CN1591976A - Bipolarized antenna - Google Patents
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- CN1591976A CN1591976A CN 03155951 CN03155951A CN1591976A CN 1591976 A CN1591976 A CN 1591976A CN 03155951 CN03155951 CN 03155951 CN 03155951 A CN03155951 A CN 03155951A CN 1591976 A CN1591976 A CN 1591976A
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Abstract
A duplex polarization antenna includes a radiation array set on a reflection earth plate, four support conductors constituting two mutual vertical unbalanced transformers and supporting the radiation array on the reflection earth plate. The radiation array is formed by four equivalent conducting rings with symmetric lines and their heads and tails are connected, each forms a branch of the ring and a branch of a cross slot. The cross conductor has four symmetric lines, two of which belong to the conduction rings, the other two are the diagonal lines of cross conductors. The support conductors are connected to the diagonal lines of the earth plates and the cross conductors, the activated radiation array has two mutual vertical electromagnetic field owning vector E parallel to the diagonal.
Description
Technical field
The present invention relates to a kind of dipole antenna, more precisely, the present invention relates to emission or receive two orthogonal utmost points, as vertical and level ,+/-45 degree oblique angles, or two entelechies.In current these frequent epoch of using satellite broadcasting and mobile communication, people constantly increase the demand of the easy dual polarized antenna of this manufacturing.
Background technology
In the dual-polarization radiating unit system, people have dropped into sizable man power and material and have carried out extensive and deep research, existing several dipole antennas come out, but each all needs a large amount of parts basically, otherwise will produce such as defectives such as low acceptance rate or low frequency wave bands.In the prior art, for example: all described groove shape antenna and the chip aerial that is used to launch or receive two cross-pole in US4922263, EP0685900 A1, US6008763 and the US6018319 document.The slit of a radiation cross-like is all arranged on first metal earth plate of all these antennas, and a reflection earth plate is housed under this earth plate.Strip line between the earth plate is used for the activating radiation groove.Controller or so-called patch all are installed on the radius of most this class antenna.Sandwich construction in these antenna can carry out the capacitive character combination between electric feeder line and radiation fin.The greatest drawback of this antenna is the frequency band that it is narrow.
At US3740754, US5481272, US796372, US5952983 in US6028563 and the US6072439 document, has described and has used the right dipole antenna of crossed dipoles that is positioned on its earth plate.These file descriptions comprise the folded gates dipole, bowknot dipole and be furnished with the dipole of printed circuit board balun at interior several dipoles.These radiating curtains have 75-90 degree-3db lobe width, need 40-65 degree-3db lobe width and Geng Gao acceptance rate so they can not be used in.
The US5940044 document description a kind of two inclination utmost point antennas that nearly have 60 degree horizontal plane-3db lobe widths.This antenna has comprised the attached array of a plurality of dipoles, and each attached array is made up of the dipole of four diamond shaped.Wherein two dipoles in each attached array all tilt, with the long limit composition+miter angle of earth plate, to form the polarized radiation element arrays of one+miter angle.In addition, the long limit composition-miter angle of two dipoles and earth plate is to form the polarized radiation element arrays of one-miter angle.Arrange dipole like this and be in order to make+phase center of the dipole of miter angle is with one-element of miter angle can with align with a parallel vertical line of the long limit of earth plate.Other are+and the element of the phase center of the dipole of miter angle and being-miter angle aligns with an other vertical line.The major defect of this dipole square formation is the electricity feedback network of its complexity.For example, must use four cable electrode couple to carry out the electricity feedback.
EP0973231A2 and US6333720B1 patent documentation data that comprise other, that the radiating curtain of square formation type dipole is housed.The balun of these dipoles all is inclined to the center of dipole square formation, and to simplify production stage, however, these devices are still comparatively complicated.
