CN104113859B - The switching method of radio communication device and its antenna - Google Patents
The switching method of radio communication device and its antenna Download PDFInfo
- Publication number
- CN104113859B CN104113859B CN201410047232.2A CN201410047232A CN104113859B CN 104113859 B CN104113859 B CN 104113859B CN 201410047232 A CN201410047232 A CN 201410047232A CN 104113859 B CN104113859 B CN 104113859B
- Authority
- CN
- China
- Prior art keywords
- modem
- signal
- antenna
- power amplifier
- radio communication
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Abstract
The present invention provides the switching method of a kind of radio communication device and its antenna.Radio communication device includes first antenna, the second antenna, the first modem, switch and second modem.First modem produces control signal, switch coupling first antenna, the second antenna, the first modem and second modem.Switch is received simultaneously to be switched over according to control signal, first antenna is coupled to one of the first modem and second modem, and the second antenna is coupled to the another of the first modem and second modem.
Description
Technical field
Cut the invention relates to a kind of radio communication device, and in particular to a kind of antenna of radio communication device
Change method.
Background technology
With the progress of electronics technology, the trend that radio communication device has necessitated is provided on the electronic device.And
Today of information requirement blast, to meet the demand that can receive a variety of category informations, it is known that technology provides a kind of in radio communication dress
Put and be equipped with the mode of duplex MODEM and double antenna to reach the demand of product.
And in known technology, the corresponding relation between duplex MODEM and antenna is fixed, that is to say, that modulatedemodulate
Device is adjusted to be only capable of entering by corresponding single antenna the biography receipts action of row information, when the day corresponding to modem
Line, during the phenomenon that its ability for passing breath of collecting mail is reduced, electronic installation is for the information category corresponding to the modem
Biography receive ability can only just be deteriorated therewith.
The content of the invention
The present invention provides the switching method of a kind of radio communication device and its antenna, can carry out antenna according to communication quality
Switching action.
The radio communication device of the present invention includes first antenna, the second antenna, the first modem, the second modulation /demodulation
Device and switch.First modem produces control signal, switch coupling first antenna, the second antenna, the first modulation
Demodulator and second modem.Switch is received simultaneously to be switched over according to control signal, first antenna is coupled to the
One of one modem and second modem, and the second antenna is coupled to the first modem and second
Modem it is another.
In one embodiment of this invention, above-mentioned first antenna receives the first radiofrequency signal, and the second antenna receives second
Radiofrequency signal, at least one of signal quality of first modem according to the first radiofrequency signal and the second radiofrequency signal
To produce control signal.
In one embodiment of this invention, frequency band at least part of the first above-mentioned radiofrequency signal and the second radiofrequency signal
Overlap.
In one embodiment of this invention, when above-mentioned switch makes the first modem couple first antenna, the
One modem receives and judges whether the signal quality of the first radiofrequency signal is more than preset critical to produce control signal.
In one embodiment of this invention, when the signal quality of the first above-mentioned radiofrequency signal is not more than preset critical
When, the first modem produces control signal and is coupled to the second antenna to control switch to change the first modem.
In one embodiment of this invention, the first above-mentioned modem receives and detects the signal of the second radiofrequency signal
Quality, the first modem simultaneously sets control according to comparing the signal quality of the first radiofrequency signal and the second radiofrequency signal
Signal.
In one embodiment of this invention, radio communication device also includes the first power amplifier and the second power amplification
Device.First power amplifier is coupled between the first modem and switch, and the first power amplifier is received and according to the
One enabling signal is to start or close.Second power amplifier is coupled between second modem and switch, the second work(
Rate amplifier receives and starts or close according to the second enabling signal.Wherein, the first enabling signal and the second enabling signal by
Produced by first modem.
In one embodiment of this invention, the first above-mentioned modem sets control signal so that switch is cut
Move before work, the first modem produces the first enabling signal and the second enabling signal to close first and second work(respectively
Rate amplifier.
In one embodiment of this invention, the first above-mentioned modem and after the completion of the switching action of switch lead to
The first enabling signal and the second enabling signal is crossed first and second power amplifier is respectively started.
In one embodiment of this invention, radio communication device also includes logical operation circuit.Logical operation circuit is coupled
Between second modem and the second power amplifier, logical operation circuit receives the second enabling signal and the 3rd startup
Signal simultaneously carries out logical operation to produce logic operation result for the second enabling signal and the 3rd enabling signal, logic fortune
Result is calculated to be transferred into the second power amplifier to start or stop the second power amplifier.
The antenna switching method of the radio communication device of the present invention includes：Believed by the first modem with producing control
Number, also, control signal is received by switch, and switching action is performed according to control signal, it is coupled to first antenna
One of first modem and second modem, and the second antenna is coupled to the first modem and
Two modems it is another.
It is of the invention to provide switch to receive control signal based on above-mentioned, and make the first modulation according to control signal switching
Demodulator is coupled to first antenna, and second modem is coupled to the second antenna, or, it is coupled to the first modem
Second antenna, second modem is coupled to first antenna.Consequently, it is possible to modem can select first antenna and
The quality for the radiofrequency signal that second antenna is received, to carry out the switching of antenna, so that modem can be for suitably penetrating
Frequency signal is handled, to lift the quality of communication.
For the features described above and advantage of the present invention can be become apparent, special embodiment below, and coordinate institute's accompanying drawings
It is described in detail below.
Brief description of the drawings
Fig. 1 illustrates the schematic diagram of the radio communication device 100 of the embodiment of the present invention.
Fig. 2A illustrates the schematic diagram of the radio communication device 200 of another embodiment of the present invention.
Fig. 2 B illustrate the schematic diagram of another embodiment of the embodiment of radio communication device 200 of the present invention.
Fig. 3 illustrates the flow chart of an embodiment of the antenna switching method of the radio communication device of the present invention.
Fig. 4 illustrates the flow chart of the antenna switching method implementation detail of the radio communication device of the embodiment of the present invention.
[label declaration]
100、200：Radio communication device ANT1, ANT2：Antenna
110、120、210、220：Modem 130,230：Switch
CTRL：Control signal RF1, RF2：Radiofrequency signal
211、221：Power amplifier EN1~EN3：Enabling signal
250：Logical operation circuit
S310~S320, S410~S440：The step of antenna switching method
Embodiment
Fig. 1 is refer to, Fig. 1 illustrates the schematic diagram of the radio communication device 100 of the embodiment of the present invention.Radio communication device
100 include antenna ANT1, ANT2, modem 110,120 and switch 130.Switch 130 be coupled to antenna ANT1,
ANT2 and modem 110,120.Wherein, modem 110 produces control signal CTRL, and transmits control signal
CTRL is to switch 130.Switch 130 receives control signal CTRL and switches over action according to control signal CTRL.Its
In, switch 130 can make modem 110 be coupled to antenna ANT1 according to control signal CTRL, and make modem
120 are coupled to antenna ANT2.Or, switch 130 also can make modem 110 be coupled to day according to control signal CTRL
Line ANT2, and modem 120 is coupled to antenna ANT1.
In the present embodiment, control signal CTRL can be data signal, wherein, when control signal CTRL is the first logic
During state (such as logic high), switch 130 is changeable to make modem 110 be coupled to antenna ANT1, and makes modulation
Demodulator 120 is coupled to antenna ANT2.In addition, when control signal CTRL is the second logic state (such as logic low),
Switch 130 is changeable to make modem 110 be coupled to antenna ANT2, and modem 120 is coupled to antenna ANT1.
It is noted that modem 110 can according to by antenna ANT1, ANT2 radiofrequency signal RF1 received and
At least one in RF2 produces control signal CTRL.In action details, make modem when switch 130
110 are coupled in the state of antenna ANT1, and modem 110 can receive radiofrequency signal RF1 by antenna ANT1.Also,
Modem 110 can produce control signal CTRL according to radiofrequency signal RF1 signal quality.If now modulatedemodulate
When tune device 110 judges that radiofrequency signal RF1 signal quality is greater than preset critical, represent that radiofrequency signal RF1 is to make
Excellent signal.Therefore, modem 110 produces control signal CTRL so that antenna ANT1 is maintained and modem
110 couplings, so that modem 110 can continue to receive and handle excellent radiofrequency signal RF1.Relative, if now
When modem 110 judges that radiofrequency signal RF1 signal quality is no more than preset critical, radiofrequency signal RF1 is represented
Not excellent signal.Therefore, modem 110 produces control signal CTRL so that the nearly row switching action of switch 130, and makes
Modem 110, which changes, is coupled to antenna ANT2.Consequently, it is possible to which modem 110, which can change reception, comes from antenna
ANT2 radiofrequency signal is to be handled.
