CN206412480U - A kind of antenna double work frequency switching circuit and electronic equipment - Google Patents
A kind of antenna double work frequency switching circuit and electronic equipment Download PDFInfo
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- CN206412480U CN206412480U CN201621427020.8U CN201621427020U CN206412480U CN 206412480 U CN206412480 U CN 206412480U CN 201621427020 U CN201621427020 U CN 201621427020U CN 206412480 U CN206412480 U CN 206412480U
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Abstract
The utility model discloses a kind of antenna double work frequency switching circuit and electronic equipment, and the circuit includes：Switching branches, the first matching branch road and the second matching branch road；The switching branches, the switch controlling signal for receiving control chip transmission, and first match circuit or second match circuit are accessed according to the switch controlling signal；The switch controlling signal is determined by the control chip according to Antenna Operation state；The switching branches use single-pole single-throw switch (SPST)；The first matching branch road, for the working frequency of antenna to be switched in into the first working frequency；The second matching branch road, for the working frequency of the antenna to be switched in into the second working frequency.The technical solution of the utility model is by being realized the Access Control of matching branch road by the switching branches constituted of single-pole single-throw switch (SPST), so as to simplify circuit structure, saves PCB space, introducing loss is small, and cost is low, and the control of the switching branches is simple.
Description
Technical field
The utility model is related to electric and electronic technical field, and in particular to a kind of antenna double work frequency switching circuit and
Electronic equipment.
Background technology
In recent years, continuing to develop with Power Electronic Technique, various electronic apparatus applications and give birth to, especially bluetooth/
WIFI products.In bluetooth/WIFI products, antenna is often conformal with structural housing.Thus, it is desirable to outside the structure conformal with antenna
Shell needs to meet foldable or mobile requirement, to adapt to different application scenarios, for example：Not only it can wear but also clothing can be clipped in
Bluetooth earphone on clothes.So require antenna can to reach the duplexing working frequency of antenna in two kinds of different working conditions
Impedance matching in handoff procedure.In the prior art, as shown in figure 1, realizing operating frequency of antenna using hilted broadsword two-way switch
Switching, the Circuit Matching circuit element is more, takes printed circuit board (Printed Circuit Board, abbreviation PCB) space
It is larger, and two RF switches are operated in series circuit, can introduce larger loss, cost is higher.
Utility model content
The utility model provides a kind of antenna double work frequency switching circuit and electronic equipment, to solve prior art
Middle use hilted broadsword two-way switch realizes that matching circuit element is more in the switching circuit of operating frequency of antenna, take PCB space compared with
Greatly, and two RF switches are operated in series circuit, larger loss, the problem of cost is higher can be introduced.
According to one side of the present utility model there is provided a kind of antenna double work frequency switching circuit, the circuit includes：
Switching branches, the first matching branch road and the second matching branch road；
The switching branches, the switch controlling signal for receiving control chip transmission, and according to the switch control letter
Number access first match circuit or second match circuit；The switch controlling signal is by the control chip according to day
Line working condition is determined；The switching branches use single-pole single-throw switch (SPST)；
The first matching branch road, for the working frequency of antenna to be switched in into the first working frequency；
The second matching branch road, for the working frequency of the antenna to be switched in into the second working frequency.
According to other side of the present utility model there is provided a kind of electronic equipment, the electronic equipment includes：As described above
Antenna double work frequency switching circuit.
The beneficial effects of the utility model are：This antenna double work frequency switching circuit and electronics of the present utility model
Equipment, by realizing the Access Control of matching branch road by the switching branches constituted of single-pole single-throw switch (SPST).Because this practicality is new
Type circuit structure design is simple, so as to occupy, PCB space is smaller, and cost is low, and because switch of the present utility model is using in parallel
In connection access circuit, so that the introducing loss of switching branches is smaller, and the control of the switching branches is relatively simple, from
And reduce the control difficulty of integrated circuit.
