CN205992588U - A kind of plane trident shape ultra-wideband antenna with trap characteristic - Google Patents
A kind of plane trident shape ultra-wideband antenna with trap characteristic Download PDFInfo
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- CN205992588U CN205992588U CN201621072980.7U CN201621072980U CN205992588U CN 205992588 U CN205992588 U CN 205992588U CN 201621072980 U CN201621072980 U CN 201621072980U CN 205992588 U CN205992588 U CN 205992588U
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Abstract
A kind of plane trident shape ultra-wideband antenna with trap characteristic, is related to ultra-wideband antenna.It is provided with upper strata planar metallic structure and layer dielectric substrate；Described upper strata planar metallic structure includes co-planar waveguide signal feed band wire, co-planar waveguide ground plane, antenna radiation unit and a pair of L-type open circuit minor matters；It is provided with the stepped transmission structure of one section of second order between co-planar waveguide signal feed band wire and antenna radiation unit；The pair of L-type open circuit minor matters are connected with co-planar waveguide ground plane, and a pair of L-type open circuit minor matters is symmetrically distributed in co-planar waveguide signal feed band wire both sides.Working frequency range scope is wide, and loss is low, and radiation characteristic is good, and structure is simply it is easy to process.Radiating element is designed to the shape of fork, reduces the volume of antenna.The length of minor matters of being opened a way by change L-type, thus trap frequency scope needed for adjustment.
Description
Technical field
This utility model is related to ultra-wideband antenna, especially relates to suppress the letter from WLAN (WLAN)
Number interference a kind of plane trident shape ultra-wideband antenna with trap characteristic.
Background technology
With the continuous improvement of wireless communication technology, people are for the need of the aspects such as the capacity of wireless communication system, speed
Ask and increasingly increase so that Radio Spectrum Resource is more crowded.Ultra-wideband Communication Technology (UWB, ultra-wideband) conduct
A kind of new wireless communication technology, has the features such as working frequency range scope is wide, transfer rate is high, asthenia ability is strong, thus
Become one of research emphasis both domestic and external in the last few years.And the carrier as electromagnetic radiation and reception, ultra-wideband antenna is super
Indispensable part in wide-band communication system, its performance will directly affect the transmission performance of system, therefore for ultra broadband
The research of antenna is significant.
Early in the sixties in 20th century, it is logical that Ultra-wideband Communication Technology just has been applied in radar, positioning, sensing and secrecy
The fields such as letter.2002, FCC (FCC) passed through the preliminary specification that UWB applies in civil area, open
3.1～10.6GHz is as the operating frequency range of radio ultra wide band system.However, in this frequency range, also existing some other narrow
Band communication system, such as frequency range are located at WLAN (WLAN) of 5.15～5.825GHz etc..In order to avoid from other frequency ranges
Interference, the ultra-wideband antenna with trap characteristic arises at the historic moment.By introducing trap structure in antennas so that antenna is can
Larger reflection is produced, thus suppressing the transmission of interference signal in the frequency range that can be interfered.The method introducing trap characteristic has
A lot, for example introduce resonator in the antenna structure thus producing filter function, or in radiating element or ground unit corrosion
Go out gap of different shapes, or be to load parasitic minor matters etc. in the antenna structure.
Chinese patent CN102800958A discloses a kind of four trap UWB antennas, including：Dielectric-slab, radiating element, two
Individual small one and large one two C-shaped channel being etched on radiating element, two identical L-shaped open circuit branches of increase on radiating element
Section, feed element, and a T-shaped parasitism band wire in the printing of the back side of dielectric-slab and metal ground plate.
Chinese patent CN205406731U discloses a kind of plane ultra-wideband antenna with trap characteristic, including substrate, institute
The front stating substrate is provided with a circular ring-shaped radiation unit, and the back side is provided with a rectangle ground；Set in described circular ring-shaped radiation unit
It is equipped with a gap, the front of described substrate is additionally provided with a microstrip line coupling with described circular ring-shaped radiation unit, and described seam
Gap is located between microstrip line and circular ring-shaped radiation unit.
