CN105470642A - Directional antenna - Google Patents
Directional antenna Download PDFInfo
- Publication number
- CN105470642A CN105470642A CN201510954201.XA CN201510954201A CN105470642A CN 105470642 A CN105470642 A CN 105470642A CN 201510954201 A CN201510954201 A CN 201510954201A CN 105470642 A CN105470642 A CN 105470642A
- Authority
- CN
- China
- Prior art keywords
- antenna
- printed board
- antenna patch
- substrate
- over panel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- 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
- H01Q1/12—Supports; Mounting means
- H01Q1/125—Means for positioning
Abstract
The invention discloses a directional antenna. The directional antenna comprises an antenna patch printed board, a base plate and a converter plate. An antenna patch in a set shape is arranged on an upper surface of the antenna patch printed board and a feed point is arranged in a region of the antenna patch. A lower surface of the antenna patch printed board and an upper surface of the base plate are oppositely arranged and are separated from each other at a set distance, the antenna patch printed board is connected with the base plate by an insulation column, and a via hole is formed in a position, corresponding to the feed point, on the base plate. The converter plate is in gapless connection with a lower surface of the base plate and the converter plate and the base plate are common-grounded, a duct that a feed element passes through is arranged on a surface, in contact with the base plate, of the converter plate, and the feed element is connected to the feed point through the duct and the via hole. The directional antenna disclosed by the invention solves the problem that an existing circularly polarized antenna is relatively low in gain and bandwidth and relatively large in volume, thereby achieving the effects of increasing the gain and the bandwidth of the circularly polarized antenna and reducing the volume.
Description
Technical field
The embodiment of the present invention relates to the communication technology, particularly relates to a kind of directional antenna.
Background technology
Antenna is indispensable important component part in radio communication and detection system, and it is the electromagnetic a kind of equipment of transmitting and receiving.From the satellite communication system that the single point point to-point communication at the beginning of last century is covering the whole world till now, antenna technology assume responsibility for role substantially, the most foremost undoubtedly, its importance in social life grows with each passing day, and has nowadays become indispensable part in modern civilization.
Due to the Faraday rotation effect of radio wave propagation in space, and the uncertainty of reception antenna position in mobile communication, if adopt traditional single-polarized antenna as Transmit-Receive Unit, need the dual-mode antenna coupling aligning that polarizes could realize good reception.And the Equal amplitude rotation field that circular polarized antenna radiates can be decomposed into two quadrature linear polarization ripples of amplitude equal phase difference 90 degree, be widely used in radio communication the problem solving polarization mismatch.
Along with the volume of radio communication terminal constantly diminishes, also there are requirements at the higher level to the size of antenna.For this reason, designer proposes a lot of scheme to realize the miniaturization of antenna.For circularly-polarized patch antenna, realizing miniaturized main method has two kinds, first: by digging the groove of various shape to reduce the size of antenna on paster.Second: the size material (as pottery) paster being overlayed on high-k reducing antenna.Although these methods effectively can reduce the size of circularly-polarized patch antenna, make the bandwidth of operation of circularly-polarized patch antenna become very narrow, make the gain reduction of antenna, thus have impact on the performance of antenna and the debugging difficulty added in actual applications.
Summary of the invention
The invention provides a kind of directional antenna, to realize the gain and the bandwidth that increase circular polarized antenna, and reduce the object of the volume of antenna.
Embodiments provide a kind of directional antenna, comprise from top to bottom set gradually antenna patch printed board, substrate and change-over panel;
The upper surface of described antenna patch printed board has the antenna patch of setting shape, is provided with a feedback point in the region of described antenna patch;
The lower surface of described antenna patch printed board and the upper surface of described substrate are oppositely arranged and at a distance of the distance that sets, described antenna patch printed board is connected by the column that insulate with described substrate, and described substrate is presented a little corresponding position be provided with a via hole with described;
The lower surface seamless connectivity of described change-over panel and described substrate, and described change-over panel and described substrate are altogether, the one side of described change-over panel and described substrate contacts is provided with the duct that electricity supply element passes, and described electricity supply element is connected to described feedback point by described duct and described via hole.
