CN2494042Y - Fish bone shape plane board antenna structure - Google Patents
Fish bone shape plane board antenna structure Download PDFInfo
- Publication number
- CN2494042Y CN2494042Y CN 00232073 CN00232073U CN2494042Y CN 2494042 Y CN2494042 Y CN 2494042Y CN 00232073 CN00232073 CN 00232073 CN 00232073 U CN00232073 U CN 00232073U CN 2494042 Y CN2494042 Y CN 2494042Y
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- fishbone
- antenna structure
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- flat plate
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Abstract
Disclosed is a fish bone shaped panel antenna structure which is used to widen the horizontal radiation half power beam-wave of the aperture coupled microstrip panel antenna which contains a finite ground plane and a finite reflection back plane. The utility model alters the structure that the resonance rectangular plane is perpendicular to two end edges of the resonance shaft into a serrated shape so as to achieve the purpose of widening the horizontal half power beam-wave.
Description
The utility model relates to a kind of fishbone flat plate antenna structure, particularly is applied to the antenna structure on the radio communication base station, and it is as the signal receiving/transmission end between base station and movable terminal device, to increase horizontal plane radiation half-power beam width.
At present, mobile phone has become indispensable a kind of communication product in the information life, and the trend of more and more popularizing is arranged.Mobile phone is similar to general telephone, uses the both sides of mobile phone to send simultaneously, and is the protection individual privacy, and each mobile phone user has special telephone number, and the user then can call out required listener with code signal through base station.
Yet, present base station does not re-use high power transmitter and operates to contain region-wide broadcast mode, but use cell formula (Cellular) Principle of Communication more, change to use numerous low-powered transmitter, disperse to be used for the zonule, be referred to as cell, therefore, just need numerous cell, that is base station guarantees the quality and the scope of reception, so, the transmitted power of base station, the level angle scope, range of vertical angles also becomes considerable parameter, receive and the transmission scope if can reach with less antenna widely, will more meet the requirement of economic benefit.
As shown in Figure 1, be the perspective view of known rectangular flat antenna structure 10, its structure comprises:
One fluting coupling microstrip plate aerial 20, this plate aerial are that dull and stereotyped and its back side that a low loss dielectric is constituted has microstripline 21 (Microstrip), and the front has slot or slot 22, and are connected to signal source (not shown) by a lead 40;
One reflective back plane 30, it is a metal plate and places after the fluting coupling microstrip plate aerial 20 with non-electric conducting state, thus the electromagnetic wave that forces radiation backward is towards the place ahead radiation; And
One resonance is dull and stereotyped 11, and it is to be positioned at before the fluting coupling microstrip plate aerial 20, and with fluting coupling microstrip plate aerial 20 be non-electric conducting state, in order to increase electromagnetic directive property and work bandwidth.
By the above-mentioned signal that antenna structure sent, its horizontal plane half-power beam width θ only can be positioned at the scope at 60 °-70 ° at center, and maximum only can reach 80 °, therefore, if with regard to the rectangular flat structure, then can't reach the requirement of the big signal reception and the scope of transmission.
Main purpose of the present utility model provides the antenna structure of the dull and stereotyped resonance of a kind of fishbone, it is to be applied on the radio communication base station, as the signal receiving/transmission end between base station and a plurality of movable terminal device, and can reach the purpose that increases horizontal plane radiation half-power width according to this antenna structure.
According to fishbone flat plate antenna structure of the present utility model, it is to be applied on the radio communication base station, as the signal receiving/transmission end between this base station and a plurality of movable terminal device, this antenna structure comprises: a fluting coupling microstrip plate aerial, and it is connected to the signal source with radiated electromagnetic wave; One reflective back plane, it is positioned at the rear of described fluting coupling microstrip plate aerial with non-electric conducting state, thereby forces this electromagnetic wave towards the place ahead radiation; And one fishbone resonance dull and stereotyped, it blocks in the place ahead of described fluting coupling microstrip plate aerial, this fishbone resonance flat board is a straight fuel plate, form a plurality of sawtooth at this straight fuel plate edge, and this fishbone resonance is dull and stereotyped and described fluting coupling microstrip plate aerial is non-electric conducting state, in order to increase described irradiation of electromagnetic waves half-power beam width.
