CN201282190Y - Small medium plane inverse F antenna using cascade monopole power feed - Google Patents
Small medium plane inverse F antenna using cascade monopole power feed Download PDFInfo
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- CN201282190Y CN201282190Y CNU2008202082928U CN200820208292U CN201282190Y CN 201282190 Y CN201282190 Y CN 201282190Y CN U2008202082928 U CNU2008202082928 U CN U2008202082928U CN 200820208292 U CN200820208292 U CN 200820208292U CN 201282190 Y CN201282190 Y CN 201282190Y
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- planar inverted
- ladder
- inverted
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Abstract
The utility model relates to a antenna with a small inverted F shaped media planar by utilizing stepped monopole feeding. The antenna with a small inverted F shaped media planar comprises a resonating part, a short-circuit part and a stepped monopole feeding part, wherein, the resonating part is connected with the short-circuit part, and the stepped monopole feeding part stimulates the planar inverted-F antenna through electromagnetic coupling. The utility model adopts the technology that the stepped monopole feeding part stimulates the planar inverted-F antenna, which is applied on a high media base plate, and the impedance band width of the inverted-F antenna can be remarkably improved, so that the small media planar inverted-F antenna has high radiation efficiency in the range of the working band frequency, the volume of the antenna is small, the manufacture is easy, the manufacturing cost is low, and the antenna has high practicability.
Description
Technical field
The utility model technology belongs to field of wireless communication, is specifically related to a kind of little media plane inverse-F antenna that utilizes ladder one pole feed.
Background technology
At present, miniature antenna generally has been used in wireless device, especially in the small hand-held communication product.The miniature antenna form can be types such as monopole, dipole, spiral.Because the miniature antenna size is little, institute takes up space little, so miniature antenna has obtained more employing in the use of small sized product.Yet the resonance length of antenna is half wavelength (0.5 λ).This is because the intrinsic physical restriction of antenna that large-size antennae relates to.In order to overcome this problem, many researchs are planned and be conceived to reduce the size of antenna, called after miniature antenna for this reason.Wherein a kind of solution commonly used just is to use the high-k substrate to dwindle the size of antenna.Corresponding to the dielectric constant of substrate, this technology can effectively reduce the size of antenna.Dielectric constant is high more, just can reduce the size of antenna as much as possible.But the major defect of this technical scheme is to cause reducing and the increase of cost of bandwidth.
The another kind of miniature antenna technology that is suitable for is so-called printing planar inverted-F antenna (PIFAPatchedInverse F Antenna).This class antenna has the short circuit pin that is connected with antenna resonance part, and this short circuit pin contacts with ground.The characteristics of PIFA antenna are that volume is little, and are simple in structure, and have satisfactory radiation characteristic.But, in recent portable equipment, people wish to have littler PIFA antenna so that be loaded into device interior.Usually, the PIFA antenna is produced on the high dielectric constant material is on the printed circuit board (PCB) of substrate in some people suggestion.Have the high-k base printed circuit board to exist, very little size can be realized and implement to the PIFA antenna like a cork.Yet it also has a common shortcoming, makes bandwidth of operation reduce when using the high-k substrate.
The utility model content
Can cause reducing and the increase of cost of bandwidth when solving the size that the employing high-k substrate that exists in the prior art dwindles antenna, adopt the printing inverse-F antenna, and the PIFA antenna is produced on the high dielectric constant material is on the printed circuit board (PCB) of substrate the time, technical problem such as can make that bandwidth of operation reduces, the utility model provides a kind of little medium PIFA antenna that utilizes ladder one pole feed.
The technical scheme that the prior art problem that solves the utility model is adopted is for providing a kind of little media plane inverse-F antenna that utilizes ladder one pole feed, described planar inverted-F antenna comprises resonance part, short circuit portion and ladder one pole current feed department, wherein, described resonance part is connected with described short circuit portion, and described ladder one pole current feed department encourages described planar inverted-F antenna by non-contacting electromagnetic coupled.
According to a preferred version of the present utility model: described ladder one pole current feed department is a ladder one pole feed line.
According to a preferred version of the present utility model: the one pole strip line comprises the first one pole strip line and the second one pole strip line in the described ladder one pole feed line, the described first one pole strip line and described second the one pole strip line is stepped arranges.