Content of the invention
The purpose of this utility model is that offer can suppress of the signal interference from WLAN (WLAN)
Plant the plane trident shape ultra-wideband antenna with trap characteristic.
This utility model is provided with upper strata planar metallic structure and layer dielectric substrate；Described upper strata planar metallic structure includes
Co-planar waveguide signal feed band wire, co-planar waveguide ground plane, antenna radiation unit and a pair of L-type open circuit minor matters；In co-planar waveguide
It is provided with the stepped transmission structure of one section of second order between signal feed band wire and antenna radiation unit；The pair of L-type open circuit minor matters
Connect with co-planar waveguide ground plane, a pair of L-type open circuit minor matters is symmetrically distributed in co-planar waveguide signal feed band wire both sides.
Described layer dielectric substrate can adopt FR4 material, and the thickness of layer dielectric substrate can be 0.8mm, and length L can be
30.72mm, width W can be 26.85mm, and relative dielectric constant can be 4.4.
Described co-planar waveguide signal feed band wire can be rectangular configuration, length L of co-planar waveguide signal feed band wire1Can be
10.66mm, width w1Can be 1.69mm.
The stepped transmission structure of described second order can be made up of two rectangles, wherein, near co-planar waveguide signal feed band wire
Rectangle less, near co-planar waveguide signal feed band wire rectangle length L2For 8.98mm, width w2For 0.7mm；Near sky
The rectangle of beta radiation unit is larger, near length L of the rectangle of antenna radiation unit3For 10.18mm, width w3For 1mm.
Described co-planar waveguide ground plane is with co-planar waveguide signal feed band wire for two pieces of symmetrical rectangles of axis of symmetry,
There is space, the width g in space with coplanar waveguide signal feed band wire in co-planar waveguide ground plane1=0.24mm.Co-planar waveguide connects
Length G on groundLFor 8.64mm, width GwFor 12.34mm.
Described antenna radiation unit can be using the on all four fork shape of three geomeries, wherein, with second order ladder
The fork shank that shape transmission structure connects is divided into rectangle, length L4For 4.04mm, width w4For 1.68mm；Middle rectangle part
Length L5For 3.45mm, width w5For 1mm；It is spaced substantially equidistant by three size identical rectangles foremost and constitutes, wherein rectangle
Length L6For 5.32mm, width w6For 0.49mm.
During described L-type open circuit minor matters are connected with co-planar waveguide ground plane, short partial-length L7For 0.45mm, the part of length
Length L8For 8.16mm, the width w of whole L-type open circuit minor matters7For 0.45mm.
This utility model in 3.1～4.9GHz and 5.9～10.6GHz band limits standing internal wave ratio respectively less than 2, in ultra-wide
With in working frequency range atmosphere, there is good impedance operator and radiation direction.The band limits of trap is 4.9～5.9GHz, can
Filter the interference signal of WLAN frequency range, realize high-quality ultra-wideband communications.
Characteristic and advantage that this utility model has：
Utility model works band limits is wide, and loss is low, and radiation characteristic is good, and structure is simply it is easy to process.This practicality is new
The radiating element of type is designed to the shape of fork, reduces the volume of antenna.This utility model can be by changing L-type open circuit
The length of minor matters, thus trap frequency scope needed for adjustment.
Brief description
Fig. 1 is the structural representation of this utility model embodiment；
Fig. 2 is the top view of this utility model embodiment；
Fig. 3 is the open circuit impact to aerial voltage standing-wave ratio for the minor matters of this utility model embodiment；
Fig. 4 is the open circuit impact to aerial voltage standing-wave ratio for the minor matters of this utility model embodiment；
Fig. 5 is this utility model embodiment S11And gain curve；
Fig. 6 is the far field radiation pattern in this utility model embodiment E face；
Fig. 7 is the far field radiation pattern in this utility model embodiment H face.
Specific embodiment
Below in conjunction with the drawings and specific embodiments, this utility model is described further.
As illustrated in fig. 1 and 2, this utility model embodiment is provided with upper strata planar metallic structure and layer dielectric substrate 6；Described
Upper strata planar metallic structure includes co-planar waveguide signal feed band wire 1, co-planar waveguide ground plane 4, antenna radiation unit 3 and a pair
L-type open circuit minor matters 5；It is provided with the stepped transmission of one section of second order between co-planar waveguide signal feed band wire 1 and antenna radiation unit 3
Structure 2；The pair of L-type open circuit minor matters 5 are connected with co-planar waveguide ground plane 4, and a pair of L-type open circuit minor matters 5 is symmetrically distributed in altogether
Face waveguide signal feed band wire 1 both sides.
Described layer dielectric substrate 1 can adopt FR4 material, and the thickness of layer dielectric substrate 1 can be 0.8mm, and length L can be
30.72mm, width W can be 26.85mm, and relative dielectric constant can be 4.4.
Described co-planar waveguide signal feed band wire 1 can be rectangular configuration, length L of co-planar waveguide signal feed band wire 11Can
For 10.66mm, width w1Can be 1.69mm.
The stepped transmission structure 2 of described second order can be made up of two rectangles, wherein, near co-planar waveguide signal feed band wire
1 rectangle is less, near length L of the rectangle of co-planar waveguide signal feed band wire 12For 8.98mm, width w2For 0.7mm；Close
The rectangle of antenna radiation unit 3 is larger, near length L of the rectangle of antenna radiation unit 33For 10.18mm, width w3For 1mm.
Described co-planar waveguide ground plane 4 is with co-planar waveguide signal feed band wire 1 for two pieces of symmetrical squares of axis of symmetry
Shape, there is space, the width g in space with coplanar waveguide signal feed band wire 1 in co-planar waveguide ground plane 41=0.24mm.Coplanar ripple
Connect length G on ground 4LFor 8.64mm, width GwFor 12.34mm.
Described antenna radiation unit 3 can be using the on all four fork shape of three geomeries, wherein, with second order ladder
The fork shank that shape transmission structure 2 connects is divided into rectangle, length L4For 4.04mm, width w4For 1.68mm；Middle rectangle part
Length L5For 3.45mm, width w5For 1mm；It is spaced substantially equidistant by three size identical rectangles foremost and constitutes, wherein rectangle
Length L6For 5.32mm, width w6For 0.49mm.
During described L-type open circuit minor matters 5 are connected with co-planar waveguide ground plane 4, short partial-length L7For 0.45mm, the portion of length
Divide length L8For 8.16mm, the width w of whole L-type open circuit minor matters 57For 0.45mm；Length L of minor matters 6 of being opened a way by L-type7And L8
Can be to the mid frequency f of trapnotchIt is adjusted, its relational expression is：
In formula, c is the light velocity in vacuum, εeffFor effective dielectric constant, LtotalThe total length of minor matters 5 of opening a way for L-type, its
In, Ltotal=L7+L8.As can be seen that when the length changing L-type open circuit minor matters 5, the mid frequency of trap also can be therewith from formula
Change.Fig. 3, Fig. 4 are L7And L8The comparison diagram that length change affects on antenna standing wave ratio.It can be seen that working as L7And L8's
When length increases, the mid frequency of trap will move to low frequency.
As shown in Fig. 5～7, the antenna shown in this utility model has good broadband character and radiation characteristic, simultaneously
There is trap in 4.9～5.9GHz, can effectively exclude the signal interference from WLAN.
This utility model utilizes length-adjustable open circuit minor matters to load so that ultra-wideband antenna is in 4.9～5.9GHz frequency range
In the range of increased the trap of regulable center frequency, thus effectively filtering the interference signal from WLAN.Meanwhile, the transmitting of antenna
Unit is designed to the shape of fork, effectively reduces the size of antenna.
Claims (8)
1. a kind of plane trident shape ultra-wideband antenna with trap characteristic is it is characterised in that be provided with upper strata planar metallic structure
With layer dielectric substrate；Described upper strata planar metallic structure includes co-planar waveguide signal feed band wire, co-planar waveguide ground plane, sky
Beta radiation unit and a pair of L-type open circuit minor matters；It is provided with one section between co-planar waveguide signal feed band wire and antenna radiation unit
The stepped transmission structure of second order；The pair of L-type open circuit minor matters are connected with co-planar waveguide ground plane, a pair of L-type open circuit minor matters pair
Claim to be distributed in co-planar waveguide signal feed band wire both sides.