The US6313809B1 document description a kind of bipolar radiant body, it comprises four dipoles, these dipoles are preferably to be arranged on the reflector, its top view is a dipole square formation.Fig. 1 has showed this dipole radiators.Each dipole all is to rely on a line of symmetry to carry out the electricity feedback.This line of symmetry has following characteristics: radiant body is in polarization+miter angle or-miter angle, carry out electric radiation to the dipole square formation of regulation structure.The tail end that leads to the line of symmetry of each dipole should couple together like this---and the two halves of corresponding feeder line adjacent, mutually perpendicular each dipole should be switched on mutually.The electricity feedback of the dipole two halves of right opposite is to realize by the mode that weakens (electromagnetic wave), has so just obtained first polarization, and has formed the 2nd polarization in right angle orientation.This device is compared with the square matrix-shaped radiant body of other known dipoles, has simpler electricity feedback network, although improvement like this has been arranged, this device is still comparatively complicated.The resistance ripple of dipole wherein is 75 ohm nearly, therefore, can not produce the off resonance phenomenon in order to make between dipole and the electric feed cable, is used for the resistance ripple that electrode couple carries out the line of symmetry of electricity feedback and should be 50-75 ohm.The resistance ripple is that the conductor of 75 ohm line of symmetry must be thick, and perhaps the distance between the conductor must be very little.Therefore, this radiant body is a kind of very heavy metal device, and has the extra non-conductor part that is used for the terminal mechanical connection of dipole.This radiant body can not be made with cheap light printed circuit board, because the distance that is used to make between the printed circuit board conductor of line of symmetry that the resistance ripple is 50-75 ohm can be very narrow.
The objective of the invention is to solve defective that prior art exists and not enough and dual-polarization radiating unit is provided.
Summary of the invention
From mentioned prior art, target of the present invention will be made a kind of dual polarised radiation body exactly, and the design of this radiant body is simple and easy, the acceptance rate height, have the 40-70 degree-3db lobe width and through decoupling between improved return loss and the two poles of the earth.
Most preferred embodiment provides a kind of dual polarized antenna, comprises the radiating curtain that is installed in reflection earth plate top and the conductor of four equivalences, and these conductors have been formed two vertical uneven horizontal transformers and radiating curtain is supported on the radiation earth plate.Radiating curtain is made up of the conductor loops of four equivalences, on these conductor loops line of symmetry is arranged, and their end all couples together in order to following method: radiating curtain is a staggered form, and contains the cross slit at crossing conductor.Each conductor loops is as intersecting a branch of body and a branch of cross slit.The top view of this cross radiating curtain is the quadruple symmetric figure.Article two, line of symmetry is the line of symmetry of conductor loops.The two other line of symmetry is the diagonal of intersection body.Supportive conductors is connected to earth plate and is positioned on the radiating curtain that intersects on the body diagonal, and is all separated by cross slit each other.Supportive conductors can be made with printed circuit board, and these circuit boards contain an electricity feedback and matching network, perhaps includes the electron tube of electric feed cable; Also the conductor of available other shapes is made, and for example, cross section is the conductor of U-shaped.In addition another selection can be arranged, radiating curtain and supportive conductors can be processed into by sheet metal.
First electricity feedback network is connected on article one diagonal of cross slit, and second electricity feedback network is connected on the second diagonal of cross slit.The radiating curtain of Ji Huoing carries out radiation with the form of two mutually perpendicular electromagnetic fields in this way, and the vector of these electromagnetic fields is E, and is set to intersect body diagonal parallel, shown in Fig. 4 a and Fig. 4 b.Same situation is applicable to the radiating curtain shown in Fig. 2 to 6.The present invention compares with existing solution, and the design of this dual polarized antenna is simpler and easy, because best radiating curtain can be made with a sheet metal or a printed circuit board.If supportive conductors can will be joined to one another with a sheet metal on the reflection earth plate, there is the conductor loops of some shapes just better return loss can be arranged so.Secondly, this dipole antenna has higher acceptance rate and narrower lobe width, because conductor loops can be bigger than dipole.For example, radiating curtain is made up of the conductor loops that is diamond shaped, and the transition symmetry line is arranged on these conductor loops, and the lobe widths of 45 degree are nearly arranged, as shown in Figure 5.One side of one side of diamond shaped array and transition symmetry line all nearly equates with 1/4th of wavelength.Therefore, pass crossing conductor apart from longer than the length of wavelength.In addition, the present invention compares with existing solution, dual polarized antenna has improved return loss or has had wideer frequency band, because after having used best radiant body, can there be more space to put matching network, also can more freely changes the resistance of radiation circle by the shape that changes the conductor loops array.
