CN201758172U - Choking structure of a multi-frequency omni-directional antenna - Google Patents
Choking structure of a multi-frequency omni-directional antenna Download PDFInfo
- Publication number
- CN201758172U CN201758172U CN2010201804341U CN201020180434U CN201758172U CN 201758172 U CN201758172 U CN 201758172U CN 2010201804341 U CN2010201804341 U CN 2010201804341U CN 201020180434 U CN201020180434 U CN 201020180434U CN 201758172 U CN201758172 U CN 201758172U
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- CN
- China
- Prior art keywords
- chokes
- choking
- frequency
- pipe
- antenna
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- 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 - Lifetime
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Abstract
The utility model discloses a choking structure of a multi-frequency omni-directional antenna, comprising a vibrator and a connection component, characterized in that: the choking structure also comprises two frequency-division choking tubes of different lengths wherein the two choking tubes are connected in parallel to form a choking unit. The choking structure has advantages of small volume, strong portability, effectively increased deviation in roundness of the horizontal plane along the antenna radiation direction, simple structure and convenient production and is very finely used for the current various double-frequency, multi-frequency omni-directional antenna.
Description
Technical field
The utility model technology relates to the antenna of moving communicating field.Specifically relate to double frequency, multi-frequency omni-directional antenna, as existing various forms of omnidirectional antennas such as vehicle-mounted omnidirectional antenna, fixed station omnidirectional antenna, terminal AP omnidirectional antennas.
Background technology
The double frequency of prior art, the multi-frequency omni-directional antenna is because frequency range is many and the wide deviation in roundness of radiation pattern horizontal plane that causes of bandwidth can not reach the requirement that we want simultaneously in corresponding frequency range, this has also just caused the energy emission of antenna on horizontal plane even inadequately, will influence client's practical effect sometimes.The main cause that this situation occurs is exactly because the technology of tradition control antenna pattern horizontal plane deviation in roundness can only guarantee the high band or the deviation in roundness of low-frequency range, and can not guarantee the deviation in roundness of high and low frequency range internal antenna antenna pattern horizontal plane simultaneously, conventional omni-directional double frequency or multiband aerial mainly are to lean on the metal tube of one 1/4 wavelength to suppress negative-phase sequence curent, thereby guarantee that antenna is can radiation even at horizontal plane, promptly the deviation in roundness of radiation pattern horizontal plane can be guaranteed.Owing to have only a chokes pipe, for differing two frequency ranges more than the frequency multiplication, conventional way is that the chokes pipe designs with low-frequency range, and the just difficult control of high band horizontal radiation pattern deviation in roundness like this is difficult to reach balanced.
Summary of the invention
It is little that the purpose of this utility model is exactly that provide for the deficiency that solves prior art a kind of not only has the antenna volume of assurance, bandwidth, and gain is good and can improve the choke structure of omnidirectional antenna of the deviation in roundness of radiation pattern horizontal plane greatly.
The utility model is to adopt following technical solution to realize above-mentioned purpose: a kind of choke structure of omnidirectional antenna, comprise oscillator, link, it is characterized in that: it also comprises plural chokes pipe, this chokes pipe chokes unit that connects and composes parallel with one another.
As further specifying of such scheme, described plural chokes pipe presses by link and links together.
Described link is the metal connector.
Described chokes pipe comprises a metal tube for 1/4 wavelength of low-frequency range center frequency point, and another is the metal tube of 1/4 wavelength of high band center frequency point.
Described chokes pipe adopts metal material or plastic tube to replace by the electroplating surface metal.
The beneficial effect that the utility model adopts above-mentioned technical solution to reach is:
The utility model is on the basis of traditional antenna technology, adopt frequency division design chokes pipe, one is the metal tube of 1/4 wavelength of low-frequency range center frequency point, one is the metal tube of 1/4 wavelength of high band center frequency point, adopt such structure, can well control low-and high-frequency end negative-phase sequence curent simultaneously, and then improve the deviation in roundness of whole frequency antenna pattern horizontal plane.
Description of drawings
Fig. 1 is the utility model structural representation.
Description of reference numerals: 1, oscillator 2, link 3, high band chokes pipe 4, low-frequency range chokes pipe
Embodiment
As shown in Figure 1, the choke structure of a kind of omnidirectional antenna of the utility model comprises the chokes pipe of oscillator 1, link 2 and two different lengths, that is, high band chokes pipe 3 and low-frequency range chokes pipe 4, two chokes pipes are connected in parallel and constitute the chokes unit.Wherein, high band chokes pipe 3 and low-frequency range chokes pipe 4 are formed the chokes unit and simultaneously the negative-phase sequence curent in the height frequency range are played inhibitory action, and by adjusting the input impedance of antenna, the frequency range internal impedance that makes us need is mated.High radiation efficiency should be selected in the selection aspect as far as possible, the metal material of high conductivity, and in the present embodiment, the chokes pipe adopts metal material or plastic tube to replace by the electroplating surface metal.One in two chokes pipes is the metal tube of 1/4 wavelength of low-frequency range center frequency point, and another is the metal tube of 1/4 wavelength of high band center frequency point.
Above-described only is preferred implementation of the present utility model; should be understood that; so long as the multiband omnidirectional antenna adopts 1/4 length metal pipe chokes principle to guarantee the antenna of horizontal plane radiation effect; if the employing present technique improves the deviation in roundness of antenna pattern horizontal plane, all in the protection range of this patent.
Claims (5)
1. the choke structure of an omnidirectional antenna comprises oscillator, link, it is characterized in that: it also comprises plural chokes pipe, this chokes pipe chokes unit that connects and composes parallel with one another.
2. the choke structure of omnidirectional antenna according to claim 1 is characterized in that: described plural chokes pipe presses by link and links together.
3. the choke structure of omnidirectional antenna according to claim 1 and 2, it is characterized in that: described link is the metal connector.
4. the choke structure of omnidirectional antenna according to claim 1 and 2 is characterized in that: described chokes pipe comprises a metal tube for 1/4 wavelength of low-frequency range center frequency point, and another is the metal tube of 1/4 wavelength of high band center frequency point.
5. the choke structure of omnidirectional antenna according to claim 1 and 2 is characterized in that: the plastic tube of described chokes pipe employing metal material pipe or electroplating surface metal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201804341U CN201758172U (en) | 2010-04-29 | 2010-04-29 | Choking structure of a multi-frequency omni-directional antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201804341U CN201758172U (en) | 2010-04-29 | 2010-04-29 | Choking structure of a multi-frequency omni-directional antenna |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201758172U true CN201758172U (en) | 2011-03-09 |
Family
ID=43645462
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201804341U Expired - Lifetime CN201758172U (en) | 2010-04-29 | 2010-04-29 | Choking structure of a multi-frequency omni-directional antenna |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201758172U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102437413A (en) * | 2011-08-03 | 2012-05-02 | 江苏联海通信技术有限公司 | 4G-oriented plastic ceiling antenna |
-
2010
- 2010-04-29 CN CN2010201804341U patent/CN201758172U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102437413A (en) * | 2011-08-03 | 2012-05-02 | 江苏联海通信技术有限公司 | 4G-oriented plastic ceiling antenna |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110309 |
|
| CX01 | Expiry of patent term |