CN2416619Y - Communication antenna structure - Google Patents
Communication antenna structure Download PDFInfo
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- CN2416619Y CN2416619Y CN 00204696 CN00204696U CN2416619Y CN 2416619 Y CN2416619 Y CN 2416619Y CN 00204696 CN00204696 CN 00204696 CN 00204696 U CN00204696 U CN 00204696U CN 2416619 Y CN2416619 Y CN 2416619Y
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- antenna structure
- communication antenna
- flat part
- header board
- circuit substrate
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Abstract
The utility model relates to a communication antenna structure, which is used on a base station for radio communication and is used as a signal receiving and transmitting end between the base station and a plurality of movable terminal devices. The communication antenna structure comprises a grooving coupling micro-strip circuit base plate, a reflecting back plate and an antenna combination, wherein, the antenna assembly comprises a front plate which has a circular arc part and a flat plate part, and a plurality of rear plates. The purpose of increasing the half-power width of radiation on a horizontal surface can be attained according to the structure of the utility model.
Description
The utility model relates to a kind of communication antenna structure, particularly be applied to radio communication (Radio Communication) base station (Base Station, BS) antenna structure on, as the signal transmitting and receiving end between base station and movable terminal device (Mobile Termional), to increase horizontal plane radiation half-power beam width.
At present; mobile phone has become indispensable a kind of communication products in the information life; and the trend of more and more popularizing is arranged; mobile phone is similar to general telephone; use the both sides of mobile phone to send simultaneously, and be protection individual privacy, each mobile phone user; exclusive telephone number is all arranged, and the user then can call out required listener with code signal through base station.
Yet, present base station uses honeycomb fashion (cellular) Principle of Communication more, do not re-use high power transmitter, to contain region-wide broadcast mode, change to use numerous low-powered transmitter, disperse to be used for the zonule, be referred to as honeycomb (Cells), so, just need numerous cell, that is base station is guaranteed the quality and the scope of collecting mail, therefore, the transmitted power of base station, the level angle scope, range of vertical angles also becomes considerable parameter, accepts and the transmission scope if can reach with less antenna widely, can more meet economic benefit.
See also shown in Figure 1ly, be the perspective view of well-known antenna, its structure comprises:
One fluting coupling microstrip circuit substrate 20 be that dull and stereotyped and its back side that a low loss dielectric is constituted has microstripline 21 (Microstrip), and the front has slot 22 (Slot), and is connected to the signal source (not shown) by a lead 40;
One reflective back plane 30 (Reflector), it is a metal plate and places side after the fluting coupling microstrip circuit substrate 20 with non-electric conducting state that the electromagnetic wave that forces radiation backward is towards the place ahead radiation; And
One combination of antennas 10, be to be positioned at before the fluting coupling microstrip circuit substrate 20, and coupling microstrip circuit substrate 20 is non-electric conducting state with slotting, in order to increase the radiant power of electromagnetic wave, it comprises a header board 11a and a back plate 11b, all is parallel to fluting coupling microstrip circuit substrate 20, and header board 11a, back plate 11b all are connected with non-electric conducting state with fluting coupling microstrip circuit substrate 20, and back plate 11b area equates with header board 11a area, to strengthen irradiation of electromagnetic waves intensity.
By the above-mentioned signal that antenna structure sent, its horizontal emission angle theta 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 than the requirement of large-signal transmission with range of receiving.
The main purpose of the utility model is that a kind of communication antenna structure will be provided, be used for the radio communication base radio station, with as the signal transmitting and receiving end between base station and several movable terminal devices, and can reach the purpose that increases horizontal plane radiation half-power width according to its structure.
The another purpose of the utility model is to provide a kind of antenna structure, comprising combination of antennas, is used for aforesaid base station, and combination of antennas can make horizontal plane radiation half-power beam width reach 90 ° or higher purpose whereby.
According to communication antenna structure of the present utility model, wherein, for reaching the above purpose, the communication antenna structure includes a fluting coupling microstrip circuit substrate with a radiated electromagnetic wave and a reflective back plane, and combination of antennas 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 radiation half-power beam width of electromagnetic wave, its combination of antennas comprises:
One header board has one first flat part, second flat part and in order to connect the arc sections of first, second flat part, first, second flat part is copline and is electrically connected to arc sections; And
Several back plates are parallel to this first, second flat part, and are connected with non-electric conducting state with header board, and back plate area and header board projection equate in back plate area, with the enhancing electromagnetic wave radiant intensity.
Utilize the antenna structure of two flat boards in the traditional base station of the incompatible replacement of this antenna sets, can utilize the relation of this arc sections design, the angle change of emission is big, and reach more extensive reception and the purpose that transmits signal.
Describe preferred embodiment of the present utility model in detail below in conjunction with accompanying drawing.Wherein:
Fig. 1 is the perspective view of well-known antenna:
Fig. 2 is the perspective view of the utility model first embodiment;
Fig. 3 is the perspective view of the utility model second embodiment;
Fig. 4 is according to the utility model measured directivity pattern when the 880MHz;
Fig. 5 is according to the utility model measured directivity pattern when the 920MHz; And
Fig. 6 is according to the utility model measured directivity pattern when the 960MHz.