Dual polarized antenna of the present invention has improved weakening between the two poles of the earth, because best radiant body can be used as a self-sustaining framework, this framework can be by using as laser cutting, and accurate technique such as etching or punching are made.
Dual polarized antenna of the present invention is applicable to the design of pedestal aerial array, and the lobe width on the horizontal plane of this array is the 40-70 degree.
Description of drawings
Fig. 1 illustrates dipole radiators of the prior art (US6313809B1), has wherein showed the top view of dipole square formation, and has illustrated each dipole and all carried out the electricity feedback by a line of symmetry.
Fig. 2 illustrates the top view of radiating curtain of the present invention, has showed that wherein the conductor loops on each cross slit all is a triangle.
Fig. 3 is according to this invention, and this is the top view of radiating curtain, has showed that wherein the conductor loops on each cross slit all is a diamond shaped.
Fig. 4 a and 4b are the top views of radiating curtain of the present invention, have showed that wherein the conductor loops on the cross slit is a triangle all, and have contained a transition symmetry line, and this line of symmetry is connected on the end of conductor loops.
Fig. 5 is the top view of radiating curtain, has showed that wherein the conductor loops on the cross slit is a diamond shaped all, and has contained a transition symmetry line, and this line of symmetry is connected on the end of conductor loops.
Fig. 6 is the top view of radiating curtain, has showed that wherein the conductor loops on each cross slit all is a T shape.
Fig. 7 a is the top view of dual polarized antenna, has showed that wherein supportive conductors is exactly the electron tube that includes electric feed cable.
Fig. 7 b is the side view of dipole antenna, has showed that wherein supportive conductors is exactly the electron tube that includes electric feed cable.
Fig. 7 c is that dual polarized antenna intersects cornerwise cross-sectional view, has showed that wherein supportive conductors is exactly the electron tube that includes electric feed cable.
Fig. 8 is the end view of dual polarized antenna, and the side of wherein having showed supportive conductors is a U-shaped, and will be joined to one another by a slice conductive metal sheet on the reflection earth plate.
Fig. 9 a is the top view of dual polarized antenna, has showed that wherein radiating curtain and supportive conductors all are printed circuit boards.
Fig. 9 b is the end view of dual polarized antenna, has showed that wherein radiating curtain and supportive conductors all are printed circuit boards.
Figure 10 a to 10d is the front view and the rearview of the printed circuit board of the dual polarized antenna shown in Fig. 9 a and the 9b, has showed that wherein electricity is presented strip line to be welded on the radiation appliance.
Figure 11 a and 11b are the front views of the another kind of embodiment of dual polarized antenna, have wherein described electricity is presented the strip line electric welding to receive on the radiating curtain.
Figure 12 a is the top view of dual polarized antenna, has wherein described radiating curtain and supportive conductors processes on sheet metal.
Figure 12 b is the top view of dual polarized antenna, has wherein described radiating curtain and supportive conductors is processed by sheet metal.
Figure 13 is the plan view of radiating curtain and supportive conductors, shown supportive conductors be make by sheet metal and be straight.
Figure 14 is the rearview of the printed circuit board shown in Figure 12 a.
The top view wiring diagram of Figure 15 array that to be shown in Fig. 9 a and the 9b be made up of four+/-45 degree inclination utmost point antennas.
Embodiment
Existing accompanying drawings embodiments of the invention.In order to illustrate the difference of this invention and known bipolar radiant body, in figure .1., showed this radiant body, this known antenna includes four dipole 1-4, and four dipoles are preferably is arranged on the reflector 5 for this, and its framework top view is a dipole square formation.Dipole 1-4 carries out the electricity feedback by line of symmetry 6-9, and first end of line of symmetry is connected with dipole 1-4 and switches on, and second end is connected with the 10-13 end of two baluns and switches on.Not (in Fig. 1, not the showing) that the electric bridge 14 and 15 that the feedback of the electricity of horizontal two dipole half blocks that face toward is a coaxial cable by little pin sample transmits.First end of these electric bridges is connected to the end 10 and 13 of balun, and energising.In their second terminal 16 and 17 hole that is placed near balun terminal 11 and 12.The inner wire of coaxial cable is connected on the electric bridge terminal 16 and 17 and energising.The outer conductor of coaxial cable is connected near terminal 11 and 12 place and the energisings of balun.
