CN201229986Y - Printed bending dipole antenna - Google Patents
Printed bending dipole antenna Download PDFInfo
- Publication number
- CN201229986Y CN201229986Y CNU2008200929889U CN200820092988U CN201229986Y CN 201229986 Y CN201229986 Y CN 201229986Y CN U2008200929889 U CNU2008200929889 U CN U2008200929889U CN 200820092988 U CN200820092988 U CN 200820092988U CN 201229986 Y CN201229986 Y CN 201229986Y
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- CN
- China
- Prior art keywords
- dipole
- antenna
- bending
- printed
- dipole antenna
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- Expired - Lifetime
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Abstract
The utility model discloses a printed bending dipole antenna, and the technical problem to be settled is to provide a printed bending dipole antenna to minimize the antenna to meet the demand of a UHF band wireless system. To settle the problem, the printed bending dipole antenna adopts the following technical proposal: the printed bending dipole antenna comprises a bending dipole printed board; a metal backboard is arranged below the bending dipole printed board; two semi-arms of the dipole on the printed bending dipole board are bent twice along the same direction. Compared with the prior art, the axial size of the dipole is largely reduced by bending the printed bending dipole antenna twice, and the goal of miniaturization is realized; in addition, the metal backboard can properly increase the gain of the antenna to compensate the loss of gain caused by bending; the input impedance is adjusted to around 50 ohm by regulating T adaption short circuit ring.
Description
Technical field
The utility model relates to a kind of printing bending dipole antenna, is applicable to the reception and the emission of microwave signal in 800MHz～1000MHz frequency range, belongs to the short-wave communication tedhnology field.
Background technology
Along with the development that science and technology is maked rapid progress, miniaturization is an important directions of current electronic communication development.Antenna is important components and parts in the wireless communication system, also faces the integrated actual requirement that waits of middle-size and small-sizeization.It is little, simple in structure that dipole antenna has size, and radiance well waits good characteristic, thereby obtained using widely in wireless terminal device.The printed dipole sub antenna greatly reduces cost of manufacture because antenna directly is produced in the printed board, also is convenient to processing in enormous quantities.
The miniaturization meeting brings very big influence for the performance of antenna, mainly is that radiation resistance reduces, and gain reduces.Traditional half-wave dipole antenna has radiance and input impedance characteristic preferably.The half-wave dipole bending can significantly be reduced antenna length, but corresponding variation can take place in impedance operator.Realize that in order to make transmission circuit and antenna impedance matching has two kinds of approach usually: the first adds matching network in transmission circuit, another kind of approach is exactly to adjust the feed form and the position of antenna.The T coupling is a kind of common form in the dipole antenna impedance matching.
Summary of the invention
The technical problems to be solved in the utility model provides a kind of printing bending dipole antenna, to realize the miniaturization demand of uhf band wireless system to antenna.
For solving the problems of the technologies described above, the utility model adopts following technical scheme: a kind of printing bending dipole antenna, comprise the printed board of bending dipole, the printed board of described bending dipole has metal backing, two and half arms of dipole are from T type short-circuited conducting sleeve in the printed board of described bending dipole, extend in opposite direction, bend twice again, constitute the rectangular configuration that disconnects.
90 ° of the each bendings of two and half arms of dipole described in the utility model.
Dipole described in the utility model adopts T coupling feed, and T type short-circuited conducting sleeve is of a size of 15mm * 1mm.
Dipole length described in the utility model is of a size of 40mm～80mm, and width is 20mm～50mm.
The spacing of bending dipole described in the utility model printed board and metal backing is 6mm～30mm.
The pcb board form is made in bending dipole described in the utility model printed board, is of a size of 60mm * 33.5mm, and center of antenna frequency input characteristic impedance is 50 Ω, and the length of adjusting dipole can make antenna work in 800MHz～1000MHz frequency range.
The utility model has compared with prior art significantly reduced the axial dimension of dipole with printing bending dipole antenna by twice bending, to realize the miniaturization target; The gain that the while metal backing can suitably increase antenna bends the gain loss that is brought with compensation; Input impedance mainly matches near 50 ohm by the size of adjusting T coupling short-circuited conducting sleeve.
Description of drawings
Fig. 1 is the three-dimensional model diagram of the utility model printing bending dipole antenna embodiment.
Fig. 2 is the structure chart of the utility model printing bending dipole antenna embodiment.
