CN1026934C - Orthogonal loop aerials - Google Patents
Orthogonal loop aerials Download PDFInfo
- Publication number
- CN1026934C CN1026934C CN 91103152 CN91103152A CN1026934C CN 1026934 C CN1026934 C CN 1026934C CN 91103152 CN91103152 CN 91103152 CN 91103152 A CN91103152 A CN 91103152A CN 1026934 C CN1026934 C CN 1026934C
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- CN
- China
- Prior art keywords
- ring
- distributing point
- antenna
- orthogonal
- annulus
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Variable-Direction Aerials And Aerial Arrays (AREA)
Abstract
The present invention relates to a loop aerial. A metallic circular loop with the perimeter equal to lambda is arranged on the sagging face of a conventional double-loop antenna in the position corresponding to each circular loop; the circuit loops which are newly arranged and are positioned at the same side of a middle feeding point are connected by parallel conducting wires; orthogonal circuit loops are isolated; the orthogonal outer end of two sets of the circuit loops at the utmost side are in the state of short circuit, and the orthogonal circuit loops at the innermost side are connected in parallel by lambda/4 of feeding wire.
Description
The present invention relates to a kind of the distribution along circular current is uniform loop aerial basically, and this antenna is particularly suitable for television transposer stations or the frequency modulation relay station is used as transmitting antenna.This antenna comprises and is symmetrically arranged in the distributing point both sides and is arranged parallel to each other that girth equals several metal rings of operation wavelength λ, the conventional double loop antenna that each interannular is connected to form with parallel wire.
For improving double loop antenna that launching effect and directional diagram grow up all is to adopt double loop antenna that several pairs are added with reflector to be installed on around the mast by the direction of required radiation in actual applications.Though this measure has realized direction-free field pattern, and have the high advantage of gain, bring complex structure, difficulty is installed, the deficiency that cost increases, and also the wind resistance of antenna is poor, therefore, only is applicable to that regular TV station makes transmitting antenna.
The purpose of this invention is to provide a kind of high frequency bandwidth that gains, omnidirectional radiation horizontal polarization and antenna system simple in structure again, easy for installation, with low cost, that better wind resistance is arranged.
Purpose of the present invention realizes with following measure: position corresponding with each ring on the middle vertical plane of conventional double loop antenna respectively is provided with the becket that another girth equals operation wavelength λ, each ring that is positioned at the distributing point homonymy of newly establishing is connected with parallel wire, the ring mutually insulated of per two quadratures, apart from distributing point one group of quadrature annulus end place short circuit outside farthest, apart from equaling the feeder line of λ/4 with length between one group of nearest orthogonal loop of distributing point and connecing.
Structure of the present invention can be in the following way: fix each quadrature becket with ring made of insulating material respectively, the short circuit ring of manufacturing with two metal materials is realized the short circuit between the orthogonal loop of two outermost end.The pipe of one section insulating material of cover on mast, and this pipe is fixed on the mast will be fixed with the insulation ring of quadrature becket and the insulating sleeve of short-circuited conducting sleeve snare on mast that metal is manufactured, and fixes it.
Advantage of the present invention is as follows:
1. simple in structure, solid and reliable, easy to adjust, and cheap.According to the reality measuring and calculating, individual layer antenna system of the present invention, cost is lower than two-layer cross antenna.
2. the radiation characteristic of antenna is horizontal polarization, omnirange rotating field, and the characteristics of broadband, high-gain are arranged.Be better than four layers of cross antenna according to actual measurement individual layer antenna system gain of the present invention greater than 4.5db(), standing-wave ratio is less than 1.25.If adopt its gain of sandwich construction with corresponding raising.
3. the present invention has good wind resistance.
This shows that the present invention has the high ratio of performance to price.
Accompanying drawing provides structure chart of the present invention, wherein:
Fig. 1 is the front view of single layer structure antenna, and this figure also is a Figure of abstract,
Fig. 2 is Fig. 1 left view,
Fig. 3 is the front elevational schematic of 2 layers of structural antenna,
Fig. 4 looks schematic diagram for the left side of Fig. 3,
Fig. 5 is the distributing point winding diagram.
Following structure drawings and Examples are made detailed explanation to the present invention.
The individual layer antenna that Fig. 1 shows is by the metal ring A that two be arranged in parallel, girth equals operation wavelength λ
On 1And A
1 timeAnd be arranged at annulus A
On 1And A
1 timeOn the middle vertical plane, girth equals λ, and is positioned at A
On 1And A
1 timeTwo metal ring B in addition of correspondence position
On 1And B
1 timeConstitute.Ring A
On 1And B
On 1(and ring A
1 timeAnd B
1 time) be fixedly connected with ring 3 made of insulating material at the near-end of distance distributing point 4, draw a circle to approve connection at the far-end of distance distributing point 4 with becket, realize the short circuit of two interannulars simultaneously.Ring A
On 1And A
1 timeBetween have parallel wire 2a to be connected with 2b.At the near-end of distance distributing point 4, be that λ/4 feeder line 6a and 6b join and realize omnidirectional's rotating field of the interior horizontal polarization of horizontal plane with length between ring A and B.The assembling that antenna and mast are 7 is achieved in that cover one insulating sleeve 8 on mast 7, and sleeve pipe 8 is fixed on the mast 7, then each insulation ring 3 and short circuit ringle 5 is placed in outside the pipe 8, and these rings are fixed on the pipe 8.
Fig. 3, two-layer antenna structure and individual layer antenna structure shown in Figure 1 shown in Figure 4 are similar, and its difference only is: the antenna ring body that is positioned at distributing point 4 both sides is two-layer, i.e. A
On 1, A
1 timeAnd B
1 time, B
1 timeAnd A
On 2, A
2 timesAnd B
On 2, B
2 timesAll connect between the A ring body, and the B ring body only is to be positioned at connecting with parallel wire of distributing point 4 the same sides, i.e. B with parallel wire 2a, 2b
On 1With B
On 2Use parallel wire 9a
On, 9b
2 timesB
1 timeUse parallel wire 9a
DownWith 9b
DownConnect; Two quadrature ring bodies of outermost layer connect and realization short circuit, i.e. A with ringle 5 in outermost end
On 1With B
On 1 Outermost end 10 usefulness ringles 5 connect A
1 timeWith B
1 timeOutermost end 10 ' connect with another ringle 5, the A ring body all connects with the ring 3 that insulate with all the other contacts of the B ring body of quadrature, and mutually insulated between realization A, B ring body; Apart between one group of nearest ring body of distributing point 4, i.e. A
On 2, B
On 2Between and A
2 times, B
2 timesBetween at distance distributing point 4 closest approaches 12 and 12 ' locate to be the feeder line of λ/4 and to connect with length.
The mode that feeding classification of the present invention preferably adopts Fig. 5 to show promptly is connected with two sections long feeder lines of 3 λ/4 with λ/4 between two feedbacks point, Compositional balance-imbalance conversion.Connect the long feeder line in a usefulness λ/4 at contact 11 places and constitute adaptation, be used for and outer feeder line coupling.As between two feedbacks point, adding a matching capacitance, then be more convenient for adjusting.
From the above, structure of the present invention is to add one group of annulus to constitute on the middle vertical plane of conventional double loop antenna.Therefore make the requirement of relevant requirements and how much, electric parameter and conventional double loop antenna in installing and how much, electric parameter is consistent.Can find out also that simultaneously because architectural feature of the present invention, it is subjected to wind moment seldom, so wind loading rating of the present invention is good.
An exemplary embodiments of the present invention is as follows:
Present embodiment is the individual layer antenna system that is used for 12 channels, and the ring girth is 137 centimetres, and ring adopts aluminum pipe to make, and the short circuit becket is made with aluminium, and dead ring and insulating sleeve are made with poly-fluoroplastics, and this antenna measured data is as follows:
(table is seen the literary composition back)
The standing-wave ratio measured value of present embodiment is 1.1～1.25.
The restriction of tested person place and test condition in the above data test, individual data is undesirable, as gets rid of these influences, and test result will be better.
The present invention has provided the schematic diagram of individual layer and double-layer structure.In actual applications can be according to technical characterictic of the present invention, make the antenna of three layers, four layers even more multi-layered structure.
The 215MH 4.55db that gains
0 ° 20 ° 40 ° 60 ° of angles
The water degree polarizes 29.2 30.0 29.2 25.7
Perpendicular polarization 25 25.5 23.8 14.8
80° 100° 120° 140° 160° 180°
22.4 15.2 18.2 24 26.6 28.8
29 28.8 19 20.5 21.5 22
200° 220° 240° 260° 280°
29.6 29.2 27.2 23.2 15.7
21.5 21 26.3 28.7 26.5
300° 320° 340° 360°
18.2 23.2 26.2 29.2
15 25.2 25.8 25
The 219MHZ 4.5db that gains
0 ° 20 ° 40 ° 60 ° 80 ° 100 ° of angles
Horizontal polarization 28.5 29 28 26 21.8 15.5
25.3 25.3 25.3 25.1 14.3 25.3 30
120° 140° 160° 180° 200° 220°
19 24.5 27 29 29.5 29.5
27.3 16.3 21.3 23.6 24.3 22.1
240° 260° 280° 300° 320° 340° 360°
27.9 23.5 14.9 18.3 24.5 26.9 28.5
19.8 28.3 28.5 14.3 22.3 25.3 25.3
The 223MHZ 4.5db that gains
0 ° 20 ° 40 ° 60 ° 80 ° of angles
Horizontal polarization 29.8 27.5 24.7 19.8 12.4
Perpendicular polarization 26.5 26.3 25.7 16.5 27.3
100° 120° 140° 160° 180° 200° 220°
22 27 29.3 30 30 28.3 25.2
28.3 17 24 24 19.3 15.5 16.5
240° 260° 280° 300° 320° 340° 360°
20.2 16 22.8 26 28.5 29.3 29.8
26.5 30 26 15.3 25.3 24.3 26.5
Claims (2)
1, loop aerial, symmetric arrangement is arranged parallel to each other respectively in the both sides of distributing point, and girth equals several metal rings of operation wavelength λ, each interannular connects with parallel wire, at feed end balance one imbalance converter is arranged, constitute conventional double loop antenna thus, it is characterized in that on the middle vertical plane of conventional double loop antenna, and the position corresponding with each ring respectively is provided with the metal ring that another girth equals λ, being positioned at each interannular that the distributing point homonymy newly establishes connects with parallel wire, mutually insulated between per two orthogonal loops, locate short circuit apart from distributing point two groups of orthogonal loops farthest in the outer end, each annulus of newly establishing and another annulus equal the feeder line of λ/4 with length and connect in two groups of nearest quadrature annulus of distributing point.
2, antenna according to claim 1, it is characterized in that respectively the ring interannular corresponding with it fixed with the insulation ring, the outer end that is positioned at outermost two groups of quadrature annulus realizes that with the becket circle short circuit connects, and the insulation ring of orthogonal loop and ringle is housed is placed on the insulating sleeve on the mast.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91103152 CN1026934C (en) | 1991-05-07 | 1991-05-07 | Orthogonal loop aerials |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91103152 CN1026934C (en) | 1991-05-07 | 1991-05-07 | Orthogonal loop aerials |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1066533A CN1066533A (en) | 1992-11-25 |
| CN1026934C true CN1026934C (en) | 1994-12-07 |
Family
ID=4905931
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 91103152 Expired - Fee Related CN1026934C (en) | 1991-05-07 | 1991-05-07 | Orthogonal loop aerials |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1026934C (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1773771B (en) * | 2005-10-21 | 2012-02-08 | 兰州大学 | Orthogonal ring antenna |
| US20100315195A1 (en) * | 2009-06-12 | 2010-12-16 | Symbol Technologies, Inc. | Methods and apparatus for a dual polarization antenna system |
-
1991
- 1991-05-07 CN CN 91103152 patent/CN1026934C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1066533A (en) | 1992-11-25 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C15 | Extension of patent right duration from 15 to 20 years for appl. with date before 31.12.1992 and still valid on 11.12.2001 (patent law change 1993) | ||
| OR01 | Other related matters | ||
| 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 |