As from the foregoing, fishbone flat plate antenna structure of the present utility model, it comprises: a fluting coupling microstrip circuit substrate, a reflective back plane, and fishbone resonance dull and stereotyped.This fishbone resonance flat board is positioned at before the fluting coupling microstrip circuit substrate, and with fluting coupling microstrip circuit substrate be non-electric conducting state, in order to increase the irradiation of electromagnetic waves half-power beam width.This fishbone resonance flat board is straight fuel plate, form a plurality of sawtooth at straight fuel plate edge, therefore, utilize the dull and stereotyped dull and stereotyped antenna structure of rectangle resonance that replaces in traditional base station of this fishbone resonance, can utilize this serrations that the angle of emission is become big, thereby reach more extensive reception and the purpose that transmits signal.
According to fishbone flat plate antenna structure of the present utility model, the sawtooth of described fishbone resonance flat board is close especially in mid portion, and can decide operating frequency by the density of this sawtooth.
Below in conjunction with drawings and Examples content of the present utility model and technology are illustrated in greater detail:
Fig. 1 is the perspective view of known rectangular flat antenna;
Fig. 2 is the perspective view of fishbone plate aerial of the present utility model;
Fig. 3 A-Fig. 3 C is known rectangular flat antenna measured directivity pattern when the different operating frequency; And
Fig. 4 A-Fig. 4 C is fishbone plate aerial of the present utility model measured directivity pattern when the different operating frequency.
In general, parameter according to the designing antenna that range of application requires of antenna includes: the scope of operating frequency, at the vertical plane of emission and the radiation half-power beam width (HPBW of horizontal plane, Half-power Beamwidth), voltage standing wave(VSW) ratio (VSWR, Voltage StandingWave Ratio) and antenna gain value etc., by modification, can design and draw satisfactory antenna structure these parameter values.
According to the stereochemical structure (as shown in Figure 1) of aforementioned known plate aerial, desire the horizontal plane radiation half-power beam width that reaches bigger, we can dwindle the width of resonance dull and stereotyped 11.But in order to meet the requirement of relevant specification, requirement as work bandwidth, return loss and antenna gain etc., and can't arbitrarily dwindle the width of resonance dull and stereotyped 11, so if desire increases horizontal plane radiation half-power beam width and reaches the requirement of other relevant specifications, it is impossible only wanting to rely on the width that dwindles resonance dull and stereotyped 11, that is its certain limit is arranged.
At first, as shown in Figure 2, be the perspective view of fishbone flat plate antenna structure 10a of the present utility model, it comprises:
One fluting coupling microstrip plate aerial 20a, this fluting coupling microstrip plate aerial are that a flat board and its back side have microstripline 21a, and the front has fluting 22a, and it is connected to signal source (not shown) with radiated electromagnetic wave by a lead 40a;
One reflective back plane 30a, it can be a metal plate, for example aluminium sheet or iron plate, or be a plastic plate, but have metal film on it, and be positioned at the rear of fluting coupling microstrip plate aerial 20a, thereby the electromagnetic wave that forces radiation backward is towards the place ahead radiation with non-electric conducting state as Copper Foil etc.; And
One fishbone resonance flat board 12, it uses as sounding board.Known resonance writing board shape is a rectangle, and fishbone resonance dull and stereotyped 12 is a straight fuel plate, and it is formed with a plurality of sawtooth in the edges at two ends perpendicular to resonance.This fishbone resonance dull and stereotyped 12 can adopt the good materials of conductivity such as aluminium or copper to make.