Therefore, the radiating curtain of prior art is a dipole square formation, this square formation is carried out the electricity feedback by four line of symmetries, and these four line of symmetries carry out the electricity feedback by two non-symmetric lines, the radiating curtain of best dipole antenna have in being the cross slit crossing conductor, this crossing conductor carries out electricity by two non-symmetric lines and presents.
Dipole antenna mentioned above contains the cross slit, but the cross slit of known antenna is made on a slice conductor metal sheet, and be installed between radiation fin and the close reflection earth plate of earth plate, the cross slit of best dipole antenna is made up of conductor loops, and be installed on the earth plate, distance is quarter-wave nearly.
According to the best invention, several demonstration forms of dipole antenna show to some extent in Fig. 2-11 that all these demonstration forms all have difform radiating curtain and balun.
Figure .2 has showed the top view of the radiating curtain that triangle conductor loops array is housed, 21-24 wherein is the branch of crossing conductor, 25-28 is the branch of cross slit, and dotted portion is the line of symmetry of crossing conductor, and is identical with the line of symmetry of cross slit in the conductor loops.
Figure .3 has showed the top view of the radiating curtain that diamond shaped conductor loops array is housed, and 31-34 wherein is the branch of conductor loops, and 35-38 is the branch of cross slit.
The top view of having showed a kind of radiating curtain among Fig. 4 a and the 4b, the conductor loops of wherein having showed each cross slit is a triangle, and each conductor loops all contains a transition symmetry line, this line of symmetry is connected to the end at each angle of triangle conductor loops, 41-44 is the branch of crossing conductor, 45-48 is the branch of cross slit, and 18,19,49,50 is the transition symmetry line.In figure .4a, article one electricity feeder line and balun thereof are connected to left top, and the right bottom corners of crossing conductor is put on "+" and "-".In Fig. 4 b, second electricity feeder line and balun thereof are connected to left top, and the right bottom corners of crossing conductor is put on "+" and "-".In figure .4a, big arrow represents+45 degree, by the polarization of electromagnetic field that the first electric feeder line activates, small arrow is represented sense of current, these electric currents are that article one electricity feeder line by crossing conductor activates.In Fig. 4 b, big arrow is represented the polarization of electromagnetic field-45 degree, that activated by second electricity feeder line, small arrow is represented sense of current, these electric currents are to be activated by the electric feeder line of the second of crossing conductor, because crossing conductor has line of symmetry, as scheme among the .4a shown in the dotted line, the voltage that is flow through crossing conductor top, a left side and right bottom corners by article one electricity feeder line is zero volt.Therefore, article one, the electricity feeder line can not activate second electricity feeder line, because crossing conductor has line of symmetry, shown in dotted line among Fig. 4 b, the voltage that is flow through right top and left bottom corners by second electricity feeder line is zero volt, therefore, the second electric feeder line can not activate the first electric feeder line, so the radiation mode of the radiating curtain of Ji Huoing is two mutually perpendicular electromagnetic fields that decouple in this way, the vector of these two electromagnetic fields (vector) is E, and is set to intersect diagonal parallel.
Fig. 5 has showed a kind of top view of radiating curtain, the conductor loops of wherein having showed each cross slit is a diamond shaped, and each conductor loops all contains a transition symmetry line, this line of symmetry is connected to the end at each angle of diamond shaped conductor loops, 51-54 is the branch of crossing conductor, 55-58 is the branch of cross slit, and 59,60,69,70 is the transition symmetry line.
Fig. 6 has showed a kind of top view of radiating curtain, and the conductor loops of wherein having showed the cross slit is the T font, and 61-64 is a conductor loops, and 65-68 is the branch of cross slit.Electricity feeder line and balun thereof are connected on the radiating curtain, as shown in Figure 2.
The position that Fig. 3, Fig. 5 are identical with Fig. 4 b with Fig. 6 and Fig. 4 a all put on "+" and ".
This radiating curtain provides condition for the antenna of creating a series, and the lobe width of the antenna that this is serial can reach 40 to 70 degree.The radiating curtain of in Fig. 2 and Fig. 6, showing can produce lobe width for nearly 60 to 70 the degree electric waves.The radiating curtain of in Fig. 3 and Fig. 4, showing can produce lobe width for nearly 50 to 60 the degree electric wave..The radiating curtain of showing at Fig. 5 can produce lobe width and be the electric waves of 40 to 50 degree nearly.The optimum shape of conductor loops depends on suitable lobe width, operation frequency and electric feeder resistances.Therefore, according to this invention, with Fig. 2 with shown in Fig. 6 radiating curtain compare, this radiating curtain can be installed the conductor loops of other shapes.For example, be 65 degree at the design lobe width, the operation frequency wave band is 15-30%, electric feeder resistances is that we find that the shape of radiating curtain should be as shown in figure .7-Figure 15 in 50 ohm the process of dipole antenna.The conductor loops of these radiating curtains can be the T font or has the triangle of a transition symmetry line, and the resistance of this line of symmetry is variable.
In the explanation about another antenna, the transition symmetry line can be a phase step type, to obtain optimum Match.
Fig. 7-13 has showed the embodiment of several supportive conductors, and these supportive conductors play the effect of balun in best dipole antenna.
Fig. 7 a-Fig. 7 c has showed first embodiment of a dipole antenna, and supportive conductors wherein is the electron tube that includes electric feed cable.In these exploded views, crossing conductor 71 usefulness sheet metals are made, and 72 is the cross slit.73 to 76 for being connected to crossing conductor 71 in the electron tube on the reflection earth plate 79, and these electron tubes can play the effect of balun.77 and 78 for being connected to the inner wire 80 and 89 of coaxial electrical feed cable in the electric wire on electron tube 75 and 76.All parts of this antenna are all made with brass, and will be joined to one another with welding method.
On reflection substrate, second embodiment of dual polarized antenna that comprises the conductor 87 of mutual short circuit supportive conductors is shown among Fig. 8.Wherein horizontal conductor 81 is to be made by sheet metal, the 82nd, and cross bath.Cross section is that the conductor 83-86 of U font is connected to crossing conductor 81 on the reflective metal flakes 88, and can play the effect of balun.All parts of this antenna are all made with brass, and will be joined to one another with welding method.Article one, coaxial electrical feed cable must be installed between this conductor and the sidebar along the U-shaped conductor.Article one, the inner wire of coaxial cable is connected to its opposite, is positioned on the conductor 83 on the crossing conductor 81.Therefore, electric feeder line in this embodiment activates crossing conductor 81 by same method, just as the crossing conductor among first embodiment 71.Short-circuit conductor 87 can change the resistance of balun, and can play the effect of match circuit.
Crossing conductor and supportive conductors in the 3rd embodiment of dipole antenna are all made with printed circuit board, as shown in figure .9a and figure .9b, wherein 91 for being imprinted on crossing conductor on the pedestal 97,92 is the cross slit.Pedestal 101 and 102 they wherein on the one side printed conductor is housed, this conductor plays the effect of balun, and the electricity feedback strip line that contains matching network is housed on the another side.The two sides of having showed pedestal among Figure 10 a-10d, pedestal 101 contains reflector 93 and 95, these reflectors are positioned at top margin, and reflector 103 and 105 is positioned at the base, and pedestal 102 contains reflector 94 and 96, these reflectors are positioned at top margin, reflector 104 and 106 is positioned at the base, and reflector 93-96 is installed on the rectangular opening of pedestal 97, as shown in Fig. 9 a, reflector 103-106 is installed on the rectangular opening of reflection earth plate 98, and is soldered on the earth plate.The first electric feeder line 100 is installed on the one side of pedestal 101, and should contain match circuit 111 and electric bridge 112 by the electricity feeder line.The electric bridge end that will be placed on the reflector 93 with solder stick 99 is welded on the crossing conductor 91, the conductor 107 and 108 that plays the balun effect in the first electric feeder line 100 is installed on the other one side of pedestal 101, and with solder stick 90 it is welded on the crossing conductor 91 on reflector 93 and 95.The second electric feeder line 113 is installed on the pedestal 102, and contains match circuit 114 and electric bridge 115.The electric bridge end that will be placed on the reflector 96 with solder stick 99 is welded on the crossing conductor 91, the conductor 109 and 110 that plays the balun effect in the second electric feeder line 113 is placed on the another side of pedestal 102, and with solder stick 90 with they be welded to be installed on reflector 94 and 96 crossing conductor 91 on, in the assembling antenna, pedestal 102 is placed on the slit 104 of pedestal 101.
