CN2520003Y - Short-wave distribution type multi-dipole antenna - Google Patents
Short-wave distribution type multi-dipole antenna Download PDFInfo
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- CN2520003Y CN2520003Y CN 01247163 CN01247163U CN2520003Y CN 2520003 Y CN2520003 Y CN 2520003Y CN 01247163 CN01247163 CN 01247163 CN 01247163 U CN01247163 U CN 01247163U CN 2520003 Y CN2520003 Y CN 2520003Y
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Abstract
The utility model is a short wave distributed multiple current dipoles antenna. Two or four vertical dipole antenna units installed on the ground or the metal plane are connected in series through a transmission line of high impedance. The input ends of the antennas are respectively connected with allocation inductances, and then a network which has a parallel connection with the prior antenna network is formed. Such as a double dipole which works in the frequency band of 160-1000MHz is two vertical small antennas installed on the ground, and the height is 0.1-0.6m, the diameter is 0.5-10mm, and the distance is 0.01-0.2m. The two vertical small antennas are connected in series through a transmission line with the impedance of 50-200 OHMIC, and the allocation inductances with 30-90, 70-150 nanohenry are connected between each antenna and the ground respectively. The utility model has the advantages that: the antenna can realize the broadband matching of the small antenna, and can improve the efficiency of the antenna, especially the radiation efficiency in the low frequency end of corresponding band; the utility model can form a distributed multiple current dipoles antenna system, which can work in broadband range with the octave larger than 4-16:1; the utility model has small volume and light weight, as well as is suitable to be used for the vehicle movement.
Description
(1) invention field
The utility model relates to a kind of shortwave spaced antenna, the distributed many dipole antennas of particularly a kind of shortwave.
(2) background of invention
Because the limited length of wire antenna,,,, be typical electronically small antenna because that its antenna length L compares with emission wavelength lambda is very little at the low frequency end of its corresponding frequencies scope for the wire antenna that in broadband, uses.For electronically small antenna, in broadband, raise the efficiency, especially to raise the efficiency be one of its topmost problem to the low frequency end in frequency band.Impedance frequency bandwidth for energy broadening wire antenna generally adopts methods such as loading, series impedance, change oscillator shape.But at present in shortwave, ultrashort wave and microwave band, the efficient of electronically small antenna is still very low.As near the 2MHz frequency range, the efficient of general electronically small antenna only is about 1%.Two whip loaded antennas of 11.6 meters that the U.S. is advanced, the standing-wave ratio in most of scope of 2～30MHz frequency range is less than 3; This type of antenna with two load networks is upgraded to 5.48 in 2MHz place standing-wave ratio, and its efficient is 50%～80% in 6～30MHz scope, and reduces to 3.5% at the 2.5MHz place, the antenna efficiency with three load networks only 1.9%.
(3) summary of the invention
The purpose of this utility model is the distributed many dipole antennas of a kind of shortwave of design, and under situation about not loading, the impedance bandwidth of broadening antenna improves antenna radiation efficiency.Thereby for broadband communications provides the miniature antenna that volume is little, in light weight, efficient is high.
Design of the present utility model is as follows: be installed in 2 or 4 upright miniature antennas on ground or the metal flat, highly be less than or equal to 1/10th of maximum functional wavelength, be i.e. L≤0.1 λ
Max(λ is operation wavelength, λ=v/f, and v is electromagnetic speed, v=3 * 10
8(meter per second), f are operating frequency).Dipole antenna unit is together in series with the transmission line of high impedance, inserts the allotment inductance between the input of each antenna and ground respectively, constitutes a network in parallel with the primary antenna network.
Advantage of the present utility model is: 1 realizes the Broadband Matching of miniature antenna, realizes broad-band antenna, and improves the efficient of antenna on this basis, especially in the radiation efficiency of the low frequency end of corresponding band; 2 a plurality of dipole antenna units of the present utility model are formed distributed many dipoles miniature antenna system, can be operated in greater than 4～16: in the broad frequency range of 1 octave; 3 volumes are little, in light weight, reduce cost, be applicable to vehicle-mounted mobile use.
(4) description of drawings
Fig. 1 is the distributed double dipole antenna of a utility model shortwave schematic diagram;
Fig. 2 is the distributed double dipole antenna impedance matching of the utility model shortwave figure;
Fig. 3 is the distributed four dipole antenna schematic diagrames of the utility model shortwave.
(5) embodiment
Embodiment below in conjunction with the many dipole antennas of description of drawings the utility model.
As shown in Figure 1, the double dipole antenna that is operated in 160～1000MHz frequency range is 2 upright miniature antennas 2 that are installed on the ground 1, highly is 0.1～0.6 meter, and diameter is 0.5～10 millimeter, and spacing is 0.01～0.2 meter.The transmission line 3 of two dipole antenna units with a high impedance is together in series, and its characteristic impedance is 50～200 ohm.Inserting inductance respectively between the input of every antenna and ground 1 is the allotment inductance 4 of 30～90 nanohenry and the allotment inductance 5 of 70～150 nanohenry.
As shown in Figure 2, its input impedance equivalence of dipole electronically small antenna is a small resistor and the two-port network of connecting of a little electric capacity, and high-impedance transmission line 3, allotment inductance 4,5 have constituted a network in parallel with the double dipole aerial network.After the allotment, its standing-wave ratio major part is less than 3 in 160～1000MHz frequency range.
As shown in Figure 3, distributed four dipole antennas that are operated in 2MHz～30MHz frequency range are 4 upright wires antennas 2 that are installed on the ground 1, highly are 2～12 meters, and diameter is 10～150 millimeters, and spacing is 0.5～6 meter.The transmission line 3 of four dipole antenna units with a high impedance is together in series, and its characteristic impedance is 50～200 ohm.Between the input of every antenna and ground, insert inductance respectively and be the allotment inductance 7 of allotment inductance 6,100～1500 nanohenry of allotment inductance 5,100～1500 nanohenry of allotment inductance 4,1750～3750 nanohenry of 750～2250 nanohenry.After the allotment, its standing-wave ratio major part is less than 3 in 2MHz～30MHz frequency range.
Following table explanation antenna and transmission line and the allotment inductance numerical value that disposes among distributed many dipole antennas embodiment of different frequency range that is operated in of the present utility model adopts allotment inductance 4,5 for the double dipole antenna.f ( MHz ) 2～30 30～160 160～1000L ( ) 2～12 0.5～3.0 0.1～0.6 ( ) 10～150 5～60 0.5～10 ( ) 0.5～6 0.1～3 0.01～0.2 24 24 243 ( Ω ) 50～200 50～200 50～2004 ( nH ) 750～2250 150～450 30～905 ( nH ) 1750～3750 350～750 70～1506 ( nH ) 100～1500 10～300 2～607 ( nH ) 100～1500 10～300 2～60
Claims (7)
1 one kinds of distributed many dipole antennas of shortwave, for being installed in 2 or 4 upright miniature antennas on ground or the metal flat, antenna height is less than or equal to 1/10th of maximum functional wavelength, antenna input links to each other with impedance or inductance, it is characterized by: dipole antenna unit is connected with the transmission line of high impedance, between the input of each antenna and ground, insert the allotment inductance respectively, constitute a network in parallel with the primary antenna network.
The distributed many dipole antennas of 2 a kind of shortwaves according to claim 1 is characterized by: 2 upright miniature antennas (2), highly be 0.1～0.6 meter, and diameter is 0.5～10 millimeter, spacing is 0.01～0.2 meter; Transmission line (3) characteristic impedance is 50～200 ohm; Allotment inductance (4,5) is 30～90 nanohenry and 70～150 nanohenry.
The distributed many dipole antennas of 3 a kind of shortwaves according to claim 1 is characterized by: 2 upright miniature antennas (2), highly be 0.5～3 meter, and diameter is 5～60 millimeters, spacing is 0.1～3 meter; Transmission line (3) characteristic impedance is 50～200 ohm; Allotment inductance (4,5) is 150～450 nanohenry and 350～750 nanohenry.
The distributed many dipole antennas of 4 a kind of shortwaves according to claim 1 is characterized by: 2 upright miniature antennas (2), highly be 2～12 meters, and diameter is 10～150 millimeters, spacing is 0.5～6 meter; Transmission line (3) characteristic impedance is 50～200 ohm; Allotment inductance (4,5) is 750～2250 nanohenry and 1750～3750 nanohenry.
The distributed many dipole antennas of 5 a kind of shortwaves according to claim 1 is characterized by: 4 upright wires antennas (2), highly be 0.1～0.6 meter, and diameter is 0.5～10 millimeter, spacing is 0.01～0.2 meter; Transmission line (3) characteristic impedance is 50～200 ohm; Allotment inductance (4,5,6,7) is respectively 30～90 nanohenry, 70～150 nanohenry, 2～60 nanohenry and 2～60 nanohenry.
The distributed many dipole antennas of 6 a kind of shortwaves according to claim 1 is characterized by: 4 upright wires antennas (2), highly be 0.5～3 meter, and diameter is 5～60 millimeters, spacing is 0.1～3 meter; Transmission line (3) characteristic impedance is 50～200 ohm; Allotment inductance (4,5,6,7) is respectively 150～450 nanohenry, 350～750 nanohenry, 10～300 nanohenry and 10～300 nanohenry.
The distributed many dipole antennas of 7 a kind of shortwaves according to claim 1 is characterized by: 4 upright wires antennas (2), highly be 2～12 meters, and diameter is 10～150 millimeters, spacing is 0.5～6 meter; Transmission line (3) characteristic impedance is 50～200 ohm; Allotment inductance (4,5,6,7) is respectively 750～2250 nanohenry, 1750～3750 nanohenry, 100～1500 nanohenry and 100～1500 nanohenry.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01247163 CN2520003Y (en) | 2001-07-30 | 2001-07-30 | Short-wave distribution type multi-dipole antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01247163 CN2520003Y (en) | 2001-07-30 | 2001-07-30 | Short-wave distribution type multi-dipole antenna |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2520003Y true CN2520003Y (en) | 2002-11-06 |
Family
ID=33658059
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01247163 Expired - Fee Related CN2520003Y (en) | 2001-07-30 | 2001-07-30 | Short-wave distribution type multi-dipole antenna |
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| CN (1) | CN2520003Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102544761A (en) * | 2010-12-22 | 2012-07-04 | 和硕联合科技股份有限公司 | Electronic device |
| CN103268978A (en) * | 2013-04-22 | 2013-08-28 | 中国电子科技集团公司第二十二研究所 | Miniaturization short wave broadband omnidirectional high elevation communication antenna |
-
2001
- 2001-07-30 CN CN 01247163 patent/CN2520003Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102544761A (en) * | 2010-12-22 | 2012-07-04 | 和硕联合科技股份有限公司 | Electronic device |
| CN103268978A (en) * | 2013-04-22 | 2013-08-28 | 中国电子科技集团公司第二十二研究所 | Miniaturization short wave broadband omnidirectional high elevation communication antenna |
| CN103268978B (en) * | 2013-04-22 | 2015-07-22 | 中国电子科技集团公司第二十二研究所 | Miniaturization short wave broadband omnidirectional high elevation communication antenna |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20021106 |