CN103311654B - For the antenna assembly of circuit board - Google Patents
For the antenna assembly of circuit board Download PDFInfo
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- CN103311654B CN103311654B CN201210056519.2A CN201210056519A CN103311654B CN 103311654 B CN103311654 B CN 103311654B CN 201210056519 A CN201210056519 A CN 201210056519A CN 103311654 B CN103311654 B CN 103311654B
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- radiator
- parasitic
- circuit board
- main
- main radiator
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Abstract
The disclosure relates to the antenna assembly for circuit board.Antenna for circuit board comprises a main radiator; And one first parasitic radiator, be adjacent to this main radiator, and along this main radiator long axis direction and establish.
Description
Technical field
This case is about Radio Transmission Technology, espespecially a kind of antenna be applied on circuit board.
Background technology
Relation between existing unipole antenna and circuit, that electromagenetic wave radiation is gone out with a whip type antenna by reflector in addition, but, whip type antenna is the bar-shaped or long strip type object protruding from electronic installation, the antenna of institute's device on mobile phone as before, router, modulator-demodulator, therefore be the structure quite accounting for volume, and easily damage, so under the miniaturized dual requirements succinct with external form, built-in antenna then becomes the main flow of most radio products, especially consumption electronic products now.
Referring to Fig. 1, is the radio device schematic diagram of prior art.Wherein disclose a circuit board 1, there is an electronic component region 10, a reflector 11 is then had in this region 10, and it is outer also with printed-board technology in this region 10, one main radiator 20, i.e. antenna are set on the circuit card 1, main radiator 20 is electrically connected with reflector by the circuit (not disclosing in figure) in circuit board 1, so electromagenetic wave radiation can be gone out.But, with the prior art of Fig. 1, because antenna 20 together arranges on the circuit card 1 with each electronic component in electronic component region 10, therefore very easily interfere with each other with each electronic component, and each electronic component also can hinder electromagnetic transmitting, the whip type antenna that therefore efficiency ratio is traditional is slightly poor.
Referring to Fig. 2, is the gain diagram of prior art.If due to the easy convergence of its profile design of the antenna not traditional whip type antenna being integrated in circuit board perfect, the gain diagram of Fig. 2 be with perpendicular to the axial plane of length of antenna for measurement plane, that is be the polar diagram that the center of circle plots with antenna.Therefore gain diagram as shown in Figure 2 can be clearly seen that, the antenna 20 of Fig. 1, start until 270 degree from 90 degree, its radiation intensity weakens and does not fix, such as with the user of radio modem, that can not enjoy after the good modulator-demodulator of his device that wireless transmission brings is convenient at once, contrary, he must adjust the attitude of modulator-demodulator often, so that allow electromagnetic wave radiant intensity preferably angle can aim at receiving system as notebook computer, but radio modem itself also must with wired mode connecting signal source, and also need the supply of power supply, therefore the adjustment of its attitude also can be subject to the restriction of all entity circuits.Moreover, need to use this radio modem in different positions if any the receiving systems of more than two, then application just becomes very inconvenience.And if radio modem is fixed on ceiling or metope, then also can not its attitude of arbitrary adjustment.Therefore, in order to solve the shortcoming of signal strength signal intensity inequality, technology existing at present setting about in shape all only at an independent antenna, but limited efficiency; Or make up by increasing superpower mode the problem that some angular intensities weakens, but cause the interference of the electronic installation to other outsides also, and compare power consumption.
Whence is event, and applicant, because the disappearance of prior art, invents this case " antenna assembly for circuit board ", in order to improve the disappearance of above-mentioned existing means.
Summary of the invention
The object of the invention is the uniformity in order to promote radio transmission, that is, receiver can be allowed can to receive intimate identical radio strength in each angle of polar coordinates perpendicular to the plane on length of antenna's direction of principal axis.Utilize the principle of parasitic circuit, two adjacent antennas are made to produce the contrary induced current in direction because of parasitic circuit principle, and then the gain making two antennas produce separately can be contained mutually, thus make one of them antenna produce stronger sense and just can make up the more weak direction of the signal of another antenna, so the radio signal strength in each direction generally speaking can be allowed to get a promotion, and intensity is also closely aligned.