Brief description of the drawings
Fig. 1 is a kind of antenna double work frequency switching circuit figure in the prior art；
Fig. 2 is a kind of antenna double work frequency switching circuit structural representation of the utility model one embodiment；
Fig. 3 is the structured flowchart of a kind of electronic equipment of the utility model one embodiment；
Fig. 4 is a kind of Γ types antenna double work frequency switching circuit figure of the utility model one embodiment；
Fig. 5 is the another of the utility model one embodimentType antenna double work frequency switching circuit figure；
Fig. 6 is bluetooth/WIFI products product form signal in the case where opening working condition of the utility model one embodiment
Figure；
Fig. 7 is bluetooth/WIFI products product form signal under folding work state of the utility model one embodiment
Figure；
Fig. 8 be the utility model one embodiment a kind of antenna double work frequency switching circuit in first matching branch road
A kind of 202 circuit diagrams；
Fig. 9 be the utility model one embodiment a kind of antenna double work frequency switching circuit in first matching branch road
202 another circuit diagrams；
Figure 10 be the utility model one embodiment a kind of antenna double work frequency switching circuit in first matching branch road
202 another circuit diagram；
Figure 11 be the utility model one embodiment a kind of antenna double work frequency switching circuit in first matching branch road
202 another circuit diagram；
1st, antenna；2nd, collapsible enclosure；3rd, drain pan.
Embodiment
Antenna double work frequency switching circuit in the prior art realize in circuit usually require meet it is foldable or
Mobile requirement, to adapt to different application scenarios.But realize Antenna Operation frequency using hilted broadsword two-way switch in the prior art
The switching of rate, the Circuit Matching circuit element is more, and occupancy PCB space is larger, and two RF switches are operated in series circuit
In, larger loss can be introduced, cost is higher.
Design concept of the present utility model is：Cutting for operating frequency of antenna is realized for existing utilization hilted broadsword two-way switch
Change, the Circuit Matching circuit element is more, occupancy PCB space is larger, and two RF switches are operated in series circuit, can be drawn
Enter larger loss, the problem of cost is higher, the utility model directly passes through the switching branches constituted by single-pole single-throw switch (SPST)
Realize the Access Control of matching branch road.Because the utility model circuit structure design is simple, so that it is smaller to occupy PCB space,
Cost is low, and because switch of the present utility model is using being connected in parallel in access circuit, so that the introducing of switching branches is damaged
Consumption is smaller, and the control of the switching branches is relatively simple, so as to reduce the control difficulty of integrated circuit.
Embodiment one
Fig. 2 is a kind of antenna double work frequency switching circuit structural representation of the utility model one embodiment, referring to
Fig. 2, the antenna double work frequency switching circuit 20 includes：The matching matching branch road of branch road 202 and second of switching branches 201, first
203；
The switching branches 201, the switch controlling signal for receiving control chip transmission, and controlled according to the switch
Signal accesses first match circuit 202 or second match circuit 203；The switch controlling signal is by the control core
Piece is determined according to Antenna Operation state；The switching branches use single-pole single-throw switch (SPST)；
The first matching branch road 202, for the working frequency of antenna to be switched in into the first working frequency；
The second matching branch road 203, for the working frequency of the antenna to be switched in into the second working frequency.
The beneficial effects of the utility model are：This antenna double work frequency switching circuit and electronics of the present utility model
Equipment, by realizing the Access Control of matching branch road by the switching branches constituted of single-pole single-throw switch (SPST).Because this practicality is new
Type circuit structure design is simple, so as to occupy, PCB space is smaller, and cost is low, and because switch of the present utility model is using in parallel
In connection access circuit, so that the introducing loss of switching branches is smaller, and the control of the switching branches is relatively simple, from
And reduce the control difficulty of integrated circuit.
