CN201167134Y - Ultra-wideband printed antennae with double-stopband function - Google Patents
Ultra-wideband printed antennae with double-stopband function Download PDFInfo
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- CN201167134Y CN201167134Y CNU2008200329697U CN200820032969U CN201167134Y CN 201167134 Y CN201167134 Y CN 201167134Y CN U2008200329697 U CNU2008200329697 U CN U2008200329697U CN 200820032969 U CN200820032969 U CN 200820032969U CN 201167134 Y CN201167134 Y CN 201167134Y
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Abstract
An ultra-wideband printed antenna with the function of dual-stopband is used in the technical field of wireless communication. The antenna includes a dielectric plate (1) and metal printed antennae arranged on the two surfaces of the dielectric plate, wherein a microstrip feed port (2), a microstrip feed line (3), dissymmetrical radii (4) and a microstrip radiating element (5) are arranged on the front surface of the dielectric plate (1); the microstrip feed line (3) is arranged on the axle wire of the dielectric plate (1); the upper part of the microstrip feed line (3) is connected with the microstrip radiating element (5); the lower part of the microstrip feed line (3) is the microstrip feed port (2); the dissymmetrical radii (4) are arranged on the two sides of the middle part of the microstrip feed line (3); a grounding unit (6) is arranged at the lower part of the back surface of the dielectric plate (1). The simplest and mature PCB processing technique is adopted, the stopband function is added under the condition of keeping the volume of the original antenna unchanged, and the area of the whole antenna is only about 3*3cm<2>, thereby facilitating integration. The results of simulation and observation show that the antenna has strong practicability.
Description
Technical field
The utility model relates to a kind of short-distance wireless communication that can be applicable to, the ultra-wideband antenna technology of transfer of data, and such antenna can solve the problem that wide-band communication system is disturbed by other existing narrow-band communication system signal effectively.
Background technology
In recent years, ultra broadband (UWB) short-distance wireless communication had caused that the global communication technical field greatly paid attention to.Ultra-wideband Communication Technology is strong with its transmission rate height, anti-multipath interference performance, high security, help advantage such as multifunctional all and become short-distance wireless communication and have one of technology of competitiveness and development prospect.After in February, 2002, FCC used the no licence of issue to use to ultra broadband, super-broadband tech became a focus of international wireless communications field research and development rapidly, and is regarded as one of key technology of next generation wireless communication.IEEE 802.15.3a standard distributes 3.1～10.6 frequency ranges to use to ultra-wideband communication system, and corresponding therewith ultra-wideband antenna also becomes one of focus of research.The size of early stage ultra-wideband antenna such as ridge waveguide horn antenna, logarithm periodic antenna etc. is often very big, can not satisfy the requirement of radio ultra wide band system miniaturization.The printed antenna technology that grows up recent years can be dwindled the size of ultra-wideband antenna widely, and it is low to have a cost, is easy to advantages such as design and processing, has therefore obtained people's common concern.
Be subjected to the interference of frequency band in other narrow-band communication systems in order to prevent radio ultra wide band system recent years, and how the research steering of ultra-wideband antenna makes antenna have the stopband function, thereby saves the filter of antenna next stage, simplifies the system configuration of ultra broadband.Nowadays method relatively commonly used has: on the radiating element of antenna, slots, and as U-shaped, V-arrangement and L shaped etc.; Feed element at antenna loads circular or square resonant element; Design work forms stopband mutually at the antenna of different frequency bands.But all there is limitation in these methods, and are bigger such as antenna volume, are unfavorable for the system integration; The stopband center frequency is difficult for regulating; A lot of antennas only have a stopband etc.
Asymmetric thorn-like line (Asymmetrical spurlines) can be used for the good band stop filter of design performance, and be easy to microstrip line integrated, can not take additional space, the centre frequency of stopband is highly susceptible to regulating, therefore be fit to very much be applied in the middle of the design of ultra-wideband antenna, thereby it is little to produce volume, and cost is low, has the ultra-wideband antenna that dual-attenuation and stopband center frequency are easy to regulate.
Summary of the invention
Technical problem: the utility model proposes a kind of ultra-wideband printed antenna with dual-attenuation function, it makes antenna produce two stopbands by etch a pair of asymmetrical thorn-like line on microstrip feed line, it is low that this antenna has a cost, volume is little, be easy to advantages such as processing and performance are good, can be applied among the radio ultra wide band system transceiver.