In order to achieve the above object, the invention provides a kind of antenna assembly for circuit board, comprising: a circuit board, there is a transmitter unit; One main radiator, is electrically connected by a feeder line with this transmitter unit; One first parasitic radiator, is adjacent to this main radiator, first side that be arranged at this circuit board coaxial with this main radiator long axis direction; And one second parasitic radiator, second side that be arranged at this circuit board coaxial with this main radiator long axis direction, and the projection of this second parasitic radiator and this main radiator has overlapping.
In order to achieve the above object, the present invention reoffers a kind of antenna for circuit board, comprises a main radiator; One feeder line, is electrical connected this primary radiation and a feed-in signal; And one first parasitic radiator, be adjacent to this main radiator, and along this main radiator long axis direction and establish.
In order to achieve the above object, a kind of antenna for circuit board provided by the present invention, more comprise a ground structure, this ground structure and this main radiator are arranged at the first side of this circuit board, and this ground structure is around this main radiator, this first parasitic radiator and this second parasitic radiator in the projection of the first side, to isolate electronic component set on respectively this radiant body and this circuit board.
In order to achieve the above object, a kind of antenna for circuit board provided by the present invention, wherein this antenna is the edge arranging this circuit board contiguous, and arranges wherein without any assembly between this edge and this antenna.
In order to achieve the above object, the present invention more comprises a trixenie radiant body, is adjacent to this first parasitic radiator, and along this main radiator long axis direction and establish.
In order to achieve the above object, a kind of antenna for circuit board provided by the present invention, more comprise a ground structure, this ground structure is the side being arranged at this circuit board with this main radiator, and the projection of this ground structure around this main radiator, this first parasitic radiator and this second parasitic radiator in this first side and this trixenie radiant body, to isolate electronic component set on respectively this radiant body and this circuit board.
In order to achieve the above object, a kind of antenna for circuit board provided by the present invention, more comprise an impedance matching structure, this ground structure is provided with this impedance matching structure relative to the position of this main radiator.
In order to achieve the above object, this main radiator of the present invention more comprises an extended structure, and this extended structure has at least one bending and it is extended to this impedance matching structure along the direction away from this first parasitic radiator.
In order to achieve the above object, a kind of antenna for circuit board provided by the present invention, comprises a main radiator, provides one first gain; And one first parasitic radiator, be adjacent to this main radiator, and along this main radiator long axis direction and establish, provide one second gain, wherein overlap this first gain and this second gain and become a portfolio premium.
Accompanying drawing explanation
Fig. 1 is the radio device schematic diagram of prior art;
Fig. 2 is the gain diagram of prior art;
Fig. 3 is radio device schematic diagram of the present invention;
Fig. 4 is radio device other direction schematic diagram of the present invention; And
Fig. 5 is gain diagram of the present invention.
[primary clustering symbol description]
1: circuit board
1a: the first side
1b: the second side
10: electronic component region
11: reflector
2: antenna
20: main radiator
21: the first parasitic radiator
22: the second parasitic radiator
23: the trixenie radiant bodies
24: extended structure
3: ground structure
30: impedance matching structure
Embodiment
Each embodiment below for " antenna assembly for circuit board " of this case is described, please refer to accompanying drawing, but the configuration of reality and the method adopted must not meet described content completely, have the knack of this those skilled in the art when when not departing from practicalness and the scope of this case, many variations and amendment being made.
