CN103700937A - Ultra-wideband omnidirectional radiation printed antenna with band elimination characteristic - Google Patents
Ultra-wideband omnidirectional radiation printed antenna with band elimination characteristic Download PDFInfo
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- CN103700937A CN103700937A CN201410010197.7A CN201410010197A CN103700937A CN 103700937 A CN103700937 A CN 103700937A CN 201410010197 A CN201410010197 A CN 201410010197A CN 103700937 A CN103700937 A CN 103700937A
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Abstract
The invention relates to an ultra-wideband omnidirectional radiation printed antenna, in particular to an ultra-wideband omnidirectional radiation printed antenna with a band elimination characteristic, which aims to solve the problems that the existing ultra-wideband antenna can only avoid the influence on a wireless local area by being externally connected with a band elimination filter, and is larger in size. The ultra-wideband omnidirectional radiation printed antenna comprises a first metal floor, a second metal floor, a radiating unit, a metal microstrip line and a medium plate, wherein the metal microstrip line is vertically printed at the lower part of the front surface of the medium plate, the lower end of the metal microstrip line is contacted with the bottom edge of the front surface of the medium plate, the radiating unit is in a semi-circle shape, and is printed at the lower part of the front surface of the medium plate, the first metal floor and the second metal floor are symmetrically printed on the front surface of the medium plate by taking the metal microstrip line as a center line, the lower part of the first metal floor is provided with a first n-shaped gap, and the lower part of the second metal floor is provided with a second n-shaped gap. The ultra-wideband omnidirectional radiation printed antenna is applied to the field of wireless communication.
Description
Technical field
The present invention relates to a kind of printed antenna of ultra wideband omni-directional radiation, be specifically related to a kind of ultra wideband omni-directional radiation printed antenna with band resistance characteristic, belong to radio communication field.
Background technology
In 2002, the spectral range that Federal Communications Committee (FCC) has ratified the ultra-wideband communications of commercial use was first 3.1GHz～10.6GHz.The Antenna Design of radio ultra wide band system becomes a very popular direction.It is short-range lower without postponing high rate communication and other application and power consumption that ultra-wideband antenna can provide.Ultra-wideband antenna has plurality of advantages, for example simple in structure, high data rate, cost low and be easy to processing.Traditional ultra-wideband antenna is a circular monopole antenna and a stereochemical structure that perpendicular metal floor forms, and this class ultra-wideband antenna is because its three-dimensional structure and general size are difficult to radio ultra wide band system more greatly integrated.Therefore, the ultra-wideband printed antenna of plane is suggested, and this class antenna, because its planar structure is easy to microwave circuit integratedly, and can be realized miniaturization by optimizing antenna pattern.Simultaneously, because the spectral range of ultra-wideband communications has covered the spectral range (5.15GHz～5.815GHz) of WLAN (wireless local area network), therefore ultra-wideband communications can cause interference to WLAN (wireless local area network), for fear of this interference, ultra-wideband communication system usually needs to add band stop filter again, this makes the more complicated of ultra-wideband communication system change, and the stability of a system also can reduce.
Summary of the invention
The present invention needs external band stop filter just can avoid the interference to WLAN (wireless local area network) for solving existing ultra-wideband antenna, and the larger problem of antenna volume, and then proposes to have the ultra wideband omni-directional radiation printed antenna of band resistance characteristic.
The present invention addresses the above problem the technical scheme of taking to be: the present invention includes the first metal floor, the second metal floor, radiating element, metal micro-strip line and dielectric-slab, metal micro-strip line is vertically printed on the positive basifacial of dielectric-slab, and the lower end of metal micro-strip line contacts with the base in dielectric-slab front, radiating element is semicircle, radiating element is printed on the bottom in dielectric-slab front, and the straight flange of radiating element is connected with the upper end of metal micro-strip line, the first metal floor and the second metal floor line symmetry centered by metal micro-strip line is printed on the front of dielectric-slab, the bottom of the first metal floor is provided with first font gap, the bottom of the second metal floor is provided with second font gap.
The invention has the beneficial effects as follows: the ultra wideband omni-directional radiation printed antenna with band resistance characteristic of the present invention is planar structure, than traditional three-dimensional ultra-wideband antenna, more easily and ultra-wideband communication system integrated; Antenna of the present invention is by plucking out first gap, font gap on ground and the wide 5.05GHz～5.84GHz of band stopband has been realized in second font gap, the effectively impact of shielding on WLAN (wireless local area network); Antenna of the present invention, by the structure of circular arc and rectigradation, has effectively increased ground board size, makes the more traditional ultra-wideband printed antenna size of this antenna little by 70%～75%, has realized miniaturization.