Embodiment two
As Fig. 4 is Γ types antenna double work frequency switching circuit and Fig. 5 isType antenna double work frequency switching circuit；
The antenna double work frequency switching circuit includes：The matching branch road 202 and second of switching branches 201, first is matched
Branch road 203；
The switching branches include：First switch K1 and second switch K2；
The first matching branch road 202 can include as shown in Figure 8：First electric capacity C1 and the first inductance L1；
The first electric capacity C1 mono- terminates the first inductance L1, the first switch K1 and connected with the rf inputs mouthful
Connect end；The first electric capacity C1 other ends ground connection；Another termination antennas of first inductance L1 and the second switch K2
Connection end；
Or, the first matching branch road 202 can also include as shown in Figure 9：Second electric capacity C2 and the second inductance L2；
The second electric capacity C2 mono- terminates the second inductance L2, the first switch K1 and connected with the rf inputs mouthful
Connect end；Another termination antennas of second electric capacity C2 and the second switch K2 connection ends；The second inductance L2 is another
End ground connection.
Or, the first matching branch road 202 can also include as shown in Figure 10：3rd electric capacity C3 and the 3rd inductance L3；
The 3rd electric capacity C3 mono- terminates the 3rd inductance L3, the second switch K2 and the antenna connection terminal；Institute
State the 3rd electric capacity C3 other ends ground connection；Another termination first switch K1 of 3rd inductance L3 and the rf inputs mouthful
Connection end；
Or, the first matching branch road can include as shown in figure 11：4th electric capacity C4 and the 4th inductance L4；
The 4th electric capacity C4 mono- terminates the 4th inductance L4, the second switch K2 and the antenna connection terminal；Institute
State the 4th electric capacity C4 and meet the first switch K1 and the rf inputs mouthful connection end；Another terminations of 4th inductance L4
Ground.
The second matching branch road can include：5th electric capacity and the 6th electric capacity；
5th electric capacity one terminates the first switch；The 5th electric capacity other end ground connection；
6th electric capacity one terminates the second switch；The 5th electric capacity other end ground connection.
Or, the second matching branch road can also include：7th electric capacity and the 5th inductance；
7th electric capacity one terminates the first switch；The 7th electric capacity other end ground connection；
5th inductance one terminates the second switch；The 5th inductance other end ground connection.
Or, the second matching branch road can also include：6th inductance and the 8th electric capacity；
6th inductance one terminates the first switch；The 6th inductance other end ground connection；
8th electric capacity one terminates the second switch；The 8th electric capacity other end ground connection.
Or, the second matching branch road can also include：7th inductance and the 8th inductance；
7th inductance one terminates the first switch；The 7th inductance other end ground connection；
8th inductance one terminates the second switch；The 8th inductance other end ground connection.
Or, the second matching branch road can also include：9th inductance and first resistor；The first resistor resistance is
0Ω；
9th inductance one terminates the first switch；The 9th inductance other end ground connection；
The first resistor one terminates the second switch；The first resistor other end ground connection；
Or, the second matching branch road can also include：9th electric capacity and second resistance；The second resistance resistance is
0Ω；
9th electric capacity one terminates the first switch；The 9th electric capacity other end ground connection；
The second resistance one terminates the second switch；The second resistance other end ground connection；
Or, the second matching branch road can also include：3rd resistor and the tenth electric capacity；The 3rd resistor resistance is
0Ω；
The 3rd resistor one terminates the first switch；The 3rd resistor other end ground connection；
Tenth electric capacity one terminates the second switch；The tenth electric capacity other end ground connection；
Or, the second matching branch road can also include：4th resistance and the tenth inductance；4th resistance is
0Ω；
Tenth inductance one terminates the second switch；The tenth inductance other end ground connection；
4th resistance one terminates the first switch；The 4th resistance other end ground connection.
Based on above example, in bluetooth/WIFI products, antenna is often conformal with structural housing.It is generally conformal with antenna
Structural housing need to meet foldable or mobile requirement, to adapt to different application scenarios, such as can not only wear but also can be with
It is clipped in the bluetooth earphone on clothes.So require antenna can to reach antenna duplex in two kinds of different working conditions
Impedance matching in working frequency handoff procedure.As shown in fig. 6, being bluetooth/WIFI products product form in the case where opening working condition
Schematic diagram；As shown in fig. 7, being bluetooth/WIFI products product form schematic diagram under folding work state.For double work state
Bluetooth/WIFI products, the control principle of the antenna double work frequency switching circuit is as follows：
S1:Detect the working condition (fold or open) of the bluetooth/WIFI products by sensor, and by the detection
To working condition pass to the control chip；
S2:The control chip will send corresponding switch controlling signal and give antenna double work according to the working condition
Frequency switching circuit controls its first matching branch road access or the second matching branch road access；
The antenna double work frequency switching circuit controls the switch of its switching branches to lead to according to the switch controlling signal
It is disconnected, to control the working frequency of antenna, antenna is being folded or open working condition in the bluetooth/WIFI products
Under, matching can be realized.For example：During folding can with first in corresponding diagram 4 or Fig. 5 match branch road 202, open corresponding diagram 4 or
The second matching branch road in Fig. 5；Or the second matching branch road when folding in corresponding diagram 4 or Fig. 5, open in corresponding diagram 4 or Fig. 5
First matching branch road.Specifically chosen any matching branch road will be depending on the debugging situation according to actual product.Specifically debugged
Journey is as follows：If working condition one is first switch K1 and second switch K2 suspended states, the first matching branch road 202 is in work
Make state, antenna match is in frequency f1；Working condition two is first switch K1 and second switch K2 closure states, described second
In running order with branch road 203, antenna match is in frequency f2.
First, select suitable surface mount elements to be inductance L or electric capacity C, by Γ types (such as Fig. 4) orType (such as Fig. 5)
One matching branch road realizes the matching at frequency f1.First at f1 frequencies, which matches branch road, to be：Γ types match branch road from antenna
End first series connection L1 after parallel connection C1 (such as Fig. 8) or first connect C2 after parallel connection L2 (such as Fig. 9)；Type match circuit is first simultaneously from antenna end
Join the C4 (such as Figure 11) that connected after C3 after series connection L3 (such as Figure 10) or first parallel connection L4.
Secondly, the first switch K1 and second switch K2 is closed, the suitable surface mount elements in parallel of selection are inductance
Or electric capacity, the matching at frequency f2 is realized by the described second matching branch road 203.Two in the second matching branch road 203
The selectivity of parallel element is then more, for example：The electric capacity C and inductance L in the second matching branch road in Fig. 4 or Fig. 5
Depending on actual debugging situation, possible debugging result has：C5, C6 in parallel, or parallel connection C7, L5, or parallel connection L6, C8, or simultaneously
Join L7, L8.The second matching branch road can be with parallel connection the 9th inductance L9 and first resistor R1；The first resistor R1 resistances are
0 Ω, equivalent to wire；Or the second matching branch road can be with the 9th electric capacity in parallel and second resistance, the second resistance
Resistance is 0 Ω；The second matching branch road can be with 3rd resistor R3 in parallel and the tenth electric capacity C10；The 3rd resistor R3 resistances
It is worth for 0 Ω；Or, the second matching branch road can be with parallel connection the 4th resistance R4 and the tenth inductance L10；The 4th resistance R4
Resistance is 0 Ω.
Embodiment three
Fig. 3 is a kind of standby structured flowchart of electronics of the utility model one embodiment, and referring to Fig. 3, the electronics reality is set
Standby 30 include：Antenna double work frequency switching circuit 301.The realization principle and work of the antenna double work frequency switching circuit 301
The detailed description in previous embodiment three to antenna double work frequency switching circuit 20 is may refer to as process.
