CN2881991Y - Complementary phase regulation PCB antenna - Google Patents
Complementary phase regulation PCB antenna Download PDFInfo
- Publication number
- CN2881991Y CN2881991Y CN 200620069828 CN200620069828U CN2881991Y CN 2881991 Y CN2881991 Y CN 2881991Y CN 200620069828 CN200620069828 CN 200620069828 CN 200620069828 U CN200620069828 U CN 200620069828U CN 2881991 Y CN2881991 Y CN 2881991Y
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- antenna
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- pcb
- radiation
- phase modulation
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Abstract
The utility model provides a supplementary phase-modulating PCB antenna, which comprises a first antenna and a second antenna printed on the upper surface of a baseplate, and a symmetric third antenna and fourth antenna printed on the lower surface. The first antenna comprises a first radiation part and a second radiation part that are like straps and distributed in parallel way, as well as a connection part for communicating the first radiation part and the second radiation part. One end of the connection part is electrically communicated with a first through hole. The second antenna is centrally symmetric with the first antenna taking the first through hole as axial center, and a second hole is opened in the lower surface of the baseplate corresponding to the first through hole. The second through hole is electrically communicated with the first through hole, and the fed signals are grounded. The third antenna and the fourth antenna are arranged in reverse symmetric way taking the second through hole as the axial center, so as to be reversely symmetric with the first antenna and the second antenna. The utility model uses reversely symmetric antennas to receive signals with mini phase difference, can avoid loss in information, and can additionally filter stray signals by phase modulation.
Description
[technical field]
The relevant a kind of antenna of the utility model is meant a kind of signal with small phase difference and complementary type phase modulation PCB of good in anti-interference performance of receiving especially.
[background technology]
Along with the extensive use of WLAN (WLAN (wireless local area network)) at modern mobile office environment, the antenna that is installed on the portable communication apparatus is able to a large amount of uses, and the main flow wireless LAN communication agreement of Chan Shenging mainly comprises IEEE802.11b and two kinds of standards of IEEE802.11a thereupon, the main 2.4-2.5GHz of the working frequency range of IEEE802.11b wherein, and the working frequency range of IEEE802.11a is contained 5.15-5.35GHz.
Planar inverted F-shape antenna (Planar Inverted-F Antenna, PIFA) be a kind of miniaturization built-in aerial that is applicable to mobile terminals commonly used, at present, structure, the kind of planar inverted F-shape antenna are a lot, but owing to the fine difference between clock signal in the real work and the modulation signal, cause phase difference between signals, drop-out.
In view of this, being necessary to provide a kind of receives the signal with small phase difference in fact, and has the complementary type phase modulation PCB antenna of certain interference free performance.
[summary of the invention]
Therefore, the purpose of this utility model promptly provides a kind of complementary type phase modulation PCB antenna, can receive the signal with small phase difference, and have certain interference free performance.
For reaching above-mentioned purpose, the utility model provides a kind of complementary type phase modulation PCB antenna, this antenna comprises first antenna that is printed in the substrate upper face, second antenna, and the symmetrical third antenna that is printed in lower face, the 4th antenna, wherein, first antenna comprises first radiant section that is banded and parallel distribution, second Department of Radiation and the connecting portion that is communicated with above-mentioned first Department of Radiation and second Department of Radiation, and an end of this connecting portion electrically conduct first through hole and first Department of Radiation, second Department of Radiation works in IEEE802.11a and these two frequency ranges of IEEE802.11b respectively.Again, second antenna is that the axle center becomes the center symmetry with this first antenna with first through hole, and relative first through hole of second through hole is offered in the lower face of substrate, and this second through hole and first through hole electrically conduct and FD feed ground connection, in addition, third antenna, the 4th antenna are that the axle center is reverse symmetry and offers with the second base through hole, with first antenna, the second antenna reverse symmetry.
Compared with prior art, the utility model receives the signal with small phase difference with the antenna of reverse symmetry, avoids drop-out, and this structure reduces and disturbs because the phase modulated effect also can be filtered spurious signal.
[description of drawings]
Fig. 1 is the plane outspread drawing of complementary type phase modulation PCB antenna of the present utility model.
Fig. 2 is the schematic perspective view of the feeder line of complementary type phase modulation PCB antenna of the present utility model.
The voltage standing wave ratio curve that Fig. 3 measures when laying respectively at the 2.4GHz and the 5.2GHz left and right sides for complementary type phase modulation PCB antenna working frequency range of the present utility model.
[embodiment]
Consult Fig. 1, two square frames illustrate the floor map of complementary type phase modulation PCB antenna of the present utility model at PCB substrate upper and lower plates face respectively up and down, and two plate faces about this are folded the actual correspondence position that can be reduced to this antenna along middle line of symmetry.Wherein, hacures are depicted as that Copper Foil is printed in PCB substrate 40 two sides and the complementary type phase modulation PCB antenna that forms, this complementary type phase modulation PCB antenna comprises first through hole 30, first antenna 10, second antenna 20 that is positioned at substrate 40 upper faces, and second through hole 30 ', third antenna 10 ', the 4th antenna 20 ' that are positioned at substrate 40 lower faces.
Please continue to consult Fig. 1, in substrate 40 upper faces, first antenna 10 roughly becomes " F " type, comprise and be banded and first radiant section 11, second Department of Radiation 12 of parallel distribution and the connecting portion 13 that is communicated with above-mentioned first Department of Radiation 11 and second Department of Radiation 12, and an end of this connecting portion 13 electrically conduct first through hole 30 and these first through hole, 30 FD feed ground connection.In addition, this first Department of Radiation 11 is different with the length of second Department of Radiation 12, thus the frequency range difference of representing it to work.In present embodiment, the first short Department of Radiation 11 is operated in IEEE802.11a frequency range (5.15GHz-5.35GHz), the second long Department of Radiation 12 is operated in IEEE802.11b frequency range (2.4GHz-2.5GHz), thereby and agitate the 5GHz band signal by producing the resonance electric field between first Department of Radiation 11 and first through hole 30, thereby second Department of Radiation 12 also and produce the resonance electric field between first through hole 30 and agitate the 2.4GHz band signal.In addition, can realize this beamwidth of antenna, help increasing the bandwidth of operation of antenna like this by the width that changes first Department of Radiation 11, second Department of Radiation 12.
In addition, second antenna 20 is the 10 one-tenth center symmetries in axle center and this first antenna with first through hole 30, being one stands upside down " F " type, this first antenna 10 and the symmetrical structure of second antenna, 20 relative first through holes 30 can receive the have small phase difference signal of (as 1/4 wavelength), avoid drop-out, and this structure reduces and disturbs because the phase modulated effect also can be filtered spurious signal.
Center at the lower face of PCB substrate 40, be provided with second through hole 30 ' accordingly with first through hole 30 of upper face, and this second through hole 30 ' and first through hole 30 electrically conduct and FD feed ground connection, again, with this second base through hole 30 ' be the axle center be respectively equipped with two be the symmetry, and roughly be " F " third antenna 10 ', the 4th antenna 20 ' of type, with first antenna 10, second antenna, 20 reverse symmetry, to strengthen the directivity of this complementary type phase modulation PCB antenna.
In addition, see also Fig. 2, when use is of the present utility model, also need to connect a feeder line 50.Existing feeder line is the coaxial cable structure, comprises internal core wire 51 and shielding layer 52, and between internal core wire 51 and screen 52, and the outside of screen 52 all includes an insulating barrier.In present embodiment, an end of this screen 52 is electrically connected at first through hole 30, and the other end of this screen and the ground connection device on the communication terminal electrically connect; One end of above-mentioned internal core wire electrically is welded in above-mentioned first Department of Radiation 11, and the microwave receiving on the other end of internal core wire 51 and the communication terminal/ballistic device electrically connects.Simultaneously internal core wire 51 be welded in the position of first Department of Radiation 11 can be different and in very little scope, finely tune impedance with coupling PCB antenna according to the mechanism that reality is used, thereby can improve the effect of using this antenna structure.
Please refer to shown in Figure 3, for the voltage standing wave ratio of complementary type phase modulation PCB antenna of the present utility model is measured curve, in IEEE802.11b frequency range (2.4GHz-2.5GHz) and IEEE802.11a frequency range (5.15GHz-5.35GHz) scope, the value of the voltage standing wave ratio that records of complementary type phase modulation PCB antenna of the present utility model shows promptly that all less than 2 the working band of complementary type phase modulation PCB antenna of the present utility model is contained IEEE802.11a and substandard all frequency ranges of IEEE802.11b fully.
The complementary type phase modulation PCB antenna that the utility model provides compared with prior art has following good effect:
1, the utility model is the bandwidth of operation of this antenna of scalable by the size of the width of first Department of Radiation, second Department of Radiation, helps improving its bandwidth of operation like this.
2, pcb board can receive the signal with small phase difference with first, second antenna or the 3rd, the 4th antenna of offering symmetry on the one side, avoids drop-out, and this structure reduces and disturbs because the phase modulated effect also can be filtered spurious signal.
3, the perfecting of this pcb board is brushed with the antenna structure of symmetry, can strengthen the directivity of the transmission/reception wireless signal of this complementary type phase modulation PCB antenna.
Claims (6)
1, a kind of complementary type phase modulation PCB antenna, be printed in PCB substrate two sides and form by Copper Foil, it comprises first through hole, first antenna, second antenna that is positioned at the substrate upper face, and second through hole, third antenna, the 4th antenna that are positioned at the substrate lower face, it is characterized in that: first antenna comprises and is banded and first radiant section, second Department of Radiation of parallel distribution and the connecting portion that is communicated with above-mentioned first Department of Radiation and second Department of Radiation, and an end of this connecting portion first through hole that electrically conducts.
2, complementary type phase modulation PCB antenna as claimed in claim 1, it is characterized in that: it is 5.15GHz-5.35GHz that first Department of Radiation is operated in the IEEE802.11a frequency range.
3, complementary type phase modulation PCB antenna as claimed in claim 1, it is characterized in that: it is 2.4GHz-2.5GHz that second Department of Radiation is operated in the IEEE802.11b frequency range.
4, complementary type phase modulation PCB antenna as claimed in claim 1 is characterized in that: second antenna is that the axle center becomes the center symmetry with this first antenna with first through hole.
5, complementary type phase modulation PCB antenna as claimed in claim 1, it is characterized in that: relative first through hole of second through hole is offered in the lower face of substrate, and this second through hole and first through hole electrically conduct and FD feed ground connection.
6, complementary type phase modulation PCB antenna as claimed in claim 1 is characterized in that: third antenna, the 4th antenna are that the axle center is reverse symmetry and offers with the second base through hole, with first antenna, the second antenna reverse symmetry.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620069828 CN2881991Y (en) | 2006-03-02 | 2006-03-02 | Complementary phase regulation PCB antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620069828 CN2881991Y (en) | 2006-03-02 | 2006-03-02 | Complementary phase regulation PCB antenna |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2881991Y true CN2881991Y (en) | 2007-03-21 |
Family
ID=37881831
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620069828 Expired - Fee Related CN2881991Y (en) | 2006-03-02 | 2006-03-02 | Complementary phase regulation PCB antenna |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2881991Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102005642A (en) * | 2009-08-27 | 2011-04-06 | 德尔菲技术公司 | Antenna assembly |
-
2006
- 2006-03-02 CN CN 200620069828 patent/CN2881991Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102005642A (en) * | 2009-08-27 | 2011-04-06 | 德尔菲技术公司 | Antenna assembly |
| CN102005642B (en) * | 2009-08-27 | 2016-05-18 | 德尔福国际运营卢森堡有限公司 | Antenna assembly |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20070321 |