The demonstration form of having showed the another one electric bridge among figure .11a and the 11b, wherein, the end of electric bridge 112 is connected to be with on 116, and electric bridge 115 is connected to be with on 117.These belts all are the waveguide short-circuit lines that opens wide, and these circuits are connected to electric bridge 112 and 115 on conductor 107 and 109 accordingly.If 1/4th of the wavelength that the electricity of these waveguide short-circuit lines long (the waveguide Route Length multiply by the retardation coefficient of the micro strip lines of forming the waveguide short-circuit line) goes out less than aerial radiation, these circuits just can produce the capacitive character combination so; Equal 1/4th of wavelength if electricity is long, will produce short circuit.
In the 4th embodiment of dipole antenna, crossing conductor 121 and conductor 123 are supported on crossing conductor 121 on the reflection earth plate 125, and play the effect of the balun of being made by a sheet metal, as. shown in Figure 12 a and the 12b.At this, 122 is the cross slit.The bent back ends 124 of conductor 123 is placed in reflection ground plate 125, and connects with button nail 139.
Figure has showed among the .13 with one packagedly has a supportive conductors, the supportive conductors that straight sheet metal is made and the top view of radiating curtain, aperture 138 is established for button nail 139 specially, the button nail is used for radiating curtain is fixed to its relevant position at reflection ground plate 125, and dotted portion is the curve of conductor 123.
This antenna contains non-conductor pedestal 126, and this pedestal is positioned on the crossing conductor 121, and at its each face the printing track is arranged all.Strip line 127 and 128 is placed on the end face of pedestal 126, as scheme as shown in the .12a, first end of strip line 127 is connected on the inner wire 131 of article one coaxial cable 133, second end of strip line 127 is connected to by electric bridge 150 on the unlimited waveguide short-circuit line 129 on the wherein one side that is installed in cross slit 122, combines with generation capacitive character between second terminal and the crossing conductor 121 of strip line 127.First end of strip line 128 is connected on the inner wire 132 of second coaxial cable 134.Second end of strip line 128 is connected to by electric bridge 135 on the unlimited waveguide short-circuit line 130 that is installed on cross slit 122 another sides, combines with generation capacitive character between second terminal and the crossing conductor 121 of strip line 128.
Figure 14 has showed the bottom surface of pedestal 126, and conductor 141 and 142 is placed on this bottom surface, and is separated by slit 140 each other.Conductor 141 is placed in the opposite of strip line 127, and conductor 142 is placed in the opposite of strip line 128.Dead ring 145 and 146 be arranged in aperture 143 and 144 around.Electricity feeder line 133 and 134 inner wire 131 and 132 end are placed on aperture 143 and 144, and electric feeder line 133 and 134 outer conductor are welded on the conductor 141 and 142 that is arranged on around non-conductor ring 145 and 146.When insulating base 126 is placed in crossing conductor 121 tops, conductor 141 and 142 can produce capacitive character with crossing conductor 121 and combine, this combination can be undertaken by the method that conductor 141 and 142 is directly connected on the crossing conductor 121, also can use a dielectric film if necessary, to avoid producing passive intermodulation because of the direct contact of two metal partss.
Therefore, the first electric feed cable 133 passes through strip line 127 and conductor 141 activation crossing conductors 121 and cross slit 122, the second electric feed cables 134 by strip line 128 and conductor 142 activation crossing conductor 121 and cross slits 122.