Hold continuous above-mentioned explanation, modem 110 can be detected by antenna ANT2 after changing and being coupled to antenna ANT2
Received radiofrequency signal RF2 signal quality, and for previously received radiofrequency signal RF1 signal quality with now
The radiofrequency signal RF2 received signal quality is compared, and thereby setting control signal CTRL.It is specifically bright, if adjusting
When modulator-demodulator 110 judges that radiofrequency signal RF2 signal quality is an advantage over radiofrequency signal RF1 signal quality, modulation /demodulation
Device 110 can produce control signal CTRL so that switch 130 maintains modem 110 to be coupled to antenna ANT2.Relatively,
If modem 110 judges that radiofrequency signal RF1 signal quality is an advantage over radiofrequency signal RF2 signal quality, modulation
Demodulator 110 can produce control signal CTRL so that switch 130 switches over action, and modem 110 is changed coupling
It is connected to antenna ANT1.
Subsidiary one is mentioned that, when modem 110 is coupled to antenna ANT1, modem 120 is coupled to antenna
ANT2.In design, in a handheld exemplified by electronic installation, modem 110 can be for processing voice signal, and modulatedemodulate
Adjust device 120 then can be for processing network signal.In other words, modem 110 is to need better signal matter for handling
The radiofrequency signal of amount, and modem 120 is the radiofrequency signal for handling signal quality that can be more inferior.
Fig. 2A is refer to below, and Fig. 2A illustrates the schematic diagram of the radio communication device 200 of another embodiment of the present invention.In figure
In 2A, radio communication device 200 includes modem 210,220, switch 230, power amplifier 211,221 and antenna
ANT1 and ANT2.Switch 230 is coupled between modem 210,220 and antenna ANT1 and ANT2, power amplifier 211
It is coupled between switch 230 and modem 210, and power amplifier 221 is coupled in switch 230 and modem
Between 220.
In the present embodiment, the signal that power amplifier 211 to be passed receipts for modem 210 is amplified, and
The biography collection of letters number after amplification is sent to switch 230 or modem 210 according to this.In addition, modem 210 and transmitting
Enabling signal EN1 is to power amplifier 211.Power amplifier 211 is then according to the enabling signal EN1 that receives to start or stop
The amplification action of its signal.
On the other hand, the signal that power amplifier 221 then to be passed receipts for modem 220 is amplified, and
The biography collection of letters number after amplification is sent to switch 230 or modem 220 according to this.In addition, modem 210 and transmitting
Enabling signal EN2 is to power amplifier 221.Power amplifier 221 is then according to the enabling signal EN2 that receives to start or stop
The amplification action of its signal.
If it should also be noted that during the nearly row switching action of switch 230, power amplifier 211 and 221 is held
Continuous work is simultaneously collected mail to the biography after amplification number to be exported, what that can infer, during switch motion in switch 230, is had
Probably due in switch 230 residual charge of parasitic capacitance and cause power amplifier 211 and 221 output end on moment
With very big voltage difference.This phenomenon may be such that between the output end of switch 230 and power amplifier 211 and 221
Produce the high current or even scintillant phenomenon of moment, it is possible to cause the element in radio communication device 200 to damage
It is bad.
In view of this, the modem 210 in the present embodiment is sending control signal CTRL to drive switch 230 to enter
Before row switching action, enabling signal EN1 and EN2 can be first sent respectively to power amplifier 211 and 212, and is believed by starting
Number EN1 and EN2 stops the action of power amplifier 211 and 212 respectively.Also, when in the completion switching action of switch 230
Afterwards, the action of power amplifier 211 and 212 can be respectively started in modem 210 by enabling signal EN1 and EN2 again,
To maintain the normal operation of radio communication device 200.
Here, modem 210 can be after setting control signal CTRL be to drive switch 230 to switch over action
After one fixed preset time is interval, come by changing enabling signal EN1 and EN2 so that the weight of power amplifier 211 and 212
New running.This preset time is interval to be set according to the time required for the completion switching action of switch 230.