2. as claimed in claim 1 a kind of plane trident shape ultra-wideband antenna with trap characteristic it is characterised in that described
The thickness of layer dielectric substrate is 0.8mm, and length L is 30.72mm, and width W is 26.85mm.
3. as claimed in claim 1 a kind of plane trident shape ultra-wideband antenna with trap characteristic it is characterised in that described
The relative dielectric constant of layer dielectric substrate is 4.4.
4. as claimed in claim 1 a kind of plane trident shape ultra-wideband antenna with trap characteristic it is characterised in that described
Co-planar waveguide signal feed band wire is rectangular configuration, length L of co-planar waveguide signal feed band wire1For 10.66mm, width w1For
1.69mm.
5. as claimed in claim 1 a kind of plane trident shape ultra-wideband antenna with trap characteristic it is characterised in that described
The stepped transmission structure of second order is made up of two rectangles, and wherein, the squareness ratio of close co-planar waveguide signal feed band wire is near sky
The rectangle of beta radiation unit is little, near length L of the rectangle of co-planar waveguide signal feed band wire2For 8.98mm, width w2For
0.7mm；Length L near the rectangle of antenna radiation unit3For 10.18mm, width w3For 1mm.
6. as claimed in claim 1 a kind of plane trident shape ultra-wideband antenna with trap characteristic it is characterised in that described
Co-planar waveguide ground plane is with co-planar waveguide signal feed band wire for two pieces of symmetrical rectangles of axis of symmetry, and co-planar waveguide is grounded
There is space, the width g in space with coplanar waveguide signal feed band wire in face1=0.24mm；Length G of co-planar waveguide ground planeLFor
8.64mm, width GwFor 12.34mm.
7. as claimed in claim 1 a kind of plane trident shape ultra-wideband antenna with trap characteristic it is characterised in that described
Antenna radiation unit adopts the on all four fork shape of three geomeries, and wherein, transmission structure stepped with second order connects
Fork shank be divided into rectangle, length L4For 4.04mm, width w4For 1.68mm；Middle rectangle part length L5For 3.45mm,
Width w5For 1mm；It is spaced substantially equidistant by three size identical rectangles foremost and constitute, wherein length L of rectangle6For 5.32mm,
Width w6For 0.49mm.
8. as claimed in claim 1 a kind of plane trident shape ultra-wideband antenna with trap characteristic it is characterised in that described L
Type open circuit minor matters are connected with co-planar waveguide ground plane, short partial-length L7For 0.45mm, the partial-length L of length8For
8.16mm, the width w of whole L-type open circuit minor matters7For 0.45mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621072980.7U CN205992588U (en) | 2016-09-23 | 2016-09-23 | A kind of plane trident shape ultra-wideband antenna with trap characteristic |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621072980.7U CN205992588U (en) | 2016-09-23 | 2016-09-23 | A kind of plane trident shape ultra-wideband antenna with trap characteristic |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205992588U true CN205992588U (en) | 2017-03-01 |
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ID=58105831
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621072980.7U Expired - Fee Related CN205992588U (en) | 2016-09-23 | 2016-09-23 | A kind of plane trident shape ultra-wideband antenna with trap characteristic |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205992588U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109103584A (en) * | 2017-07-25 | 2018-12-28 | 惠州市德赛西威汽车电子股份有限公司 | A kind of claw-like novel coplanar waveguide cascade millimetre-wave radar antenna |
| CN114696098A (en) * | 2020-12-29 | 2022-07-01 | ***通信集团终端有限公司 | Plane ultra-wideband antenna |
-
2016
- 2016-09-23 CN CN201621072980.7U patent/CN205992588U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109103584A (en) * | 2017-07-25 | 2018-12-28 | 惠州市德赛西威汽车电子股份有限公司 | A kind of claw-like novel coplanar waveguide cascade millimetre-wave radar antenna |
| CN114696098A (en) * | 2020-12-29 | 2022-07-01 | ***通信集团终端有限公司 | Plane ultra-wideband antenna |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170301 Termination date: 20190923 |