Refer to Fig. 3 and Fig. 4.Wherein Fig. 3 is radio device schematic diagram of the present invention, discloses the first 1a direction, side of circuit board 1; And Fig. 4 is radio device other direction schematic diagram of the present invention, disclose the second 1b direction, side of circuit board 1.Fig. 3 discloses circuit board 1 and has an electronic component region 10, a reflector 11 is provided with in electronic component region 10, be electrically connected by an existing feeder line (not disclosing in figure) with main radiator 20, by feeder line, feed-in signal delivered to main radiator 20.Because the gain intensity of single main radiator 20 is in fact also unequal, therefore, the present invention more arranges one first parasitic radiator 21 and is adjacent to main radiator 20, and the present embodiment to be both characteristic length identical, and between parasitic radiator 21 and main radiator 20, be the long axis direction arranged in co-axial alignment along main radiator 20.Be not electrically connected between parasitic radiator 21 with main radiator 20, but due to mutual vicinity, therefore have inductive effect between the two to produce, therefore, first parasitic radiator 21 also can emitting electromagnetic wave, but owing to being come from inductive effect, therefore, induced electromotive force direction on first parasitic radiator 21 is contrary with main radiator 20, so, the region of the intensity inequality that the first parasitic radiator 21 produces also just in time with the staggering of main radiator 20, thus both gain superpositions together, and become a new gain, therefore, although the respective intensity distributions of two radiant bodies is still uneven, but but can make up mutually.Therefore, the present invention really can reach and allow the uniform effect of electromagnetic intensity.
In addition, please continue to refer to Fig. 3, in order to avoid the interference that the various electronic component in each radiant body and electronic component region 10 is mutual, the present invention more arranges a ground structure 3 between electronic component region 10 and each radiant body, makes electromagnetic wave can change into electric current when touching ground structure 3 and guide to leave.In addition, in order to further strengthen the effect of ground structure 3, more on the ground structure 3 of ground structure 3 relative to the position of main radiator 20, be provided with an impedance matching structure 30, wide compared with remaining ground structure 3, to the interference in main radiator 20 pairs of electronic component regions 10 more effectively can be reduced.Moreover main radiator 20 also more comprises an extended structure 24, there is at least one bending 24a extended structure 24 is extended to impedance matching structure 3 along the direction away from the first parasitic radiator 21.The main radiator 20 of antenna assembly of the present invention designs the interference that more can effectively reduce in main radiator 20 pairs of electronic component regions 10 by the bending 24a of extended structure 24.
Refer to Fig. 4, electromagnetic intensity effect pockety can be made up mutually to strengthen further between radiant body, the present invention is at the back side of circuit board 1, namely the second 1b place, side is more provided with one second parasitic radiator 22, owing to having overlapping with the projection of main radiator 20, therefore also inductive effect can be produced, and then emitting electromagnetic wave, that is, with the embodiment of Fig. 3, namely the present invention has three radiant bodies, all there is the distribution of the radiation power of oneself separately, but but can each autoradiolysis strength distribution can be made up mutually superposition, and reach all directions and all have akin intensity, thus, radio device such as the user of radio modem just need not take a lot of trouble the attitude thinking adjustment radio modem again, moreover, if radio modem is fixed on ceiling or metope, the user such as notebook computer or flat computer also need not again automatic moving position to ask for best reception.
Please continue to refer to Fig. 3, in order to further allow radiation intensity evenly, circuit board 1 of the present invention is more provided with a trixenie radiant body 23, be adjacent to the first parasitic radiator 21 but be not electrically connected with it, and the present embodiment to be both characteristic length identical, and between trixenie radiant body 23 and the first parasitic radiator 21, be the long axis direction arranged in co-axial alignment along the first parasitic radiator 21.Due to both vicinities mutually, therefore have inductive effect between the two to produce, therefore, trixenie radiant body 23 also can emitting electromagnetic wave, but owing to being come from inductive effect, therefore, induced electromotive force direction on trixenie radiant body 23 is contrary with the first parasitic radiator 21, so, the region of the intensity inequality that trixenie radiant body 23 produces also just in time with the staggering of the first parasitic radiator 21, moreover, the region of the intensity inequality that trixenie radiant body 23 produces also just in time with the staggering of main radiator 20, therefore generally speaking, each parasitic radiator is together with the gain superposition of main radiator, and become a new gain, therefore, although the respective intensity distributions of each radiant body is still uneven, but but can make up mutually.Thus, the present invention to reach the distribution of electromagnetic wave radiant intensity more even.And from Fig. 3 and Fig. 4, main radiator 20, first parasitic radiator 21, second parasitic radiator 22, with trixenie radiant body 23, can synthesize an antenna 2 altogether, that is antenna 2 of the present invention is made up of with other one or more parasitic radiator a main radiator 20.
