CN108539356A - A kind of ultra wide band slot antenna with filter function - Google Patents
A kind of ultra wide band slot antenna with filter function Download PDFInfo
- Publication number
- CN108539356A CN108539356A CN201810272337.6A CN201810272337A CN108539356A CN 108539356 A CN108539356 A CN 108539356A CN 201810272337 A CN201810272337 A CN 201810272337A CN 108539356 A CN108539356 A CN 108539356A
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- China
- Prior art keywords
- antenna
- ladder
- microstrip line
- ultra wide
- filter function
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q13/00—Waveguide horns or mouths; Slot antennas; Leaky-waveguide antennas; Equivalent structures causing radiation along the transmission path of a guided wave
- H01Q13/10—Resonant slot antennas
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P7/00—Resonators of the waveguide type
- H01P7/08—Strip line resonators
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
- H01Q1/38—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith formed by a conductive layer on an insulating support
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
- H01Q5/20—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements characterised by the operating wavebands
- H01Q5/25—Ultra-wideband [UWB] systems, e.g. multiple resonance systems; Pulse systems
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- Waveguide Aerials (AREA)
Abstract
The invention discloses a kind of ultra wide band slot antennas with filter function, including dielectric-slab, ladder feeding microstrip line is set along center line in medium plate top surface, open seam slot is provided in antenna back panel, the position of open seam slot is coupled with ladder feeding microstrip line；In antenna back panel, closes on open seam slot and be provided with narrowband clearance channel.The present invention substantially increases the frequency selective characteristic of sideband under the premise of not increasing antenna size itself, improves the inhibition of out-of-band interference signal, applies in target acquisition, the ultra wide bands such as target following and short-distance wireless communication field.
Description
Technical field
The invention belongs to ultra-wideband antenna technical fields, are related to a kind of ultra wide band slot antenna with filter function.
Background technology
With the development of wireless communication technique, Ultra-wideband Communication Technology had obtained good development, ultra wide band day in recent years
Line has received extensive research as the important component in ultra-wideband communications.
Due to bandwidth that ultra wide band is wider in actual engineer application, it is easy to by the shadow of some outer interference signals of band
It rings.The receptivity of receiver can be seriously affected by introducing interference signal in the received signal.In traditional engineer application, lead to
Often a bandpass filter is connected in the rear end of reception antenna to inhibit the interference of out of band signal.However, antenna in this method
The size and cost of radio-frequency front-end can be increased as two independent devices with filtering.Therefore, design has filter function
Ultra-wide band filter is for reducing the size of radio-frequency front-end and to reduce cost significant.2013, Sai Wai Wong were carried
A kind of planar printed antenna is gone out, which realizes frequency selection using 4 short-circuit connecting line connection radiant panels and floor
The promotion of characteristic and filtering characteristic, size 28.5mm × 28mm of the antenna.The shortcoming of the antenna, lower sideband frequency
Characteristic is selected to adjust difficult, it is not easy to improve.In R.Li and P.Gao in 2016 and 2017, Sahoo, Anuj Kumar
Monopole printing radiating antenna is all used, there is the feeding microstrip line of filtering characteristic by the Position Design in feeding microstrip line
To promote the frequency selective characteristic of antenna.This method is similar to the feed end for integrating filter into antenna, to a certain extent
Save independent filter.But the size of entire antenna increased because filter structure is added, respectively 28.5mm ×
28mm, 53mm × 42mm.Under conditions of not increasing antenna size, the frequency selective characteristic of antenna is promoted, is made it have preferably
Out-of-band rejection effect, this is of great significance for application of the ultra-wideband antenna in ultra-wideband communications.
Invention content
The object of the present invention is to provide a kind of ultra wide band slot antennas with filter function, solve conventional radio frequency front end
Middle stand-alone antenna and filter size are greatly and problem of high cost.
The technical solution adopted by the present invention is a kind of ultra wide band slot antenna with filter function, including dielectric-slab,
Ladder feeding microstrip line is arranged along center line in medium plate top surface, and open seam slot, open seam slot are provided in antenna back panel
Position coupled with ladder feeding microstrip line；In antenna back panel, closes on open seam slot and be provided with narrowband clearance channel.
The ultra wide band slot antenna with filter function of the present invention, it is further characterized in that：
The ladder feeding microstrip line is using high low-impedance fed microstrip cable architecture.
In the ladder feeding microstrip line, the length of ladder microstrip line is respectively L4=2mm, L6=1.6mm, L8=
2mm；The distance between ladder microstrip line is respectively L5=0.7mm, L7=2.4mm, L9=2mm；Connect the width of ladder microstrip line
For W3=0.4mm；Ladder microstrip line terminal rectangle width W6=2mm, length L3=5.4mm.
The Opening length L of the antenna back panel split shed clearance channel (3)2=4.2mm, gap length L10=8.1mm, it is wide
Spend W1The distance of=0.5mm, aperture slots slot distance feed port are L1=15mm.
