CN109873249A - A kind of micro-strip navigation antenna with air back chamber - Google Patents
A kind of micro-strip navigation antenna with air back chamber Download PDFInfo
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- CN109873249A CN109873249A CN201711259831.0A CN201711259831A CN109873249A CN 109873249 A CN109873249 A CN 109873249A CN 201711259831 A CN201711259831 A CN 201711259831A CN 109873249 A CN109873249 A CN 109873249A
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Abstract
The present invention relates to satellite navigation aerial technical fields, specifically disclose a kind of micro-strip navigation antenna with air back chamber.It is groove structure inside structural cavity body in the navigation antenna packet, the structural cavity body fence structure that its four peripheral wall is formed, on the structural cavity body fence structure that micro-strip printed board emission layer radio frequency substrate is mounted on, micro-strip printed board radiating layer radio frequency substrate and structural cavity body is made to form air back chamber radiating layer；It is printed with micro-strip printed board radiating layer metal pattern in micro-strip printed board radiating layer radio frequency upper surface of base plate, feed connector is installed at structural cavity body back, so that the feed connector conductor in feed connector is passed through structural cavity body and is connected with metal pattern.It carries on the back chamber radiating layer using air increased in structural cavity body, it realizes that the disadvantages of small to conventional microstrip satellite navigation aerial radiation bandwidth, radiation efficiency is low or directionality is poor makes up, solves microstrip antenna and be installed on the engineering problem that big temperature becomes, faces for closing on the real satellites navigation application such as multifrequency point.
Description
Technical field
The invention belongs to satellite navigation aerial technical fields, and in particular to a kind of micro-strip navigation antenna with air back chamber.
Background technique
Microstrip antenna causes the very big concern in antenna works field, this is much after early 1970s propose
It has been more than other any fields of antenna research and development.Compared with other antennas, microstrip antenna has the advantages that several well-known, packet
Include low section, light-weight, manufacturing cost is low, robustness and with microwave monolithic integrated circuit and integrated optoelectronic circuit technical compatibility
Deng.Because of these advantages, microstrip antenna has become the satellite navigation terminals such as application most bis- generation of GPS, BD now and receives
Antenna.
But traditional microstrip antenna also has inherent defect: narrower bandwidth, and due to surface wave excitation, conductor and medium
It loses and makes its radiation efficiency relatively low.As the Beidou II navigation system of China's independent research enters the practical stage,
More navigation system receivers are propagated its belief on a large scale, and the gain of bandwidth requirement and each frequency point to navigation antenna, polarization require it is all urgent
It needs to be improved.Especially when to adapt to navigation antenna miniature requirement, designers more and more use high dielectric
The medium substrate of constant designs microstrip antenna, and will lead to the further decline of the beamwidth of antenna and radiation efficiency at this time.
Impedance matching carried out to traditional microstrip antenna using broadband feeding network, available wider impedance bandwidth,
But still the radiation bandwidth of antenna can not be improved, or even due to the use of antenna feeder network cause the radiation efficiency of antenna further under
Drop.Lower antenna circular polarisation gain will lead to the quality of reception decline of navigation satellite signal, and make to design for high dynamic environment
The lower satellite navigation receiver of receiving sensitivity can not work normally.It the use of stacked microstrip antenna is current solution multifrequency point
The major design scheme of receiving antenna, but such microstrip antenna is more suitable for receiving the farther away satellite letter of center frequency point difference
Number.When the center frequency point of received satellite navigation signals is closer to, then there can be signal cross-talk phenomenon between stacked antenna.It is laminated micro-
It is not improved the bandwidth of single microstrip antenna with Antenna Design, biggish Redundancy Design is not present, once microstrip antenna works
Under the more violent environment of such as temperature change, due to medium substrate electrical property variation caused by antenna frequencies drift about, can
The phenomenon that capable of causing required navigation signal frequency range that cannot be covered by Antenna Operation frequency range.
