CN201022100Y - Plane reverse F antenna group structure - Google Patents
Plane reverse F antenna group structure Download PDFInfo
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- CN201022100Y CN201022100Y CNU200620147403XU CN200620147403U CN201022100Y CN 201022100 Y CN201022100 Y CN 201022100Y CN U200620147403X U CNU200620147403X U CN U200620147403XU CN 200620147403 U CN200620147403 U CN 200620147403U CN 201022100 Y CN201022100 Y CN 201022100Y
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Abstract
A plane reversing-F type antenna stack structure individually comprises a first antenna arranged in one side of a base board end, a second antenna arranged in the central part of the base board end and near one side of the first antenna, and a third antenna arranged in the other base board end and near one side of the second antenna, wherein the first antenna, the second antenna and the third antenna individually have at least an earth board transversely connected with one side of the base board end, a radio frequency board corresponding to the earth board, and a connecting board connecting the earth board with the radio frequency board, thereby connecting the earth boards of the first antenna, the second antenna and the third antenna with the base board for integrating into a non-branched antenna composition. The utility model not only simplifies the installation procedure of a wireless device but also eliminates the influence on the transmitting-receiving efficiency of the wireless device caused by antenna polarization, thereby reaching a comparatively high gain value.
Description
Technical field
The utility model relates to a kind of planar inverted F-shape antenna group structure, especially refer to a kind of number of assembling steps of simplifying wireless device, and eliminate wireless device simultaneously because of the transmitting-receiving effect that antenna polarization influenced, can have the planar inverted F-shape antenna group structure of high relatively yield value (Gain).
Background technology
In " the Improvement type planar inverted F-shape antenna " of known TaiWan, China patent M275550 number, disclosed the basic principle of a kind of PIFA antenna and the general PIFA of increasing frequency range.Because under two kinds of trend of electronic installation minimization and function maximization, not only the electric device content space of being permitted antenna dwindles relatively, and require the antenna radio frequency width of electronic installation constantly to increase, but these two kinds of requirements are contradiction in the design of antenna basically.
In addition, a kind of metallic conductive element of setting up is arranged to change this PIFA antenna opering characteristic of electric apparatus or radiofrequency characteristics near the PIFA antenna; This metallic conductive element itself can not be used as the antenna use, but utilizes the electromagnetic induction between this metallic conductive element and antenna to concern and the opering characteristic of electric apparatus or the radiofrequency characteristics of change antenna, strengthens the radiation characteristic of antenna by this; Make full use of the antenna radio frequency width that the interior limited spatial design of electronic installation goes out broad by this.Because this metallic conductive element individualism is also meaningless, therefore be commonly referred to as parasitic antenna (parasitic element).
United States Patent (USP) the 6th for another example, 973, No. 733 disclosed these antennas, as shown in Figure 9, it is made up of multifrequency PIFA (multi band PIFA) 7 and floating parasitic elements (floating parasiticelement) 71, and wherein this multifrequency PIFA has two radio frequency bands.First frequency range of this PIFA mainly is that numbering 72 end points extend towards the end points direction of numbering 73 in the way, and its effective resonance band is about 1710-1990MHz; Second frequency range then after the end points direction of further parallel numbering 73, is extended a segment distance at the end points that leaves numbering 73, and its effective resonance band is about 824-894MHz.Because this parasitic antenna and PIFA isolate (isolation) on circuit, therefore be referred to as floating parasitic elements.Though this floating parasitic elements is an isolation with PIFA on circuit, but on electromagnetic relationship, this floating parasitic elements is interrelated with PIFA, and especially the electromagnetic relationship of second frequency range of PIFA and this floating parasitic elements is close especially.By voltage standing wave ratio (VSWR) that this patent specification provided as shown in Figure 10, during no floating parasitic elements, the VSWR curve of this PIFA is a solid line 8, and after having set up this floating parasitic elements, the VSWR curve of this PIFA is a dotted line 81, so floating parasitic elements helps to increase the radio frequency performance of PIFA.
Because general antenna is difficult to realize non-polar omni-directional antenna, and general omni-directional antenna of censuring is meant the more unconspicuous antenna of a kind of polarity.Be the influence of the polarity of avoiding antenna for the wireless device receiving and transmitting signal, generally can be in electronic installation connect at least two group antennas from the signal transmitting and receiving element of wireless device in the mode of branch (diversity), this antenna that branches out installs the diverse location at wireless device respectively, even different directions towards each other, use and reduce the influence of antenna polarity the wireless device receiving and transmitting signal.
The utility model content
Main purpose of the present utility model is, can make shared being connected on the substrate of ground plate of first, second and third antenna, and be integrated into the combination of antennas of no branch (diversity), except that the number of assembling steps of simplifying wireless device, also can utilize each antenna to have different polarised directions, eliminate wireless device because of the transmitting-receiving effect that antenna polarization influenced, make antenna sets of the present utility model can have high relatively yield value (Gain).
For achieving the above object, the utility model is a kind of planar inverted F-shape antenna group structure, includes second antenna of first antenna that is arranged at substrate ora terminalis one side, the centre of being located at the substrate ora terminalis and contiguous first antenna, one side respectively and is located at another ora terminalis of substrate and is adjacent to the third antenna of second antenna, one side; And this first, second and third antenna has the ground plate that is laterally connected in substrate ora terminalis one side, the rf board corresponding with ground plate at least respectively, and connects the connecting plate of ground plate and rf board.
Planar inverted F-shape antenna group structure of the present utility model can effectively be improved existing various shortcoming, can make first, the ground plate of second and third antenna is shared and is connected on the substrate, and be integrated into the combination of antennas of no branch (diversity), except that the number of assembling steps of simplifying wireless device, also can utilize each antenna to have different polarised directions, reduce interfering with each other also between each antenna and can receive the effect of drawing on the strong points to offset the weaknesses, eliminate wireless device because of transmitting-receiving effect that antenna polarization influenced, make antenna sets of the present utility model can have high relatively yield value (Gain), and then make the generation of the present utility model can be more progressive, more practical, the needs that more meet the user.
Description of drawings
Fig. 1 is a three-dimensional appearance schematic diagram of the present utility model;
Fig. 2 is the three-dimensional appearance schematic diagram of another angle of the utility model;
Fig. 3 is a specification schematic diagram of the present utility model;
Fig. 4 is an assembled state schematic diagram of the present utility model;
Fig. 5 is the schematic diagram of the utility model in conjunction with electronic installation;
Fig. 6 is the Smith chart of preferred embodiment of the present utility model;
Fig. 7 is the antenna isolation view of preferred embodiment of the present utility model;
Fig. 8 is the schematic diagram of existing PIFA antenna;
Fig. 9 is existing voltage standing wave ratio (VSWR) schematic diagram.
[main element label]
Connecting plate 23
Feed-in conductor 231
Connecting plate 33
Connecting plate 43
Feed-in conductor 431
Central conductor 51,51a, 51b
Metal knitted gauze screen 52,52a, 52b
Multifrequency PIFA 7
Floating parasitic elements 71
End points 72,73
Solid line 8
Dotted line 81
Embodiment
Consult shown in Fig. 1,2 and 3, be respectively the three-dimensional appearance schematic diagram and the specification schematic diagram of the present utility model of three-dimensional appearance schematic diagram of the present utility model, another angle of the utility model.As shown in the figure, the utility model is a kind of planar inverted F-shape antenna group structure (PlanerInverted-F Antenna, PIFA), this structure is made of substrate 1, first antenna 2, second antenna 3 and third antenna 4 at least, can simplify the number of assembling steps of wireless device, and eliminate wireless device simultaneously because of the transmitting-receiving effect that antenna polarization influenced, make antenna sets of the present utility model can have high relatively yield value (Gain).
This first antenna 2 has the ground plate 21 that is laterally connected in aforesaid substrate 1 ora terminalis one side, the rf board 22 corresponding with ground plate 21 at least, and connects the connecting plate 23 of ground plate 21 and rf board 22, the ground plate 21 of this first antenna 2 has earthing conductor 211 in addition, and the connecting plate 23 of this first antenna 1 has feed-in conductor 231, wherein the length of the earthing conductor 211 of this first antenna 1 is 7.2mm for example, and the length of the rf board 22 of this first antenna 1 is 25mm.
This second antenna 3 has the ground plate 31 of the centre that is laterally connected in aforesaid substrate 1 ora terminalis and contiguous first antenna, 2 one sides, the rf board 32 corresponding with ground plate 31 at least, and connects the connecting plate 33 of ground plate 31 and rf board 32, the ground plate 31 of this second antenna 3 has earthing conductor 311 in addition, wherein, the length of the earthing conductor 311 of this second antenna 2 is 14mm for example, and the length of the rf board 32 of this second antenna 3 is 29.5mm.
This third antenna 4 has another ora terminalis that is laterally connected in aforesaid substrate 1 at least and is adjacent to the ground plate 41 of second antenna, 3 one sides, the rf board 42 corresponding with ground plate 41, and connects the connecting plate 43 of ground plate 41 and rf board 42, the ground plate 41 of this third antenna 4 has earthing conductor 411 in addition, and the connecting plate 43 of this third antenna 4 has feed-in conductor 431, wherein, the length of the earthing conductor 411 of this third antenna 4 is 6.2mm for example, and the length of the rf board 42 of this third antenna 4 is 24mm.
Consult Fig. 4 and shown in Figure 5, be respectively assembled state schematic diagram of the present utility model and the utility model schematic diagram in conjunction with electronic installation.As shown in the figure, when the utility model in when utilization, concentric conductor 5 that can be different, 5a, 5b connect first, second and third antenna 2,3,4 respectively, and the concentric conductor 5,5a, the 5b that generally are used to link up signal between mobile communications device and each antenna are a kind of leads that has central conductor 51,51a, 51b and outer layer metal braid shielded net 52,52a, 52b at least.This central conductor 51,51a, 51b be mainly as the signal transmission, and this metal knitted gauze screen 52,52a, 52b mainly are to be used to prevent or to reduce the signal that is transmitted on central conductor 51,51a, the 51b and respond to the extraneous mutual electromagnetic that produces.
When the disclosed PIFA antenna sets of the utility model structure each first, second and third antenna 2,3,4 with this concentric conductor 5,5a, when 5b connects, central conductor 51,51a, 51b is individually fixed in the feed-in conductor 231 of first antenna 2, the rf board 32 of second antenna 3, and on the feed-in conductor 431 of third antenna 4, and this metal knitted gauze screen 52,52a, 52b respectively with the earthing conductor 211 of first antenna 2, the earthing conductor 311 of second antenna 3, and the earthing conductor 411 of third antenna 4 is electrically connected, afterwards this PIFA antenna sets structure is fixed on the appropriate location of electronic installation 6 (as mobile computer), uses and finish setting of the present utility model.
Consult Fig. 6,7 and table 1 shown in, be respectively antenna isolation view and each antenna characteristics table of the present utility model of the Smith chart of preferred embodiment of the present utility model, preferred embodiment of the present utility model.As shown in the figure, by (as shown in Figure 6) shown in the Smith chart of present embodiment, can find that the state that the accepting state of antenna all directions interferes with each other is an acceptable, the resistance value of antenna can be converted in addition the S parameter mutually relatively antenna isolation state (as shown in Figure 7) antenna frequency range of the present utility model as can be known also be acceptable in the isolation between 2.4GHz to 2.5GHz, can use the resistance value of observing present embodiment and know the high frequency the performance whether disclosed design of the utility model is unfavorable for PIFA antenna sets structure by inference by each antenna characteristics table of table 1 in addition.
By Fig. 6,7 and table 1 in can find out that first, second and third antenna 2,3,4 can receive the frequency range between 2.4GHz to 2.5GHz respectively, and can't interfere with each other between each antenna.
Table 1 each antenna characteristics table of the present utility model
| Frequency (MHz) | 2400 | 2420 | 2440 | 2450 | 2460 | 2480 | 2500 | |
| Antenna port mouth intake (dBm) | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |
| First antenna | Total Rad energy (dBm) | -4.369 | -3.890 | -2.903 | -2.669 | -2.737 | -2.805 | -2.912 |
| Usefulness (%) | 36.570 | 40.829 | 51.246 | 54.062 | 53.248 | 52.415 | 51.145 | |
| Gain (dBi) | 0.190 | 1.379 | 3.999 | 3.386 | 4.249 | 3.412 | 3.385 | |
| Second antenna | Total Rad energy (dBm) | -3.060 | -2.834 | -2.969 | -2.890 | -3.062 | -2.943 | -3.062 |
| Usefulness (%) | 49.205 | 52.066 | 50.484 | 51.401 | 49.410 | 50.776 | 49.176 | |
| Gain (dBi) | 1.909 | 2.479 | 2.806 | 3.612 | 2.462 | 2.666 | 1.522 | |
| Third antenna | Total Rad energy (dBm) | -3.337 | -2.792 | -2.817 | -2.958 | -3.119 | -3.476 | -4.564 |
| Usefulness (%) | 46.380 | 52.580 | 52.260 | 50.609 | 48.765 | 44.918 | 34.966 | |
| Gain (dBi) | 2.439 | 2.743 | 2.695 | 3.062 | 2.257 | 2.262 | 1.625 |
In sum, planar inverted F-shape antenna group structure of the present utility model can effectively be improved existing various shortcoming, can make first, the ground plate of second and third antenna is shared and is connected on the substrate, and be integrated into the combination of antennas of no branch (diversity), except that the number of assembling steps of simplifying wireless device, also can utilize each antenna to have different polarised directions, reduce interfering with each other also between each antenna and can receive the effect of drawing on the strong points to offset the weaknesses, eliminate wireless device because of transmitting-receiving effect that antenna polarization influenced, make antenna sets of the present utility model can have high relatively yield value (Gain), and then make the generation of the present utility model can be more progressive, more practical, the needs that more meet the user, really meet the key element of utility application, proposed patent application in accordance with the law.
The above only is a preferred embodiment of the present utility model, can not limit the scope that the utility model is implemented with this.Therefore, all simple equivalent of doing according to claim of the present utility model and description of the present utility model change and revise, and all should belong in the scope that the utility model patent contains.
Claims (13)
1. planar inverted F-shape antenna group structure is characterized in that including:
Substrate;
First antenna has the ground plate that is laterally connected in this substrate ora terminalis one side, the rf board corresponding with this ground plate at least, and connects the connecting plate of this ground plate and this rf board;
Second antenna has the ground plate of the centre that is laterally connected in this substrate ora terminalis and contiguous this first antenna, one side, the rf board corresponding with the ground plate of this second antenna, and the connecting plate of the rf board of the ground plate of this second antenna of connection and this second antenna at least; And
Third antenna has another ora terminalis that is laterally connected in this substrate at least and is adjacent to the ground plate of second antenna, one side, the rf board corresponding with the ground plate of this third antenna, and connects the connecting plate of the rf board of the ground plate of this third antenna and this third antenna.
2. planar inverted F-shape antenna group structure as claimed in claim 1 is characterized in that the length of this substrate is 124mm, is 14mm and substrate comprises the height of each antenna.
3. planar inverted F-shape antenna group structure as claimed in claim 1 is characterized in that the ground plate of this first antenna has earthing conductor.
4. planar inverted F-shape antenna group structure as claimed in claim 3 is characterized in that the earthing conductor length of this first antenna is 7.2mm.
5. planar inverted F-shape antenna group structure as claimed in claim 1 is characterized in that the rf board length of this first antenna is 25mm.
6. planar inverted F-shape antenna group structure as claimed in claim 1 is characterized in that the connecting plate of this first antenna has the feed-in conductor.
7. planar inverted F-shape antenna group structure as claimed in claim 1 is characterized in that the ground plate of this second antenna has earthing conductor.
8. planar inverted F-shape antenna group structure as claimed in claim 7 is characterized in that the earthing conductor length of this second antenna is 14mm.
9. planar inverted F-shape antenna group structure as claimed in claim 1 is characterized in that the rf board length of this second antenna is 29.5mm.
10. planar inverted F-shape antenna group structure as claimed in claim 1 is characterized in that the ground plate of this third antenna has earthing conductor.
11. planar inverted F-shape antenna group structure as claimed in claim 10 is characterized in that the earthing conductor length of this third antenna is 6.2mm.
12. planar inverted F-shape antenna group structure as claimed in claim 1 is characterized in that the rf board length of this third antenna is 24mm.
13. planar inverted F-shape antenna group structure as claimed in claim 1 is characterized in that the connecting plate of this third antenna has the feed-in conductor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200620147403XU CN201022100Y (en) | 2006-10-30 | 2006-10-30 | Plane reverse F antenna group structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200620147403XU CN201022100Y (en) | 2006-10-30 | 2006-10-30 | Plane reverse F antenna group structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201022100Y true CN201022100Y (en) | 2008-02-13 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU200620147403XU Expired - Fee Related CN201022100Y (en) | 2006-10-30 | 2006-10-30 | Plane reverse F antenna group structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201022100Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103348538A (en) * | 2011-02-09 | 2013-10-09 | 株式会社Mobitech | Mimo/diversity antenna for improving the isolation of a specific frequency band |
-
2006
- 2006-10-30 CN CNU200620147403XU patent/CN201022100Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103348538A (en) * | 2011-02-09 | 2013-10-09 | 株式会社Mobitech | Mimo/diversity antenna for improving the isolation of a specific frequency band |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| 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 |