The radiating curtain and the ground plate of this antenna all are formed from aluminium, and couple together with button nail 138.For fear of because of metal parts directly contacts the passive intermodulation that produces, should between crossing conductor 121 and conductor 141 and 142, place a slice plastic film 136.Another sheet plastic film 137 is placed between the bent back ends 124 and reflection ground plate 125 of conductor 123.Button nail 138 shown in Figure 12 a and the 12b is made of plastic.
Figure 15 showed according to this invention running, by four antennas forms+/-45 spend the distribution top view of the aerial array of the inclination utmost points.Radiating curtain 151-154 is the thin electric conductor that is placed on the pedestal 155-158, and shown in Fig. 9 a and 9b, the abutment wall 160 and 161 along lay on the long limit of reflection ground plate 159 is used to regulate mechanical dynamics and lobe width..The abutment wall of laying along the minor face of reflection ground plate 159 162 and 163 is placed between the radiating curtain 151-154 with abutment wall 164-166, to improve the insulation between this aerial array+45 degree inclination utmost points and-45 degree inclination utmost points.
According to the present invention, the sample that existing several lobe widths are the dipole antenna of 65 degree is devised, and these samples are applicable to that in the situation of 800-960MHz frequency band, other sample then is used in the situation of 1700-2170MHz frequency band.Insulativity between each utmost point of all samples is all greater than 34dB, and return loss all is better than 20dB.Basic invention, these antenna can be designed in other the frequency band.
One by four antennas form+samples of the poliarizing antenna array that/-45 degree tilt shown in figure .15, be under the situation of 1700-2170MHz at frequency band, the insulation rate between its each utmost point is better than 32dB.
When using embodiment to illustrate the present invention, and embodiment described in this article in detail, and the applicant thinks in the specification and not constitute the restriction to claims about the detailed description of the embodiment of the invention.Therefore, the related scope of this invention is not limited to these specific details, representational device and example.In fact, these changes or the change do not break away from the applicant common invention spirit and scope.
Claims (30)
1. dual polarized antenna, comprise: one is placed in a radiating curtain on the reflection ground plate, four supportive conductors, these conductors have been formed two vertical baluns, and with a radiating curtain be supported on the reflection ground plate on, wherein, a radiating curtain is made up of the conductor loops of four equivalences, these conductor loops have line of symmetry, and be joined to one another in this mode, be that radiating curtain is a cross-like, and in inferior array, include a cross slit, each conductor loops constitutes a branch of crossing conductor and a branch of cross slit, crossing conductor has four line of symmetries, article two, be the line of symmetry of conductor loops, two other is the diagonal of crossing conductor, supportive conductors is connected on the diagonal of ground plate and crossing conductor, first electricity feedback network is connected on the crossing conductor, pass on article one diagonal of cross slit, second electricity feedback network is connected on the crossing conductor, passes on the second diagonal of cross slit, and radiating curtain is activated in this way, its radiation mode is two mutually perpendicular electromagnetic fields, and this electromagnetic field has and is set the E vector parallel with the crossing conductor diagonal.
2. according to the described dual polarized antenna of claim 1, wherein the conductor loops of radiating curtain is a triangle.
3. according to the described dual polarized antenna of claim 1, wherein the conductor loops of radiating curtain is a diamond shaped.
4. according to the described dual polarized antenna of claim 1, wherein according to the described dual polarized antenna of claim 1, wherein the conductor loops of radiating curtain includes one group of transition symmetry line.
5. according to the described dual polarized antenna of claim 1, wherein the conductor loops of radiating curtain is a triangle, and includes one group of transition symmetry line.
6. according to the described dual polarized antenna of claim 1, wherein the conductor loops of radiating curtain is a diamond shaped, and contains one group of transition symmetry line.
7. according to the described dual polarized antenna of claim 1, wherein the conductor loops of radiating curtain is the T font.
8. according to claim 1,4, one of 5 or 6 described dual polarized antennas, wherein the distinctive impedance of transition symmetry line is variable.
9. according to claim 1,4, one of 5 or 6 described dual polarized antennas, transition symmetry line wherein is made up of the transition symmetry line that has the different qualities impedance.
10. according to the described dual polarized antenna of claim 1, wherein reflecting ground plate has abutment wall.