Summary of the invention
The purpose of the present invention is to provide a kind of micro-strip navigation antennas with air back chamber, solve microstrip antenna and are installed on greatly
Temperature becomes, the engineering problem that faces for closing on the real satellites navigation application such as multifrequency point, can obtain wider impedance bandwidth,
Circular polarization radiation bandwidth and higher radiation efficiency.
Technical scheme is as follows: a kind of micro-strip navigation antenna with air back chamber, which includes micro-strip
Printed board radiating layer radio frequency substrate, structural cavity body and feed connector, wherein it is groove structure inside structural cavity body, four
The structural cavity body fence structure that peripheral wall is formed, the structural cavity body fence structure that micro-strip printed board emission layer radio frequency substrate is mounted on
On, so that micro-strip printed board radiating layer radio frequency substrate and structural cavity body is formed air back chamber radiating layer；In micro-strip printed board radiating layer
Radio frequency upper surface of base plate is printed with micro-strip printed board radiating layer metal pattern, is equipped with feed connector at structural cavity body back,
Make the feed connector conductor in feed connector pass through structural cavity body to be connected with micro-strip printed board radiating layer metal pattern.
Micro-strip printed board radiating layer feed via hole, feed connection are provided on the micro-strip printed board radiating layer metal pattern
Feed connector conductor in device passes through the hollow cylinder structure inside structural cavity body, and is fed by micro-strip printed board radiating layer
Via hole is connected with micro-strip printed board radiating layer metal pattern.
The micro-strip printed board radiating layer radio frequency substrate is made of high dielectric constant material, and metal is printed in upper surface
Pattern, lower surface is without metal covering.
The micro-strip printed board radiating layer radio frequency substrate uses the ceramic composite of dielectric constant 10.9, surface
Metal pattern is that floating copper is gold-plated, and takes right-handed circular polarization corner cut.
The structural cavity body and micro-strip printed board radiating layer radio frequency substrate is formed by the air of air back chamber radiating layer
Cavity area is fully contemplated by micro-strip printed board radiating layer metal pattern, and symmetrical shape.
The thickness of the air back chamber radiating layer is adjusted according to beamwidth of antenna demand, can be adjusted between 0~8mm
It is whole.
The feed connector includes the feed connector outer conductor of ring flange coaxial connector structure, is mounted on knot
The backboard of structure cavity is connected by feed connector outer conductor with the metal direct current of structural cavity body.
Remarkable result of the invention is: a kind of micro-strip navigation antenna with air back chamber of the present invention utilizes
Increased air carries on the back chamber radiating layer in structural cavity body, realizes, radiation efficiency small to conventional microstrip satellite navigation aerial radiation bandwidth
The disadvantages of low or directionality is poor makes up, and solves microstrip antenna and is installed on big temperature change, actually defends for closing on multifrequency point etc.
The engineering problem that star navigation application faces.
Detailed description of the invention
Fig. 1 is a kind of micro-strip navigation antenna side view that chamber is carried on the back with air of the present invention；
Fig. 2 is a kind of cross-sectional view of micro-strip navigation antenna that chamber is carried on the back with air of the present invention；
Fig. 3 is a kind of micro-strip navigation antenna top view that chamber is carried on the back with air of the present invention；
In figure: 1, micro-strip printed board radiating layer metal pattern；2, micro-strip printed board radiating layer radio frequency substrate；3, structure chamber
Body；4, feed connector；5, air carries on the back chamber radiating layer；6, feed connector conductor；7, structural cavity body fence structure；8, feed connects
Connect device outer conductor；9, micro-strip printed board radiating layer mounting screw；10, micro-strip printed board radiating layer feeds via hole.
Specific embodiment
The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.
As shown in Figures 1 to 3, a kind of micro-strip navigation antenna with air back chamber, including micro-strip printed board radiating layer radio frequency base
Plate 2, structural cavity body 3 and feed connector 4, wherein the micro-strip printed board radiating layer radio frequency substrate of square structure passes through micro-
Band printed board radiating layer mounting screw 9 is mounted in structural cavity body 3, wherein the supporting walls of 3 surrounding of structural cavity body form structure chamber
External wall construction is groove structure inside structural cavity body 3, penetrates structural cavity body 3 and the micro-strip printed board radiating layer of slab construction
Frequency substrate 2 forms air and carries on the back chamber radiating layer 5；Micro-strip printed board is printed in 2 upper surface of micro-strip printed board radiating layer radio frequency substrate
Radiating layer metal pattern 1, and micro-strip printed board radiating layer feed via hole is provided on micro-strip printed board radiating layer metal pattern 1
10；Feed connector 4 is mounted on the back side of structural cavity body, and straight by feed connector outer conductor 8 and the metal of structural cavity body
Conductance is logical, has hollow cylinder structure in 3 interior location of structural cavity body of installation feed connector 4, feed connector conducting is worn
The hollow cylindrical structure is crossed, and via hole 10 and micro-strip printed board radiating layer metal pattern are fed by micro-strip printed board radiating layer
1 conducting；
Micro-strip printed board radiating layer radio frequency substrate 2 uses high dielectric constant material, such as the Ceramic Composite of dielectric constant 10.9
Material, metal pattern is printed using ordinary printed board machining process in surface on it, such as micro-strip printed board radiating layer metal pattern
It is gold-plated for floating copper, and right-handed circular polarization corner cut is taken to design；2 lower surface of micro-strip printed board radiating layer radio frequency substrate is without metal covering；
Micro-strip printed board radiating layer radio frequency substrate 2 can be other shapes, wherein when rectangular configuration, micro-strip that periphery quadrangle passes through metal
Printed board radiating layer mounting screw and structural cavity body 3 are fixedly mounted；Structural cavity body 3 and micro-strip printed board radiating layer radio frequency substrate 2
The air cavity area for being formed by air back chamber radiating layer 5 should be fully contemplated by microstrip antenna surface metal pattern, symmetrical shape, and
The thickness of air back chamber radiating layer 5 is adjusted according to beamwidth of antenna demand, and air chamber thickness adjusts between 0~8mm；Feed
Connector 4 uses 50 ohm of probe coaxial connectors of flange plate, and ring flange is installed on 3 back side of structural cavity body, feed connection
Device conductor 6 carries out welding with micro-strip printed board radiating layer metal pattern 1 by scolding tin and is connected.
Claims (7)
1. a kind of micro-strip navigation antenna with air back chamber, it is characterised in that: the navigation antenna includes micro-strip printed board radiating layer
Radio frequency substrate (2), structural cavity body (3) and feed connector (4), wherein it is groove structure inside structural cavity body (3), four
The structural cavity body fence structure (7) that peripheral wall is formed, the structural cavity body enclosure wall that micro-strip printed board emission layer radio frequency substrate (2) is mounted on
In structure (7), micro-strip printed board radiating layer radio frequency substrate (2) and structural cavity body (3) is made to form air back chamber radiating layer (5)；?
Micro-strip printed board radiating layer radio frequency substrate (2) upper surface is printed with micro-strip printed board radiating layer metal pattern (1), in structural cavity body
(3) back is equipped with feed connector (4), and the feed connector conductor (6) in feed connector (4) is made to pass through structural cavity body
(3) it is connected with micro-strip printed board radiating layer metal pattern (1).
2. a kind of micro-strip navigation antenna with air back chamber according to claim 1, it is characterised in that: the micro-strip print
Micro-strip printed board radiating layer feed via hole (10), the feed in feed connector (4) are provided on making sheet radiating layer metal pattern (1)
Connector conductor (6) passes through structural cavity body (3) internal hollow cylinder structure, and feeds via hole by micro-strip printed board radiating layer
(10) it is connected with micro-strip printed board radiating layer metal pattern (1).
3. a kind of micro-strip navigation antenna with air back chamber according to claim 1, it is characterised in that: the micro-strip print
Making sheet radiating layer radio frequency substrate (2) is made of high dielectric constant material, and metal pattern is printed in upper surface, and lower surface is without metal
Covering.