As shown in the figure, the vertical shape of the dull and stereotyped edges at two ends of resonance axle is made engrail, can make half-power beam width increase about 5-10 degree effectively, dull and stereotyped 12 both sides of the edge inwardly are cut into the discontinuous shape of serrations and fishbone resonates, the size of its serrations is relevant with operating frequency, its density all changes with frequency, so serrations there is no fixed dimension.Moreover when antenna operates in resonance frequency, CURRENT DISTRIBUTION on the resonance flat board is maximum in the left and right edges of mid portion, if and the leakage current of these two edges is concentrated to the resonance axle more, just can effectively improve horizontal plane radiation half-power beam width more, so the sawtooth of fishbone resonance dull and stereotyped 12 especially designs closelyer in mid portion, and than the center resonance axle near fishbone resonance dull and stereotyped 12.
In addition, the operation principle according to slot coupling microstrip plate aerial 20a and reflective back plane 30a make up formed structure can be divided into following three kinds:
One, microstrip antenna, it is the front end open circuit of microstripline 21a, the one side of the dielectric medium substrate of microstripline 21a is a conductor all, is distributed with transmission line at another side.Wideer when a lot of than line width when the conductor surface below the substrate, then this kind conductor has the effect identical with the conductor of wireless expansion, and can utilize open end to the microstrip line section between slot to produce imaginary impedance for being complementary with antenna impedance;
Two, slot aerial, it opens slot 22a on flat board, get suitable length slot 22a is used as antenna, connects high-frequency current at the narrow place of slot 22a since produce the electric field standing wave then slot 22a can produce resonance.Therefore, the effect of slot 22a is about to the energy biography and produces coupling toward the flat board (as fishbone resonance dull and stereotyped 12 of the present utility model) on it, make dull and stereotyped to produce resonance, be the principle of the fluting coupling microstrip plate aerial 20a that the utility model utilizes with ground plate; And
Three, the antenna of subsidiary reflective back plane 30a, in order to reduce backward radiation and irradiation of electromagnetic waves to be concentrated on the specific direction in the place ahead, the simplest method is to settle reflective back plane 30a at the rear portion of antenna, if the size of reflective back plane 30a is bigger when a lot of than wavelength, can obtain bigger antenna gain or preferable directive property.When the size of reflective back plane 30a has in limited time, have the radiation backward of part electromagnetic wave, will no small influence be arranged to antenna gain.
Therefore, by above-mentioned three kinds of principles, the signal that the signal source can be transmitted sees through this fishbone resonance dull and stereotyped 12 and outwards sends, in addition, by the serrations shape of adjusting this fishbone resonance dull and stereotyped 12 and the geometry that is symmetrical in resonance axle both sides, even can reach better horizontal plane radiation half-power beam width effect.
Moreover Fig. 3 A-Fig. 3 C is known rectangular flat measured antenna directivity figure when the different operating frequency, wherein, as shown in Figure 3A under frequency of operation 1850MHz, measure it-and the frequency range of 3dB is 68 degree, gaining is 11.7dBi; Shown in Fig. 3 B, under frequency of operation 1920MHz, measure it-frequency range of 3dB is 67 degree, gaining is 11.5dBi; And be shown under the frequency of operation 1990MHz as Fig. 3 C, measuring it-frequency range of 3dB is 70 degree, gaining is 11.2dBi.
And Fig. 4 A-Fig. 4 C is fishbone communication antenna structure of the present utility model measured antenna directivity figure when the different operating frequency, wherein, shown in Fig. 4 A, under frequency of operation 1850MHz, measured its-frequency range of 3dB is 83.9 degree, gaining is 10.2dBi; Shown in Fig. 4 B, under frequency of operation 1920MHz, measure it-frequency range of 3dB is 85.2 degree, gaining is 10dBi; And shown in Fig. 4 C, under frequency of operation 1990MHz, measure it-and the frequency range of 3dB is 87.5 degree, gaining is 10.1dBi.