Technical solutions of the utility model are opened by the first matching branch road, the second matching branch road and by two radio frequency single-pole single-throw(SPSTs
Closing the simple circuit structure of composition switching branches realizes antenna double work frequency error factor, and debugging is convenient, and cost is relatively low.In day
Switching branches are accessed in circuit as a result of mode in parallel in line double work frequency switching circuit, so that entirely opening
The loss for closing the introducing of branch road is small compared with the mode of concatenation.Further, since the switching branches use single-pole single-throw switch (SPST), compared to
Single-pole double-throw switch (SPDT), reduce cost and and software control difficulty it is relatively low.Finally, due to day in technical solutions of the utility model
The design of line double work frequency switching circuit is simple, it is necessary to which the pcb spaces taken are smaller, therefore can flexibly use in bluetooth, wifi
Deng in product.
Preferred embodiment of the present utility model is the foregoing is only, protection model of the present utility model is not intended to limit
Enclose.All any modification, equivalent substitution and improvements made within spirit of the present utility model and principle etc., are all contained in this reality
With in new protection domain.
Claims (10)
1. a kind of antenna double work frequency switching circuit, it is characterised in that the circuit includes：Switching branches, the first matching branch road
With the second matching branch road；
The switching branches, for receiving the switch controlling signal of control chip transmission, and connect according to the switch controlling signal
Enter first match circuit or second match circuit；The switch controlling signal is by the control chip according to antenna work
Make state determination；The switching branches use single-pole single-throw switch (SPST)；
The first matching branch road, for the working frequency of antenna to be switched in into the first working frequency；
The second matching branch road, for the working frequency of the antenna to be switched in into the second working frequency.
2. circuit according to claim 1, it is characterised in that the switching branches include：First switch and second switch；
The termination of first switch one rf inputs mouthful and the first match circuit connection end, another described second of termination
With circuit；The second switch one terminates the antenna and the first match circuit connection end, another described second of termination
With circuit.
3. circuit according to claim 2, it is characterised in that the first matching branch road includes：First electric capacity and first
Inductance；
First electric capacity one terminates first inductance, the first switch and the rf inputs mouthful connection end；It is described
The first electric capacity other end is grounded；Another termination antenna of first inductance and the second switch connection end；
Or the first matching branch road includes：Second electric capacity and the second inductance；
Second electric capacity one terminates second inductance, the first switch and the rf inputs mouthful connection end；It is described
Another termination antenna of second electric capacity and the second switch connection end；The second inductance other end ground connection.
4. circuit according to claim 2, it is characterised in that the first matching branch road includes：3rd electric capacity and the 3rd
Inductance；
3rd electric capacity one terminates the 3rd inductance, the second switch and the antenna connection terminal；3rd electric capacity
The other end is grounded；Another termination first switch of 3rd inductance and the rf inputs mouthful connection end；
Or the first matching branch road includes：4th electric capacity and the 4th inductance；
4th electric capacity one terminates the 4th inductance, the second switch and the antenna connection terminal；4th electric capacity
Connect the first switch and the rf inputs mouthful connection end；The 4th inductance other end ground connection.
5. the circuit according to claim 3 or 4, it is characterised in that the second matching branch road includes：5th electric capacity and
Six electric capacity；
5th electric capacity one terminates the first switch；The 5th electric capacity other end ground connection；
6th electric capacity one terminates the second switch；The 5th electric capacity other end ground connection.
6. the circuit according to claim 3 or 4, it is characterised in that the second matching branch road includes：7th electric capacity and
Five inductance；
7th electric capacity one terminates the first switch；The 7th electric capacity other end ground connection；
5th inductance one terminates the second switch；The 5th inductance other end ground connection.
7. the circuit according to claim 3 or 4, it is characterised in that the second matching branch road includes：6th inductance and
Eight electric capacity；
6th inductance one terminates the first switch；The 6th inductance other end ground connection；
8th electric capacity one terminates the second switch；The 8th electric capacity other end ground connection.
8. the circuit according to claim 3 or 4, it is characterised in that the second matching branch road includes：7th inductance and
Eight inductance；
7th inductance one terminates the first switch；The 7th inductance other end ground connection；
8th inductance one terminates the second switch；The 8th inductance other end ground connection.
9. the circuit according to claim 3 or 4, it is characterised in that the second matching branch road includes：9th inductance and
One resistance；The first resistor resistance is 0 Ω；
9th inductance one terminates the first switch；The 9th inductance other end ground connection；
The first resistor one terminates the second switch；The first resistor other end ground connection；
Or, the second matching branch road includes：9th electric capacity and second resistance；The second resistance resistance is 0 Ω；
9th electric capacity one terminates the first switch；The 9th electric capacity other end ground connection；
The second resistance one terminates the second switch；The second resistance other end ground connection；
Or, the second matching branch road includes：3rd resistor and the tenth electric capacity；The 3rd resistor resistance is 0 Ω；
The 3rd resistor one terminates the first switch；The 3rd resistor other end ground connection；
Tenth electric capacity one terminates the second switch；The tenth electric capacity other end ground connection；
Or, the second matching branch road includes：4th resistance and the tenth inductance；4th resistance is 0 Ω；
Tenth inductance one terminates the second switch；The tenth inductance other end ground connection；
4th resistance one terminates the first switch；The 4th resistance other end ground connection.
10. a kind of electronic equipment, it is characterised in that the electronic equipment includes：It is a kind of described in any one in claim 1 to 9
Antenna double work frequency switching circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621427020.8U CN206412480U (en) | 2016-12-23 | 2016-12-23 | A kind of antenna double work frequency switching circuit and electronic equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621427020.8U CN206412480U (en) | 2016-12-23 | 2016-12-23 | A kind of antenna double work frequency switching circuit and electronic equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206412480U true CN206412480U (en) | 2017-08-15 |
Family
ID=59551612
Family Applications (1)
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|---|---|---|---|
| CN201621427020.8U Active CN206412480U (en) | 2016-12-23 | 2016-12-23 | A kind of antenna double work frequency switching circuit and electronic equipment |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106711612A (en) * | 2016-12-23 | 2017-05-24 | 歌尔科技有限公司 | Antenna dual-working-frequency switching circuit and electronic apparatus |
| CN111316501A (en) * | 2017-11-01 | 2020-06-19 | 深圳传音制造有限公司 | Antenna for mobile terminal and mobile terminal with same |
| CN111344164A (en) * | 2017-11-17 | 2020-06-26 | 法国大陆汽车公司 | System with at least two transceiving units connected to a common antenna |
-
2016
- 2016-12-23 CN CN201621427020.8U patent/CN206412480U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106711612A (en) * | 2016-12-23 | 2017-05-24 | 歌尔科技有限公司 | Antenna dual-working-frequency switching circuit and electronic apparatus |
| CN106711612B (en) * | 2016-12-23 | 2023-10-13 | 歌尔科技有限公司 | Antenna double-working-frequency switching circuit and electronic equipment |
| CN111316501A (en) * | 2017-11-01 | 2020-06-19 | 深圳传音制造有限公司 | Antenna for mobile terminal and mobile terminal with same |
| CN111316501B (en) * | 2017-11-01 | 2022-04-29 | 深圳传音制造有限公司 | Antenna for mobile terminal and mobile terminal with same |
| CN111344164A (en) * | 2017-11-17 | 2020-06-26 | 法国大陆汽车公司 | System with at least two transceiving units connected to a common antenna |
| US11811151B2 (en) | 2017-11-17 | 2023-11-07 | Continental Automotive France | System of at least two transmitting and/or receiving units connected to a common antenna |
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Effective date of registration: 20230428 Address after: 233000 85 Shengli Road, bengshan mountain, Bengbu, Anhui Patentee after: Bengbu wild hill network technology Co.,Ltd. Address before: 266104 Room 308, North Investment Street Service Center, Laoshan District, Qingdao, Shandong. Patentee before: GOERTEK TECHNOLOGY Co.,Ltd. |
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| TR01 | Transfer of patent right |