each line, right-angled intersection paster structure (1062) connects four pads of paster structure.
4. a kind of ultra-wideband antenna with dual-attenuation function according to claim 1, is characterized in that, the elementary cell of broken line type EBG electromagnetic bandgap structure (103) is symmetrically distributed in impedance matching input microstrip line (102) both sides; There are 3 elementary cells every side; The elementary cell of cross type EBG electromagnetic bandgap structure (106) is symmetrically distributed in impedance matching input microstrip line (102) both sides; There are 3 elementary cells every side.
5. a kind of ultra-wideband antenna with dual-attenuation function according to claim 1, it is characterized in that, radiating element (101) is circular patch.
6. a kind of ultra-wideband antenna with dual-attenuation function according to claim 1, is characterized in that, medium substrate (105) adopts GML1000 material.
7. a kind of ultra-wideband antenna with dual-attenuation function according to claim 1, it is characterized in that, described two stopbands, respectively near 5.2Ghz and 6.8GHz, inhibit radio ultra wide band system to the interference of rfid system (6.8GHz), wlan system (5.15-5.35GHz).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310617671.8A CN104681955A (en) | 2013-11-27 | 2013-11-27 | UWB (ultra wide band) antenna with dual resistance band function |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310617671.8A CN104681955A (en) | 2013-11-27 | 2013-11-27 | UWB (ultra wide band) antenna with dual resistance band function |
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| CN104681955A true CN104681955A (en) | 2015-06-03 |
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| CN201310617671.8A Pending CN104681955A (en) | 2013-11-27 | 2013-11-27 | UWB (ultra wide band) antenna with dual resistance band function |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106816705A (en) * | 2017-01-17 | 2017-06-09 | 厦门大学 | A kind of UWB mimo antennas with double trap structures |
| CN106876929A (en) * | 2015-12-10 | 2017-06-20 | 哈尔滨黑石科技有限公司 | A kind of UWB band resistance antennas based on rice font EBG structures |
| CN106876932A (en) * | 2015-12-10 | 2017-06-20 | 哈尔滨黑石科技有限公司 | A kind of ultra wide band resistance antenna based on EBG structures |
| CN106876934A (en) * | 2015-12-10 | 2017-06-20 | 哈尔滨黑石科技有限公司 | A kind of UWB band resistance antennas based on EBG structures |
| CN106876930A (en) * | 2015-12-10 | 2017-06-20 | 哈尔滨黑石科技有限公司 | A kind of ultra-wideband antenna based on EBG structures |
| CN106876988A (en) * | 2015-12-10 | 2017-06-20 | 哈尔滨黑石科技有限公司 | A kind of precipitous double trap UWB antennas of stopband |
| CN106876933A (en) * | 2015-12-10 | 2017-06-20 | 哈尔滨黑石科技有限公司 | A kind of UWB band resistance antennas based on EBG structures |
| CN112952401A (en) * | 2021-01-18 | 2021-06-11 | 慧博云通科技股份有限公司 | Antenna array based on electromagnetic band gap structure |
| EP4252313A4 (en) * | 2020-11-27 | 2024-10-23 | Rfs Tech Inc | Decoupling apparatus, radiation unit and antenna |
-
2013
- 2013-11-27 CN CN201310617671.8A patent/CN104681955A/en active Pending
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106876929A (en) * | 2015-12-10 | 2017-06-20 | 哈尔滨黑石科技有限公司 | A kind of UWB band resistance antennas based on rice font EBG structures |
| CN106876932A (en) * | 2015-12-10 | 2017-06-20 | 哈尔滨黑石科技有限公司 | A kind of ultra wide band resistance antenna based on EBG structures |
| CN106876934A (en) * | 2015-12-10 | 2017-06-20 | 哈尔滨黑石科技有限公司 | A kind of UWB band resistance antennas based on EBG structures |
| CN106876930A (en) * | 2015-12-10 | 2017-06-20 | 哈尔滨黑石科技有限公司 | A kind of ultra-wideband antenna based on EBG structures |
| CN106876988A (en) * | 2015-12-10 | 2017-06-20 | 哈尔滨黑石科技有限公司 | A kind of precipitous double trap UWB antennas of stopband |
| CN106876933A (en) * | 2015-12-10 | 2017-06-20 | 哈尔滨黑石科技有限公司 | A kind of UWB band resistance antennas based on EBG structures |
| CN106816705A (en) * | 2017-01-17 | 2017-06-09 | 厦门大学 | A kind of UWB mimo antennas with double trap structures |
| CN106816705B (en) * | 2017-01-17 | 2019-04-02 | 厦门大学 | A kind of UWB-MIMO antenna with double trap structures |
| EP4252313A4 (en) * | 2020-11-27 | 2024-10-23 | Rfs Tech Inc | Decoupling apparatus, radiation unit and antenna |
| CN112952401A (en) * | 2021-01-18 | 2021-06-11 | 慧博云通科技股份有限公司 | Antenna array based on electromagnetic band gap structure |
| CN112952401B (en) * | 2021-01-18 | 2022-11-11 | 慧博云通科技股份有限公司 | Antenna array based on electromagnetic band gap structure |
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150603 |