According to a preferred version of the present utility model: described resonance part is the length cell of a described planar inverted-F antenna operating frequency of control.
According to a preferred version of the present utility model: described resonance part comprises first length cell and second length cell, and described first length cell is a rectangle, and length is 1/4 wavelength; Described second length cell is a snake, and length is 1/4 wavelength.
According to a preferred version of the present utility model: described short circuit portion is a short-circuit line.
According to a preferred version of the present utility model: described short-circuit line one end links to each other with described resonance part, and the other end is connected with printed circuit board (PCB).
According to a preferred version of the present utility model: the described electric wire of falling F is installed on the circuit board.
According to a preferred version of the present utility model: the dielectric constant of described circuit board is ε r=20.
The utility model technology adopts and use " ladder one pole feed " de-energisation planar inverted F-shape antenna technology on high medium substrate, can significantly improve the impedance bandwidth of described inverted F shaped antenna, make in the frequency band range of its work and have high radiation efficiency, this antenna volume is little, be easy to make, production cost is low, has very high practicality.
Description of drawings
Fig. 1. the utility model utilizes little medium inverse-F antenna (PIFA antenna) structural representation of ladder one pole feed.
Fig. 2 the utility model utilizes little medium inverse-F antenna (PIFA antenna) partial enlarged drawing of ladder one pole feed.
Embodiment
Below in conjunction with accompanying drawing the utility model is described:
See also Fig. 1 the utility model and utilize little medium inverse-F antenna (PIFA antenna) structural representation of ladder one pole feed and little medium inverse-F antenna (PIFA antenna) partial enlarged drawing that Fig. 2 the utility model utilizes ladder one pole feed.Described as shown in FIG. planar inverted-F antenna 110 comprises resonance part, short circuit portion and ladder one pole current feed department, and wherein, described resonance part is connected with described short circuit portion, and described ladder one pole current feed department encourages described planar inverted-F antenna 110 by electromagnetic coupled.
In optimal technical scheme of the present utility model, the one pole of ladder described in figure current feed department is a ladder one pole feed line 101, is the feeder equipment in the described inverse-F antenna 110.The one pole strip line comprises the first one pole strip line 102 and the second one pole strip line 103 in the described ladder one pole feed line 101, the described first one pole strip line 102 and the described second one pole strip line, 103 stepped arranging.The wherein said first one pole strip line 102 is provided with in the bottom, and the described second one pole strip line 103 is on the top, and the way of such feeder line stairstepping can possess advantage on the adjusting antenna feed impedance, thereby pursues a better impedance matching of 50 ohm.Described resonance part is the length cell of described planar inverted-F antenna 110 operating frequencies of control, and it comprises first length cell 104 and second length cell 105, and described first length cell 104 is a rectangle, and length is 1/4 wavelength; Described second length cell 105 is a snake, and length is 1/4 wavelength, and the line structure that described second length cell 105 wriggles provides a frequency tuning compensation flexibly for the material tolerances of medium substrate.Described short circuit portion is a short-circuit line 106, and described short-circuit line 106 1 ends link to each other with described resonance part, and the other end is by earth terminal 108 and ground short circuit, and effect is the characteristic that the antenna reduction is provided for described inverse-F antenna 110, also is to provide a DC earthing for antenna.Described inverse-F antenna 110 is welded on the circuit board 107 that dielectric constant is ε r=20.
The utility model technology combines the small-sized that PIFA antenna and high-k substrate have been realized antenna.But when make described inverse-F antenna 110 on the high-k substrate, impedance bandwidth is very narrow, normally less than 1%.Therefore, a technical scheme that increases bandwidth is suggested in the utility model.This is a ladder one pole coupling feed, and this feed line is printed on the vertical component of substrate with a strip metal strip line 109.Strip line 109 does not connect and touches antenna in technical solutions of the utility model.Be to utilize the electromagnetic coupled technology, come active antenna.After the feeding classification of using this technical scheme, described inverse-F antenna 110 can produce 4% impedance bandwidth.The antenna gain of the highest IdB and 52% radiation efficiency.In the relevant resonance frequency of 2.45GHZ, the size of antenna has only 9.3 (L) x 3 (W) x 1.5 (T) mm
3[0.076 λ (L) x 0.024 λ (W) x 0.012 λ (T) mm
3].
The utility model technology adopts and use " ladder one pole feed " de-energisation planar inverted F-shape antenna technology on high medium substrate, can significantly improve the impedance bandwidth of described inverted F shaped antenna, make in the frequency band range of its work and have high radiation efficiency, this antenna volume is little, be easy to make, production cost is low, has very high practicality.
Above content be in conjunction with concrete preferred implementation to further describing that the utility model is done, can not assert that concrete enforcement of the present utility model is confined to these explanations.For the utility model person of an ordinary skill in the technical field, under the prerequisite that does not break away from the utility model design, can also make some simple deduction or replace, all should be considered as belonging to protection range of the present utility model.
Claims (9)
1. little media plane inverse-F antenna that utilizes ladder one pole feed, it is characterized in that: described planar inverted-F antenna comprises resonance part, short circuit portion and ladder one pole current feed department, wherein, described resonance part is connected with described short circuit portion, and described ladder one pole current feed department encourages described planar inverted-F antenna by electromagnetic coupled.
2. according to the described planar inverted-F antenna of claim 1, it is characterized in that: described ladder one pole current feed department is a ladder one pole feed line (101).
3. according to the described planar inverted-F antenna of claim 2, it is characterized in that: the one pole strip line comprises the first one pole strip line (102) and the second one pole strip line (103) in the described ladder one pole feed line (101), described first one pole strip line (102) and stepped the arranging of the described second one pole strip line (103).
4. according to the described planar inverted-F antenna of claim 1, it is characterized in that: described resonance part is the length cell of a described planar inverted-F antenna operating frequency of control.
5. according to the described planar inverted-F antenna of claim 4, it is characterized in that: described resonance part comprises first length cell (104) and second length cell (105), and described first length cell (104) is a rectangle, and length is 1/4 wavelength; Described second length cell (105) is a snake, and length is 1/4 wavelength.
6. according to the described planar inverted-F antenna of claim 1, it is characterized in that: described short circuit portion is short-circuit line (106).
7. according to the described planar inverted-F antenna of claim 6, it is characterized in that: described short-circuit line (106) one ends link to each other with described resonance part, and the other end is connected with circuit board (107).
8. according to the described planar inverted-F antenna of claim 1, it is characterized in that: the described electric wire of falling F (101) is installed on the circuit board (107).
9. described according to Claim 8 planar inverted-F antenna is characterized in that: the dielectric constant of described circuit board (107) is ε
r=20.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202082928U CN201282190Y (en) | 2008-09-04 | 2008-09-04 | Small medium plane inverse F antenna using cascade monopole power feed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202082928U CN201282190Y (en) | 2008-09-04 | 2008-09-04 | Small medium plane inverse F antenna using cascade monopole power feed |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201282190Y true CN201282190Y (en) | 2009-07-29 |
Family
ID=40929056
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008202082928U Expired - Fee Related CN201282190Y (en) | 2008-09-04 | 2008-09-04 | Small medium plane inverse F antenna using cascade monopole power feed |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201282190Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104795629A (en) * | 2015-04-23 | 2015-07-22 | 深圳市共进电子股份有限公司 | Microstrip antenna |
| CN106340714A (en) * | 2015-07-10 | 2017-01-18 | 厦门泽科软件科技有限公司 | Ultra-small ultrahigh frequency antenna |
| CN107394383A (en) * | 2017-08-09 | 2017-11-24 | 歌尔科技有限公司 | Groove gap planar inverted L antennas and blue-teeth communication equipment |
-
2008
- 2008-09-04 CN CNU2008202082928U patent/CN201282190Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104795629A (en) * | 2015-04-23 | 2015-07-22 | 深圳市共进电子股份有限公司 | Microstrip antenna |
| CN106340714A (en) * | 2015-07-10 | 2017-01-18 | 厦门泽科软件科技有限公司 | Ultra-small ultrahigh frequency antenna |
| CN107394383A (en) * | 2017-08-09 | 2017-11-24 | 歌尔科技有限公司 | Groove gap planar inverted L antennas and blue-teeth communication equipment |
| CN107394383B (en) * | 2017-08-09 | 2023-09-15 | 歌尔科技有限公司 | Slot plane inverted L antenna and blue tooth communication device |
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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: 20090729 Termination date: 20120904 |