The present invention is by arranging the antenna patch of setting shape and arrange feedback point in antenna patch region at the upper surface of antenna patch printed board; According to the printed board of distance join antenna patch and the substrate of setting, and the via hole corresponding with the position of feedback point is set on substrate; The lower surface of substrate and change-over panel seamless connectivity, and the duct corresponding with crossing hole site is set in the one side of change-over panel with substrate contacts, make electricity supply element be connected to feedback point in antenna patch printed board by change-over panel and substrate, and then complete directional antenna arrangement design.The present invention solve the gain of current circular polarized antenna and bandwidth lower, the problem that volume is larger, reaches the gain and bandwidth that increase circular polarized antenna, reduces the effect of volume.
Accompanying drawing explanation
Fig. 1 is the explosive view of a kind of directional antenna in the embodiment of the present invention one;
Fig. 2 is the structural representation of the antenna patch printed board of a kind of directional antenna in the embodiment of the present invention two;
Fig. 3 is the sectional view of antenna patch printed board along A-A of a kind of directional antenna in the embodiment of the present invention two.
Embodiment
Below in conjunction with drawings and Examples, the present invention is described in further detail.Be understandable that, specific embodiment described herein is only for explaining the present invention, but not limitation of the invention.It also should be noted that, for convenience of description, illustrate only part related to the present invention in accompanying drawing but not entire infrastructure.
Embodiment one
The explosive view of a kind of directional antenna that Fig. 1 provides for the embodiment of the present invention one.Described directional antenna comprise from top to bottom set gradually antenna patch printed board 1, substrate 2 and change-over panel 3;
The upper surface of described antenna patch printed board 1 has the antenna patch 11 of setting shape, is provided with a feedback point 12 in the region of described antenna patch 11;
The lower surface of described antenna patch printed board 1 and the upper surface of described substrate 2 are oppositely arranged and the distance apart set, described antenna patch printed board 1 is connected by the column that insulate with described substrate 2, and described substrate 2 is provided with a via hole 21 with described a little 12 corresponding positions of presenting; Wherein, described insulation column can be the stud being coated with insulating barrier;
The lower surface seamless connectivity of described change-over panel 3 and described substrate 2, and described change-over panel 3 and described substrate 2 are altogether, the one side that described change-over panel 3 contacts with described substrate 2 is provided with the duct 31 that electricity supply element passes, and described electricity supply element is connected to described feedback point 12 by described duct 31 and described via hole 21.
The directional antenna of the present embodiment can use as directional receiving antenna, and working frequency range is at 1920-1980MHz, and the three decibels angle of antenna is 70 degree, and maximum gain is 8.2dBi, and the front and back ratio of gains is not less than 20dB.The size of antenna patch 11 determines the reception bandwidth sum gain of antenna, and the size of antenna patch 11 can be emulated by software HFSS (HighFrequencyStructrueSimulator, 3 D electromagnetic field simulation software) and obtain.Such as, determine that the thickness of described antenna patch printed board 1 is 2 millimeters by software HFSS emulation, the distance set between the lower surface of described antenna patch printed board 1 and the upper surface of described substrate 2 is 3.5 millimeters, described substrate 2 is metallic plate, the thickness of described substrate 2 is not less than 0.8 millimeter, described change-over panel 3 adopts epoxy glass cloth laminated board, and the thickness of described change-over panel 3 is 1 millimeter.The directional receiving antenna manufactured according to above-mentioned size can reach the working frequency range of 1920-1980MHz.
Further, described electricity supply element is RF cable, and the impedance of described RF cable is 50 ohm.Wherein, described RF cable, for passing perpendicularly through described substrate 2, connects described change-over panel 3 and described antenna patch printed board 1 by described RF cable.