In general, parameter according to the designing antenna that range of application requires of antenna includes: frequency (frequency) scope, at the vertical plane (E-plane) of emission and the radiation half-power beam width (HPBW of horizontal plane (H-plane), Half-power Beamwidth), voltage standing wave(VSW) value (VSWR, Voltage standing wave Ratio), connector (Connector) form, and condition such as antenna gain (Antenna Gain) value, by the numerical value of revising these parameters, can design satisfactory antenna structure.
Stereochemical structure (with reference to figure 1) according to aforementioned well-known antenna, during the horizontal plane radiation half-power beam width desiring to reach bigger, we can dwindle the width of header board 11a and back plate 11b, but meet relevant specification for asking, as work bandwidth (Operation Bandwidth), backspace loss (ReturnLoss) and antenna gain (antenna Gain) etc., and can't arbitrarily dwindle the width of header board 11a and back plate 11b, so if desire increases horizontal plane radiation half-power beam width and reaches other relevant specifications, it is impossible but only relying on the width that dwindles header board 11a and back plate 11b, that is its certain limit is arranged.
At first, see also shown in Figure 2ly, be the first embodiment perspective view of communication antenna structure disclosed in the utility model, its structure comprises:
One fluting coupling microstrip circuit substrate 20a be that a flat board and its back side have microstripline 21a, and the front has slot 22a and mat has a lead 40a to be connected to the signal source (not shown) with radiated electromagnetic wave;
One reflective back plane 30a (Rdflector), it can be a metal plate, for example aluminium sheet or iron plate, or for plastic plate but have metal film (Metal Film) on it as Copper Foil (Copper Film) etc., and being positioned at the rear of fluting coupling microstrip circuit substrate 20a with non-electric conducting state, the electromagnetic wave that forces radiation backward is towards the place ahead radiation;
One combination of antennas 10a, be positioned at before the fluting coupling microstrip circuit substrate 20a, perhaps can comprise more combination of antennas 10a arranges to go here and there folded mode again, and 20a is non-electric conducting state with fluting coupling microstrip circuit substrate, in order to increase the radiation half-power beam width of electromagnetic wave, it includes a header board and a back plate 13 (Patch), wherein, header board is a miter guide (Director) in order to the electromagnetic wave outside radiation, it is made up of an arc 121 and 122 of flat boards, and the shape of arc 121 can be semicircular shape, and dull and stereotyped 122 have first flat part and second flat part, are both sides and the coplines that is positioned at arc 121, and wherein arc 121 is a status of electrically connecting with dull and stereotyped 122, can utilize as the mode of welding and finish, but its scolder is necessary for electric conducting material; Then plate 13, be parallel to dull and stereotyped 122, and be connected with non-electric conducting state with header board, and back plate 13 areas equate in back plate 13 areas with the header board projection, strengthening electromagnetic wave radiant intensity, but also can increase more back plate 13 gaining in strength, but generally speaking, with regard to the consideration on the cost, it is enough only to dispose a back plate 13.In addition, arc 121, dull and stereotyped 122 all can adopt the good material of aluminium (Al) or copper conductivity such as (Cu) made with back plate 13.
Wherein, the operation principle according to slot coupling microstrip circuit substrate 20a and reflective back plane 30a make up formed structure can be parsed into following three kinds:
One, microstrip antenna (Microstrip antenna) is the front end open circuit of microstripline 21a, and the one side of the dielectric medium substrate of microstripline 21a all is a conductor, is distributed with feeder line (Feed line) at another side.Wideer when a lot of than line width when the conductor surface below the substrate, then this kind conductor has and the unlimited identical effect of conductor that enlarges, and open end to the microstrip line section between slot can be used to produce imaginary impedance and uses for Antenna Impedance Matching;
Two, slot aerial (Slot antenna) leaves slot 22a, and slot 2 is used as antenna on flat board, goes out to connect high-frequency current slot 22a narrow, produce the electric field standing wave then gap 22a can produce resonance.Therefore, the effect of slot 22a is about to energy and passes toward it and go up dull and stereotyped (as plate 13 after the utility model) generation coupling, is the principle of the fluting coupling microstrip circuit substrate (Slot-coupled Stacked Microstrip Antenna) that the utility model utilizes; And
Three, the antenna of attached reflective back plane 30a, for irradiation of electromagnetic waves being concentrated on the specific direction in the place ahead, its the simplest gimmick 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 synthesizing of above-mentioned three kinds of principles, the signal that signal source transmitted can be seen through this antenna structure outwards sends, in addition, this combination of antennas 10a increases the beamwidth (Beamwidth) of dull and stereotyped 122 radiated electromagnetic waves that sent by arc 121, so horizontal plane radiation half-power beam width θ 1 can reach 90 °, perhaps relend by the circular arc degree of adjusting arc 121, or dull and stereotyped 122 protrude in the length of arc 121 parts, even can reach the effect of higher level surface radiation half-power beam width.
See also shown in Figure 3 again, perspective view for the utility model second embodiment, its similar is in first embodiment, but its discrepancy is that combination of antennas 10b partly, its header board is to utilize one-body molded mode to constitute, and also is an arc header board 14 and constitutes combination of antennas 10b with back plate 15.When configuration and use, all same principle is arranged with aforesaid first embodiment, and geometrical relationship therebetween and materials used etc., all can utilize the described condition of first embodiment, whereby, also can reach the purpose that increases horizontal plane radiation half-power width θ 1.
In addition, Fig. 4-6 be according to the utility model under the different operating frequency, measured antenna directivity figure, wherein, Fig. 4 is under frequency of operation 880MHz, the frequency range of measured its-3dB be 92.94 the degree, gaining is 9.4dBi; Fig. 5 is under frequency of operation 920 MHz, and the frequency range of measured its-3dB is 91.21 degree, and gaining is 9.04dBi; Fig. 6 is under frequency of operation 960MHz, and the frequency range of measured its-3dB is 92.47 degree, and gaining is 9.72dBi.
According to communication antenna structure disclosed in the utility model, its effect is: a kind of base station antenna is provided, can make horizontal plane radiation half-power beam width reach 90 ° or higher purpose, so that the wider reception and the angle of departure to be arranged, can not only be applied to the communication antenna of mobile phone, and can be applicable in all radio communications systems.
Though the utility model discloses as above with aforementioned preferred embodiment; yet; it is not in order to limit the utility model; anyly be familiar with those skilled in the art; in the spirit and scope that do not break away from the utility model; change and retouching when doing some, so the protection range of the utility model should be defined with the accompanying Claim scope and is as the criterion.
Claims (10)
1, a kind of communication antenna structure is used for the radio communication base radio station, and with as the signal transmitting and receiving end between this base station and several movable terminal devices, it comprises:
One fluting coupling microstrip circuit substrate is connected to signal source with radiated electromagnetic wave;
One reflective back plane is positioned at this fluting coupling microstrip circuit substrate side afterwards with non-electric conducting state, forces this electromagnetic wave towards the place ahead radiation;
One combination of antennas, be the string folded before this fluting coupling microstrip circuit substrate, and with this fluting coupling microstrip circuit substrate be non-electric conducting state, in order to increase the radiation half-power beam width of this electromagnetic wave, it comprises:
One header board has one first flat part, one second flat part and in order to be connected the arc sections between this first, second flat part, and this first, second flat part is copline and is electrically connected to this arc sections; And
Several back plates are to be parallel to this first, second flat part, and are connected with non-electric conducting state with this header board, and should equate in this back plate area with this header board projection by back plate area, to strengthen this electromagnetic wave radiant intensity.
2, communication antenna structure as claimed in claim 1 is characterized in that, this reflective back plane has metal film.
3, communication antenna structure as claimed in claim 2 is characterized in that, this metal film is a Copper Foil.
4, communication antenna structure as claimed in claim 1 is characterized in that, this reflective back plane is a metallic plate.
5, communication antenna structure as claimed in claim 4 is characterized in that, this reflective back plane is an aluminium sheet.
6, communication antenna structure as claimed in claim 4 is characterized in that, this reflective back plane is an iron plate.
7, communication antenna structure as claimed in claim 1 is characterized in that, this first flat part and second flat part are to belong to same metal plate, and this header board is to be connected composition with a metal arc with this metal plate.
8, communication antenna structure as claimed in claim 1 is characterized in that, this arc sections is a semi-circular shape.
9, communication antenna structure as claimed in claim 1 is characterized in that, the material of this header board and this back plate is an aluminium.
10, communication antenna structure as claimed in claim 1 is characterized in that, the material of this header board and this back plate is a copper.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00204696 CN2416619Y (en) | 2000-03-02 | 2000-03-02 | Communication antenna structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00204696 CN2416619Y (en) | 2000-03-02 | 2000-03-02 | Communication antenna structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2416619Y true CN2416619Y (en) | 2001-01-24 |
Family
ID=33573002
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00204696 Expired - Fee Related CN2416619Y (en) | 2000-03-02 | 2000-03-02 | Communication antenna structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2416619Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1324916C (en) * | 2002-09-12 | 2007-07-04 | Lg电子株式会社 | Active antenna system of radio communication terminal |
| CN106267511A (en) * | 2015-06-26 | 2017-01-04 | 北京谊安医疗系统股份有限公司 | A kind of active type electric control outlet valve |
-
2000
- 2000-03-02 CN CN 00204696 patent/CN2416619Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1324916C (en) * | 2002-09-12 | 2007-07-04 | Lg电子株式会社 | Active antenna system of radio communication terminal |
| CN106267511A (en) * | 2015-06-26 | 2017-01-04 | 北京谊安医疗系统股份有限公司 | A kind of active type electric control outlet valve |
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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 |