4. a kind of micro-strip navigation antenna with air back chamber according to claim 3, it is characterised in that: the micro-strip print
Making sheet radiating layer radio frequency substrate (2) uses the ceramic composite of dielectric constant 10.9, and the metal pattern on surface is floating copper plating
Gold, and take right-handed circular polarization corner cut.
5. a kind of micro-strip navigation antenna with air back chamber according to claim 1, it is characterised in that: the structure chamber
The air cavity area that body (3) is formed by air back chamber radiating layer (5) with micro-strip printed board radiating layer radio frequency substrate (2) is contained completely
Lid micro-strip printed board radiating layer metal pattern (1), and symmetrical shape.
6. a kind of micro-strip navigation antenna with air back chamber according to claim 5, it is characterised in that: the air back
The thickness of chamber radiating layer (5) is adjusted according to beamwidth of antenna demand, can be adjusted between 0~8mm.
7. a kind of micro-strip navigation antenna with air back chamber according to claim 1, it is characterised in that: the feed connects
The feed connector outer conductor (8) that device (4) includes ring flange coaxial connector structure is connect, the back of structural cavity body (3) is mounted on
Plate is connected by feed connector outer conductor (8) with the metal direct current of structural cavity body (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711259831.0A CN109873249A (en) | 2017-12-04 | 2017-12-04 | A kind of micro-strip navigation antenna with air back chamber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711259831.0A CN109873249A (en) | 2017-12-04 | 2017-12-04 | A kind of micro-strip navigation antenna with air back chamber |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109873249A true CN109873249A (en) | 2019-06-11 |
Family
ID=66915664
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711259831.0A Pending CN109873249A (en) | 2017-12-04 | 2017-12-04 | A kind of micro-strip navigation antenna with air back chamber |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114188713A (en) * | 2021-12-08 | 2022-03-15 | 贵州航天电子科技有限公司 | Structure of double-frequency broadband microstrip antenna |
| CN114188714A (en) * | 2021-12-08 | 2022-03-15 | 贵州航天电子科技有限公司 | Structure of broadband microstrip antenna |
| CN114243286A (en) * | 2021-12-03 | 2022-03-25 | 中国电子科技集团公司第二十九研究所 | Vibration and impact resistant microstrip feed antenna structure |
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| CN206564331U (en) * | 2017-01-10 | 2017-10-17 | 华南理工大学 | A kind of novel embedded broadband dual polarized antenna |
| CN107359420A (en) * | 2017-07-17 | 2017-11-17 | 桂林电子科技大学 | Miniaturization high-gain two-band circular polarized antenna |
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| US9673526B1 (en) * | 2014-03-12 | 2017-06-06 | First Rf Corporation | Dual-frequency stacked patch antenna |
| CN205303658U (en) * | 2015-11-19 | 2016-06-08 | 广东盛路通信科技股份有限公司 | Conformal microstrip antenna of missile -borne |
| CN107221743A (en) * | 2016-03-21 | 2017-09-29 | 中国工程物理研究院电子工程研究所 | A kind of phased array element of broadband and wideangle circular polarisation |
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| CN106935963A (en) * | 2017-01-20 | 2017-07-07 | 西南电子技术研究所（中国电子科技集团公司第十研究所） | High isolation dual polarized circumferential weld microband antenna unit |
| CN107196050A (en) * | 2017-07-07 | 2017-09-22 | 桂林电子科技大学 | A kind of miniaturized dual-band circular polarized antenna for loading electromagnetism Meta Materials |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114243286A (en) * | 2021-12-03 | 2022-03-25 | 中国电子科技集团公司第二十九研究所 | Vibration and impact resistant microstrip feed antenna structure |
| CN114188713A (en) * | 2021-12-08 | 2022-03-15 | 贵州航天电子科技有限公司 | Structure of double-frequency broadband microstrip antenna |
| CN114188714A (en) * | 2021-12-08 | 2022-03-15 | 贵州航天电子科技有限公司 | Structure of broadband microstrip antenna |
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Application publication date: 20190611 |