The technical scheme of the present embodiment, by arranging the antenna patch 11 of setting shape and arrange feedback point 12 in antenna patch 11 region at the upper surface of antenna patch printed board 1; According to distance join antenna patch printed board 1 and the substrate 2 of setting, and the via hole 21 corresponding with the position of feedback point 12 is set on a substrate 2; The lower surface of substrate 2 and change-over panel 3 seamless connectivity, and the one side contacted with substrate 2 at change-over panel 3 arranges the duct 31 corresponding with via hole 21 position, make electricity supply element be connected to feedback point 12 in antenna patch printed board 1 by change-over panel 3 and substrate 2, and then complete directional antenna arrangement design.The present embodiment solves the gain of current circular polarized antenna and the lower and problem that volume is larger of bandwidth, reaches the gain and bandwidth that increase circular polarized antenna, reduces the effect of volume.
On the basis of technique scheme, described change-over panel 3 is provided with Surface Acoustic Wave Filter, the input of described Surface Acoustic Wave Filter is electrically connected with the first electricity supply element, and the output of described Surface Acoustic Wave Filter connects the second electricity supply element.Preferably, the frequency bandwidth of described Surface Acoustic Wave Filter is 1920MHz to 1980MHz.The benefit of such setting is to make this directional antenna have filter function, has certain inhibitory action to the radiofrequency signal outside 1920-1980MHz.
Embodiment two
Fig. 2 is the structural representation of the antenna patch printed board of a kind of directional antenna in the embodiment of the present invention two.The difference of the technical scheme of described directional antenna and above-described embodiment is to optimize further the structure of described antenna patch printed board 1, specifically comprise: the corner of described antenna patch printed board 1 is arc-shaped, the upper surface of described antenna patch printed board 1 forms antenna patch 11 by etching, wherein, the square region that described antenna patch 11 comprises top and the L shape region of bottom be communicated with described square region, and the exterior angle in described L shape region is the chamfering of 90 °, described feedback point 12 is arranged in described L shape region.Wherein, described square region is used for emitting electromagnetic wave, and described L shape region is used for impedance Control to reach the designing requirement of impedance matching.The size in described L shape region is required to determine by impedance Control.The antenna patch printed board of directional antenna shown in Figure 3 is along the sectional view of A-A, and described feedback point 12 is for running through the hole of described antenna patch printed board 1.The benefit of such setting is the circular polarization degree ensureing directional antenna, and meets the requirement of impedance matching, reaches the miniaturization of directional antenna, high-gain and wide band requirement.
Note, above are only preferred embodiment of the present invention and institute's application technology principle.Skilled person in the art will appreciate that and the invention is not restricted to specific embodiment described here, various obvious change can be carried out for a person skilled in the art, readjust and substitute and can not protection scope of the present invention be departed from.Therefore, although be described in further detail invention has been by above embodiment, the present invention is not limited only to above embodiment, when not departing from the present invention's design, can also comprise other Equivalent embodiments more, and scope of the present invention is determined by appended right.
Claims (6)
1. a directional antenna, is characterized in that, comprise from top to bottom set gradually antenna patch printed board, substrate and change-over panel;
The upper surface of described antenna patch printed board has the antenna patch of setting shape, is provided with a feedback point in the region of described antenna patch;
The lower surface of described antenna patch printed board and the upper surface of described substrate are oppositely arranged and at a distance of the distance that sets, described antenna patch printed board is connected by the column that insulate with described substrate, and described substrate is presented a little corresponding position be provided with a via hole with described;
The lower surface seamless connectivity of described change-over panel and described substrate, and described change-over panel and described substrate are altogether, the one side of described change-over panel and described substrate contacts is provided with the duct that electricity supply element passes, and described electricity supply element is connected to described feedback point by described duct and described via hole.
2. directional antenna according to claim 1, it is characterized in that, the corner of described antenna patch printed board is arc-shaped, the upper surface of described antenna patch printed board forms antenna patch by etching, wherein, the square region that described antenna patch comprises top and the L shape region of bottom be communicated with described square region, and the exterior angle in described L shape region is the chamfering of 90 °, described feedback point is arranged in described L shape region.
3. directional antenna according to claim 1, it is characterized in that, the thickness of described antenna patch printed board is 2 millimeters, the distance set between the lower surface of described antenna patch printed board and the upper surface of described substrate is 3.5 millimeters, described substrate is metallic plate, the thickness of described substrate is not less than 0.8 millimeter, and described change-over panel is epoxy glass cloth laminated board, and the thickness of described change-over panel is 1 millimeter.
4. directional antenna according to claim 1, is characterized in that, described change-over panel is provided with Surface Acoustic Wave Filter, and the input of described Surface Acoustic Wave Filter is electrically connected with the first electricity supply element, and the output of described Surface Acoustic Wave Filter connects the second electricity supply element.
5. directional antenna according to claim 4, is characterized in that, described electricity supply element is RF cable, and the impedance of described RF cable is 50 ohm.
6. directional antenna according to claim 4, is characterized in that, the frequency bandwidth of described Surface Acoustic Wave Filter is 1920MHz to 1980MHz.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510954201.XA CN105470642A (en) | 2015-12-17 | 2015-12-17 | Directional antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510954201.XA CN105470642A (en) | 2015-12-17 | 2015-12-17 | Directional antenna |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105470642A true CN105470642A (en) | 2016-04-06 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510954201.XA Pending CN105470642A (en) | 2015-12-17 | 2015-12-17 | Directional antenna |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105470642A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030112184A1 (en) * | 2001-12-14 | 2003-06-19 | Masud Jenabi | Single ku-band multi-polarization gallium arsenide transmit chip |
| KR20090012093U (en) * | 2008-05-23 | 2009-11-26 | 장용웅 | RFID High-gain circular polarization fixed RFID antenna |
| CN102646859A (en) * | 2012-02-29 | 2012-08-22 | 北京航空航天大学 | Low-profile bilayer printing ultra-wideband antenna |
| CN202817192U (en) * | 2012-10-09 | 2013-03-20 | 宝鸡烽火诺信科技有限公司 | Ultrashort wave plate-shaped antenna |
| CN103247866A (en) * | 2013-04-09 | 2013-08-14 | 北京邮电大学 | Compact type broadband bicircular polarization patch antenna based on coupling microstrip line coupler |
| CN203250851U (en) * | 2013-05-09 | 2013-10-23 | 合肥师范学院 | Four array L band omnidirectional satellite positioning antenna |
| CN203774454U (en) * | 2013-12-11 | 2014-08-13 | 成都九洲电子信息系统股份有限公司 | Circularly polarized antenna |
| CN104836019A (en) * | 2015-05-13 | 2015-08-12 | 西安电子科技大学 | Three-frequency-range common-caliber active navigation antenna |
-
2015
- 2015-12-17 CN CN201510954201.XA patent/CN105470642A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030112184A1 (en) * | 2001-12-14 | 2003-06-19 | Masud Jenabi | Single ku-band multi-polarization gallium arsenide transmit chip |
| KR20090012093U (en) * | 2008-05-23 | 2009-11-26 | 장용웅 | RFID High-gain circular polarization fixed RFID antenna |
| CN102646859A (en) * | 2012-02-29 | 2012-08-22 | 北京航空航天大学 | Low-profile bilayer printing ultra-wideband antenna |
| CN202817192U (en) * | 2012-10-09 | 2013-03-20 | 宝鸡烽火诺信科技有限公司 | Ultrashort wave plate-shaped antenna |
| CN103247866A (en) * | 2013-04-09 | 2013-08-14 | 北京邮电大学 | Compact type broadband bicircular polarization patch antenna based on coupling microstrip line coupler |
| CN203250851U (en) * | 2013-05-09 | 2013-10-23 | 合肥师范学院 | Four array L band omnidirectional satellite positioning antenna |
| CN203774454U (en) * | 2013-12-11 | 2014-08-13 | 成都九洲电子信息系统股份有限公司 | Circularly polarized antenna |
| CN104836019A (en) * | 2015-05-13 | 2015-08-12 | 西安电子科技大学 | Three-frequency-range common-caliber active navigation antenna |
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Application publication date: 20160406 |
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| RJ01 | Rejection of invention patent application after publication |