The length L of narrowband clearance channel in the antenna back panel11=8.5mm, width W2=0.5mm.
The invention has the advantages that including dielectric-slab, the ladder feeding microstrip line with filter function, aperture slots
Slot, and the narrowband clearance channel of current path can be extended.Ultra-wideband antenna reflection can be promoted using ladder feeding microstrip line
Frequency selective characteristic of the coefficient in high frequency；It can improve the impedance of low frequency by increasing narrowband clearance channel near open seam slot
And frequency selective characteristic.Return loss of the ultra-wideband antenna in the entire frequency ranges of 3.1-10.6GHz is less than -10dBm, and antenna exists
There is lower sideband good frequency selective characteristic, out of band signal to inhibit preferable, have good filter effect；The direction of antenna
Figure is that omnidirectional compares with similar antenna, and the present invention substantially increases the frequency of sideband under the premise of not increasing antenna size itself
Rate selects characteristic, improves the inhibition of out-of-band interference signal, applies in target acquisition, target following and short-distance wireless communication
Equal ultra wide bands field.
Description of the drawings
Fig. 1 is ultra-wideband antenna overall structure diagram of the present invention；
Fig. 2 is the reflectance factor test result curve of ultra-wideband antenna of the present invention；
Fig. 3 is the ultra-wideband antenna of the present invention faces E polar coordinates directional diagram in 4GHz；
Fig. 4 is the ultra-wideband antenna of the present invention faces H polar coordinates directional diagram in 4GHz；
Fig. 5 is the ultra-wideband antenna of the present invention faces E polar coordinates directional diagram in 5GHz；
Fig. 6 is the ultra-wideband antenna of the present invention faces H polar coordinates directional diagram in 5GHz.
In figure, 1. ladder feeding microstrip lines, 2. antenna back panels, 3. open seam slots, 4. narrowband clearance channels.
Specific implementation mode
The following describes the present invention in detail with reference to the accompanying drawings and specific embodiments.
Referring to Fig.1, micro band superwide band antenna structure of the present invention with trap function is that dielectric-slab selects the plank of Rogers
Or other planks using microwave frequency band, such as Rogers, ceramics etc., it is contemplated that the working frequency of antenna is higher, with Rogers
Plank high frequency stability it is more preferable, preferably the dielectric-slab of the RT/Duroid5880 of Rogers, the dielectric constant of the dielectric-slab are
2.2, thickness 0.787mm；In medium plate top surface along center line setting ladder feeding microstrip line 1, ladder feeding microstrip line 1 uses
High low-impedance feeding microstrip line frame mode, makes it have preferable frequency selective characteristic in high frequency；
Open seam slot 3 is provided in antenna back panel 2, the position of open seam slot 3 is coupled with ladder feeding microstrip line 1
Form radiation effect；After the opening of open seam slot 3 is obviously widened, it is made to have better impedance and radiation characteristic in high frequency.
It in antenna back panel 2, closes on open seam slot 3 and is provided with narrowband clearance channel 4 so that resistance of the entire antenna in low frequency
Anti- to be improved, the bandwidth of operation and frequency selective characteristic to make antenna have good improvement.
The total optimization size of conventional microstrip antenna is long 24mm, wide 12mm, thick 0.7mm, and the present invention need not increase
The size for adding antenna by ladder feeding microstrip line 1, and increases narrowband clearance channel 4 near open seam slot 3, it will be able to
Realize the improvement of the frequency selective characteristic of high and low frequency.
The effective dimensions range at each position of above structure of the present invention is respectively：
The entire length L of antenna be 24mm ± 0.1mm, width W be 12mm ± 0.1mm, thickness be 0.787mm ±
0.001mm；
In symmetrical ladder feeding microstrip line 1, the length of ladder microstrip line is respectively L4=2mm, L6=1.6mm, L8=
2mm；The distance between ladder microstrip line is respectively L5=0.7mm, L7=2.4mm, L9=2mm；Connect the width of ladder microstrip line
For W3=0.4mm；Ladder microstrip line terminal rectangle width W6=2mm, length L3=5.4mm；
The Opening length L of 2 split shed clearance channel 3 of antenna back panel2=4.2mm, gap length L10=8.1mm, width W1=
0.5mm, distance of the open seam slot 3 apart from feed port are L1=15mm；
The length L of narrowband clearance channel 4 in antenna back panel 211=8.5mm, width W2=0.5mm.
Fig. 2 is the reflectance factor test result curve of the ultra-wideband antenna of the invention with trap function, vertical in the curve
Coordinate is reflectance factor, and abscissa is frequency, wherein the bandwidth of -10dB reflectance factors is that can receive band limits, in the range of
3.1-10.6GHz meeting ultra-wideband receiver band requirement.Antenna reflection coefficient is steeper in lower sideband emission ratio, and antenna has
Preferable frequency selective characteristic；Band external reflectance coefficient is flat, and Out-of-band rejection is preferable.