Referring to Fig. 5, is gain diagram of the present invention.The drafting of this figure is with the plane of the major axis axis perpendicular to each radiant body and based on polar coordinates.As can be seen here, present invention utilizes parasitic radiator, what gain can be distributed is more even, can reduce in the electromagnetic wave radiant intensity difference of all angles, i.e. all directions, compared with well very many of the prior art shown in Fig. 1.As can be seen here, the user applying radio modem of the present invention both need not adjust the attitude of radio modem, also need not adjust the position of oneself, just can receive the radio message that signal strength signal intensity is good.From above-mentioned Fig. 3 to Fig. 5, a kind of radio device for circuit board provided by the present invention, its concussion method is the gain being provided two different directions by Different Radiators, to reach the effect made up mutually, comprise and one first gain and one second gain are provided, and utilize and overlap this first gain and this second gain and become a portfolio premium.Wherein, it is provided by main radiator 20 that first gain can be used as, second gain then can be considered to be provided by first and second and trixenie radiant body (21,22,23), know by inference thus, as with the embodiment of Fig. 3 and Fig. 4, each radiant body all has respective gain and can overlap becomes a portfolio premium, and all directions radiation intensity reached as shown in Figure 5 is close to consistent effect.In addition, the generation due to the second gain is from inductive effect, the phase place of therefore the second gain just with the phase difference of the first gain apart from being approximately 180 degree.
In sum, the present invention's " antenna assembly for circuit board " is exactly the principle applying inductive effect, coaxial on the long axis direction of main radiator, the identical parasitic radiator of a characteristic length is set, thus, parasitic radiator is because inductive effect also can produce concussion and send electromagnetic wave, but owing to being because inductive effect, therefore its concussion direction, namely phase place differs 180 degree with the oscillation phase of main radiator haply, so though both respective radiation intensity distribution have uneven region, but because phase place is variant, therefore just in time can mutually make up, and then the electromagnetic intensity that each angle is given off can convergence consistent, even if also originally very poor angle direction becomes with the same good of other good angle of collecting mail.As long as so any radio device employs the present invention, such as radio modem, its user just need not adjust the attitude of modulator-demodulator again, if and this data meter is fixed on person on ceiling or metope, also do not need automatic moving to change the receiving position of receiving system as mobile computer or flat computer, because the radio modem employing the technology of the present invention can provide sufficient intensity and uniform radio signals to any angle, visible the present invention is for the radio device being applied to circuit board, be applied to the antenna of circuit board, and be applied to the concussion method of antenna of circuit board, all there is greatest contribution.
Above-described embodiment is only illustrate for convenience of description, executes craftsman's think of though appointed by those skilled in the art and modifies as all, so neither de-as attached claim institute wish Protector.
Claims (10)
1., for an antenna assembly for circuit board, comprising:
One circuit board, comprises one first side, and corresponding one second side parallel with this first side, and this first side is provided with a transmitter unit;
One main radiator, is arranged at this first side and is electrically connected to this transmitter unit, and this main radiator also comprises the extended structure of a tool bending;
One first parasitic radiator, is adjacent to this main radiator, this first side of being arranged at this circuit board coaxial with this main radiator long axis direction;
One second parasitic radiator, this second side of being arranged at this circuit board coaxial with this main radiator long axis direction; And
One impedance matching structure, between this transmitter unit and this main radiator, wherein this extended structure is through this bending and extends to this impedance matching structure with the direction away from this first parasitic radiator.