Technical scheme: the ultra-wideband printed antenna with dual-attenuation function that the utility model proposes comprises dielectric-slab and is positioned at the operplate printing antenna of dielectric-slab upper and lower surface; Wherein be provided with microstrip-fed port, microstrip feed line, asymmetric thorn-like line, little band radiating element in the front of dielectric-slab, microstrip feed line is positioned on the axis of dielectric-slab, be connected with little band radiating element on the top of microstrip feed line, in the bottom of microstrip feed line is microstrip-fed port, is provided with asymmetric thorn-like line in the both sides at the middle part of microstrip feed line; Bottom at the dielectric-slab back side is provided with ground unit.Asymmetric thorn-like line constitutes by etch pair of L type groove on microstrip feed line, and the length difference of two thorn-like lines.Ground unit is semicircular distortion, and semi-circular top upwards has a breach in the centre.Little band radiating element is the distortion of semicircular ring, and opening upwards.
This ultra-wideband antenna comprises the metal level of printed circuit board (PCB) (pcb board) and lower surface fixed thereon.The metal level that is positioned at the pcb board upper surface comprises radiating element and microstrip feed line two parts, wherein etches a pair of asymmetric thorn-like line on the microstrip feed line.Attached to constituting on the microstrip feed line, this structure that is similar to semi-round ring shape can increase the bandwidth of operation of antenna to radiating element effectively by two quadrant rings.The asymmetric thorn-like line that etches on the microstrip feed line is the fluting of L type, and both width are identical, but the length difference, its length has directly determined the centre frequency of stopband, this kind structure can produce two stopbands.The length of microstrip feed line should be convenient to both combinations greater than the length of asymmetric thorn-like line, and this kind structure makes that when not increasing antenna volume antenna has had the function of dual-attenuation.
The metal level that is positioned at the pcb board below is a ground level, constitute microwave circuit with microstrip feed line, guide electromagnetic waves is propagated toward radiating element, this moment, near the electromagnetic wave the stopband center frequency was subjected to the filter action of asymmetric thorn-like line, effect spread can not be arranged, the energy major part is reflected, and can't blaze abroad by radiating element, thereby form stopband.The basic configuration of ground level is that two quadrants add some rectangular elements, the bandwidth of operation of radiating element combination can increasing the greatly antenna of the ground level of this structure and semicircular ring, the target of realization ultra broadband work.In order to maximally utilise the limited size of antenna, expand its bandwidth, increased breach at the top of ground level, this measure can make the bandwidth of operation of antenna further enlarge.
Pcb board adopts low-cost, and the dielectric-slab of low-k is as FR4 etc.
Beneficial effect: adopt simple and the most ripe PCB processing technology, increased the stopband function under the situation of the constancy of volume that keeps primary antenna, the area of entire antenna has only 3 * 3cm
2About, be easy to integrated.Emulation and results measured show that antenna has very strong practicality.
Description of drawings
Below in conjunction with accompanying drawing, the utility model is made detailed description:
Fig. 1 is antenna whole structure figure.Wherein solid line is depicted as Facad structure, and dotted line is depicted as structure.
Fig. 2 is an antenna VSWR test result.
Fig. 3 is Antenna Pattern Measuring Test result (a) 3GHz, (b) 7GHz, (c) 9.5GHz.
Fig. 4 is the antenna gain test result.
Among the figure, dielectric-slab 1, microstrip-fed port 2, microstrip feed line 3, asymmetric thorn-like line 4, little band radiating element 5, ground unit 6, breach 7.
Embodiment
Referring to Fig. 1, represent the structural representation of existing ultra-wideband antenna, solid line is depicted as Facad structure, and dotted line is depicted as structure.Antenna is a monopole antenna, and wherein dielectric-slab 1 adopts FR4 sheet material, and dielectric constant is 4.4, and this kind board cost is very cheap, can greatly reduce the cost of antenna, and the thickness of sheet material is 0.8mm.Microstrip-fed port 2 is the input port of energy, joins with the sub-miniature A connector of 50 Ω characteristic impedances, and the width of microstrip feed line needs appropriate design, makes the characteristic impedance of feeder line end and sub-miniature A connector be complementary.Asymmetric thorn-like line 4 forms by etching on microstrip line, and the width of its fluting has influenced the width of stopband, and in general, groove is wide more, and resistance band is big more; The length of thorn-like line has determined the position of stopband, and length is long more, and the stopband center frequency is low more.The combination of radiating element 5 and ground level 6 makes antenna have the characteristics of ultra broadband work, and the breach 7 on the Horizon 6 can further increase the bandwidth of operation of antenna.
