CN1156940C - Printed microstrip dipole antenna - Google Patents
Printed microstrip dipole antenna Download PDFInfo
- Publication number
- CN1156940C CN1156940C CNB001371266A CN00137126A CN1156940C CN 1156940 C CN1156940 C CN 1156940C CN B001371266 A CNB001371266 A CN B001371266A CN 00137126 A CN00137126 A CN 00137126A CN 1156940 C CN1156940 C CN 1156940C
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- dipole antenna
- circuit board
- pcb
- printed circuit
- printed
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Abstract
The present invention discloses a printed microstrip dipole antenna which comprises a printed circuit board, a first dipole antenna, a second dipole antenna and a feeder device, wherein the first dipole antenna is arranged on the first surface of the printed circuit board, the second dipole antenna is arranged on the second surface of the printed circuit board, and the two dipole antennas are mutually perpendicular in space. The feeder device formed by coaxial RF cables is used for respectively feeding the two dipole antennas. Due to a double feed-in switching mechanism and the perpendicular direction of the two dipole antennas, two of three radiation planes of X to Y, X to Z, Y to Z, etc. in the space can have favorable radiation effect.
Description
The present invention relates to a kind of printed microstrip dipole antenna, refer in particular to a kind of placing in the electronic installation, the double-fed that the is applicable to wireless communication field band printed dipole antenna of going into to decline.
Dipole antenna is because of its effectively radiation and reception electromagnetic wave, so be widely used in each field of radio communication.In existing many electronic installations, many is to select single dipole antenna for use.But on 3 radiator plane such as X-Y, the X-Z of single dipole antenna in 3d space, Y-Z, often can only make a radiator plane wherein that best radiation effect is arranged, and ignore the in addition radiation effect on two planes, and its common used feeder equipment takes up room bigger, structure is comparatively complicated, does not meet light, thin, short, the little trend of current electronic installation.
The United States Patent (USP) 4th of related art as announcing on August 12nd, 1986,605, No. 931, this antenna is the microstrip antenna that adopts the intersection feeder line, comprise somely to first feeder line and second feeder line, this first feeder line and the second feeder line coplane intersect placement, and every pair intersects the feeder line of placing and is provided with first, second, third and fourth port, wherein first port and second port are used for transmitting first signal between each other, and the 3rd port and the 4th port are used to transmit secondary signal.Adopt this kind method, the mutual interference of signal phase is little, can effectively eliminate feedback, but the structure more complicated.
The and for example a kind of circular circular polarization microstrip antenna design that is disclosed for No. 87112281 in the TaiWan, China patent application of on May 1st, 2000 bulletin with adjustable short metal patch, its circular metal patch edges in microstrip antenna adds an adjustable short metal patch, and the feed-in position becomes on the 45 degree cross spiders at short metal patch therewith, wherein the feed-in mode of antenna can be the direct feed-in of the also available microstrip line of coaxial line feed-in, and the circular metal paster is produced in the ground connection substrate.Prove that through experiment measuring this antenna has acceptance preferably at X-Y and Y-Z plane, but it is cumbersome on making, can not be one-body molded, and it is big to take up room.
The objective of the invention is at the defective that above-mentioned prior art exists provide three radiator plane such as a kind of X-Y of making, X-Z, Y-Z wherein both switch, and can reduce the printed microstrip dipole antenna of coaxial radio-frequency cable wiring path simultaneously to the influence of antenna performance.
Another object of the present invention is to provide a kind of antenna feed method, with coaxial radio-frequency cable feed-in two dipole antennas respectively, make three radiator plane such as X-Y in the space, X-Z, Y-Z wherein both have preferable radiation effect.
The objective of the invention is to be achieved through the following technical solutions, the present invention includes printed circuit board (PCB), first dipole antenna, second dipole antenna and feeder equipment, described printed circuit board (PCB) has first surface and second surface, it is characterized in that: two dipole antennas are orthogonal on the space, described first dipole antenna places on the first surface of printed circuit board (PCB), and described second dipole antenna places on the second surface of printed circuit board (PCB).
Compared to prior art, the present invention is owing to adopt double-fed to go into mode and its two dipole antennas orientation is spatially vertical, cooperate external device (ED) can make three radiator plane such as X-Y, X-Z, Y-Z wherein both switch and have a preferable radiation effect.Coaxial radio-frequency cable to this two dipole antennas feed is from the feed-in of printed circuit board (PCB) side in addition, so can effectively reduce the influence of radio frequency cable wiring path to antenna.
The invention will be further described below in conjunction with drawings and embodiments.
Fig. 1 is the plane graph of printed microstrip dipole antenna of the present invention.
Fig. 2 is the stereogram of printed microstrip dipole antenna of the present invention.
Fig. 3 is the experimental data figure of printed microstrip dipole antenna of the present invention.
Please consult Fig. 1 and Fig. 2 simultaneously, printed microstrip dipole antenna provided by the invention is made up of two dipole antennas, wherein first dipole antenna 1 places on the first surface 31 of printed circuit board (PCB) 3, second dipole antenna 2 places on the second surface 32 of printed circuit board (PCB) 3, it is orthogonal that this two dipole antenna spatially then is, and structure, shape and size are identical.Each dipole antenna is (because first and second dipole antenna 1,2 structures are identical, so below only describe with first dipole antenna 1) constitute by two doublet units 10,20 that are positioned at identical printed circuit board surface, aforementioned doublet unit 10 comprises a Port 11, the first arm 12 and second arm 13, Port 11 is at right angles trapezoidal, the first arm 12 is a rectangular patch, and the long limit 121 of the first arm is parallel to the right-angle side 113 of Port 11, and the minor face 122 of the first arm then is parallel to two bases 111 and 112 of Port 11.Second arm 13 is the trapezoidal pasters of isosceles, and the long limit 131 of second arm links to each other with the long limit 121 of the first arm, and the minor face 132 of second arm then with by the hypotenuse 114 of Port 11 links to each other with the oblique angle that long base 111 constitutes.
Doublet unit 20 comprises a Port 21, the 3rd arm 23 and the 4th arm 24, and wherein Port 21 is identical with Port 11 shapes, symmetrical configuration, and its two long bases, 111,211 conllinear divide between two right-angle sides 113 and 213 to be separated with a space.The 3rd arm 23 and the 4th arm 24 are rectangular patch, and the long limit 241 of the 4th arm is parallel with the long limit 121 of the first arm, and 242 of the minor faces of the 4th arm are parallel to two bases 211 and 212 of Port 21.The long base 111 of the long limit 231 of the 3rd arm and two Ports 11,21 and 211 conllinear, first minor face 232 of the 3rd arm links to each other with the long limit 241 of the 4th arm, second minor face 233 of the 3rd arm with link to each other with the oblique angle that long base 211 constitutes by the hypotenuse 214 of Port 21.
See also shown in Figure 2ly, two dipole antennas 1,2 are by coaxial radio- frequency cable 41 and 42 feeds.Wherein holding wire 411 in the coaxial radio-frequency cable 41 and peripheral covering thread 412 are welded on the Port 11 and 21 of first dipole antenna 1 (binding that second dipole antenna 2 and coaxial radio-frequency cable are 42 also with) respectively, and realize electrical engagement by two pads 51 and 52.In addition, coaxial radio-frequency cable 42 also is welded on the printed circuit board (PCB) first surface 31, by through hole in the printed circuit board (PCB) 60 (referring to Fig. 1) and the Port electrical engagement that places second dipole antenna on the printed circuit board (PCB) second surface 32.Port all is positioned at the side of printed circuit board (PCB), and the mode of this side feed can effectively reduce the influence that coaxial radio-frequency cable wiring path causes antenna.
Figure 3 shows that experimental data of the present invention is graphic, by among the figure as can be known, at frequency range 2.4-2.5GHz, no matter dipole antenna 1 or 2 all can reach the design specification requirement of voltage standing wave ratio VSWR＜2.0.
Because VSWR is a ratio of judging feed antenna energy under frequency, judge the characteristic of antenna under this frequency range in view of the above, and in general voltage standing wave(VSW) ratio is rationally greater than 1, industrywide standard (that is is only returned VSWR＜2.0 usually less than 10% energy reflection, all the other see through aerial radiation and go out) frequency band, be decided to be reasonable and effective frequency band range, so the antenna that Antenna Design person developed, under the requirement frequency range (as blue bud Bluetooth system, WLAN Wireless LAN, 2.4 ￣ 2.5GHz) must reach the scope of VSWR＜2.0.
So, two mutually perpendicular dipole antennas are set on same printed circuit board (PCB), and adopt the coaxial radio-frequency cable respectively to its feed, go into spatially vertical of mechanism and antenna bearingt by this double-fed, for electromagnetic wave signals different in the space, can cooperate the external control device to select and switch, with guarantee three radiator plane such as X-Y, X-Z, Y-Z in the space wherein both have preferable radiation effect.
Claims (15)
1. printed microstrip dipole antenna, be installed in the electronic installation, it comprises printed circuit board (PCB), first dipole antenna, second dipole antenna and feeder equipment, described printed circuit board (PCB) has first surface and second surface, it is characterized in that: above-mentioned two dipole antennas are orthogonal on the space, described first dipole antenna places on the first surface of printed circuit board (PCB), and described second dipole antenna places on the second surface of printed circuit board (PCB).
2. printed microstrip dipole antenna as claimed in claim 1 is characterized in that: described two dipole antennas are T type structure.
3. printed microstrip dipole antenna as claimed in claim 2 is characterized in that: each dipole antenna is made up of two doublet units, and described two doublet units are positioned on the same surface of printed circuit board (PCB).
4. printed microstrip dipole antenna as claimed in claim 3, it is characterized in that: one of them doublet unit is the paster that is made of the Port of one, the first arm and second arm, the paster that another doublet unit then is made of another Port, the 3rd arm and the 4th arm.
5. printed microstrip dipole antenna as claimed in claim 4 is characterized in that: the first arm of one of them doublet unit and second arm system are the T type and arrange setting, and the 3rd arm of another doublet unit and the 4th arm also constitute T type arrangement setting.
6. printed microstrip dipole antenna as claimed in claim 5 is characterized in that: the Port of described two doublet units is connected to the other end of second arm and the 3rd arm.
7. printed microstrip dipole antenna as claimed in claim 6 is characterized in that: two Ports of the first even antenna are provided with solder joint.
8. printed microstrip dipole antenna as claimed in claim 7, it is characterized in that: feeder equipment is the coaxial radio-frequency cable, and the coaxial radio-frequency cable of feed-in first dipole antenna by holding wire and covering thread respectively with two Ports of aforementioned first dipole antenna on solder joint be electrically connected.
9. printed microstrip dipole antenna as claimed in claim 8, it is characterized in that: the coaxial radio-frequency cable of feed-in second dipole antenna is welded on the first surface of printed circuit board (PCB), and is electrically connected with second dipole antenna that is positioned on the printed circuit board (PCB) second surface by the setting of through hole.
10. printed microstrip dipole antenna as claimed in claim 9 is characterized in that: the coaxial radio-frequency cable is from the feed-in of printed circuit board (PCB) side.
11. the feed method of a printed microstrip dipole antenna as claimed in claim 1 is characterized in that: it may further comprise the steps:
Place printed circuit board (PCB);
Two dipole antennas that have two Ports are respectively placed on the printed circuit board (PCB), and wherein first dipole antenna places the first surface of printed circuit board (PCB), and second dipole antenna places the second surface of printed circuit board (PCB), and above-mentioned two dipole antennas are orthogonal on the space;
Be provided with and the same number of coaxial radio-frequency cable of dipole antenna; And
The coaxial radio-frequency cable is connected respectively to two pairs of Ports, and wherein the holding wire of every coaxial radio-frequency cable and peripheral covering thread weld with a Port respectively, thereby realize the feed to two dipole antennas.
12. the feed method of printed microstrip dipole antenna as claimed in claim 11 is characterized in that: each dipole antenna is made up of two doublet units, and aforementioned two doublet units is installed in the same surface of printed circuit board (PCB).
13. feed method as claim 12 described printed microstrip dipole antennas, it is characterized in that: further two Ports of first dipole antenna are provided with solder joint, and the coaxial radio-frequency cable of feed-in first dipole antenna by holding wire and covering thread respectively with two Ports of aforementioned first idol and antenna on solder joint be electrically connected.
14. the feed method of printed microstrip dipole antenna as claimed in claim 13, it is characterized in that: the coaxial radio-frequency cable of feed-in second dipole antenna is welded on the first surface of printed circuit board (PCB), and is electrically connected with second dipole antenna that is positioned on the printed circuit board (PCB) second surface by the setting of through hole.
15. the feed method as claim 14 described printed microstrip dipole antennas is characterized in that: the coaxial radio-frequency cable is from the feed-in of printed circuit board (PCB) side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB001371266A CN1156940C (en) | 2000-12-31 | 2000-12-31 | Printed microstrip dipole antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB001371266A CN1156940C (en) | 2000-12-31 | 2000-12-31 | Printed microstrip dipole antenna |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1362754A CN1362754A (en) | 2002-08-07 |
| CN1156940C true CN1156940C (en) | 2004-07-07 |
Family
ID=4597676
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB001371266A Expired - Fee Related CN1156940C (en) | 2000-12-31 | 2000-12-31 | Printed microstrip dipole antenna |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1156940C (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1851981B (en) * | 2006-05-19 | 2010-08-18 | 东南大学 | Bidirectional multi-frequency integrated antenna |
| CN101673874B (en) * | 2009-10-13 | 2012-09-05 | 厦门大学 | Unsymmetrical double dipole antenna used for vehicle-mounted digital television |
| CN101931125A (en) * | 2010-02-10 | 2010-12-29 | 成都九洲迪飞科技有限责任公司 | Micro-strip dipole antenna with feed network |
| TWI506857B (en) * | 2012-12-14 | 2015-11-01 | Arcadyan Technology Corp | Printed antenna module applied to the rf detection procedure |
| CN103731774B (en) * | 2014-01-24 | 2017-07-14 | 青岛歌尔声学科技有限公司 | A kind of antenna of Bluetooth headset anti-interference method and bluetooth earphone |
-
2000
- 2000-12-31 CN CNB001371266A patent/CN1156940C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1362754A (en) | 2002-08-07 |
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| Date | Code | Title | Description |
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| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20040707 Termination date: 20100201 |