CN104716432A - Frequency-band-switchable antenna with switch - Google Patents
Frequency-band-switchable antenna with switch Download PDFInfo
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- CN104716432A CN104716432A CN201510111447.0A CN201510111447A CN104716432A CN 104716432 A CN104716432 A CN 104716432A CN 201510111447 A CN201510111447 A CN 201510111447A CN 104716432 A CN104716432 A CN 104716432A
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- mobile phone
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Abstract
The invention discloses a frequency-band-switchable antenna with a switch. The antenna with the switch is electrically connected with an impedance matching circuit to be used in a matched mode, a first capacitor is connected between the antenna with the switch and the impedance matching circuit in series, the antenna with the switch comprises a mobile phone antenna and a frequency band switching circuit, and the frequency band switching circuit is electrically connected with the mobile phone antenna and comprises a first lumped element circuit and a second lumped element circuit; the first lumped element circuit comprises a first inductor, a second inductor and a first switch for controlling on and off of the first inductor and the second inductor, and the second lumped element circuit comprises a third inductor, a second capacitor and a second switch for controlling on and off of the third inductor and the second capacitor. Compared with the prior art, the first lumped element circuit and different lumped elements in the first lumped element circuit can be controlled to be switched on through the frequency band switching circuit, and the working frequency band of the mobile phone antenna is accordingly switched.
Description
Technical field
The present invention relates to a kind of antenna for mobile phone, particularly relate to a kind of belt switch antenna of changeable frequency range.
Background technology
Existing antenna for mobile phone control circuit generally comprises antenna for mobile phone and impedance matching circuit, and impedance matching circuit is conducive to the Lossless transport of signal.In the ideal situation, can by the Lossless transport regulating antenna to reach signal.But, existing impedance matching circuit can not flexible, and the resonance frequency of antenna immobilizes substantially, adds the restriction of the space environment of mobile phone itself, causing the bandwidth of operation of antenna less, often can not meet only by regulating antenna the demand adapting to different frequency range.
Therefore, be necessary to provide a kind of new antenna for mobile phone to solve the problems referred to above.
Summary of the invention
The object of the present invention is to provide a kind of belt switch antenna that can regulate the changeable frequency range of the adaptation frequency range of antenna for mobile phone.
To achieve these goals, the technical solution adopted in the present invention is as follows:
A kind of belt switch antenna of changeable frequency range, described belt switch antenna and impedance matching circuit be electrically connected with the use of, the first electric capacity is connected in series with between described belt switch antenna and described impedance matching circuit, described belt switch antenna comprises antenna for mobile phone and frequency range commutation circuit, described frequency range commutation circuit and described antenna for mobile phone are electrically connected, described frequency range commutation circuit comprises the first circuit with lumped element and the second circuit with lumped element, described first circuit with lumped element comprises the first inductance, second inductance and for controlling described first inductance, first switch of the second inductance connecting and disconnecting, described second lamped element comprises the 3rd inductance, second electric capacity and for controlling described 3rd inductance, the second switch of the second electric capacity connecting and disconnecting.
Preferably, described first switch is single-pole double-throw switch (SPDT), described first switch comprises common port, the first terminals and the second terminals, the common port of described first switch is connected with antenna for mobile phone, first terminals of described first switch are connected with the first end of the first inductance, second end ground connection of described first inductance, the second terminals of described first switch are connected with the first end of the second inductance, the second end ground connection of described second inductance.
Preferably, described second switch is single-pole double-throw switch (SPDT), described second switch comprises common port, the first terminals and the second terminals, the common port of described second switch is connected with antenna for mobile phone, first terminals of described second switch are connected with the first end of the 3rd inductance, second end ground connection of described 3rd inductance, the second terminals of described second switch are connected with the first end of the second electric capacity, the second end ground connection of described second electric capacity.
Preferably, described first switch is single-pole single-throw switch (SPST), described first switch comprises the first single-pole single-throw switch (SPST) for controlling described first inductance connecting and disconnecting and the second single-pole single-throw switch (SPST) for controlling described second inductance connecting and disconnecting, described first single-pole single-throw switch (SPST) and described first inductance are connected in series between described antenna for mobile phone and ground, and described second single-pole single-throw switch (SPST) and described second inductance are connected in series between described antenna for mobile phone and ground.