Referring to Fig. 2, be the test result of antenna VSWR.As we can see from the figure, this antenna has two stopbands in the bandwidth of operation (VSWR＜2) of 2.15～12GHz, be respectively 3.5～4.1GHz and 5.0～6.3GHz (VSWR＞2), and the centre frequency of stopband is respectively 3.85GHz and 5.5GHz.
Referring to Fig. 3, be the actual measurement directional diagram of antenna, chosen three frequency 3GHz, 7GHz, 9.5GHz, E face directional diagram is the apple shape basically, and the H face is circular substantially, and antenna operating state in whole working band is more stable as can be seen.
Referring to Fig. 4, be the antenna gain of actual measurement, as can be seen, antenna gains very low in stopband, has realized the purpose of other band interference of filtering.
In sum, according to the utility model, can keep the stable of systematic function, filtering simultaneously is from the interference signal in other frequency bands, and the volume of system does not increase.
Claims (4)
1. ultra-wideband printed antenna with dual-attenuation function is characterized in that this antenna comprises dielectric-slab (1) and is positioned at the operplate printing antenna on dielectric-slab (1) two sides; Wherein be provided with microstrip-fed port (2), microstrip feed line (3), asymmetric thorn-like line (4), little band radiating element (5) in the front of dielectric-slab (1), microstrip feed line (3) is positioned on the axis of dielectric-slab (1), be connected with little band radiating element (5) on the top of microstrip feed line (3), in the bottom of microstrip feed line (3) is microstrip-fed port (2), is provided with asymmetric thorn-like line (4) in the both sides at the middle part of microstrip feed line (3); Bottom at dielectric-slab (1) back side is provided with ground unit (6).
2. the ultra-wideband printed antenna with dual-attenuation function according to claim 1 is characterized in that: asymmetric thorn-like line (4) constitutes by etch pair of L type groove on microstrip feed line (3), and the length difference of two thorn-like lines.
3. the ultra-wideband printed antenna with dual-attenuation function according to claim 1 is characterized in that: ground unit (6) is semicircular distortion, and semi-circular top upwards has a breach (7) in the centre.
4. the ultra-wideband printed antenna with dual-attenuation function according to claim 1 is characterized in that: little band radiating element (5) is the distortion of semicircular ring, and opening upwards.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200329697U CN201167134Y (en) | 2008-03-14 | 2008-03-14 | Ultra-wideband printed antennae with double-stopband function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200329697U CN201167134Y (en) | 2008-03-14 | 2008-03-14 | Ultra-wideband printed antennae with double-stopband function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201167134Y true CN201167134Y (en) | 2008-12-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200329697U Expired - Fee Related CN201167134Y (en) | 2008-03-14 | 2008-03-14 | Ultra-wideband printed antennae with double-stopband function |
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| Country | Link |
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| CN (1) | CN201167134Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101242028B (en) * | 2008-03-14 | 2011-06-22 | 东南大学 | Dual resistance belt ultra-broadband antenna based on non-symmetric stick line |
| CN103794875A (en) * | 2014-01-18 | 2014-05-14 | 中国计量学院 | Symmetrical semicircle opening-groove-shaped double-frequency coplane microstrip patch antenna |
| CN109149098A (en) * | 2018-10-10 | 2019-01-04 | 江苏中科智睿物联网科技有限公司 | A kind of pole wide-band printing unipole antenna |
-
2008
- 2008-03-14 CN CNU2008200329697U patent/CN201167134Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101242028B (en) * | 2008-03-14 | 2011-06-22 | 东南大学 | Dual resistance belt ultra-broadband antenna based on non-symmetric stick line |
| CN103794875A (en) * | 2014-01-18 | 2014-05-14 | 中国计量学院 | Symmetrical semicircle opening-groove-shaped double-frequency coplane microstrip patch antenna |
| CN109149098A (en) * | 2018-10-10 | 2019-01-04 | 江苏中科智睿物联网科技有限公司 | A kind of pole wide-band printing unipole antenna |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20081217 Termination date: 20110314 |