Fig. 2 B are refer to, Fig. 2 B illustrate the signal of another embodiment of the embodiment of radio communication device 200 of the present invention
Figure.Wherein, radio communication device 200 also includes logical operation circuit 250.Logical operation circuit 250 is coupled in modem
210th, between 220 and power amplifier 221.To allow power amplifier 221 by the priority acccess control of modem 210, logic
The enabling signal EN2 and modem 220 that computing circuit 250 is provided to receive the transmission of modem 210 are transmitted
Enabling signal EN3, logical operation circuit 250 simultaneously carries out logical operation for enabling signal EN2 and enabling signal EN3, and
The action of startup and the closing of power amplifier 221 is controlled using the logic operation result obtained by computing.
It is worth noting that, modem 210 and modem 220 be can respectively by enabling signal EN2,
The action of startup and the closing of EN3 control power amplifiers 221.The enabling signal EN2 that modem 210 is transmitted for
The startup of power amplifier 221 and the relative importance value of closing motion is controlled to be above the startup letter that modem 220 is transmitted
Number EN3.Specifically, exactly modem 210 transmit enabling signal EN2 with indicate control power amplifier 221 close
Under the situation for closing action, no matter modem 220 transmit enabling signal EN3 why, it is all uncontrollable to make power amplifier
221 are changed to starting state.In addition, modem 210 transmit enabling signal EN2 with indicate control power amplifier
221 under bootable situation, and modem 220 can then control to make power amplifier 221 by enabling signal EN3
Start or close.
In the above-described embodiment, when the switch 230 of radio communication device 200 has the situation for the action that switches
When, modem 210 will adapter power amplifier 211 and 221 the control action whether started.And it is relative,
When switch 230 does not switch over the demand of action, modem 210 and 220 can control corresponding work(respectively
The control action whether started of rate amplifier 211 and 221.That is, now modem 220 can be transported by logic
Circuit 250 is calculated directly to transmit enabling signal EN3 to control to make the startup or closing of power amplifier 221.
Fig. 3 is refer to below, and Fig. 3 illustrates the stream of an embodiment of the antenna switching method of the radio communication device of the present invention
Cheng Tu.The step of antenna switching method of radio communication device, includes：In step S310, produced by the first modem
Raw control signal, and in step s 320, then control signal is received by switch, and believe according to control by switch
Number switching action carried out makes first antenna be couple to one of the first modem and second modem,
And the second antenna is couple to the therein another of the first modem and second modem.Specifically, exactly cut
Parallel operation can make first antenna be couple to the first modem according to control signal, and (now the second antenna is coupled to the second modulatedemodulate
Adjust device), or the second antenna is couple to the first modem (now first antenna is coupled to second modem).
Fig. 4 is refer to below, and Fig. 4 illustrates the antenna switching method implementation detail of the radio communication device of the embodiment of the present invention
Flow chart.Wherein, in step S410, whether switch is started by control signal for the first modem
Switching action, if step S410 judged result is no, persistently carries out this judgment step, relatively, if step S410
Judged result is yes, then carrying out step S420 makes the first modem close the first power amplifier, also, the first modulatedemodulate
Device is adjusted to transmit enabling signal to logical operation circuit to close the second power amplifier.Then, in step S430, the first modulatedemodulate
Device is adjusted switch is switched over action, and in step S440, after the completion of the switching action when switch, the first modulatedemodulate
Adjust device to restart the first power amplifier, and pass through transmitted enabling signal to logical operation circuit to start the second power
Amplifier.
In summary, the present invention is by the first modem, second modem, first antenna and second day
Switch is set in line, and control signal is transmitted to control the switching action of switch by the first modem, so that the
One modem can select to receive the radiofrequency signal received by first antenna or the second antenna, to maintain radio communication to fill
The communication quality put can reach optimization.
Although the present invention is disclosed above with embodiment, so it is not limited to the present invention, any art
Middle tool usually intellectual, without departing from the spirit and scope of the present invention, when a little change and retouching can be made, thus it is of the invention
Protection domain when being defined depending on the scope of the appended claims person of defining.
Claims (17)
1. a kind of radio communication device, including：
One first antenna；
One second antenna；
One first modem, produces a control signal；
One second modem；
One switch, couples the first antenna, second antenna, first modem and the second modem,
The switch is received simultaneously to be switched over according to the control signal, make the first antenna be coupled to first modem and this
One of two modems, and second antenna is coupled to first modem and the second modem
It is another；
One first power amplifier, is coupled between first modem and the switch, and first power amplifier connects
Receive and start or close according to one first enabling signal；
One second power amplifier, is coupled between the second modem and the switch, and second power amplifier connects
Receive and according to one second enabling signal to start or close,
Wherein, first enabling signal and second enabling signal are as produced by first modem；And
One logical operation circuit, is coupled between the second modem and second power amplifier, logical operation electricity
Road receives second enabling signal and one the 3rd enabling signal and for second enabling signal and the 3rd enabling signal
Logical operation is carried out to produce a logic operation result, the logic operation result is transferred into second power amplifier to start
Or stop second power amplifier.