Preferably, described second switch is single-pole single-throw switch (SPST), described second switch comprises the 3rd single-pole single-throw switch (SPST) for controlling described 3rd inductance connecting and disconnecting and the 4th single-pole single-throw switch (SPST) for controlling described second electric capacity connecting and disconnecting, described 3rd single-pole single-throw switch (SPST) and described 3rd inductance are connected in series between described antenna for mobile phone and ground, and described 4th single-pole single-throw switch (SPST) and described second capacitances in series are connected between described antenna for mobile phone and ground.
Preferably, the value of described first electric capacity is 5.2pf.
Preferably, the value of described first inductance is 4.5nH, and the value of the second inductance is 3.2nH, and the value of the 3rd inductance is 7.5nH, and the value of the second electric capacity is 0.8pF.
Compared with prior art, the beneficial effect of the belt switch antenna of the changeable frequency range of the present invention is: the different lamped elements that frequency range commutation circuit of the present invention can control in described first circuit with lumped element and the first circuit with lumped element are connected, thus the working frequency range of switch mobile phone antenna.
Accompanying drawing explanation
Fig. 1 is the structural representation of a preferred embodiment of the present invention;
Fig. 2 is the structural representation of another preferred embodiment of the present invention;
Fig. 3 is the oscillogram of antenna for mobile phone of the present invention;
Fig. 4 is the oscillogram of antenna for mobile phone of the present invention;
Fig. 5 is the oscillogram of antenna for mobile phone of the present invention;
Fig. 6 is the oscillogram of antenna for mobile phone of the present invention.
In figure, each mark is as follows: 1, frequency range commutation circuit; 101, the first circuit with lumped element; 102, the second circuit with lumped element; C1, the first electric capacity; C2, the second electric capacity; L1, the first inductance; L2, the second inductance; L3, the 3rd inductance; K1, the first switch; K2, second switch.
Embodiment
Below in conjunction with specific embodiment, the present invention is described further.
Refer to shown in Fig. 1 to Fig. 6, the belt switch antenna of the changeable frequency range of the present invention and impedance matching circuit be electrically connected with the use of, the first electric capacity C1 is connected in series with between described belt switch antenna and described impedance matching circuit, described belt switch antenna comprises antenna for mobile phone and frequency range commutation circuit 1, described frequency range commutation circuit 1 is electrically connected with described antenna for mobile phone, described frequency range commutation circuit 1 comprises the first circuit with lumped element 101 and the second circuit with lumped element 102, described first circuit with lumped element 101 comprises the first inductance L 1, second inductance L 2 and for controlling described first inductance L 1, first K switch 1 of the second inductance L 2 connecting and disconnecting, described second lamped element comprises the 3rd inductance L 3, second electric capacity C2 and for controlling described 3rd inductance L 3, the second switch K2 of the second electric capacity C2 connecting and disconnecting.
In an embodiment of the present invention, as shown in Figure 1, described first K switch 1 is single-pole double-throw switch (SPDT), described first K switch 1 comprises common port, the first terminals and the second terminals, the common port of described first K switch 1 is connected with antenna for mobile phone, first terminals of described first K switch 1 are connected with the first end of the first inductance L 1, second end ground connection of described first inductance L 1, second terminals of described first K switch 1 are connected with the first end of the second inductance L 2, the second end ground connection of described second inductance L 2.Described second switch K2 is single-pole double-throw switch (SPDT), described second switch K2 comprises common port, the first terminals and the second terminals, the common port of described second switch K2 is connected with antenna for mobile phone, first terminals of described second switch K2 are connected with the first end of the 3rd inductance L 3, second end ground connection of described 3rd inductance L 3, second terminals of described second switch K2 are connected with the first end of the second electric capacity C2, the second end ground connection of described second electric capacity C2.
In an alternative embodiment of the invention, as shown in Figure 2, described first K switch 1 is single-pole single-throw switch (SPST), described first K switch 1 comprises the first single-pole single-throw switch (SPST) for controlling described first inductance L 1 connecting and disconnecting and the second single-pole single-throw switch (SPST) for controlling described second inductance L 2 connecting and disconnecting, described first single-pole single-throw switch (SPST) and described first inductance L 1 are connected in series between described antenna for mobile phone and ground, and described second single-pole single-throw switch (SPST) and described second inductance L 2 are connected in series between described antenna for mobile phone and ground.Described second switch K2 is single-pole single-throw switch (SPST), described second switch K2 comprises the 3rd single-pole single-throw switch (SPST) for controlling described 3rd inductance L 3 connecting and disconnecting and the 4th single-pole single-throw switch (SPST) for controlling described second electric capacity C2 connecting and disconnecting, described 3rd single-pole single-throw switch (SPST) and described 3rd inductance L 3 are connected in series between described antenna for mobile phone and ground, and described 4th single-pole single-throw switch (SPST) and described second electric capacity C2 are connected in series between described antenna for mobile phone and ground.
In addition, the value of the first electric capacity C1 of the present invention is 5.2pf.The value of described first inductance L 1 is 4.5nH, and the value of the second inductance L 2 is 3.2nH, and the value of the 3rd inductance L 3 is 7.5nH, and the value of the second electric capacity C2 is 0.8pF.
Antenna type of the present invention is IFA, and when described first inductance L 1 is connected, the second inductance L 2 disconnects, and the second electric capacity C2 connects, and when the 3rd inductance L 3 disconnects, the oscillogram of switched antenna as shown in Figure 3; When described first inductance L 1 is connected, the second inductance L 2 disconnects, and the second electric capacity C2 disconnects, and when the 3rd inductance L 3 is connected, the oscillogram of switched antenna as shown in Figure 4; When described first inductance L 1 disconnects, the second inductance L 2 is connected, and the second electric capacity C2 connects, and when the 3rd inductance L 3 disconnects, the oscillogram of switched antenna as shown in Figure 5; When described first inductance L 1 disconnects, the second inductance L 2 is connected, and the second electric capacity C2 disconnects, and when the 3rd inductance L 3 is connected, the oscillogram of antenna for mobile phone as shown in Figure 6.
In sum, the different lamped elements that frequency range commutation circuit 1 of the present invention can control in described first circuit with lumped element 101 and the first circuit with lumped element 101 are connected, thus the working frequency range of switch mobile phone antenna.
Schematically above be described the present invention and execution mode thereof, this description does not have restricted, and also just one of the embodiments of the present invention shown in accompanying drawing, actual structure is not limited thereto.So, if those of ordinary skill in the art enlightens by it, when not departing from the invention aim, designing the frame mode similar to this technical scheme and embodiment without creationary, all should protection scope of the present invention be belonged to.
Claims (7)
1. the belt switch antenna of a changeable frequency range, described belt switch antenna and impedance matching circuit be electrically connected with the use of, it is characterized in that: between described belt switch antenna and described impedance matching circuit, be connected in series with the first electric capacity, described belt switch antenna comprises antenna for mobile phone and frequency range commutation circuit, described frequency range commutation circuit and described antenna for mobile phone are electrically connected, described frequency range commutation circuit comprises the first circuit with lumped element and the second circuit with lumped element, described first circuit with lumped element comprises the first inductance, second inductance and for controlling described first inductance, first switch of the second inductance connecting and disconnecting, described second lamped element comprises the 3rd inductance, second electric capacity and for controlling described 3rd inductance, the second switch of the second electric capacity connecting and disconnecting.
2. the belt switch antenna of changeable frequency range as claimed in claim 1, it is characterized in that: described first switch is single-pole double-throw switch (SPDT), described first switch comprises common port, the first terminals and the second terminals, the common port of described first switch is connected with antenna for mobile phone, first terminals of described first switch are connected with the first end of the first inductance, second end ground connection of described first inductance, second terminals of described first switch are connected with the first end of the second inductance, the second end ground connection of described second inductance.
3. the belt switch antenna of changeable frequency range as claimed in claim 2, it is characterized in that: described second switch is single-pole double-throw switch (SPDT), described second switch comprises common port, the first terminals and the second terminals, the common port of described second switch is connected with antenna for mobile phone, first terminals of described second switch are connected with the first end of the 3rd inductance, second end ground connection of described 3rd inductance, second terminals of described second switch are connected with the first end of the second electric capacity, the second end ground connection of described second electric capacity.
4. the belt switch antenna of changeable frequency range as claimed in claim 1, it is characterized in that: described first switch is single-pole single-throw switch (SPST), described first switch comprises the first single-pole single-throw switch (SPST) for controlling described first inductance connecting and disconnecting and the second single-pole single-throw switch (SPST) for controlling described second inductance connecting and disconnecting, described first single-pole single-throw switch (SPST) and described first inductance are connected in series between described antenna for mobile phone and ground, and described second single-pole single-throw switch (SPST) and described second inductance are connected in series between described antenna for mobile phone and ground.
5. the belt switch antenna of changeable frequency range as claimed in claim 4, it is characterized in that: described second switch is single-pole single-throw switch (SPST), described second switch comprises the 3rd single-pole single-throw switch (SPST) for controlling described 3rd inductance connecting and disconnecting and the 4th single-pole single-throw switch (SPST) for controlling described second electric capacity connecting and disconnecting, described 3rd single-pole single-throw switch (SPST) and described 3rd inductance are connected in series between described antenna for mobile phone and ground, and described 4th single-pole single-throw switch (SPST) and described second capacitances in series are connected between described antenna for mobile phone and ground.
6. the belt switch antenna of the changeable frequency range as described in claim 3 or 5, is characterized in that: the value of described first electric capacity is 5.2pf.
7. the belt switch antenna of changeable frequency range as claimed in claim 6, is characterized in that: the value of described first inductance is 4.5nH, and the value of the second inductance is 3.2nH, and the value of the 3rd inductance is 7.5nH, and the value of the second electric capacity is 0.8pF.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510111447.0A CN104716432A (en) | 2015-03-13 | 2015-03-13 | Frequency-band-switchable antenna with switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510111447.0A CN104716432A (en) | 2015-03-13 | 2015-03-13 | Frequency-band-switchable antenna with switch |
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| Publication Number | Publication Date |
|---|---|
| CN104716432A true CN104716432A (en) | 2015-06-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510111447.0A Pending CN104716432A (en) | 2015-03-13 | 2015-03-13 | Frequency-band-switchable antenna with switch |
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| CN (1) | CN104716432A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106229624A (en) * | 2016-09-06 | 2016-12-14 | 北京小米移动软件有限公司 | Anneta module and electronic equipment |
| 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 |
| CN107947822A (en) * | 2016-10-13 | 2018-04-20 | 中兴通讯股份有限公司 | A kind of antenna-matching circuit, the system of selection of frequency range and device |
| CN108900217A (en) * | 2018-07-11 | 2018-11-27 | Oppo（重庆）智能科技有限公司 | Tuning circuit, radio circuit and electronic equipment |
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| WO2012124247A1 (en) * | 2011-03-16 | 2012-09-20 | パナソニック株式会社 | Antenna device, and wireless communication device |
| CN102694238A (en) * | 2012-05-24 | 2012-09-26 | 深圳市中兴移动通信有限公司 | Multiband antenna |
| CN203466294U (en) * | 2013-08-22 | 2014-03-05 | 深圳富泰宏精密工业有限公司 | Adjustable antenna and wireless communication device therewith |
| US20140094230A1 (en) * | 2012-10-03 | 2014-04-03 | Fujitsu Limited | Portable communication apparatus and antenna switching method |
| EP2779305A1 (en) * | 2013-03-15 | 2014-09-17 | VeriFone, Inc. | Multi-Loop Antenna System for Contactless Applications |
| CN204407517U (en) * | 2015-03-13 | 2015-06-17 | 昆山睿翔讯通通信技术有限公司 | The belt switch antenna of changeable frequency range |
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2015
- 2015-03-13 CN CN201510111447.0A patent/CN104716432A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2012124247A1 (en) * | 2011-03-16 | 2012-09-20 | パナソニック株式会社 | Antenna device, and wireless communication device |
| CN102694238A (en) * | 2012-05-24 | 2012-09-26 | 深圳市中兴移动通信有限公司 | Multiband antenna |
| US20140094230A1 (en) * | 2012-10-03 | 2014-04-03 | Fujitsu Limited | Portable communication apparatus and antenna switching method |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106229624A (en) * | 2016-09-06 | 2016-12-14 | 北京小米移动软件有限公司 | Anneta module and electronic equipment |
| CN107947822A (en) * | 2016-10-13 | 2018-04-20 | 中兴通讯股份有限公司 | A kind of antenna-matching circuit, the system of selection of frequency range and device |
| 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 |
| CN108900217A (en) * | 2018-07-11 | 2018-11-27 | Oppo（重庆）智能科技有限公司 | Tuning circuit, radio circuit and electronic equipment |
| CN108900217B (en) * | 2018-07-11 | 2021-01-08 | Oppo（重庆）智能科技有限公司 | Tuning circuit, radio frequency circuit and electronic equipment |
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Application publication date: 20150617 |
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