CN106299689A - A kind of ultra broadband low section vertical depolarized omnidirectional antenna - Google Patents
A kind of ultra broadband low section vertical depolarized omnidirectional antenna Download PDFInfo
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- CN106299689A CN106299689A CN201610793509.5A CN201610793509A CN106299689A CN 106299689 A CN106299689 A CN 106299689A CN 201610793509 A CN201610793509 A CN 201610793509A CN 106299689 A CN106299689 A CN 106299689A
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- antenna
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- duplexer
- ultra broadband
- frequency
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/50—Structural association of antennas with earthing switches, lead-in devices or lightning protectors
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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
- H01Q13/08—Radiating ends of two-conductor microwave transmission lines, e.g. of coaxial lines, of microstrip lines
Abstract
The invention discloses a kind of ultra broadband low section vertical depolarized omnidirectional antenna, this antenna is made up of duplexer and two antennas placed up and down, two of which antenna structure is identical, and size is different, and the top metal plate intermediate recess of the low-frequency antenna of bottom is to reduce section height.Feed structure and short-circuit structure are curved-surface structure, and curved-surface structure can significantly improve the coupling of antenna.Antenna carries out capacitive-loaded by short-circuit structure, and top is loaded by flat-top and then reduces lowest operating frequency.Two antennas are connected in parallel in duplexer, and duplexer is made up of microstrip structure and capacitor and inductor.In 101MHz 600MHz frequency range, return loss is more than 10dB (corresponding standing-wave ratio less than 2), and in the out-of-roundness of working band internal antenna less than ± 3dB for this antenna.Its basic structure includes high frequency antenna (1)；Low-frequency antenna (2)；Micro-strip duplexer (3)；Metal floor (4).
Description
Technical field
The invention belongs to antenna works technical field, relate to a kind of ultra broadband low section omnidirectional antenna, specifically
A kind of ultra broadband low section vertical depolarized omnidirectional antenna that can be used for radar communication and wireless communication field.
Background technology
The fast development of wireless messages technology, has made society enter into the epoch of wireless messages communication, the most wireless
Information technology is had higher requirement to communication system again, promotes communication system to send out towards miniaturization with broadband direction
Exhibition.Along with the continuous progress of the military technologies such as radar, early warning, detection, missile guidance and electronic countermeasure, also promote various electricity
Subset is all developing towards miniaturization with broadband direction.In recent years, Ultra-wideband Communication Technology is paid close attention to widely, by
Traffic rate can be significantly increased in it and there is the advantages such as low in energy consumption so that Ultra-wideband Communication Technology increasingly shows
Go out the advantage of its uniqueness.Antenna is as vitals indispensable in wireless communication system, at present, and low section ultra-wideband antenna
Design yet suffer from larger-size deficiency.The reduction of antenna section height, the miniaturization of antenna, remain present research
Focus.
Monopole antenna is loaded by dome and periphery grounding probe loads, it is possible to achieve ultra wideband.H.Nakano
Et al. at IEEE Trans.Antennas Propag., (vol.56, no.4, pp.1187 1192, April.2008) delivers
Entitled " A wideband low-profile antenna composed of a conducting body of
Revolution and a shorted parasitic ring " in describe a kind of low section ultra-wideband antenna, this antenna exists
The bandwidth standing internal wave ratio of 147% is less than 2, and this antenna is similar to monopole antenna, and upper end loads a circular metal plate and annular gold
Belonging to sheet, annular sheet metal is connected on floor by 4 grounding probes.J.Zhao et al. is at IEEE Trans.Antennas
Propag., (vol.60, no.12, pp.5578 5586, Dec.2012.) has delivered entitled " Design optimization
Of a low-profile UWB body-of-revolution monopole antenna " article, systematic research
The monopole antenna design process of body-of-revolution (BoR) form, but this BoR monopole depends on evolution and calculates
Method, moulding is special, is difficult to processing.Adel Elsherbini et al. is at IEEE Antennas&Wireless
Propag.Letters (vol.10, pp.800 803,2011) has delivered " Very low-profile top-loaded UWB
Coupled sectorial loops antenna " literary composition, this antenna feed structure uses del structure, and top is same
It is that circular metal plate loads with annular sheet metal, is connected on floor by grounding probe.The above ultra-wideband antenna, although
Bandwidth has reached requirement, but at the directional diagram of high-frequency band, the antenna of single antenna construction easily occurs that wave beam upwarps divides with wave beam
The phenomenon such as split.
Nader Behdad et al. IEEE Antennas&Wireless Propag.Letters (vol.12,
Pp.280 283,2013) deliver " A very low-profile, omnidirectional, ultrawideband
Antenna " literary composition, this aerial head utilizes rectangular metal plate to load, and feed structure and short circuit loading structure use and tilt three
Angular structure, is down to 0.033 λ by section heightmin, this antenna at the bandwidth standing internal wave ratio of 4:1 less than 3.Nader Behdad etc.
People, at IEEE Trans.Antennas Propag., (vol.63, no.8, pp.3699 3705, Aug.2015.) delivers
Entitled " Alow-profile, vertically polarized ultrawideband antenna with monopole-
Like radiation characteristics " article, select two antennas above, structure is identical, varies in size,
Two upper and lower superpositions of antenna are placed, utilizes a duplexer by two Antenna Operation in an input.Section height is
0.046λmin, this antenna is at the bandwidth standing internal wave ratio of 8.5:1 less than 3, and directional diagram out-of-roundness is improved.
Summary of the invention
The present invention is in view of above-mentioned technical background, it is therefore intended that solves prior art and there is ultra-wideband omni-directional antenna out-of-roundness
The problem that difference, section are high, bandwidth is not enough, it is proposed that a kind of ultra broadband low section vertical depolarized omnidirectional antenna.This antenna exists
In 101MHz-600MHz frequency range, return loss is more than 10dB (corresponding standing-wave ratio is less than 2), and at working band internal antenna not
Circularity less than ± 3dB, the gain-7dB on azimuth plane between-2dB, the maximum gain of antenna is 101MHz-600MHz's
In the range of be all higher than 5dBi.Antenna section height is 190mm, i.e. 0.063 λmin.This antenna feeds by the way of the end presents, and passes through
Duplexer, by two antenna Shared aperture, is operated in 101MHz-600MHz frequency range together.
This antenna is applicable to the application that requirement section is low, return loss is low, out-of-roundness is little, please also refer to Fig. 1 to Fig. 4,
Its basic structure includes high frequency antenna 1: oval calotte feed structure 5, oval calotte short circuit loading structure 6, top rectangular are golden
Belong to flat board loading structure 7；Low-frequency antenna 2: oval calotte feed structure 8, oval calotte short circuit loading structure 9, umbilicate
Top rectangular metal plate loading structure 10；Micro-strip duplexer 3: low pass filter 11, high pass filter 12, one-to-two microstrip line
With mate minor matters 13, transition line coupling minor matters 14；Metal floor 4.
The innovation of the present invention mainly has following 4 points: 1) in order to improve the coupling of required frequency range, uses oval calotte feed
Structure and oval calotte short circuit loading structure, oval structure improves the coupling of antenna greatly, enables the antenna to enough be matched to stay
Ripple is less than 2；2) in order to preferably by the Antenna Operation of two frequency ranges in an input, devise micro-strip duplexer, utilize
HFSS and ADS associative simulation, designs the micro-strip duplexer of needs well；3) in order to reduce the loop antenna gain at azimuth plane
Two antenna rotary cross are placed by out-of-roundness, reduce the impact of the electric current of two antenna horizontal directions；4) in order to reduce section
Highly, making the flat board intermediate recess at low-frequency antenna top, on the premise of not affecting antenna performance, the section reducing antenna is high
Degree.
It is characteristic of the invention that and utilize micro-strip duplexer by two Antenna Operation placing up and down in an input, duplex
Device is printed on dielectric-slab, and two antennas are all-metal construction, and two antenna structures are identical, and size is different, on two antennas
Lower placement, selects to intersect and places.
Accompanying drawing explanation
For the technical scheme being illustrated more clearly that in the embodiment of the present invention, in embodiment being described below required for make
Accompanying drawing be briefly described, it should be apparent that, below describe in accompanying drawing be only one embodiment of the present of invention, for
From the point of view of those of ordinary skill in the art, on the premise of not paying creative work, it is also possible to obtain other according to these accompanying drawings
Accompanying drawing.
Fig. 1 is a kind of ultra broadband low section vertical depolarized omnidirectional antenna perspective signal that one embodiment of the present invention provides
Figure；
Fig. 2 is the perspective diagram of the high frequency antenna shown in Fig. 1；
Fig. 3 is the perspective diagram of the low-frequency antenna shown in Fig. 1；
Fig. 4 is the top view of micro-strip duplexer shown in Fig. 1；
When Fig. 5 is not add micro-strip duplexer, the return loss simulation result schematic diagram of two ports of two antennas；
Fig. 6 is the standing wave simulation result schematic diagram of ultra-wideband omni-directional antenna input port；
Fig. 7 is the gain simulation result schematic diagram in each frequency range in pitching face of the ultra-wideband omni-directional antenna shown in Fig. 1；
Fig. 8 is the gain simulation result schematic diagram in each frequency range of azimuth plane of the ultra-wideband omni-directional antenna shown in Fig. 1；
Specific embodiments
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Describe, it is clear that described embodiment is only one embodiment of the invention rather than whole embodiments wholely.Based on this
Embodiment in invention, the every other reality that those of ordinary skill in the art are obtained under not making creative work premise
Execute example, broadly fall into the scope of protection of the invention.
Please also refer to Fig. 1 to Fig. 4, the ultra broadband low section vertical omnidirection antenna provided for embodiment of the present invention.Institute
State ultra broadband low section omnidirectional antenna and specifically include that high frequency antenna 1 according to describing shown in Fig. 1 to Fig. 4: oval calotte feed structure 5,
Oval calotte short circuit loading structure 6, top rectangular metal plate loading structure 7；Low-frequency antenna 2: oval calotte feed structure 8,
Oval calotte short circuit loading structure 9, umbilicate top rectangular metal plate loading structure 10；Micro-strip duplexer 3: low pass filtered
Ripple device 11, high pass filter 12, one-to-two microstrip line with mate minor matters 13, transition line coupling minor matters 14；Metal floor 4.
High frequency antenna 1 and low-frequency antenna 2 are all-metal construction, and low-frequency antenna 1 height is 160mm, and high frequency antenna is 60mm,
The flat board cup depth at low-frequency antenna 2 top is 30mm, and the height of whole ultra-wideband antenna is 190mm, and cross section is 800mm*
800mm.High frequency antenna 1 is tied by oval calotte feed structure 5, oval calotte short circuit loading structure 6 and top rectangular metal plate
Structure 7 is constituted.Oval calotte feed structure 5 is similar to inverted triangle structure, bottom drift angle feed, by the height of coaxial line Yu duplexer
The port of bandpass filter is connected.Oval calotte short-circuit structure 6 is also similar inverted triangle structure, and bottom drift angle is shorted to low frequency sky
Line 2, low-frequency antenna is equivalent to the floor of high frequency antenna.Low-frequency antenna 2 is short by oval calotte feed structure 8, oval calotte equally
Road loading structure 9 and umbilicate rectangular metal plate loading structure 10 are constituted.Oval calotte feed structure 8 is directly and duplexer
The port of low pass filter be connected.Oval calotte short-circuit structure 8 direct short-circuit is to floor 4.
Micro-strip duplexer is printed on above floor, and input port, in the left side of transition line coupling minor matters 14, passes through one-to-two
Microstrip line with mate minor matters 13, port is divided into two-way, and completes coupling by the length of regulation coupling minor matters.Wherein a-road-through
Crossing low pass filter, microstrip line is directly connected with low-frequency antenna.Separately lead up to high pass filter, and coaxial by one
Line, then be connected with high frequency antenna.Micro-strip duplexer makes two antennas well work in same input port.
This antenna structure is vertical omnidirection antenna, and the low-frequency antenna 2 of bottom works in low frequency frequency range, about 100MHz-
300MHz, the high frequency antenna 1 of top works in high-frequency band, about 300MHz-600MHz.The dimension scale of two antennas is about
3:1, structure is identical, and rotary cross is placed.When input signal or reception signal are 100MHz-300MHz, low-frequency antenna 2
Main Function；When input signal or reception signal are 300MHz-600MHz, high frequency antenna 1 plays a major role.Two antennas
Rotary cross is placed so that the horizontal current on two aerial head flat boards is orthogonal, thus it is mutual to decrease two antennas
Impact, improves the out-of-roundness of antenna.
Fig. 5 is the return loss simulation result of two ports when not adding micro-strip duplexer of the ultra-wideband antenna shown in Fig. 1
Schematic diagram, in the range of 100MHz-300MHz, clawback loss about the 10dB of the port of low-frequency antenna, at 300MHz-
In the range of 600MHz, the clawback loss of the port of high frequency antenna is more than 10dB.Utilize micro-strip duplexer, make two Antenna Operation
In an input port, and regulate coupling.Fig. 6 is the standing wave simulation result schematic diagram of input port, at 101MHz-600MHz
In the range of, the standing wave of port is both less than 2.Fig. 7 be ultra-wideband antenna at 100MHz, 200MHz, 300MHz, 400MHz,
Six frequencies of 500MHz, 600MHz emulate the pitching face directional diagram obtained.Fig. 8 is that ultra-wideband antenna obtains six frequency emulation
Azimuth plane directional diagram.At six frequencies, directional diagram out-of-roundness is smaller, the gain-7dB on azimuth plane to-2dB it
Between, out-of-roundness is less than 4dB, and in whole frequency band, out-of-roundness is less than ± 3dB.The maximum gain of antenna is at the model of 101MHz-600MHz
5dBi it is all higher than in enclosing.
Be above to be familiar with field of the present invention engineers and technicians provide to the present invention and the description of embodiment thereof,
These descriptions should be considered to be illustrative and not restrictive.Engineers and technicians can be accordingly in invention claims
Thought is done concrete operation and is implemented, and naturally also according to the above, embodiment can be done a series of change.Above-mentioned these all
The coverage of the present invention should be considered.
Claims (5)
1. a ultra broadband low section vertical depolarized omnidirectional antenna is made up of duplexer and two antennas placed up and down, and wherein two
Individual antenna structure is identical, and size is different, and the crown center depression of bottom low-frequency antenna is to reduce section height；Its feature exists
High frequency antenna (1) is included respectively: oval calotte feed structure (5), oval calotte short circuit loading structure (6), top in described antenna
Portion's rectangular flat metal plate loading structure (7)；Low-frequency antenna (2): oval calotte feed structure (8), oval calotte short circuit load knot
Structure (9), umbilicate top rectangular metal plate loading structure (10)；Micro-strip duplexer (3): low pass filter (11), height
Bandpass filter (12), one-to-two microstrip line with mate minor matters (13), transition line coupling minor matters (14)；Metal floor (4).
A kind of ultra broadband low section vertical depolarized omnidirectional antenna the most according to claim 1 is characterized in that using oval song
Face feed structure and oval calotte short circuit loading structure.
A kind of ultra broadband low section vertical depolarized omnidirectional antenna the most according to claim 1 is characterized in that devising micro-strip
Duplexer.
A kind of ultra broadband low section vertical depolarized omnidirectional antenna the most according to claim 1 is characterized in that two antennas
Rotary cross is placed, and reduces the out-of-roundness of antenna.
A kind of ultra broadband low section vertical depolarized omnidirectional antenna the most according to claim 1 is further characterized in that low-frequency antenna
The flat board intermediate recess at top, on the premise of not affecting antenna performance, reduces the section height of antenna.
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| CN201610793509.5A CN106299689B (en) | 2016-08-31 | 2016-08-31 | A kind of ultra wide band low section vertical depolarized omnidirectional antenna |
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| CN201610793509.5A CN106299689B (en) | 2016-08-31 | 2016-08-31 | A kind of ultra wide band low section vertical depolarized omnidirectional antenna |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108183293A (en) * | 2017-12-11 | 2018-06-19 | 南京理工大学 | Plane micro-strip duplexer |
| CN110350308A (en) * | 2019-07-15 | 2019-10-18 | 重庆大学 | A kind of ultra wide band low section vertical depolarized omnidirectional antenna and its trap design |
| CN114336033A (en) * | 2022-01-24 | 2022-04-12 | 南通大学 | Ultra-wideband blade-shaped vertical polarization omnidirectional antenna |
| CN114865293A (en) * | 2022-05-16 | 2022-08-05 | 电子科技大学 | Cavity-loading ultra-wideband horizontal omnidirectional antenna with matching circuit |
| CN116190995A (en) * | 2022-12-19 | 2023-05-30 | 中国电子科技集团公司第十研究所 | Ultra-short wave broadband omnidirectional antenna capable of being flush-mounted |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108183293A (en) * | 2017-12-11 | 2018-06-19 | 南京理工大学 | Plane micro-strip duplexer |
| CN110350308A (en) * | 2019-07-15 | 2019-10-18 | 重庆大学 | A kind of ultra wide band low section vertical depolarized omnidirectional antenna and its trap design |
| CN110350308B (en) * | 2019-07-15 | 2020-12-18 | 重庆大学 | Ultra-wideband low-profile vertical polarization omnidirectional antenna and trapped wave design method thereof |
| CN114336033A (en) * | 2022-01-24 | 2022-04-12 | 南通大学 | Ultra-wideband blade-shaped vertical polarization omnidirectional antenna |
| CN114865293A (en) * | 2022-05-16 | 2022-08-05 | 电子科技大学 | Cavity-loading ultra-wideband horizontal omnidirectional antenna with matching circuit |
| CN114865293B (en) * | 2022-05-16 | 2023-08-18 | 电子科技大学 | Matching circuit loading buried cavity type ultra-wideband horizontal omnidirectional antenna |
| CN116190995A (en) * | 2022-12-19 | 2023-05-30 | 中国电子科技集团公司第十研究所 | Ultra-short wave broadband omnidirectional antenna capable of being flush-mounted |
| CN116190995B (en) * | 2022-12-19 | 2024-02-23 | 中国电子科技集团公司第十研究所 | Ultra-short wave broadband omnidirectional antenna capable of being flush-mounted |
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