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing.As shown in Figure 1, 2, the utility model printing bending dipole antenna, comprise bending dipole printed board 1, described bending dipole printed board 1 has metal backing 2, two and half arms of dipole extend in opposite direction from T type short-circuited conducting sleeve 3 in the printed board 1 of described bending dipole, bend twice again, constitute the rectangular configuration that disconnects, 90 ° of the each bendings of two and half arms of described dipole.Metal backing 2 can improve the gain characteristic of antenna, but also can produce considerable influence to impedance operator, the frequency bandwidth characteristics of antenna simultaneously.The printed board 1 of bending dipole is more little with the spacing of metal backing 2, and the bandwidth of antenna is more little.
Dipole described in the utility model adopts T coupling feed, and T type short-circuited conducting sleeve 3 is of a size of 15mm * 1mm.
Dipole length described in the utility model is of a size of 40mm～80mm, and width is 20mm～50mm.
The spacing of bending dipole described in the utility model printed board 1 and metal backing 2 is more suitable between 6mm～30mm, and the too little meeting of spacing narrows down and the practicality variation beamwidth of antenna.The gain of the too big then antenna of spacing reduces and influences performance.When spacing is 12mm, antenna-the 10dB bandwidth is 6MHz, gains to be 1.38dBi.Two and half arms of half-wave dipole are bent twice along same direction, bend 90 ° at every turn to shorten the length of antenna.The impedance matching of antenna realizes that by adopting T coupling feed form the width of short-circuited conducting sleeve is 1mm, and length is between 10mm～18mm.
The pcb board form is made in bending dipole described in the utility model printed board 1, is of a size of 60mm * 33.5mm, and center of antenna frequency input characteristic impedance is 50 Ω, and the length of adjusting dipole can make antenna work in 800MHz～1000MHz frequency range.
When the utility model used, according to the bandwidth requirement of antenna, the distance between selected bending dipole printed panel 1 and the metal backing 2 was fixed the two by four pillars.The internal and external conductor of 50 ohm of radio-frequency (RF) coaxial lines is welded on two pads of T matching structure, and the resonance that the length of adjustment dipole can make antenna is between 800MHz～1000MHz, and the size of adjusting short-circuited conducting sleeve can be adjusted the input impedance of antenna.
Claims (6)
1. a printing bends dipole antenna, comprise the printed board of bending dipole, it is characterized in that: the printed board of described bending dipole has metal backing, two and half arms of dipole are from T type short-circuited conducting sleeve in the printed board of described bending dipole, extend in opposite direction, bend twice again, constitute the rectangular configuration that disconnects.
2. printing bends dipole antenna according to claim 1, it is characterized in that: 90 ° of the each bendings of two and half arms of described dipole.
3. printing bends dipole antenna as claimed in claim 1 or 2, and it is characterized in that: described T type short-circuited conducting sleeve is of a size of 15mm * 1mm.
4. as printing bending dipole antenna as described in the claim 3, it is characterized in that: described dipole length is of a size of 40mm～80mm, and width is 20mm～50mm.
5. as printing bending dipole antenna as described in the claim 4, it is characterized in that: the spacing of printed board of described bending dipole and metal backing is 6mm～30mm.
6. as printing bending dipole antenna as described in the claim 5, it is characterized in that: described center of antenna frequency input characteristic impedance is 50 Ω, and operating frequency of antenna is 800MHz～1000MHz scope.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200929889U CN201229986Y (en) | 2008-04-01 | 2008-04-01 | Printed bending dipole antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200929889U CN201229986Y (en) | 2008-04-01 | 2008-04-01 | Printed bending dipole antenna |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201229986Y true CN201229986Y (en) | 2009-04-29 |
Family
ID=40634929
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200929889U Expired - Lifetime CN201229986Y (en) | 2008-04-01 | 2008-04-01 | Printed bending dipole antenna |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201229986Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111490338A (en) * | 2019-01-22 | 2020-08-04 | 东友精细化工有限公司 | Antenna structure and display device including the same |
| US11424529B2 (en) | 2019-01-22 | 2022-08-23 | Dongwoo Fine-Chem Co., Ltd. | Antenna structure and display device including the same |
-
2008
- 2008-04-01 CN CNU2008200929889U patent/CN201229986Y/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111490338A (en) * | 2019-01-22 | 2020-08-04 | 东友精细化工有限公司 | Antenna structure and display device including the same |
| US11424529B2 (en) | 2019-01-22 | 2022-08-23 | Dongwoo Fine-Chem Co., Ltd. | Antenna structure and display device including the same |
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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 | ||
| CX01 | Expiry of patent term |
Granted publication date: 20090429 |