CN2752984Y - Triangular prism eight port PHS base station antenna - Google Patents
Triangular prism eight port PHS base station antenna Download PDFInfo
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- CN2752984Y CN2752984Y CN 200420085995 CN200420085995U CN2752984Y CN 2752984 Y CN2752984 Y CN 2752984Y CN 200420085995 CN200420085995 CN 200420085995 CN 200420085995 U CN200420085995 U CN 200420085995U CN 2752984 Y CN2752984 Y CN 2752984Y
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Abstract
The utility model discloses a triangular prism eight port PHS base station antenna. The utility model integrates three sector omnidirectional coverage dual polarization and a directional sector dual polarized antenna into a whole, and has the function of sector space dual diversity. The utility model is characterized in that the dual polarized unit of the trihedral antenna is divided into an upper group and a lower group according to the gain balance principle; each of polarization vibrators with the same degree of the upper group of the three sector antenna dual polarization unit is connected with a three-way power synthesizer and carries out power synthesis, so that two omnidirectional antennae and two omnidirectional coverage beam interfaces are formed; each polarization vibrator of the lower group of a three sector antenna dual polarized antenna radiating unit is connected with a feeding network, so that six directional sector antennae and six directional beam direct output interfaces which cover different areas are formed; eight radio frequency ports in all can be in matching connection with PHS enhanced C7T base stations. The utility model can have dual polarization or four polarization, the signal to jamming ratio of the utility model is improved and the gain of the utility model is greater than 11 decibels. The utility model can be used for PHS base stations, GSM or CDMA mobile base stations and other communication systems.
Description
Technical field
The utility model relates to the communication antenna technology, a kind of specifically triangular prism eight port PHS antenna for base station with omnidirectional's covering and directed sector covering function, can be used for PHS personal hand-held phone---PHS base station, also can be used for the high-end base station of GSM or cdma mobile communication and other communication system of similar requirement is arranged.
Background technology
One of background technology
At mobile communication system and PHS personal hand-held phone---in the Personal Handyphone System communication system,, can adopt space diversity or polarization diversity technique usually in order to overcome the received signal decline that the multipath transmission causes.In the PHS personal hand-held phone, usually adopt and overpay (for example 4 * 2) identical vertical depolarized omnidirectional antenna, constitute two-layer up and down, separated by a distance in level and vertical direction, constitute the antenna for base station (referring to Fig. 3) of space diversity.The antenna for base station of this form is commonly called as octopus, is widely used in the first generation PHS personal hand-held phone 1C7T base station, is seen everywhere on many buildings top in city.But the shortcoming of this antenna for base station is, one, because omnidirectional's space diversity requires will maintain a certain distance between each antenna, the volume that causes its integral body to take is big, generally all need to occupy the geometric space of 2 meters * 3 meters of about φ, and eight flagpole antenna unit are evenly distributed on diameter and are about around 2 meters the cylindrical, upright, duty greatly, not attractive in appearance, inharmonious with surrounding environment.Along with the raising of people's living standard and beautifying of urban life environment, this antenna for base station more and more is subjected to house owner and management of markets in urban districts person's conflict.Press for the research and development new antenna and replace it.At the PHS systems organization with in building, transform and the work that beautifies this antenna for base station just progressively launches.Its two, use as communication because high-lager building stands in great numbers, the interference noise source complexity, single perpendicular polarization and omnidirectional cover, and can not adapt in the aerial signal transmission uncertainty of polarization vector and antijamming capability.
Two of background technology
" the Personal Handyphone System communication system omnidirectional intelligent aerial " of sea, Xi'an day Science and Technology Co., Ltd.'s research and development solved a polarization and the antenna integrated difficult problem of space diversity omni-base station.Antenna structure is the combination (referring to Fig. 4) of three sector dual polarized antennas and vertical depolarized omnidirectional antenna.Antenna top is the straight-bar vertical depolarized omnidirectional antenna, and the bottom is triangular prism (or drum) three sector dual polarized antennas.This antenna uses three double-polarization plate antennas, simplifies the structure to have dwindled volume, reduced cost, and does not influence electrical property, has certain practical value.But the problem of this antenna is: 1. it only has seven effective output ports, can not realize being connected with the full coupling of PHS eight port one C7T base station equipments.2. this antenna has adopted about 1 meter shaft-like vertical depolarized omnidirectional antenna how long at the top, as one " plait ", withstands on the crown of column antenna, and is from the consideration of beautifying the environment, still not susceptible to user acceptance; 3. when this antenna sets up separately, generally need lightning rod be installed directly on antenna body, this kind structure will be difficult to realize.Owing to first-class reason, the user still wishes to remove " plait ", carries out the technological improvement design.
The utility model content
The technical problems to be solved in the utility model is to overcome the deficiencies in the prior art, provides a kind of triangular prism eight port PHS antenna for base station, further to improve the integrated combination Bipolarization antenna for base station in three sectors.Technical solution of the present utility model is in integrated triangular column radome, radiating element with the directed plate antenna of three dual polarizations, be divided into two groups of antennas up and down, go up (or down) one group of three sector ± 45 ° dual polarized antenna, the vertical plane group battle array of the radiating element by polarization of the same race, No. three power combiners that reach three sectors carry out power and synthesize, and form two ± 45 ° dual-polarized omnidirectional radiation directional diagrams, and two omni-beam output ports are arranged; Down (or on) one group of three sector ± 45 ° of dual polarized antennas, the vertical plane group battle array of the radiating element by polarization of the same race, form three sectors ± 45 ° of dual-polarized six directed radiation directional diagrams independently, each sector covers 120 °, and six directional beam output ports are arranged.Add up to eight output ports, can realize being connected with the coupling fully of PHS enhancement mode 1C7T base station.This design philosophy can be applicable, by upper and lower two groups radiating element number is pressed proper proportion assign group battle array feed, can develop out different gain series, to satisfy different gain requirements, and feasible emission and receive path gain balance, the coverage of expansion base station.According to user's demand,, just antenna array can be become four polarization or dual polarization structures as long as change the structure of last one group of omnidirectional antenna unit.
Compared with prior art, the utlity model has following advantage:
1. adopt polarization diversity and the incorporate design philosophy of space diversity, on the dual-polarized basis of omnidirectional antenna, by being set, the sector covers wave beam, increased the space diversity function, the required omnidirectional of existing signalling path covers wave beam, and the sector covering wave beam that is fit to receive link is arranged again.Cover the horizontal radiation pattern (Fig. 7) of wave beam and the horizontal radiation pattern (Fig. 8) of omnidirectional antenna all can effectively be realized 360 degree coverings from the orientation of actual measurement, and improved signal interference ratio, under the identical situation of base station miscellaneous equipment, adopting the utility model antenna can make base station operating distance is 2 times of base station of omnidirectional's spatial diversity antennas;
2. by rationally adjusting upper and lower two groups of antenna radiation unit quantity, can improve polarization diversity gain effectively, make and launch and the receive path gain balance.Omnidirectional gain and directive gain are greatly, equal 11dBi.And traditional octopus antenna is difficult to accomplish greater than 10 decibel gains;
3. the utility model can be combined into four poliarizing antennas or dual polarized antenna easily by changing the structure of one group of dual-polarization radiating unit on the antenna, than one four poliarizing antenna of special research and development, simplifies the structure, and can reduce cost, reduce volume and weight greatly;
4. the utility model has realized that on the same antenna space diversity and polarization diversity combine, not only make the structure of antenna more be becoming tight to gather, volume dwindles greatly, the overall appearance of antenna is integrated triangular column, remove " plait " on the head, and reduced the radio frequency loss of outside connection feeder line.
Description of drawings
Fig. 1 is the utility model antenna internal structure schematic diagram, and Fig. 1 a is four poliarizing antenna structures, and Fig. 1 b is the dual polarized antenna structure
Fig. 2 is the utility model---triangular prism eight port PHS antenna for base station model machine photos
Fig. 3 is traditional octopus PHS antenna for base station schematic diagram
Fig. 4 is a Personal Handyphone System communication system omnidirectional intelligent aerial photo
Fig. 5 be two kinds of feeding networks of the utility model triangular prism eight port PHS antenna for base station theory diagram wherein: Fig. 5 a represents that top is the synthetic omni-beam schematic diagram of 0 °/90 ° dual polarized antenna unit group battle arrays, and the bottom is the directional beam schematic diagram of ± 45 ° of dual polarized antenna unit group battle arrays
Fig. 5 b represents that top and the bottom are ± 45 ° of synthetic omni-beam schematic diagrams in three sectors that dual polarized antenna unit is organized battle array respectively, and three sector directional beam schematic diagrams;
Fig. 6 is the utility model eight terminal port antennaes and 1C7T enhanced base station connection diagram
Fig. 7 is six the directed measured level face directional diagrams that cover wave beam in the utility model antenna three sectors
Fig. 8 is the measured level face directional diagram of the synthetic omnidirectional antenna in the utility model antenna three sectors
Embodiment
Fig. 1 has provided antenna for base station internal radiation cellular construction schematic diagram.It comprises Fig. 1 a and Fig. 1 b of two embodiment of the present utility model.Below in conjunction with drawings and Examples the utility model is elaborated.
Embodiment one, and antenna for base station of the present utility model is that three panel shape poliarizing antennas are installed on vertical centre pole or the pole by mechanical connecting structure, is combined into one regular triangular prism shaped three sector-polarized antenna, as shown in Figure 1.Three sectors 4, top of Fig. 1 a are by three equally distributed 0 °/90 ° dual-polarization radiating unit 1 orthogonal sets battle arrays, and three sectors 3 are by the 2 groups of battle arrays in ° dual polarization unit, three equally distributed ± 45 down.Per three 90 ° of perpendicular polarization oscillators wherein going up three sectors 4 are connected with No. three power combiners respectively by feed with per three 0 ° of horizontal polarization oscillators, carry out three power synthetic after, form one group 90 ° polarization outputs, one group 0 ° polarization output just is combined into 90 ° of polarization omnidirectional antennas and 0 ° of polarization omnidirectional antenna.Three 90 ° and the 0 ° oscillators that polarize have three 120 ° of fan-shaped beams respectively, form two 360 degree theaomni-directional transmission wave beams with orthogonal polarization.Its feeding network structure is referring to Fig. 5 a.Down three sectors 3 each+45 °/-45 ° directed element direct feeds, again that every sector number of degrees are identical polarization oscillator is linked to be one the tunnel separately, forms-45 ° of+45 °, three polarization of three polarization totally six independently directional beam export.Because ± 45 ° of each wave beams of dual polarization unit cover 120 degree sectors respectively, after synthetic, can cover 360 degree.Its feeding network principle is shown in Fig. 5 a.
Referring to Fig. 6, the garden cylindrical rod at two ends represents that the wave beam delivery outlet of omnidirectional antenna is I, V through two synthetic omnidirectional antennas among the figure.Three rectangular slabs are represented six directed fan antennas, the delivery outlet of its six directional beams be II, IV, VII and, III, VI, VIII.Above-mentioned port and IC7T base station connected mode are: any one omni-beam delivery outlet of omnidirectional antenna, link to each other (representing with straight line) with signalling path (1C) port of PHS 1C7T enhanced base station as the V mouth among the figure, another links to each other (representing with oblique line) with port one of 7T for the I mouth.Six directional beam mouth II, IV, VII and III, VI, VIII are connected with other six interfaces of 7T respectively, and the identical person of figure bend direction represents equipolarization.This antenna just can be by one 0 °/90 ° polarization omni-beam emissions (1C) like this, one 90 °/0 ° polarization omni-beam, the 120 ° of coverings in six three sectors ± diversity reception of 45 ° of polarization wave beams (7T).Realization is connected with the coupling fully of the 1C7T base station of original eight ports.Because last sector 5 is output as 90 ° of perpendicular polarizations and 0 ° of horizontal polarization, 3+45 ° of outputs and-45 ° of two kinds of polarization of following sector, the antenna shown in Fig. 1 a is four polarization, three fan antennas.
Embodiment two, and shown in Fig. 1 b, last three sectors 4 and following three sectors 3 of triangular prism antenna of the present utility model are formed by ± 45 ° of dual polarization unit 2.Per three+45 ° polarization oscillators of last three sectors 4 and per three-45 ° polarization oscillators pass through feed respectively, be connected with No. three power combiners, it is synthetic to carry out three power, form one group+45 ° polarization outputs, one group-45 ° polarization outputs are combined into respectively+two omnidirectional antennas of 45 ° and-45 ° of polarization.The formation of six directional antennas of three sectors 3 down, wave beam output and all identical with the foregoing description one with the annexation of IC7T base station.Its feeding network principle is shown in Fig. 5 b.Since the polarisation unit of last sector 4 omnidirectional antennas of Fig. 1 b and following sector 3 directional antennas is ± 45 °, so the antenna shown in Fig. 1 b is dual polarization three fan antennas.
In the above-described embodiments, the antenna radiation unit number of last sector 4 and following sector 3 can be according to determining with the principle of sector covering gain balance.When adopting 6 antenna radiation unit group battle arrays for last one group, after the synthetic omnidirectional in three sectors, can obtain omnidirectional gain, as signaling control channel greater than 11 decibels; At this moment, next group only needs to adopt 2 antenna radiation units, can obtain the directive gain greater than 11 decibels.Link gain balance about making.As shown in Figure 1.And for example, upper and lower two groups polarisation unit number is respectively greater than 8 with greater than 3 o'clock, can obtain upper and lower link and respectively be the gain greater than 13 decibels.(not shown) is according to the method, the high-gain of realization antenna that can be more convenient.But the size of antenna gain should decide according to user's the needs and the environment for use of antenna.
For making each directed tabular antenna element combination of 0 °/90 ° on antenna top (or ± 45 °) dual polarization that uniform omnidirectional radiation characteristic be arranged, No. three power combiners of top combination feeding network should keep good coupling, be that standing-wave ratio is good, each branch road should keep uniform phase place to delay; Each antenna radiation unit is identical to the electrical length of the feeding network of No. three power combiners.
Referring to Fig. 2, radome 5 of the present utility model is the regular triangular prism housing, and this has just removed the plait on the head from structure.Make antenna shapes attractive in appearance, compact conformation, volume is little.Omnidirectional gain of making and the gain of directed sector are typical PHS antenna for base station model machine big, that equal 11dBi, and its fuselage height only is 1240mm, and the cross section length of side is 230mm.Eight N type radio-frequency joints 6 are installed on the bottom end cover 7 of radome 5, and these eight joints directly are connected with base station, PHS enhancement mode 1C7T base station, have reduced the long outside radio frequency loss that connects feeder line.The antenna mounting rod 8 that is located at the antenna bottom can vertically set up antenna easily.The utility model is alternative original " octopus " omnidirectional antennas linear array fully.
Fig. 7 is to next group antenna 3 three sector of the utility model+45 °/-45 ° six directed measured level face directional diagrams that cover wave beam, owing to each wave beam covers 120 degree sectors respectively, so after synthetic, can realize that 360 degree receive covering.
Fig. 8 is the measured level face directional diagram to the synthetic omnidirectional antenna in one group of antenna 4 three sector on the utility model, and it is by top dual-polarization radiating unit group battle array, the horizontal plane omnidirectional radiation directional diagram of the actual measurement antenna through three sector feeding networks after synthetic.Realized that 360 degree emissions cover.
From the measured result of Fig. 7 and Fig. 8 antenna as can be seen, because the utility model has been realized directedly combining with omnidirectional, has the function of sector and space dual diversity on same plate antenna.Therefore improve polarization diversity gain effectively, its electrical property is better than the perpendicular polarization PHS base station omnidirectional antennas linear array of original similar purposes, thereby improves the covering function of PHS base station, improves the coverage distance of base station.
Claims (5)
1. triangular prism eight port PHS antenna for base station, comprise antenna, radome and feeding network, antenna is formed by the directed tabular combination of antennas of three dual polarizations, dual-polarization radiating unit is the orthogonal sets battle array on the antenna-reflected plate, it is characterized in that the dual-polarization radiating unit of described array antenna is divided into upper and lower group, the identical polarization oscillator of each number of degrees of last one group of three fan antenna (4) dual-polarization radiating unit (1), be connected with No. three power combiners and to carry out power synthetic, synthetic two omnidirectional antennas have two omnidirectionals and cover the wave beam radio frequency interface; Next each polarization oscillator of organizing three fan antennas (3) dual polarization antenna radiation unit is connected with feeding network, and forming separately independently, 6 sector directional antennas have six directed directly radio frequency mouths of output of wave beam that cover; Have eight prevention at radio-frequency port, can be connected with PHS enhancement mode IC7T base station coupling.
2. triangular prism eight port PHS antenna for base station according to claim 1, it is characterized in that adopting 0 °/90 ° dual-polarization radiating unit combinations when last one group of omnidirectional antenna (4), when next group directional antenna (3) adopted ± 45 ° of dual-polarization radiating units (2) combination, described antenna was to have+four polarization, the three sector array antennas of 45 ° ,-45 °, 0 °, 90 ° four kinds of outputs.
3. triangular prism eight port PHS antenna for base station according to claim 1, it is characterized in that when upper and lower two groups of antenna radiation units all adopt ± during 45 ° of dual polarization unit combination, antenna is to have+dual polarization three fan antennas of 45 ° ,-45 ° two kinds of outputs.
4. triangular prism eight port PHS antenna for base station according to claim 1, it is characterized in that covering the principle and the related gain requirement of gain balance according to the sector, determine the radiating element number of upper and lower two groups of antennas, when last one group of antenna (4) adopts 6 dual-polarization radiating units, next group antenna (3) adopts 2 dual-polarization radiating units, the omnidirectional gain of antenna is identical with directive gain, and each is greater than 11 decibels; When upper and lower two groups radiating element number is respectively greater than 8 with greater than 3 the time, the omnidirectional gain and the directive gain of antenna are basic identical, for each greater than 13 decibels.
5. triangular prism eight port PHS antenna for base station according to claim 1, the structure that it is characterized in that described radome (5) is the regular triangular prism housing, eight radio-frequency joints (6) are housed on the lower end of antenna bottom (7), directly are connected with PHS base station module connectivity port.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420085995 CN2752984Y (en) | 2004-09-23 | 2004-09-23 | Triangular prism eight port PHS base station antenna |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420085995 CN2752984Y (en) | 2004-09-23 | 2004-09-23 | Triangular prism eight port PHS base station antenna |
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| CN2752984Y true CN2752984Y (en) | 2006-01-18 |
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| CN102142620A (en) * | 2010-12-06 | 2011-08-03 | 华为技术有限公司 | Dual-polarization omnidirectional antenna and wireless transceiving equipment |
| CN102655274A (en) * | 2012-05-24 | 2012-09-05 | 广东博纬通信科技有限公司 | Omni-bearing dual-polarization antenna |
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| CN103888960A (en) * | 2014-04-16 | 2014-06-25 | 成都福兰特电子技术有限公司 | Method for improving super all-direction intelligent outdoor base station receiving sensitivity |
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- 2004-09-23 CN CN 200420085995 patent/CN2752984Y/en not_active Expired - Fee Related
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