2. radio communication device according to claim 1, the wherein first antenna receive one first radiofrequency signal, this second
Antenna receives one second radiofrequency signal, first modem according to first radiofrequency signal and second radiofrequency signal extremely
Lack the signal quality of one of them to produce the control signal.
3. radio communication device according to claim 2, wherein first radiofrequency signal and second radiofrequency signal
Frequency band at least partly overlaps.
4. radio communication device according to claim 2, wherein when the switch makes first modem coupling should
During first antenna, first modem, which receives and judges whether the signal quality of first radiofrequency signal is default more than one, to be faced
Dividing value produces the control signal.
5. radio communication device according to claim 4, wherein when the signal quality of first radiofrequency signal is not more than this
During preset critical, first modem produces the control signal to control the switch to change first modem
It is coupled to second antenna.
6. radio communication device according to claim 5, wherein first modem receive and detect that this second is penetrated
The signal quality of frequency signal, first modem and according to comparing first radiofrequency signal and second radiofrequency signal
Signal quality sets the control signal.
7. radio communication device according to claim 1, wherein first modem set the control signal so that
The switch is switched over before operation, first modem produce first enabling signal and second enabling signal with
Close respectively this first and second power amplifier.
8. radio communication device according to claim 7, wherein first modem and in the switching of the switch
After the completion of operation by first enabling signal and second enabling signal be respectively started this first and second power put
Big device.
9. radio communication device according to claim 1, the wherein relative importance value of second enabling signal are opened more than the 3rd
Dynamic signal, when second enabling signal indicates to stop second power amplifier, second power amplifier is according to the logic
Operation result is stopped.
10. a kind of antenna switching method of radio communication device, including：
By one first modem to produce a control signal；And
The control signal is received by a switch, and switching action is performed according to the control signal, makes a first antenna coupling
One of first modem and a second modem are connected to, and one second antenna is coupled to first tune
Modulator-demodulator and the second modem it is another；
One first power amplifier is provided so that there is provided one second power amplifier to start or close according to one first enabling signal
With according to one second enabling signal to start or close, wherein, first enabling signal and second enabling signal by this first
Produced by modem；
Carry out logical operation to produce a logic operation result for second enabling signal and one the 3rd enabling signal；And
The logic operation result is transmitted to second power amplifier to start or stop second power amplifier.
11. the antenna switching method of radio communication device according to claim 10, the control signal first is modulated by this
Demodulator is produced according at least one of signal quality of one first radiofrequency signal and one second radiofrequency signal,
Wherein, first radiofrequency signal and second radiofrequency signal are received by first antenna and the second antenna respectively.
12. the antenna switching method of radio communication device according to claim 11, wherein first radiofrequency signal and
The frequency band of second radiofrequency signal at least partly overlaps.
13. the antenna switching method of radio communication device according to claim 11, the control signal first is modulated by this
Demodulator according to first radiofrequency signal and second radiofrequency signal at least one of signal quality to produce the step of
Including：
When the switch makes first modem couple the first antenna, receive and sentence by first modem
Whether the signal quality for first radiofrequency signal of breaking is more than a preset critical to produce the control signal.
14. the antenna switching method of radio communication device according to claim 13, wherein passing through first modulation /demodulation
Device receives and judges whether the signal quality of first radiofrequency signal is more than the preset critical to produce the step of the control signal
Suddenly include：
When the signal quality of first radiofrequency signal is not more than the preset critical, being produced by first modem should
Control signal is coupled to second antenna to control the switch to change first modem.
15. the antenna switching method of radio communication device according to claim 14, wherein also including：
Received by first modem and detect the signal quality of second radiofrequency signal, the control signal simultaneously passes through this
First modem foundation compares the signal quality of first radiofrequency signal and second radiofrequency signal to set.
16. the antenna switching method of radio communication device according to claim 10, wherein also including：
The switch is switched over before action according to the control signal, and producing first startup by first modem believes
Number and second enabling signal to close first power amplifier and second power amplifier respectively,
Wherein, first power amplifier is coupled to first modem, and second power amplifier be coupled to this
Two modems.
