CN110299610A - A kind of ultra wide band low section conformal antenna - Google Patents
A kind of ultra wide band low section conformal antenna Download PDFInfo
- Publication number
- CN110299610A CN110299610A CN201910540947.4A CN201910540947A CN110299610A CN 110299610 A CN110299610 A CN 110299610A CN 201910540947 A CN201910540947 A CN 201910540947A CN 110299610 A CN110299610 A CN 110299610A
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- Prior art keywords
- antenna
- conformal
- support construction
- wide band
- ultra wide
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/12—Supports; Mounting means
- H01Q1/1207—Supports; Mounting means for fastening a rigid aerial element
-
- 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
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/42—Housings not intimately mechanically associated with radiating elements, e.g. radome
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q23/00—Antennas with active circuits or circuit elements integrated within them or attached to them
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- Details Of Aerials (AREA)
Abstract
The invention discloses a kind of ultra wide band low section conformal antennas, including multiple radiating elements and multiple dummy units, radiating element and dummy unit use tightly coupled form, adjacent unit is tightly coupled together, and radiating element is connect by power resistor with dummy unit, radiating element and dummy unit are printed on medium substrate, and multiple ports are combined to by the way that power splitter progress constant amplitude is same.One layer of covering is provided on the outside of conformal antenna, inside is provided with support construction, and mounting hole is provided in support construction, and conformal antenna is externally mechanically connected by mounting hole.The octave that relative bandwidth of the present invention can achieve 8 times is even broader, and antenna height just corresponds to 0.22 λ of center frequency point, is equivalent to 0.06 λ of low frequency, and antenna can be conformal with body covering, and directed radiation may be implemented using the metal plate of internal body.In the ultra wide band of 8 octaves, the directional diagram of antenna is stablized, and torticollis will not occur, fall the distortion phenomenons such as hole.
Description
Technical field
The invention belongs to field of communication technology more particularly to a kind of ultra wide band low section conformal antennas.
Background technique
In IEEE Std145-1993, give the definition of conformal antenna: conformal antenna is to keep one with object shape
The antenna or antenna array of cause.And the shape of usually object is non-planar form, the antenna shapes that this requires be conformal therewith
With remoldability.Microstrip antenna is made of ground plane, dielectric substrate and microstrip element, is usually printed on soft base material and thick
Spend it is relatively thin, shape have certain bendable folding endurance, be the ideal chose of conformal antenna.
But the defect that microstrip antenna also has its intrinsic.As a kind of resonant aerial, it is in parallel that Q one high can be equivalent to
Resonance circuit, it is meant that the energy ratio radiation and other dissipation energies being stored in antenna structure are much bigger, thus when work frequency
Rate slightly off-resonance point when, reactive component can change dramatically, so microstrip antenna has relatively narrow frequency band, standing-wave ratio is not more than
The relative bandwidth calculation formula of ρ are as follows:
Thus illustrate, the Basic Ways of broadening microstrip antenna frequency band are to reduce the Q value of equivalent resonant circuit.Have at present very
The technology of more broadening microstrip antenna frequency points, comprising:
A) using thick dielectric-slab；
B) dielectric-slab low using dielectric constant；
C) using wedge shape or stairstepping dielectric-slab；
D) in patch or earth plate uplifting window；
E) additional impedance matching network；
F) grounding probe is loaded；
G) multi-resonant chip technology；
H) paster structure is become using non-frequency.
In above method: a), b) two methods are directly based upon the bandwidth formula of microstrip antenna, because with Q and εrIt is directly proportional,
It is inversely proportional with h, reduces εrOr increase h can directly reduce the Q value of equivalent resonant circuit, therefore can suitably increase micro-strip
The bandwidth of antenna, however the effect of both methods is extremely limited, and the design for conformal antenna, and thickness cannot be excessively increased
Spend h；Although c), d) two methods can broaden bandwidth, this feelings is not suitable for according to the design limitation condition of conformal antenna yet
Shape；E), f) method can be used in the design of broadband conformal antenna, but matching network e), f) be constructed in method or load is short
Road probe is more complicated, and design difficulty is big；Although g), h) method clear principle is illustrated, it is more suited to broadband conformal antenna
Design, but the frequency band of its broadening is still limited.