Accompanying drawing explanation
Fig. 1 is front view of the present invention, Fig. 2 is that antenna is at the standing-wave ratio figure of 2GHz～12GHz, wherein Voltage Standing Wave Ratio represents standing-wave ratio, Fig. 3 is that antenna is in 3GHz～12GHz gain change graph, wherein Gain represents gain, theta represents Vertical Square parallactic angle, phi represents horizontal azimuth, Value represents amplitude, Frequency represents frequency, Fig. 4 is that antenna is at 3.3GHz E face directional diagram, wherein Gain Abs represents antenna gain amplitude, farfield represents far field, Main lobe magnitude represents the directivity value of main lobe, Main lobe direction represents main lobe direction width, Angular width represents 3dB beam angle, phi/Degree vs.dB represents horizontal azimuth (using dB value representation), Fig. 5 is that antenna is at 5.5GHz E face directional diagram, Fig. 6 is that antenna is at 10.6GHz E face directional diagram, wherein Side lobe level represents secondary lobe drop-out value, Fig. 7 is that antenna is at 3.3GHz H face directional diagram, Fig. 8 is that antenna is at 5.5GHz H face directional diagram, Fig. 9 is that antenna is at 10.6GHz E face directional diagram.
Embodiment
Embodiment one: present embodiment is described in conjunction with Fig. 1, the ultra wideband omni-directional radiation printed antenna described in present embodiment with band resistance characteristic comprises the first metal floor 1, the second metal floor 2, radiating element 3, metal micro-strip line 4 and dielectric-slab 7, metal micro-strip line 4 is vertically printed on the positive basifacial of dielectric-slab 7, and the lower end of metal micro-strip line 4 contacts with the base in dielectric-slab 7 fronts, radiating element 3 is semicircle, radiating element 3 is printed on the bottom in dielectric-slab 7 fronts, and the straight flange of radiating element 3 is connected with the upper end of metal micro-strip line 4, the first metal floor 1 and the second metal floor 2 line symmetry centered by metal micro-strip line 4 are printed on the front of dielectric-slab 7, the bottom of the first metal floor 1 is provided with first font gap 5, the bottom of the second metal floor 2 is provided with second font gap 6.
Present embodiment intermediary scutum 7 is that fire resistance rating is the polytetrafluoroethylene making of FR-4.
In present embodiment, the first metal floor 1, the second metal floor 2, metal micro-strip line 4 form coplanar wave guide feedback structure, and this feed structure has wider impedance bandwidth and less reflection loss than traditional feed microstrip line.Floor adopts the structure of straight line and arc transition simultaneously, makes full use of radiating element 3 surrounding spaces and increases floor area, reaches the object that realizes miniaturization.
Embodiment two: present embodiment is described in conjunction with Fig. 1, first metal floor 1 described in present embodiment with the ultra wideband omni-directional radiation printed antenna of being with resistance characteristic is identical with the second metal floor 2 structures, and the first metal floor 1 one side corresponding with the second metal floor 2 is connected to form by the first vertical edge 1-1, the first arc-shaped edges 1-2, the second arc-shaped edges 1-3, three-arc limit 1-4, the 4th arc-shaped edges 1-5, the first horizontal edge 1-6, the 6th arc-shaped edges 1-7 and the second vertical edge 1-8 head and the tail successively rounding off.
The technique effect of present embodiment is: so arrange, first make antenna there is symmetrical structure, the far-field pattern of antenna can not distorted, next adopts multi-section circular arc and straight transitions structure, make the distance of the surface current walking on the metal floor of this circular arc and straight transitions longer, antenna can be worked in lower frequency, realize the ultra broadband characteristic of antenna.Other composition and annexation are identical with embodiment one.
Embodiment three: in conjunction with Fig. 1, present embodiment is described, the thickness of dielectric-slab 7 described in present embodiment with the ultra wideband omni-directional radiation printed antenna of band resistance characteristic is 1.5mm, and the relative dielectric constant of dielectric-slab 7 is 4.4.
The technique effect of present embodiment is: so arrange, this dielectric-slab be FR-4 epoxy plate, the material of dielectric-slab is polytetrafluoroethylene, thickness and the relative dielectric constant of this dielectric-slab are stipulated, and the cost of this dielectric-slab is very low, the antenna that utilizes this dielectric-slab design to invent can make the cost of manufacture of this antenna greatly reduce.Other composition and annexation are identical with embodiment one.
Embodiment four: in conjunction with Fig. 1, present embodiment is described, the diameter described in present embodiment with distance between the first metal floor 1 and second metal floor 2 of ultra wideband omni-directional radiation printed antenna of band resistance characteristic and radiating element 3 is identical.
The technique effect of present embodiment is: so arrange, make the level of impedance match of this antenna reach optimum, this antenna can be reached at applicable frequency range standing internal wave ratio and be less than 2, reach the index request of ultra-wideband communications to antenna standing wave ratio.Other composition and annexation are identical with embodiment one.
By Fig. 2 to Fig. 9, can find out: at 3.1GHz～11.9GHz standing internal wave than VSWR < 2, band stopband is wide is 5.05GHz～5.84GHz, directional diagram at 3.1GHz～11.9GHz internal antenna is stable, very low in 5.05GHz～5.84GHz gain, explanation, in this frequency range internal antenna radiation hardly, has realized and has been with resistive energy.
Claims (4)
1. the ultra wideband omni-directional radiation printed antenna with band resistance characteristic, it is characterized in that: described in there is band resistance characteristic ultra wideband omni-directional radiation printed antenna comprise the first metal floor (1), the second metal floor (2), radiating element (3), metal micro-strip line (4) and dielectric-slab (7), metal micro-strip line (4) is vertically printed on the positive basifacial of dielectric-slab (7), and the base positive with dielectric-slab (7), the lower end of metal micro-strip line (4) contacts, radiating element (3) is semicircle, radiating element (3) is printed on the positive bottom of dielectric-slab (7), and the straight flange of radiating element (3) is connected with the upper end of metal micro-strip line (4), the first metal floor (1) and the second metal floor (2) line symmetry centered by metal micro-strip line (4) is printed on the front of dielectric-slab (7), the bottom of the first metal floor (1) is provided with first font gap (5), the bottom of the second metal floor (2) is provided with second font gap (6).
2. the ultra wideband omni-directional radiation printed antenna according to claim 1 with band resistance characteristic, it is characterized in that: the first metal floor (1) is identical with the second metal floor (2) structure, the first metal floor (1) one side corresponding with the second metal floor (2) is connected to form by the first vertical edge (1-1), the first arc-shaped edges (1-2), the second arc-shaped edges (1-3), three-arc limit (1-4), the 4th arc-shaped edges (1-5), the first horizontal edge (1-6), the 6th arc-shaped edges (1-7) and the second vertical edge (1-8) head and the tail successively rounding off.
3. the ultra wideband omni-directional radiation printed antenna according to claim 1 with band resistance characteristic, is characterized in that: the thickness of dielectric-slab (7) is 1.5mm, the relative dielectric constant of dielectric-slab (7) is 4.4.
4. the ultra wideband omni-directional radiation printed antenna according to claim 1 with band resistance characteristic, is characterized in that: the distance between the first metal floor (1) and the second metal floor (2) is identical with the diameter of radiating element (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410010197.7A CN103700937B (en) | 2014-01-09 | 2014-01-09 | There is the ultra wideband omni-directional radiation printed antenna of band-stop response |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410010197.7A CN103700937B (en) | 2014-01-09 | 2014-01-09 | There is the ultra wideband omni-directional radiation printed antenna of band-stop response |
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| Publication Number | Publication Date |
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| CN103700937A true CN103700937A (en) | 2014-04-02 |
| CN103700937B CN103700937B (en) | 2015-12-30 |
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| CN201410010197.7A Active CN103700937B (en) | 2014-01-09 | 2014-01-09 | There is the ultra wideband omni-directional radiation printed antenna of band-stop response |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7061442B1 (en) * | 2005-02-05 | 2006-06-13 | Industrial Technology Research Institute | Ultra-wideband antenna |
| CN101752665A (en) * | 2010-01-21 | 2010-06-23 | 上海大学 | UWB (ultra wide band) antenna with band-stop characteristic |
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2014
- 2014-01-09 CN CN201410010197.7A patent/CN103700937B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7061442B1 (en) * | 2005-02-05 | 2006-06-13 | Industrial Technology Research Institute | Ultra-wideband antenna |
| CN101752665A (en) * | 2010-01-21 | 2010-06-23 | 上海大学 | UWB (ultra wide band) antenna with band-stop characteristic |
Non-Patent Citations (1)
| Title |
|---|
| M. GOPIKRISHNA等: "Design of a compact semi-elliptic monopole slot antenna for UWB system", 《IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION》 * |
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| CN103700937B (en) | 2015-12-30 |
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