17. the antenna switching method of radio communication device according to claim 16, wherein also including：
By first modem after the completion of the switching action of the switch by first enabling signal and this
Two enabling signals are to be respectively started first power amplifier and second power amplifier.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US201361813646P | 2013-04-19 | 2013-04-19 | |
| US61/813,646 | 2013-04-19 | ||
| US14/144,565 US9178557B2 (en) | 2013-04-19 | 2013-12-31 | Wireless communication apparatus and antenna switching method thereof |
| US14/144,565 | 2013-12-31 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104113859A CN104113859A (en) | 2014-10-22 |
| CN104113859B true CN104113859B (en) | 2017-09-15 |
Family
ID=51710460
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410047232.2A Active CN104113859B (en) | 2013-04-19 | 2014-02-11 | The switching method of radio communication device and its antenna |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104113859B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114726396A (en) * | 2022-04-12 | 2022-07-08 | Oppo广东移动通信有限公司 | Antenna switching device, antenna switching method and electronic equipment |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201478455U (en) * | 2009-06-19 | 2010-05-19 | 青岛海信移动通信技术股份有限公司 | Multiplex antenna and communication electronic product therewith |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7400862B2 (en) * | 2004-10-25 | 2008-07-15 | Skyworks Solutions, Inc. | Transmit-receive switch architecture providing pre-transmit isolation |
| CN101167266A (en) * | 2005-04-28 | 2008-04-23 | Nxp股份有限公司 | Radio apparatus |
| US8781522B2 (en) * | 2006-11-02 | 2014-07-15 | Qualcomm Incorporated | Adaptable antenna system |
| JP4962286B2 (en) * | 2007-11-28 | 2012-06-27 | 富士通株式会社 | Wireless communication apparatus, power amplifier control method, and power amplifier control apparatus |
| US8811922B2 (en) * | 2011-04-18 | 2014-08-19 | Apple Inc. | LTE/1X dual-standby with single-chip radio |
-
2014
- 2014-02-11 CN CN201410047232.2A patent/CN104113859B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201478455U (en) * | 2009-06-19 | 2010-05-19 | 青岛海信移动通信技术股份有限公司 | Multiplex antenna and communication electronic product therewith |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104113859A (en) | 2014-10-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101965718B (en) | De-emphasis circuit for a voltage mode driver used to communicate via a differential communication link | |
| SG128568A1 (en) | Wireless local area network communications module and integrated chip package | |
| JP2004364237A (en) | Time-division power amplification module | |
| EP3944506A1 (en) | Radio frequency front-end circuit and mobile terminal | |
| US20140315497A1 (en) | Wireless communication apparatus and antenna switching method thereof | |
| CN101366049A (en) | Radio frequency identification device systems | |
| CN106535308B (en) | A kind of method and system of intelligent control WIFI transmission ranges | |
| CN107481674A (en) | Display device | |
| CN107612577A (en) | A kind of channel selecting system, method and electronic equipment | |
| JP2004140480A (en) | Electronic circuit, method for modulating, and, apparatus and method for information processing | |
| CN103778673A (en) | Electronic communication device, electronic label and electronic non-stop charging system | |
| CN104113859B (en) | The switching method of radio communication device and its antenna | |
| EP2439852B1 (en) | Method for saving terminal electricity and terminal | |
| CN101312362A (en) | Power line carrier and radio frequency bi-network electrical energy meter, communication method thereof | |
| CN207910774U (en) | Power line carrier and wireless double mode formula communication module | |
| CN105630121A (en) | Function reset control device | |
| CN108449742A (en) | A kind of aid demodulation system and method for near-field communication | |
| CN108364450A (en) | A kind of remote controlled transmitting circuit and receiving circuit | |
| CN103679249B (en) | A kind of radio-frequency chip interface circuit | |
| JP2007104325A (en) | Non-contact communication device | |
| CN102378322B (en) | Wireless access node and power consumption-saving method thereof | |
| CN107517067A (en) | A kind of control circuit for reducing intercom power consumption, intercom | |
| CN107733457A (en) | A kind of processing method of radio frequency front end chip and radiofrequency signal | |
| CN104485985B (en) | Letter transfer device and letter transfer method suitable for short-wave radio station communication | |
| CN107370505A (en) | Possess the electronic installation and its means of communication of multi-protocol communication pattern |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |