CN209418765U - A kind of tunable multiband aerial - Google Patents
A kind of tunable multiband aerial Download PDFInfo
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- CN209418765U CN209418765U CN201920202181.4U CN201920202181U CN209418765U CN 209418765 U CN209418765 U CN 209418765U CN 201920202181 U CN201920202181 U CN 201920202181U CN 209418765 U CN209418765 U CN 209418765U
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- tie point
- capacitor
- inductor
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- branch point
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- 239000003990 capacitor Substances 0.000 claims abstract description 40
- 230000001105 regulatory effect Effects 0.000 claims abstract description 16
- 230000005611 electricity Effects 0.000 claims description 5
- 238000004891 communication Methods 0.000 description 5
- 238000013461 design Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000007792 addition Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000010295 mobile communication Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The utility model discloses a kind of tunable multiband aerials, including antenna part, matching network and tuning circuit, the antenna part includes tie point A, tie point B and tie point C, the tie point A is connected with the tuning circuit, the tie point B is connected with the matching network, the matching network other end is connected with load point, the tie point C ground connection, the tuning circuit includes first capacitor device C1, impedance regulating switch, second inductor L2, described one end first capacitor device C1 is connected with the tie point A of the antenna part, its other end is connected with the impedance regulating switch；Described one end second inductor L2 is connected with the tie point A of the antenna part, other end ground connection.The utility model is cooperated by matching network and tuning circuit and adjusts Antenna Impedance Matching；By impedance regulating switch, regulating switch position connects the mode of resonance that different branch points is tuned antenna, to change the working frequency range of antenna, reaches the requirement of multiple frequency ranges of covering LTE/WWAN.
Description
Technical field
The utility model relates to mobile terminal antenna technical fields, and in particular to a kind of tunable multiband aerial.
Background technique
Currently, the appearance of high speed network and all-metal fuselage becomes the development trend of mobile device, wherein antenna is as shifting
The critical component of dynamic terminal communication, communication performance are related to the portability of mobile device.The movement such as mobile phone, tablet computer is set
Standby, inner space is very limited, it is desirable that antenna possesses miniature sizes simultaneously, while circuit structure is simple, and also to have
LTEA network communications capability, since operating frequency of antenna more low dimensional is bigger, in a limited space within to obtain LTE low-frequency range logical
Letter is novel built-in antenna design facing challenges.
Many multifrequency antenna tuning circuits are designed and propose at present, but many designs cannot be met the actual needs,
In disclosed technology, antenna circuit structure is complicated, and designed antenna part volume is larger, higher cost, this make they
Application in ultrathin portable mobile device lacks attraction.
Utility model content
The purpose of this utility model is that being asked for what is occurred in existing mobile communication equipment Antenna Design and application process
Topic, provides a kind of tunable multiband aerial for having the characteristics that communications band is complete, structure is simple, at low cost.
The purpose of this utility model can be realized by the following technical scheme:
A kind of tunable multiband aerial, including antenna part, matching network and tuning circuit, the antenna part include
Tie point A, tie point B and tie point C, the tie point A are connected with the tuning circuit, the tie point B and the matching
Network is connected, and the matching network other end is connected with load point, and the tie point C ground connection, the tuning circuit includes first
Capacitor C1, impedance regulating switch, the second inductor L2, the tie point of the described one end first capacitor device C1 and the antenna part
A is connected, and the other end is connected with the impedance regulating switch；Described one end second inductor L2 and the antenna part
Tie point A is connected, other end ground connection.
Further, the impedance regulating switch is logic control switch comprising total connecting pin RFC, the first branch point
RF1, the second branch point RF2, third branch point RF3 and the 4th branch point RF4.
Further, the total connecting pin RFC and first capacitor device C1 is connected directly, the first branch point RF1
The other end of external first inductor L1, the first inductor L1 are grounded；External second capacitor of second branch point RF2
The other end of C2, the second capacitor C2 are grounded；The external third capacitor C3 of third branch point RF3, the third electricity
The other end of container C3 is grounded；The other end of the 4th branch point RF4 external resistor R, the resistor R are grounded.
Further, the inductance of the first inductor L1 is 2.0 ~ 3.0nH, and the inductance of the second inductor L2 is
The capacitor of 3.0 ~ 4.0nH, the first capacitor device C1 are 8.0 ~ 10.0pF, the capacitor of the second capacitor C2 is 1.0 ~
The capacitor of 3.0pF, the third capacitor C3 are 0.1 ~ 1.0pF, and the resistance of the resistor R is 10.0 ~ 50.0 Ω.
The matching properties of antenna feed impedance, impedance bandwidth are improved by impedance regulating switch and load lamped element
Multiple frequency ranges of LTE/WWAN can be covered.
The utility model have the following advantages that compared with prior art and the utility model has the advantages that
1, the utility model is cooperated by matching network and tuning circuit and adjusts Antenna Impedance Matching；
2, by impedance regulating switch, regulating switch position connects the resonant mode that different branch points is tuned antenna
Formula reaches the requirement of multiple frequency ranges of covering LTE/WWAN to change the working frequency range of antenna；
3, impedance operator, tuning spread bandwidth are adjusted using more grounding technologies and lamped element, solved small size LTE days
The insufficient problem of line low frequency bandwidth；
4, circuit structure is simple, at low cost, practical, is suitably applied in portable communications mobile terminal.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of tunable multiband aerial of the utility model.
Specific embodiment
Present invention will now be described in further detail with reference to the embodiments and the accompanying drawings, but the embodiment of the invention
It is without being limited thereto.
Embodiment: as shown in Figure 1, a kind of tunable multiband aerial, including antenna part 1, matching network 2 and tuning electricity
Road 4, the antenna part 1 include tie point A, tie point B and tie point C, and the tie point A is connected with the tuning circuit 4,
The tie point B is connected with the matching network 2, and 2 other end of matching network is connected with load point 3, and the tie point C connects
Ground, the tuning circuit 4 include first capacitor device C1, impedance regulating switch 41, the second inductor L2, the first capacitor device C1
One end is connected with the tie point A of the antenna part 1, and the other end is connected with the impedance regulating switch 41；Described
Two one end inductor L2 are connected with the tie point A of the antenna part 1, other end ground connection.
The impedance regulating switch 41 is logic control switch comprising total connecting pin RFC, the first branch point RF1, second
Branch point RF2, third branch point RF3 and the 4th branch point RF4, total connecting pin RFC and the first capacitor device C1 are direct
It is connected, the other end ground connection of the external first inductor L1 of the first branch point RF1, the first inductor L1；Described second
The other end of branch point RF2 external second capacitor C2, the second capacitor C2 are grounded；The third branch point RF3 is external
The other end of third capacitor C3, the third capacitor C3 are grounded；The 4th branch point RF4 external resistor R, the electricity
Hinder the other end ground connection of device R.
The inductance of the first inductor L1 is 2.0 ~ 3.0nH, and the inductance of the second inductor L2 is 3.0 ~ 4.0nH,
The capacitor of the first capacitor device C1 is 8.0 ~ 10.0pF, and the capacitor of the second capacitor C2 is 1.0 ~ 3.0pF, the third
The capacitor of capacitor C3 is 0.1 ~ 1.0pF, and the resistance of the resistor R is 10.0 ~ 50.0 Ω.
Certainly, above description is not limitation of the utility model, and the utility model is also not limited to the example above, this skill
The variations, modifications, additions or substitutions that the those of ordinary skill in art field is made in the essential scope of the utility model, also belong to
In the protection scope of the utility model.
Claims (4)
1. a kind of tunable multiband aerial, it is characterised in that: including antenna part, matching network and tuning circuit, the day
Line part includes tie point A, tie point B and tie point C, and the tie point A is connected with the tuning circuit, the tie point B
It is connected with the matching network, the matching network other end is connected with load point, the tie point C ground connection, the tuning electricity
Road includes first capacitor device C1, impedance regulating switch, the second inductor L2, described one end first capacitor device C1 and the antenna part
The tie point A divided is connected, and the other end is connected with the impedance regulating switch；Described one end second inductor L2 with it is described
The tie point A of antenna part is connected, other end ground connection.
2. a kind of tunable multiband aerial according to claim 1, it is characterised in that: the impedance regulating switch is to patrol
Collect control switch comprising total connecting pin RFC, the first branch point RF1, the second branch point RF2, third branch point RF3 and the 4th
Branch point RF4.
3. a kind of tunable multiband aerial according to claim 2, it is characterised in that: total connecting pin RFC and institute
It states first capacitor device C1 to be connected directly, the external first inductor L1 of the first branch point RF1, the first inductor L1's is another
One end ground connection；The other end of the external second capacitor C2 of second branch point RF2, the second capacitor C2 are grounded；It is described
The other end of third branch point RF3 external third capacitor C3, the third capacitor C3 are grounded；The 4th branch point RF4
The other end of external resistor R, the resistor R are grounded.
4. a kind of tunable multiband aerial according to claim 3, it is characterised in that: the electricity of the first inductor L1
Sense is 2.0 ~ 3.0nH, and the inductance of the second inductor L2 is 3.0 ~ 4.0nH, the capacitor of the first capacitor device C1 is 8.0 ~
The capacitor of 10.0pF, the second capacitor C2 are 1.0 ~ 3.0pF, and the capacitor of the third capacitor C3 is 0.1 ~ 1.0pF, institute
The resistance for stating resistor R is 10.0 ~ 50.0 Ω.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920202181.4U CN209418765U (en) | 2019-02-15 | 2019-02-15 | A kind of tunable multiband aerial |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920202181.4U CN209418765U (en) | 2019-02-15 | 2019-02-15 | A kind of tunable multiband aerial |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209418765U true CN209418765U (en) | 2019-09-20 |
Family
ID=67942893
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920202181.4U Expired - Fee Related CN209418765U (en) | 2019-02-15 | 2019-02-15 | A kind of tunable multiband aerial |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209418765U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111987455A (en) * | 2020-07-03 | 2020-11-24 | 深圳市卓睿通信技术有限公司 | Antenna with shared matching of multi-port switch |
| CN112787093A (en) * | 2021-01-04 | 2021-05-11 | 西安闻泰电子科技有限公司 | Antenna assembly and terminal |
| CN114069236A (en) * | 2021-11-22 | 2022-02-18 | 珠海格力电器股份有限公司 | Tuning system, tuning method and electronic equipment |
-
2019
- 2019-02-15 CN CN201920202181.4U patent/CN209418765U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111987455A (en) * | 2020-07-03 | 2020-11-24 | 深圳市卓睿通信技术有限公司 | Antenna with shared matching of multi-port switch |
| CN112787093A (en) * | 2021-01-04 | 2021-05-11 | 西安闻泰电子科技有限公司 | Antenna assembly and terminal |
| CN114069236A (en) * | 2021-11-22 | 2022-02-18 | 珠海格力电器股份有限公司 | Tuning system, tuning method and electronic equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| 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: 20190920 |