The experiment measuring numerical value of above-mentioned Fig. 3 A-Fig. 3 C and Fig. 4 A-Fig. 4 C is compared, under same operating frequency, can find out significantly fishbone flat plate antenna structure of the present utility model compare with the rectangular flat of known use increase approximately about 15 to 18 the degree scopes, so it has the effect of obvious increase horizontal plane radiation half-power width.
According to fishbone flat plate antenna structure of the present utility model, its effect is: a kind of base station antenna is provided, it can increase horizontal plane radiation half-power beam width, thereby the wider reception and the angle of departure are arranged, this fishbone flat plate antenna structure can not only be applied to the communication antenna of mobile phone, and can be applicable in all radio communication systems.
The above only is preferred embodiment of the present utility model; be not in order to limiting claim of the present utility model, any those of ordinary skill in the art are not in deviating from spirit and scope of the present utility model; any change and the retouching done all belong to protection range of the present utility model.
Claims (10)
1. a fishbone flat plate antenna structure is characterized in that, this antenna structure comprises:
One fluting coupling microstrip plate aerial, it is connected to the signal source;
One reflective back plane, it is positioned at the rear of described fluting coupling microstrip plate aerial with non-electric conducting state; And
The resonance of one fishbone is dull and stereotyped, it blocks in the place ahead of described fluting coupling microstrip plate aerial, this fishbone resonance flat board is a straight fuel plate, form a plurality of sawtooth at this straight fuel plate edge, and this fishbone resonance is dull and stereotyped and described fluting coupling microstrip plate aerial is non-electric conducting state.
2. according to the fishbone flat plate antenna structure of claim 1, it is characterized in that described reflective back plane has metal film.
3. according to the fishbone flat plate antenna structure of claim 2, it is characterized in that described metal film is a Copper Foil.
4. according to the fishbone flat plate antenna structure of claim 1, it is characterized in that described reflective back plane is a metallic plate.
5. according to the fishbone flat plate antenna structure of claim 4, it is characterized in that described reflective back plane is an aluminium sheet.
6. according to the fishbone flat plate antenna structure of claim 4, it is characterized in that described reflective back plane is an iron plate.
7. according to the fishbone flat plate antenna structure of claim 1, it is characterized in that the sawtooth of described fishbone resonance flat board is close especially in mid portion.
8. according to the fishbone flat plate antenna structure of claim 1, it is characterized in that the sawtooth of described fishbone resonance flat board is in the central shaft of mid portion than the flat board that resonates near this fishbone.
9. according to the fishbone flat plate antenna structure of claim 1, it is characterized in that the dull and stereotyped material of described fishbone resonance is an aluminium.
10. according to the fishbone flat plate antenna structure of claim 1, it is characterized in that the dull and stereotyped material of described fishbone resonance is a copper.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00232073 CN2494042Y (en) | 2000-03-24 | 2000-03-24 | Fish bone shape plane board antenna structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00232073 CN2494042Y (en) | 2000-03-24 | 2000-03-24 | Fish bone shape plane board antenna structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2494042Y true CN2494042Y (en) | 2002-05-29 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00232073 Expired - Fee Related CN2494042Y (en) | 2000-03-24 | 2000-03-24 | Fish bone shape plane board antenna structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2494042Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101098045B (en) * | 2006-06-28 | 2012-03-07 | 飞思卡尔半导体公司 | Stacked loop antenna |
| CN102394347A (en) * | 2011-07-01 | 2012-03-28 | 中兴通讯股份有限公司 | Antenna |
| CN102738563A (en) * | 2011-03-30 | 2012-10-17 | 恒进信息科技有限公司 | Ultra thin antenna |
-
2000
- 2000-03-24 CN CN 00232073 patent/CN2494042Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101098045B (en) * | 2006-06-28 | 2012-03-07 | 飞思卡尔半导体公司 | Stacked loop antenna |
| CN102738563A (en) * | 2011-03-30 | 2012-10-17 | 恒进信息科技有限公司 | Ultra thin antenna |
| CN102394347A (en) * | 2011-07-01 | 2012-03-28 | 中兴通讯股份有限公司 | Antenna |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |