CN203826556U - Antenna structure of wireless product - Google Patents
Antenna structure of wireless product Download PDFInfo
- Publication number
- CN203826556U CN203826556U CN201420125391.5U CN201420125391U CN203826556U CN 203826556 U CN203826556 U CN 203826556U CN 201420125391 U CN201420125391 U CN 201420125391U CN 203826556 U CN203826556 U CN 203826556U
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- antenna
- capacitor
- wireless product
- antenna structure
- inductance
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- 239000003990 capacitor Substances 0.000 claims abstract description 28
- 239000002184 metal Substances 0.000 claims abstract description 10
- 239000012634 fragment Substances 0.000 claims description 5
- 230000000694 effects Effects 0.000 abstract description 3
- 230000008878 coupling Effects 0.000 description 5
- 238000010168 coupling process Methods 0.000 description 5
- 238000005859 coupling reaction Methods 0.000 description 5
- 241001269238 Data Species 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 239000000203 mixture Substances 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000002238 attenuated effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 230000000191 radiation effect Effects 0.000 description 1
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Abstract
The utility model provides an antenna structure of a wireless product. The antenna structure comprises two antenna portions, wherein the first portion is a loop antenna designed on a PCB, and the second portion is an entire metal casing of the wireless product, and the two portions are connected together through an antenna terminal elastic sheet so as to form a complete antenna. The antenna structure of the utility model is characterized in that high-frequency signals are led onto the metal casing through the antenna terminal elastic sheet; the casing is adopted as one part of the antenna; the shielding effect of the casing can be avoided; and the two portions of the antenna can be excellently matched with each other through adjusting the values of a first inductor L1, a first capacitor C1 and a second capacitor C2.
Description
Technical field
The utility model relates to a kind of project organization of antenna, relates in particular to the antenna structure of wireless product.
Background technology
The tradition type wireless product (such as automobile remote-control key) that is easy to carry, designer consider the cost of product, attractive in appearance, be convenient for carrying etc. under composite factor condition, the size of product is smaller and more exquisite exquisiteness often.Yield to such design environment, the general choice for use of Electronics Engineers is built in loop aerial (PCB LOOP ANT) on the pcb board high-frequency emission antenna as this series products, such antenna is due to the restriction of PCB size, make the radiation effect of this antenna compared with external antenna weak effect, if use plastic shell, the effective remote control distance of product designing can meet product design requirement substantially, if use metal shell, due to the shielding action of metal, cause the high-frequency electromagnetic signal conductively-closed that the loop aerial on pcb board gives off and cause the high-frequency electromagnetic signal radiating greatly to be attenuated by metal shell, so cause the effective remote control distance of product designing to can not meet product design requirement far away, also the event that causes product to be forced to amendment design when such problem has baffled various Electronics Engineers or to give up halfway can be found everywhere.
Utility model content
In order to solve problem in prior art, the utility model provides a kind of antenna structure of wireless product, it comprises two parts antenna, Part I is the loop aerial of design on pcb board, Part II is the whole metal shell of wireless product, this two parts antenna links together by antenna terminal shell fragment, as a whole complete antenna.
As further improvement of the utility model, the end of the antenna of Part II is provided with the ∏ type match circuit being made up of the first inductance L 1, the first capacitor C 1, the second capacitor C 2, the first inductance L 1 between the first capacitor C 1 and the second capacitor C 2, the other end ground connection of the first capacitor C 1, the second capacitor C 2.
As further improvement of the utility model, the ∏ type match circuit that loop aerial part front end look on pcb board is made up of the second inductance L 2, the 4th capacitor C 4, the 5th capacitor C 5 in addition, the second inductance L 2 is arranged between the 4th capacitor C 4 and the 5th capacitor C 5, the other end ground connection of the 4th capacitor C 4, the 5th capacitor C 5.
As further improvement of the utility model, also comprise capacitance C3, C3 one end is connected with the tie point of the second inductance L 2 and the 4th capacitor C 4, the high-frequency signal of other end input.
The beneficial effects of the utility model are:
Actual effect checking:
As shown in Figure 2: take the good garage door remote controller of loop aerial (PCB LOOP ANT) design debug on traditional pcb board, power test: actual test frequency :-30.51dBm@433.9520MHz.
As shown in Figure 3: take the good garage door remote controller of novel practical portable radio products Antenna Design design debug to carry out power test: actual test frequency :-16.70dBm@433.89720MHz.
Relatively find power large more than 10.0dBm, simultaneously under identical test condition, the distance that actual test remote control distance is more original more than one times.
This technological core is, by antenna terminal shell fragment, high-frequency signal is directed to the part (simultaneously having broken through the shielding action of shell) on metal shell and using shell as antenna, this is that traditional Antenna Design technological thought is unexistent, simultaneously by regulating L1, C1, the value of C2 can make the coupling that two parts of antenna are good.
Brief description of the drawings
Fig. 1 is the utility model wireless product Antenna Design connection diagram;
In Fig. 1, the antenna part that A is metal shell, B is the antenna part on PCB, and C is antenna connection terminal, and the antenna place in the lower left corner receives the 433.92MHz high-frequency signal from high-frequency power amplifying circuit output.In figure, the value of each electronic device is exemplified below: C1:1.5PF, L1:15NH, C2:2.7PF, C3:100PF, C4:3.0PF, L2:33NH, C5:1PF;
Fig. 2 is the good garage door remote controller power test of loop aerial (PCB LOOP ANT) design debug of taking on traditional pcb board; 3 meters of measured datas far away of horizontal direction test;
Fig. 3 is the good garage door remote controller power test of loop aerial (PCB LOOP ANT) design debug of taking on traditional pcb board; 3 meters of measured datas far away of vertical direction test;
Fig. 4 takes the good garage door remote controller of novel practical portable radio products Antenna Design design debug to carry out power test; 3 meters of measured datas far away of horizontal direction test;
Fig. 5 takes the good garage door remote controller of novel practical portable radio products Antenna Design design debug to carry out power test; 3 meters of measured datas far away of vertical direction test.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described further.
As shown in Figure 1, portable radio products Antenna Design operation principle is described:
The core of portable radio products Antenna Design is antenna part design, compared with being an entirety with the loop aerial (PCB LOOP ANT) on traditional pcb board, this antenna part is split is divided into two parts, a part for this antenna is the loop aerial (PCB LOOP ANT) of design on pcb board, another part is also as the part of antenna by the whole shell of this product, this two parts antenna links together by the good contact of antenna terminal shell fragment, as a whole complete antenna.
For the coupling that ensures that this two parts antenna can be good, reduce the decay of signal, increase by L1 at the Part II end of antenna, C1, the ∏ type match circuit of C2 composition, regulates L1, C1, the value of C2 can make the coupling that two parts of antenna are good.
In order to ensure the loop aerial part matched well on RF high-frequency signal output and pcb board, reduce the decay of signal, the loop aerial part front end on pcb board has increased by L2, C4, the ∏ type match circuit of C5 composition, regulates L2, C4, the value of C5 can make the coupling that two parts of antenna are good.
C3 is capacitance, avoids the power supply of portable radio products to cause abnormal connection to occur short circuit phenomenon by shell.
As Fig. 2 to Fig. 5, respectively in the horizontal direction, vertical direction is transmitting power relatively, the 13.7dBm that finds that power is large in the horizontal direction, vertical direction power large 10.0dBm, simultaneously under identical test condition, the distance that actual measuring distance is more original more than one times.
This technological core is that part high-frequency signal being directed on metal shell and using shell as antenna by antenna terminal shell fragment is the key (simultaneously having broken through the shielding action of shell) that this technology makes a breakthrough, this is that traditional Antenna Design technological thought is unexistent, simultaneously by regulating L1, C1, it is also this design success or not key that the value of C2 can make the coupling that two parts of antenna are good.
This technology range of application is extremely wide, has great technology to push away
Wide space, is readily solved traditional design bottleneck.
Above content is in conjunction with concrete preferred implementation further detailed description of the utility model, 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, without departing from the concept of the premise utility, can also make some simple deduction or replace, all should be considered as belonging to protection range of the present utility model.
Claims (4)
1. the antenna structure of a wireless product, it is characterized in that: it comprises two parts antenna, Part I is the loop aerial of design on pcb board, Part II is the whole metal shell of wireless product, this two parts antenna links together by antenna terminal shell fragment, as a whole complete antenna.
2. the antenna structure of wireless product according to claim 1, it is characterized in that: the end of the antenna of Part II is provided with the ∏ type match circuit being made up of the first inductance L 1, the first capacitor C 1, the second capacitor C 2, the first inductance L 1 between the first capacitor C 1 and the second capacitor C 2, the other end ground connection of the first capacitor C 1, the second capacitor C 2.
3. the antenna structure of wireless product according to claim 1 and 2, it is characterized in that: the ∏ type match circuit that the loop aerial part front end look on pcb board is made up of the second inductance L 2, the 4th capacitor C 4, the 5th capacitor C 5 in addition, the second inductance L 2 is arranged between the 4th capacitor C 4 and the 5th capacitor C 5, the other end ground connection of the 4th capacitor C 4, the 5th capacitor C 5.
4. the antenna structure of wireless product according to claim 1, is characterized in that: also comprise capacitance C3, C3 one end is connected with the tie point of the second inductance L 2 and the 4th capacitor C 4, and the other end connects the high-frequency signal of input.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420125391.5U CN203826556U (en) | 2014-03-19 | 2014-03-19 | Antenna structure of wireless product |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420125391.5U CN203826556U (en) | 2014-03-19 | 2014-03-19 | Antenna structure of wireless product |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203826556U true CN203826556U (en) | 2014-09-10 |
Family
ID=51482023
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420125391.5U Expired - Fee Related CN203826556U (en) | 2014-03-19 | 2014-03-19 | Antenna structure of wireless product |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203826556U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103928758A (en) * | 2014-03-19 | 2014-07-16 | 深圳市创荣发电子有限公司 | Antenna structure of wireless product |
-
2014
- 2014-03-19 CN CN201420125391.5U patent/CN203826556U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103928758A (en) * | 2014-03-19 | 2014-07-16 | 深圳市创荣发电子有限公司 | Antenna structure of wireless product |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140910 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |