CN205211946U - SAR's hybrid antenna falls - Google Patents
SAR's hybrid antenna falls Download PDFInfo
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- CN205211946U CN205211946U CN201521095623.8U CN201521095623U CN205211946U CN 205211946 U CN205211946 U CN 205211946U CN 201521095623 U CN201521095623 U CN 201521095623U CN 205211946 U CN205211946 U CN 205211946U
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Abstract
The utility model provides a SAR's hybrid antenna falls, walk line, distributing point and ground point including the antenna, the antenna is walked the solenoid and is drawn together the feed part of connecting the distributing point, the grounded part of connecting the ground point to and branch portion, branch portion personally experiences sth. Part of the body and falls the SAR inductor as antenna radiation simultaneously, be equipped with the coupling gap between branch portion and the feed part, be equipped with the coupling gap between the shown feed subtotal grounded part, branch portion keeps apart through lumping capacity cell with the grounded part, and this design makes the adjustable flexibility ratio of antenna promote, can also ensure the low SAR value work of broadband of antenna, has solved the problem of contradiction between the present dull and stereotyped LTE antenna SAR, the antenna covers the frequency band width, and radiant efficiency is high, and its simple structure easily realizes simultaneously, and the R&D cycle is short, low in production cost.
Description
Technical field
The utility model relates to field of antenna, more specifically, relates to and is applied to the dull and stereotyped hybrid antenna falling SAR.
Background technology
Along with the development of information technology, popular when enjoying the various facilities that Wireless Telecom Equipment brings, also the electromagnetic radiation of growing interest wireless communication terminal is on the impact of health.In research and development and the field tests of dull and stereotyped notebook antenna, antenna works teacher is except paying close attention to TRP(isotropically radiated power), TIS(total omnidirectional sensitivity), RL(return loss), Efficiency(efficiency) beyond, also focus on very very much another index---SAR(SpecificAbsorptionRate).
The size of SAR indicates the size of electromagnetic radiation of mobile telephone to Health Impact.In the design of antenna, main what pay close attention to is the impact of electromagnetic radiation on human head of wireless communication terminal.The size of SAR value is closely related with the radiant power of mobile phone, and the size of usual SAR value is directly proportional to TRP, and in the design, TRP and SAR be conflict inherently, therefore, in the design, need balance both relations well.
In engineering test, whether the peak value that SAR value mainly tests it exceeds standard, and the principle therefore reducing SAR value is how homogeneous current distribution.In Terminal Design, SAR is a comprehensive problem, should require that when designing antenna high TRP has low SAR value again, these needs have good assessment at the overall design initial stage to antenna, and especially the placement of PCB fabric swatch, aerial position and peripheral devices has larger impact to antenna.
In Terminal Design, a lot of method is had to reduce SAR value.At the design initial stage, first require fabric swatch engineer, design that structural engineer takes into full account PCB, the position of antenna, speaker, micro, vibrator, battery etc. affect large device reasonable placement on antenna, SAR value can be reduced by the focus on debugging PCB in the design process; The employing PIFA antenna relatively commonly used when designing antenna, it has lower SAR value, this is because have larger region between PIFA antenna and PCB and and PCB form loop, electric current can distribute more equably, and such SAR just can not produce stronger Peak value; And for hybrid antenna, its design becomes a difficult point, phase after design, SAR value can be reduced, from theory analysis by reducing transmitting power, the transmitting power of mobile phone reduces 1dB, the large appointment of SAR numerical value reduces 0.3W/Kg, and they are directly proportional, but after reduction transmitting power, the emission effciency of mobile phone being affected, while therefore needing to provide a kind of radiant power ensureing mobile phone, at utmost can reduce the antenna of SAR.
Utility model content
In view of this, the technical problems to be solved in the utility model is to provide a kind of wide band hybrid antenna falling SAR.
The utility model adopts the antenna of couple feed structure, and antenna branch part, as falling SAR inductor, the feed part of antenna with fall SAR inductor part and isolated by couple feed, adjusts its distance of reaction by adjustment cabling.The utility model improves the flexibility ratio of the adjustable of antenna to a great extent, can also ensure the low SAR value work of the broadband of antenna simultaneously.
Can automatically reduce its transmitting power at certain distance internal induction to having during object when falling SAR inductor, thus reduce SAR value, so both ensure that the radiance TRP of antenna in turn ensure that low human absorptivity.
For solving the problems of the technologies described above, the technical scheme that the utility model provides is: a kind of hybrid antenna falling SAR, comprise antenna cabling, distributing point and earth point, described antenna cabling comprises the feed part connecting distributing point, the grounded part connecting earth point, and component, described component is simultaneously as antenna radiator with fall SAR inductor, described component is provided with the gap that is coupled between dividing with current feed department, shown in be provided with between feed part and grounded part coupling gap, described component and grounded part are isolated by lumped capacitive elements.
Described component extends the first short-circuit line and the second short-circuit line respectively to the direction of feed part and grounded part.
Described component comprises the first branch line and the second branch line, and described first branch line is longer than the second branch line.
Described first short-circuit line and the second short-circuit line are drawn by the junction of the second branch line and the first branch line.
Described current feed department divides and comprises the first feed line and the second feed line, and described first feed line is the double-bending structure of component dorsad, and described second feed line is in opposite direction bending structure.
Described grounded part draws passive antenna to component.
Also comprise the sensor feed line of cable line distributing point being connected to equipment mainboard and sensor module component being connected to equipment mainboard end.
Compared with prior art, the utility model tool has the following advantages:
The utility model provides a kind of hybrid antenna falling SAR, have employed and fall SAR inductor and the two-in-one scheme of feed part to reduce SAR value, while solving SAR problem, improve the flexibility ratio of the adjustable of antenna, also improve the bandwidth of antenna simultaneously.At earth point and fall between SAR inductor and add lumped capacity, ensure that the normal work of sensor on the one hand, also reduce the impact of sensor on antenna performance on the other hand.This design makes the adjustable flexibility ratio of antenna promote, and can also ensure the low SAR value work of the broadband of antenna, solve the problem of contradiction between current dull and stereotyped LTE antenna SAR; Antenna cover bandwidth, radiation efficiency is high, and its structure is simple simultaneously, and be easy to realize, the R&D cycle is short, and production cost is low.
Accompanying drawing explanation
Fig. 1 is the hybrid antenna structure view that SAR falls in the utility model embodiment;
Fig. 2 is the standing wave pattern of the utility model embodiment.
Wherein, 1 is grounded part, and 2 is the first feed line, and 3 is the second feed line, and 4 is the first branch line, and 5 is the second branch line, and 6 is the first short-circuit line, and 7 is the second short-circuit line, and 8 is passive antenna, and A is distributing point, and B is earth point, and C is lumped capacitive elements.
Embodiment
The utility model to be explained in further detail below in conjunction with accompanying drawing and embodiment for the ease of it will be appreciated by those skilled in the art that.
As shown in Figure 1, fall a hybrid antenna of SAR, be applied to the electronic equipment such as flat board, notebook, comprise pcb board, the antenna cabling be arranged on pcb board, the cable line connecting the feed part of antenna cabling be connected the sensor feed line falling SAR inductor, cable line and the tie point distributing point A with antenna cabling, earth point B, lumped capacity C, wherein antenna cabling comprises feed part, component, grounded part 1, short-circuit line and passive antenna 8.Described current feed department divides and comprises the first feed line 2 and the second feed line 3, and component comprises the first branch line 4 and the second branch line 5, and short-circuit line comprises the first short-circuit line 6 and the second short-circuit line 7.First branch line 4 and the second branch line are arranged on top, first branch line 4 is longer than the second branch line 5, the second short-circuit line is extended to feed part in the junction of the first branch line and the second branch line, the first short-circuit line is extended to grounded part, grounded part is located at bottom, and extending passive antenna 8, passive antenna is located between the first short-circuit line 6 and the second short-circuit line 7.Described current feed department divides and to be arranged between component and grounded part and to form the gap that is coupled respectively with component and grounded part, wherein the first feed line is the double-bending structure of the first branch line dorsad, second current feed department is divided into and the reciprocal bending structure of the first feed line, and the second feed part is between the second short-circuit line and grounded part and form with both the gap that is coupled.
Component falls SAR inductor as what fall SAR device and sensor module, arranges tie point connect sensor module at the end of its extension first short-circuit line 6, and between this end and grounded part, arranges lumped capacitive elements isolate.
The basic composition form of antenna is the cable line+sensor feed line of PCB+ Copper Foil form+antenna feed.Antenna body is printed on 0.4mm × 10mm × 75mmFR4PCB plate.During utility model works, the feed cable line that antenna connects distributing point is connected to host module by IPEX head, connects the sensor feed line access sensor module end of component.Antenna adopts couple feed form to promote the bandwidth of operation of antenna, comprises antenna cabling, distributing point A, earth point B, lumped capacity C, feed part, component, short-circuit line and parasitic 8.The coupling component of antenna, as falling SAR inductor, by sensor feed line access sensor module end, improves the flexibility ratio of the adjustable of antenna, also improves the bandwidth of antenna simultaneously while solving SAR problem.Because the operation principle of sensor itself directly can not be connected with ground, so isolated by a lumped capacity C between the sensor feed line leading point of the component of grounded part and antenna, ensure that the normal work of sensor module on the one hand, reduce sensor to the impact of antenna body, also reduce the impact of sensor module on antenna performance on the other hand.Fall by adjustment the distance of reaction that SAR inductor and component can regulate sensor, ensure the normal work of sensor.During Antenna Operation, feed part and short-circuit line 6 define a circulation, can produce a resonance at front end 2.4GHZ place.Long branch line 4 can produce a double resonance at low frequency end 0.8GHZ in conjunction with the first short-circuit line 6, can regulate low frequency bandwidth by the width adjusting the first branch line 4.The secondary mould of the first longer in addition branch line 4 will at front end 1.9GHZ place's generation resonance, first feed line 2 produces a resonance in 0.9GHz, simultaneously by adopting the form of double-bending to change the first feed line 2 and the first branch line 4, spacing between first feed line 2 and the second feed line 3 adjusts its distributed inductance electric capacity, make it reach best impedance matching, make low frequency bandwidth cover 0.7-0.96GHz.Shorter the second branch line 5 in 1.8GHZ by generation resonance.Resonance point and the bandwidth thereof of secondary mould can also be adjusted by the double-bending structure of the first feed line 2.Regulate the bending size of the length of the second short-circuit line 7 and the second feed line 3 can increase the bandwidth of high frequency.Simultaneously parasitic cabling 8 also can produce at high frequency the bandwidth that a resonance broadens high frequency further and makes high frequency bandwidth cover 1.71-2.7GHz.Comprehensively above-mentioned produced multiple resonance, the beamwidth of antenna finally can cover LTE/WWAN frequency range, comprise: LTE700 (698-878MHZ), LTE2300 (2300-2400MHZ), LTE2500 (2500-2690MHZ) and WWAN frequency range: 824-960MHZ(GSM850/900), 1710-2170MHZ (GSM1800/1900/UMTS), experimental result as shown in Figure 2.
The hybrid antenna falling SAR disclosed in the present embodiment, have employed and fall SAR inductor and the two-in-one scheme of feed part to reduce SAR value, while solving SAR problem, improve the flexibility ratio of the adjustable of antenna, also improve the bandwidth of antenna simultaneously.At earth point and fall between SAR inductor and add lumped capacity, ensure that the normal work of sensor on the one hand, also reduce the impact of sensor on antenna performance on the other hand.This design makes the adjustable flexibility ratio of antenna promote, and can also ensure the low SAR value work of the broadband of antenna, solve the problem of contradiction between current dull and stereotyped LTE antenna SAR; Antenna cover bandwidth, radiation efficiency is high, and its structure is simple simultaneously, and be easy to realize, the R&D cycle is short, and production cost is low.
In the utility model, the not concrete functional module introduced all can adopt ripe functional module of the prior art, the sensor module etc. of such as equipment mainboard end.
Be more than wherein specific implementation of the present utility model, it describes comparatively concrete and detailed, but therefore can not be interpreted as the restriction to the utility model the scope of the claims.It should be pointed out that for the person of ordinary skill of the art, without departing from the concept of the premise utility, can also make some distortion and improvement, these apparent replacement forms all belong to protection range of the present utility model.
Claims (7)
1. one kind is fallen the hybrid antenna of SAR, comprise antenna cabling, distributing point and earth point, it is characterized in that: described antenna cabling comprises the feed part connecting distributing point, the grounded part connecting earth point, and component, described component is simultaneously as antenna radiator with fall SAR inductor, described component is provided with the gap that is coupled between dividing with current feed department, shown in be provided with between feed part and grounded part coupling gap, described component and grounded part are isolated by lumped capacitive elements.
2. the hybrid antenna falling SAR according to claim 1, is characterized in that: described component extends the first short-circuit line and the second short-circuit line respectively to the direction of feed part and grounded part.
3. the hybrid antenna falling SAR according to claim 2, it is characterized in that: described component comprises the first branch line and the second branch line, described first branch line is longer than the second branch line.
4. the hybrid antenna falling SAR according to claim 3, is characterized in that: described first short-circuit line and the second short-circuit line are drawn by the junction of the second branch line and the first branch line.
5. the hybrid antenna falling SAR according to claim 1, it is characterized in that: described current feed department divides and comprises the first feed line and the second feed line, described first feed line is the double-bending structure of component dorsad, and described second feed line is in opposite direction bending structure.
6. the hybrid antenna falling SAR according to claim 1, is characterized in that: described grounded part draws passive antenna to component.
7. the hybrid antenna falling SAR according to claim 4 ~ 6 any one, is characterized in that: the sensor feed line also comprising cable line distributing point being connected to equipment mainboard and sensor module component being connected to equipment mainboard end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521095623.8U CN205211946U (en) | 2015-12-25 | 2015-12-25 | SAR's hybrid antenna falls |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521095623.8U CN205211946U (en) | 2015-12-25 | 2015-12-25 | SAR's hybrid antenna falls |
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| Publication Number | Publication Date |
|---|---|
| CN205211946U true CN205211946U (en) | 2016-05-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521095623.8U Expired - Fee Related CN205211946U (en) | 2015-12-25 | 2015-12-25 | SAR's hybrid antenna falls |
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| CN (1) | CN205211946U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110323573A (en) * | 2019-05-14 | 2019-10-11 | 惠州Tcl移动通信有限公司 | Antenna module and communication device |
-
2015
- 2015-12-25 CN CN201521095623.8U patent/CN205211946U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110323573A (en) * | 2019-05-14 | 2019-10-11 | 惠州Tcl移动通信有限公司 | Antenna module and communication device |
| US11955694B2 (en) | 2019-05-14 | 2024-04-09 | Huizhou Tcl Mobile Communication Co., Ltd. | Antenna component and communication device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: SAR's hybrid antenna falls Effective date of registration: 20171208 Granted publication date: 20160504 Pledgee: Pudong Shanghai Development Bank Limited by Share Ltd. Huizhou branch Pledgor: Huizhou Speed Wireless Technology Co.,Ltd. Registration number: 2017440000171 |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160504 Termination date: 20211225 |