11. according to the described dual polarized antenna of claim 1, wherein the spacer between conductor loops and reflection ground plate is less than 0.3 wavelength.
12. according to the described dual polarized antenna of claim 1 as requested 1, the conductor loops of the radiant element of dipole antenna is made by a slice conductor material.
13. according to the described dual polarized antenna of claim 1, wherein the conductor loops of radiant element is arranged on the printed circuit board.
14. according to the described dual polarized antenna of claim 1, wherein supportive conductors is made by the pipe that is included in the electric feed cable in the pipe.
15. according to the described dual polarized antenna of claim 1, wherein the cross section of supportive conductors is the U font.
16. according to the described dual polarized antenna of claim 1, wherein supportive conductors is presented the printed circuit board of strip line and is included the terminated line that passes the cross slit and connect electric feeder line and conductor loops by containing electricity.
17. according to the described dual polarized antenna of claim 1, wherein crossing conductor and supportive conductors are made by a sheet metal.
18. according to claim 1, one of 14 described dual polarized antennas, electric feed cable wherein is placed in the conductor electric bridge that is positioned on the crossing conductor diagonal and is connected on the crossing conductor of crossing the cross slit.
19. according to the described dual polarized antenna in one of claim 1 or 16, the electric bridge of wherein crossing cross slit and connection electricity feedback strip line and crossing conductor is directly connected on the crossing conductor.
20. according to the described dual polarized antenna in one of claim 1 or 16, the end of wherein crossing the cross slit and connecting electricity feedback strip line and the electric bridge of crossing conductor all be connected the electric bridge end and link to each other with the waveguide short-circuit line of the conductor of corresponding balun.
21. according to the described dual polarized antenna in one of claim 1 or 17, wherein dual polarized antenna includes the printed circuit board that is placed on the crossing conductor, electricity feedback strip line, electric bridge, be placed in the waveguide short-circuit line on surface, be placed in conductor with respective electrical feedback strip line opposed bottom surface.
22. according to claim 1, one of 17 or 21 described dual polarized antennas, wherein the electric bridge of dual polarized antenna is crossed the cross slit along the diagonal of crossing conductor, and their first end is connected on the waveguide short-circuit line, and second end is connected on the electricity feedback strip line.
23. according to claim 1,17, one of 21 or 22 described dual polarized antennas, wherein the dielectric film of dual polarized antenna is placed between printed circuit board and the crossing conductor.
24. according to the described dual polarized antenna of claim 1, wherein the balun of dual polarized antenna is included on the reflection ground plate conductor that a plurality of conductors are supported in mutually short circuit..
25. according to one of 1 or 17 described dual polarized antennas as requested, wherein this antenna package contains a slice dielectric film, this film is placed between the curved end and reflection ground plate of supportive conductors.
26. according to claim 1,17,21, one of 22 or 23 described dual polarized antennas, wherein the end of the inner wire of the electric feed cable of dual polarized antenna is connected on the electricity feedback strip line, and the end of the outer conductor of electric feed cable is connected on the bottom surface that is placed in the printed circuit board relative with electricity feedback strip line.
27. according to the described dual polarized antenna of claim 1, wherein dual polarized antenna has the lobe width less than 70 degree.
28. according to the described dual polarized antenna of claim 1, wherein dual polarized antenna has the lobe width less than 60 degree.
29. according to the described dual polarized antenna of claim 1, wherein dual polarized antenna has the lobe width less than 50 degree.
30. according to the described dual polarized antenna of claim 1, the dual-polarized antenna array that wherein contains two or more radiant elements is arranged along the axis of an aerial array, and the aerial array axis is spent with+45 and-45 mode radiation of spending relatively.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031559514A CN100461530C (en) | 2003-08-27 | 2003-08-27 | Bipolarized antenna |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031559514A CN100461530C (en) | 2003-08-27 | 2003-08-27 | Bipolarized antenna |
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| CN1591976A true CN1591976A (en) | 2005-03-09 |
| CN100461530C CN100461530C (en) | 2009-02-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB031559514A Expired - Lifetime CN100461530C (en) | 2003-08-27 | 2003-08-27 | Bipolarized antenna |
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| CN (1) | CN100461530C (en) |
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