2. device as claimed in claim 1, more comprises a trixenie radiant body, is adjacent to this first parasitic radiator, coaxial and be positioned at this first side of this circuit board with this main radiator.
3. device as claimed in claim 1, wherein the projection of this second parasitic radiator and this main radiator has overlapping.
4. device as claimed in claim 1, more comprise a grounding assembly, contiguous and around this main radiator, this first parasitic radiator and this second parasitic radiator in the projection of this first side, with the electronic component set by isolating on this main radiator, this first parasitic radiator, the second parasitic radiator and this circuit board.
5., for an antenna for circuit board, comprising:
One main radiator, more comprises the extended structure that has bending;
One first parasitic radiator, is adjacent to this main radiator, and along this main radiator long axis direction and establish; And
One impedance matching structure, wherein this extended structure is through this bending and extends to this impedance matching structure with the direction away from this first parasitic radiator.
6. antenna as claimed in claim 5, more comprises a grounding assembly, contiguous around this main radiator, this first parasitic radiator, to isolate electronic component set on this main radiator, this first parasitic radiator and this circuit board.
7. antenna as claimed in claim 5, more comprise one second parasitic radiator, wherein this main radiator and this first parasitic radiator are positioned at the same side of a circuit board, this the second parasitic radiator is then positioned at the opposite side of this circuit board, and the projection of this second parasitic radiator and this main radiator has overlapping.
8., for an antenna for circuit board, comprising:
One main radiator, provides one first gain, and comprises the extended structure that has bending;
One first parasitic radiator, is adjacent to this main radiator, and along this main radiator long axis direction and establish, provide one second gain, wherein, this first gain overlaps mutually with this second gain and becomes a portfolio premium; And
One impedance matching structure, wherein this extended structure is through this bending and extends to this impedance matching structure with the direction away from this first parasitic radiator.
9. antenna as claimed in claim 8, wherein this first gain is from one first concussion direction, and this second gain is from one second concussion direction, and this first concussion direction second is shaken direction with this and differed 180 degree.
10. antenna as claimed in claim 8, more comprise one second parasitic radiator, wherein this main radiator and this first parasitic radiator are positioned at the same side of a circuit board, and this second parasitic radiator is positioned at the opposite side of this circuit board, and the projection of this second parasitic radiator and this main radiator has overlapping, wherein this second gain is then from this first parasitic radiator and this second parasitic radiator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210056519.2A CN103311654B (en) | 2012-03-06 | 2012-03-06 | For the antenna assembly of circuit board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210056519.2A CN103311654B (en) | 2012-03-06 | 2012-03-06 | For the antenna assembly of circuit board |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103311654A CN103311654A (en) | 2013-09-18 |
| CN103311654B true CN103311654B (en) | 2015-08-19 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210056519.2A Expired - Fee Related CN103311654B (en) | 2012-03-06 | 2012-03-06 | For the antenna assembly of circuit board |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103311654B (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101154764A (en) * | 2006-09-27 | 2008-04-02 | Lg电子株式会社 | Antenna assembly and portable terminal with the same |
| CN101501933A (en) * | 2006-06-30 | 2009-08-05 | 诺基亚公司 | Mechanically tunable antenna for communication devices |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI328314B (en) * | 2007-04-23 | 2010-08-01 | Univ Nat Taiwan | Antenna |
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2012
- 2012-03-06 CN CN201210056519.2A patent/CN103311654B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101501933A (en) * | 2006-06-30 | 2009-08-05 | 诺基亚公司 | Mechanically tunable antenna for communication devices |
| CN101154764A (en) * | 2006-09-27 | 2008-04-02 | Lg电子株式会社 | Antenna assembly and portable terminal with the same |
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| Publication number | Publication date |
|---|---|
| CN103311654A (en) | 2013-09-18 |
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Granted publication date: 20150819 Termination date: 20180306 |
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| CF01 | Termination of patent right due to non-payment of annual fee |