Fig. 3-Fig. 6 is inventive antenna respectively in the faces ultra-wideband antenna E of 4GHz, 5GHz frequency range, the faces H polar coordinates direction
Figure, wherein Fig. 3 indicate that directional diagram is sat in the faces 4GHz E pole, and Fig. 4 indicates that directional diagram is sat in the faces 4GHz H pole, and Fig. 5 indicates the faces 5GHz E pole
Directional diagram is sat, Fig. 6 indicates that directional diagram is sat in the faces 5GHz H pole.It is bright from the faces E and the faces H both direction figure in 4GHz, 5GHz frequency range
It is aobvious to find out that inventive antenna has good omnidirectional radiation characteristic, i.e., it is non-directional, there is preferable range of receiving.
Claims (5)
1. a kind of ultra wide band slot antenna with filter function, it is characterised in that：Including dielectric-slab, in medium plate top surface in
Ladder feeding microstrip line (1) is arranged in heart line, and open seam slot (3) is provided in antenna back panel (2), open seam slot (3)
Position is coupled with ladder feeding microstrip line (1)；In antenna back panel (2), closes on open seam slot (3) and be provided with narrowband clearance channel
(4)。
2. the ultra wide band slot antenna according to claim 1 with filter function, it is characterised in that：The ladder feedback
Electric microstrip line (1) is using high low-impedance fed microstrip cable architecture.
3. the ultra wide band slot antenna according to claim 1 with filter function, it is characterised in that：The ladder feedback
In electric microstrip line (1), the length of ladder microstrip line is respectively L4=2mm, L6=1.6mm, L8=2mm；Between ladder microstrip line
Distance respectively L5=0.7mm, L7=2.4mm, L9=2mm；The width for connecting ladder microstrip line is W3=0.4mm；Ladder micro-strip
Line terminal rectangle width W6=2mm, length L3=5.4mm.
4. the ultra wide band slot antenna according to claim 1 with filter function, it is characterised in that：The antenna back of the body
The Opening length L of plate (2) split shed clearance channel (3)2=4.2mm, gap length L10=8.1mm, width W1=0.5mm, opening
Distance of the clearance channel (3) apart from feed port is L1=15mm.
5. the ultra wide band slot antenna according to claim 1 with filter function, it is characterised in that：The antenna back of the body
The length L of narrowband clearance channel (4) in plate (2)11=8.5mm, width W2=0.5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810272337.6A CN108539356B (en) | 2018-03-29 | 2018-03-29 | Ultra-wideband slot antenna with filtering function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810272337.6A CN108539356B (en) | 2018-03-29 | 2018-03-29 | Ultra-wideband slot antenna with filtering function |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108539356A true CN108539356A (en) | 2018-09-14 |
| CN108539356B CN108539356B (en) | 2021-02-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810272337.6A Active CN108539356B (en) | 2018-03-29 | 2018-03-29 | Ultra-wideband slot antenna with filtering function |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112736442A (en) * | 2020-12-24 | 2021-04-30 | 西安邮电大学 | Filtering slot antenna with directional characteristic |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101267061A (en) * | 2008-04-25 | 2008-09-17 | 华南理工大学 | A micro belt aperture shaping wave bundle antenna with serial ladder impedance line feedback |
| CN104091982A (en) * | 2014-06-25 | 2014-10-08 | 华南理工大学 | Ultra wide band rejection filter based on loading of multiple step impedance resonators |
| CN105703074A (en) * | 2016-04-08 | 2016-06-22 | 东南大学 | Gate slot ground coaxial feed capacitor loaded phase step impedance tri-polarization half-groove antenna |
-
2018
- 2018-03-29 CN CN201810272337.6A patent/CN108539356B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101267061A (en) * | 2008-04-25 | 2008-09-17 | 华南理工大学 | A micro belt aperture shaping wave bundle antenna with serial ladder impedance line feedback |
| CN104091982A (en) * | 2014-06-25 | 2014-10-08 | 华南理工大学 | Ultra wide band rejection filter based on loading of multiple step impedance resonators |
| CN105703074A (en) * | 2016-04-08 | 2016-06-22 | 东南大学 | Gate slot ground coaxial feed capacitor loaded phase step impedance tri-polarization half-groove antenna |
Non-Patent Citations (2)
| Title |
|---|
| CHIEN-JEN WANG ET AL: ""a technique of bandwidth enhancement for the slot antenna"", 《IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION》 * |
| ZHI-AN ZHENG ET AL: ""Compact Band-Rejected Ultrawideband Slot Antennas Inserting With and Resonators"", 《IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112736442A (en) * | 2020-12-24 | 2021-04-30 | 西安邮电大学 | Filtering slot antenna with directional characteristic |
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| Publication number | Publication date |
|---|---|
| CN108539356B (en) | 2021-02-12 |
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