In document " research of broadband conformal antenna " the 4th chapter using method g) in the way of coplanar parasitic patch pair
The frequency band of microstrip antenna is extended, it is the resonance principle based on more patches, makes multiple microband pastes of design respectively not
Same frequency point resonance, by controlling patch effects of coupling between, realization frequency point combination ultimately forms a wider frequency range,
As shown in Fig. 1.But its relative bandwidth still only has 14%, is unable to satisfy requirement of the electronic countermeasure field to antenna bandwidth.
It is micro- that a electromagnetic coupling type devised in the way of non-frequency structure changes using method h) in above-mentioned the 5th chapter of document
Band log-periodic antenna, as shown in Fig. 2, working band can reach as 4.4GHz~12GHz, relative bandwidth reaches 3 octaves, if
Bandwidth is further increased, then needs to increase antenna length, patch is become using non-frequency as much as possible, but due to not being complete right
One number time structure, with the increase of frequency, beam shape can be distorted, influence system use.
Summary of the invention
To solve the above-mentioned problems, the present invention proposes a kind of ultra wide band low section conformal antenna, specifically, including multiple spokes
Penetrate unit and multiple dummy units, the radiating element and dummy unit are printed on medium substrate, the radiating element it
Between and dummy unit between connected by tightly coupled mode, one end of the radiating element is connected virtual by power resistor
Unit, the other end connects power splitter, and carries out constant amplitude with being combined to by power splitter, to improve the gain of conformal antenna, reduces
Influence of the external environment to conformal antenna direction.One layer of covering is provided on the outside of the conformal antenna, inside is provided with support
Interlayer antenna house is collectively formed in structure, the covering and support construction, i.e. conformal antenna is built in interlayer antenna house.
Further, mounting hole is provided in the support construction, the conformal antenna connects by the way that mounting hole is externally mechanical
It connects, to realize the conformal of conformal antenna and mounting platform.
Further, the both ends of the support construction are additionally provided with the fastener perpendicular to support construction, the support knot
Structure is connect by fastener with the metallic reflection plate on mounting platform surface layer, to realize the directed radiation of conformal antenna.
Further, the radiating element and dummy unit are microstrip antenna or dipole antenna.
The beneficial effects of the present invention are:
(1) relative bandwidth can achieve 8 times octave it is even broader；
(2) antenna height just corresponds to 0.22 λ of center frequency point, is equivalent to 0.06 λ of low frequency, and antenna can be covered with carrier
Skin is conformal, and directed radiation may be implemented using the metal plate of carrier inside；
(3) in the ultra wide band of 8 octaves, the directional diagram of antenna is stablized, and torticollis will not occur, fall the distortion phenomenons such as hole.
Detailed description of the invention
Fig. 1 is the S of the microstrip antenna of parasitic rectangular patch11Simulation result；
Fig. 2 is the Pattern measurement result of electromagnetic coupling type micro belt logarithmic cycle antenna；
Fig. 3 is principle of the invention figure；
Fig. 4 is schematic structural view of the invention；
Fig. 5 is antenna model figure；
Fig. 6 is antenna standing-wave ratio simulation result；
Fig. 7 is the Direction Pattern Simulation result in antenna bearingt and pitching face；
Fig. 8 antenna standing-wave ratio test result；
Fig. 9 is Pattern measurement result；
Appended drawing reference: 1- covering, 2- medium substrate, 3- support construction, 4- metallic reflection plate, 5 fasteners.
Specific embodiment
For a clearer understanding of the technical characteristics, objects and effects of the present invention, this hair of Detailed description of the invention is now compareed
Bright specific embodiment.It should be appreciated that described herein, specific examples are only used to explain the present invention, is not used to limit
The present invention, i.e., described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Usually here
The component of the embodiment of the present invention described and illustrated in attached drawing can be arranged and be designed with a variety of different configurations.Therefore, with
Under the range of claimed invention is not intended to limit to the detailed description of the embodiment of the present invention provided in the accompanying drawings,
But it is merely representative of selected embodiment of the invention.Based on the embodiment of the present invention, those skilled in the art are not making wound
Every other embodiment obtained under the premise of the property made is worked, shall fall within the protection scope of the present invention.
Embodiment 1
The present embodiment proposes a kind of ultra wide band low section conformal antenna, as shown in figure 3, conformal antenna by radiating element and
Dummy unit collectively constitutes.Radiating element and dummy unit are printed on thin medium substrate, between radiating element and empty
It is connected between quasi-simple member by tightly coupled mode, while using power resistor and dummy unit phase in the end of radiating element
Even.Finally using power splitter to carry out the port of multiple radiating elements, constant amplitude is same to be combined to, for improving the gain of conformal antenna,
Reduce influence of the external environment to conformal antenna direction.Wherein, radiating element is identical as dummy unit structure, can use micro-strip
Antenna form or dipole antenna form etc. are constituted, and FR-4 epoxy resin board can be used in medium substrate.
Since medium substrate is softer, in order to solve conformal antenna installation question, spy uses the technology mode of co-curing.Such as figure
Shown in 4, conformal antenna is integrated in antenna house, is similar to A interlayer antenna house.External in conformal antenna increases thin illiteracy
Skin, while increasing support construction (need to have enough intensity) in the inside of conformal antenna, and increase installation on the support structure
The conformal while anti-by the metal on mounting platform surface layer of conformal antenna and mounting platform is realized for being externally mechanically connected in hole
Penetrate the directed radiation that plate realizes antenna.
Embodiment 2
The present embodiment is on the basis of embodiment 1:
The antenna of the present embodiment is the conformal reception day of ultra wide band low section that a working band is 0.1GHz~0.8GHz
Line, simulation model are as shown in Figure 5.
Standing-wave ratio simulation result as shown in fig. 6, antenna voltage standing wave ratio (Voltage Standing Wave
Ratio, VSWR) it is not more than 2.0 bandwidth for 0.1GHz~0.8GHz, relative bandwidth reaches 8 times of octave.
Direction Pattern Simulation result is as shown in fig. 7, wherein (a), (b) respectively represent the Direction Pattern Simulation in azimuth plane and pitching face
As a result, different curves represents the directional diagram of different frequency.From simulation result as can be seen that the antenna is in 0.1GHz~0.8GHz
Ultrabroad band in directional diagram it is more smooth, do not occur torticollis, fall phenomena such as cheating, and the height of entire antenna just corresponds to center
0.22 λ of frequency point is equivalent to 0.06 λ of low frequency.
Embodiment 3
The present embodiment is on the basis of embodiment 2:
In order to verify effectiveness of the invention, the present embodiment has made antenna material object according to simulation model and has carried out performance survey
Examination.
Test results are shown in figure 8 for standing-wave ratio in kind, surveys in the ultrabroad band standing-wave ratio of 0.1GHz~0.8GHz
Test result is not more than 2.09.
Pattern measurement result in kind is as shown in figure 9, antenna direction in the ultrabroad band of 0.1GHz~0.8GHz
Figure is stablized, and variation is more smooth, does not occur torticollis, falls phenomena such as cheating, sufficiently demonstrates effectiveness of the invention, meet electronics pair
Requirement of the anti-field to antenna low section, ultrabroad band.
The above is only a preferred embodiment of the present invention, it should be understood that the present invention is not limited to described herein
Form should not be regarded as an exclusion of other examples, and can be used for other combinations, modifications, and environments, and can be at this
In the text contemplated scope, modifications can be made through the above teachings or related fields of technology or knowledge.And those skilled in the art institute into
Capable modifications and changes do not depart from the spirit and scope of the present invention, then all should be in the protection scope of appended claims of the present invention
It is interior.
In the description of the present invention, it should be noted that term " center ", "upper", "lower", "left", "right", "inner",
The orientation or positional relationship of the instructions such as "outside" is to be based on the orientation or positional relationship shown in the drawings or when present invention uses is used
The orientation or positional relationship often put, is merely for convenience of description of the present invention and simplification of the description, rather than indication or suggestion is signified
Device or element must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as to the present invention
Limitation.
In the description of the present invention, it is also necessary to which explanation is unless specifically defined or limited otherwise, term " setting ",
" installation ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integrally connect
It connects；It can be mechanical connection, be also possible to be electrically connected；It can be wired connection, be also possible to be wirelessly connected.
Claims (4)
1. a kind of ultra wide band low section conformal antenna, which is characterized in that described including multiple radiating elements and multiple dummy units
Radiating element and dummy unit are printed on medium substrate, pass through tight coupling between the radiating element and between dummy unit
The mode of conjunction connects, and one end of the radiating element connects dummy unit by power resistor, and the other end connects power splitter, and leads to
Power splitter progress constant amplitude is crossed to be combined to together；
One layer of covering is provided on the outside of the conformal antenna, inside is provided with support construction, and the covering and support construction are total
With interlayer antenna house is formed, i.e. conformal antenna is built in interlayer antenna house.
2. a kind of ultra wide band low section conformal antenna according to claim 1, which is characterized in that set in the support construction
It is equipped with mounting hole, the conformal antenna is externally mechanically connected by mounting hole.
3. a kind of ultra wide band low section conformal antenna according to claim 2, which is characterized in that the two of the support construction
End is additionally provided with the fastener perpendicular to support construction, and the support construction is anti-by fastener and the metal on mounting platform surface layer
Penetrate plate connection.
4. a kind of ultra wide band low section conformal antenna according to claim 1, which is characterized in that the radiating element and void
Quasi-simple member is microstrip antenna or dipole antenna.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910540947.4A CN110299610A (en) | 2019-06-21 | 2019-06-21 | A kind of ultra wide band low section conformal antenna |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910540947.4A CN110299610A (en) | 2019-06-21 | 2019-06-21 | A kind of ultra wide band low section conformal antenna |
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| CN110299610A true CN110299610A (en) | 2019-10-01 |
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| CN201910540947.4A Pending CN110299610A (en) | 2019-06-21 | 2019-06-21 | A kind of ultra wide band low section conformal antenna |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111430931A (en) * | 2020-04-01 | 2020-07-17 | 武汉虹信通信技术有限责任公司 | Radiation sheet for broadband antenna and broadband antenna |
| CN112467351A (en) * | 2020-11-19 | 2021-03-09 | 中国电子科技集团公司第二十九研究所 | Multi-resonance excitation back cavity antenna |
| CN113612009A (en) * | 2021-08-03 | 2021-11-05 | 中国电子科技集团公司第三十八研究所 | Airborne conformal bearing antenna |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111430931A (en) * | 2020-04-01 | 2020-07-17 | 武汉虹信通信技术有限责任公司 | Radiation sheet for broadband antenna and broadband antenna |
| CN111430931B (en) * | 2020-04-01 | 2022-01-11 | 武汉虹信科技发展有限责任公司 | Radiation sheet for broadband antenna and broadband antenna |
| CN112467351A (en) * | 2020-11-19 | 2021-03-09 | 中国电子科技集团公司第二十九研究所 | Multi-resonance excitation back cavity antenna |
| CN113612009A (en) * | 2021-08-03 | 2021-11-05 | 中国电子科技集团公司第三十八研究所 | Airborne conformal bearing antenna |
| CN113612009B (en) * | 2021-08-03 | 2023-05-09 | 中国电子科技集团公司第三十八研究所 | Airborne conformal bearing antenna |
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