CN103856226B - A kind of WLAN antenna system and data transmission method - Google Patents
A kind of WLAN antenna system and data transmission method Download PDFInfo
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- CN103856226B CN103856226B CN201210512786.6A CN201210512786A CN103856226B CN 103856226 B CN103856226 B CN 103856226B CN 201210512786 A CN201210512786 A CN 201210512786A CN 103856226 B CN103856226 B CN 103856226B
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Abstract
The embodiment of the invention discloses a kind of WLAN antenna system and data transmission method, for solving the problem of WLAN antenna system upstream sensitivity loss.This system comprises: aerial array and at least one WiFi intelligent antenna subsystem, and WiFi intelligent antenna subsystem comprises the sub-level system of WiFi, radio frequency and antenna chooser level system; The sub-level system of WiFi comprises transmitting terminal and receiving terminal, and radio frequency and antenna chooser level system comprise radio-frequency (RF) switch and transmit-receive switch, and radio-frequency (RF) switch comprises input and some roads output, and transmit-receive switch comprises input, the first output and the second output; On transmission channel, transmitting terminal is connected with the input of radio-frequency (RF) switch, and a road output of radio-frequency (RF) switch is connected with the first output, and all the other outputs of radio-frequency (RF) switch are connected with aerial array; On receive path, receiving terminal is connected with the second output, and the input of transmit-receive switch is connected with in aerial array antenna.
Description
Technical field
The present invention relates to WLAN (wireless local area network) (WirelessLocalAreaNetwork is called for short WLAN) technical field, especially relate to a kind of WLAN antenna system and data transmission method.
Background technology
Along with the development of computer network and wireless communication technology, WLAN also obtains fast development and extensive use.Distinctly with cable network be; because WLAN uses radio band; often can there is violent change in channel; thus directly cause uncertain channel fading; in addition, wireless channel also faces the interference of multi-path jamming and other wireless devices of space, and wireless frequency is as the resource of preciousness; have strict frequency and bandwidth restriction to WLAN (wireless local area network), these factors all directly cause WLAN (wireless local area network) also to there is certain gap with traditional ethernet in performance and speed etc.At present, for interference-limited wireless communication system, propose and utilize spatial domain resource, adopt the means of multiaerial system to improve capacity.
Wherein, intelligent antenna technology intelligently, automatically can select antenna or adjustment antenna parameter, to adapt to the continuous change of wireless channel, antenna system is become have the antenna system of " dynamically " property and " intelligence " property, thus the business experience of lifting WLAN user.Existing WLAN antenna system generally includes Wireless Fidelity (WirelessFidelity, be called for short WiFi) subsystem, Radio Frequency Subsystem, antenna chooser system and aerial array, WiFi subsystem comprises data transmitting terminal and receiving terminal, wherein, transmitting terminal connects not moved end, transmit-receive switch one tunnel in Radio Frequency Subsystem, receiving terminal connects not moved end, another road of transmit-receive switch, transmit-receive switch moved end connects the moved end of radio-frequency (RF) switch (as single pole multiple throw) in Radio Frequency Subsystem, the not moved end of radio-frequency (RF) switch connects the different antennae in aerial array respectively, the antenna selection signals line that WiFi subsystem exports connects the control signal end of radio-frequency (RF) switch, when receiving data, the wireless signal of eating dishes without rice or wine that antenna receives needs after radio-frequency (RF) switch in antenna chooser system, again through transmit-receive switch, finally be sent on the receiving terminal of WiFi subsystem, but because radio-frequency (RF) switch can bring Insertion Loss, antenna system is made to produce extra loss of sensitivity, reduce up throughput.
Summary of the invention
Embodiments provide a kind of WLAN antenna system and data transmission method, for solving the problem of WLAN antenna system upstream sensitivity loss.
In view of this, first aspect present invention provides a kind of WLAN (wireless local area network) WLAN antenna system, can comprise:
Aerial array and at least one Wireless Fidelity WiFi intelligent antenna subsystem, described WiFi intelligent antenna subsystem comprises the sub-level system of WiFi, radio frequency and antenna chooser level system;
The sub-level system of described WiFi comprises transmitting terminal and receiving terminal, described radio frequency and antenna chooser level system comprise radio-frequency (RF) switch and transmit-receive switch, described radio-frequency (RF) switch comprises input and some roads output, and described transmit-receive switch comprises input, the first output and the second output;
Wherein, on transmission channel, described transmitting terminal is connected with the input of described radio-frequency (RF) switch, and a road output of described radio-frequency (RF) switch is connected with the first output of described transmit-receive switch, and all the other outputs of radio-frequency (RF) switch are connected with described aerial array;
On receive path, described receiving terminal is connected with the second output of described transmit-receive switch, and the input of described transmit-receive switch is connected with the antenna of in described aerial array.
In the implementation that the first is possible, day line options control port and transmitting-receiving selection control port is also comprised in the sub-level system of described WiFi, antenna selection signals line connects the control signal port of described sky line options control port and described radio-frequency (RF) switch, and transmitting-receiving selects holding wire to connect the control signal port of described transmitting-receiving selection control port and described transmit-receive switch;
The sub-level system of described WiFi, selects control signal for the control signal port transmitting antenna by radio-frequency (RF) switch described in antenna selection signals alignment, according to described sky line options control signal, its input is connected corresponding output to make described radio-frequency (RF) switch;
The sub-level system of described WiFi, also for being selected holding wire to select control signal to the control signal port transmission transmitting-receiving of described transmit-receive switch by transmitting-receiving, select control signal that its input is connected the first output or the second output to make described transmit-receive switch according to described transmitting-receiving.
In conjunction with the first possible implementation of first aspect or first aspect, in the implementation that the second is possible, emission amplifier and reception amplifier is also comprised in described WLAN antenna system, described emission amplifier is connected between transmitting terminal and described radio-frequency (RF) switch input, and described reception amplifier is connected between receiving terminal and described transmit-receive switch second output.
In conjunction with the implementation that the first or the second of first aspect or first aspect are possible, in the implementation that the third is possible, at least one WiFi intelligent antenna subsystem described is specially two WiFi intelligent antenna subsystems, comprises a WiFi intelligent antenna subsystem and the 2nd WiFi intelligent antenna subsystem; Described WLAN antenna system also comprises dual-frequency combining subsystem, and described dual-frequency combining subsystem is connected between described two WiFi intelligent antenna subsystems and described aerial array.
In conjunction with the third possible implementation of first aspect, in the 4th kind of possible implementation, described dual-frequency combining subsystem comprises several duplexers, each described duplexer comprises conjunction terminal and two-way branch end, one tunnel branch end of each described duplexer connects an output of a WiFi intelligent antenna subsystem transmission channel, another road branch end connects an output of the 2nd WiFi intelligent antenna subsystem transmission channel, closes terminal and is connected with the antenna of in described aerial array; And, wherein a road branch end of first duplexer connects the input of a WiFi intelligent antenna subsystem receive path, another road branch end connects the input of the 2nd WiFi intelligent antenna subsystem receive path, closes terminal and is connected with the first antenna in described aerial array.
In conjunction with any one possible implementation of first aspect or first aspect, in the 5th kind of possible implementation, described radio-frequency (RF) switch is single pole multiple throw or diode array; Described transmit-receive switch is single-pole double-throw switch (SPDT) or diode array.
Second aspect present invention provides a kind of data transmission method, and be applied to WLAN (wireless local area network) WLAN antenna system as above, described method can comprise:
When getting the instruction of transmitting data, send the first transmitting-receiving to transmit-receive switch and select control signal, select control signal that its input is connected the first output to make described transmit-receive switch according to described first transmitting-receiving, send first day line options control signal to radio-frequency (RF) switch, according to described first day line options control signal, its input is connected corresponding output to make described radio-frequency (RF) switch;
When getting the instruction receiving data, control to disconnect transmission channel, send the second transmitting-receiving to described transmit-receive switch and select control signal, select control signal that its input is connected the second output to make described transmit-receive switch according to described second transmitting-receiving.
In the implementation that the first is possible, described control disconnects transmission channel and comprises:
Send second day line options control signal to described radio-frequency (RF) switch, according to described second day line options control signal, its input is connected its output be connected with the first output of transmit-receive switch to make described radio-frequency (RF) switch.
In the implementation that the second is possible, described control disconnects transmission channel and comprises:
Control to turn off the emission amplifier on transmission channel.
As can be seen from the above technical solutions, the WLAN antenna system that the embodiment of the present invention provides and data transmission method, radio-frequency (RF) switch is arranged between transmitting terminal and transmit-receive switch, the input of transmit-receive switch directly connects an antenna, second output directly connects receiving terminal, and transmit-receive switch and receiving terminal are without radio-frequency (RF) switch; And a road output of radio-frequency (RF) switch is connected with the first output of transmit-receive switch, all the other outputs are directly connected with antenna; Have employed the asymmetric hardware circuit of transmitting-receiving, transmission channel by radio-frequency (RF) switch switched antenna, receive path fixed antenna, without the need to through radio-frequency (RF) switch; Can solve when receiving data, data cause Insertion Loss through radio-frequency (RF) switch, cause the problem of the reduction of the loss of upstream sensitivity and up covering performance.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme of the embodiment of the present invention, be briefly described describing the required accompanying drawing used to embodiment below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
The structural representation of the WLAN antenna system that Fig. 1 provides for the embodiment of the present invention;
Another structural representation of the WLAN antenna system that Fig. 2 provides for the embodiment of the present invention;
The operation principle schematic diagram of radio-frequency (RF) switch in the WLAN antenna system that Fig. 3 provides for the embodiment of the present invention;
The another structural representation of the WLAN antenna system that Fig. 4 provides for the embodiment of the present invention;
The another structural representation of the WLAN antenna system that Fig. 5 provides for the embodiment of the present invention;
The schematic flow sheet of the data transmission method that Fig. 6 provides for the embodiment of the present invention;
Another schematic flow sheet of the data transmission method that Fig. 7 provides for the embodiment of the present invention;
Another schematic flow sheet of the data transmission method that Fig. 8 provides for the embodiment of the present invention.
Embodiment
Embodiments provide a kind of WLAN antenna system and data transmission method, for solving the problem of WLAN antenna system upstream sensitivity loss.
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making other embodiments all obtained under creative work prerequisite, belong to the scope of protection of the invention.
Below be described in detail respectively.
Please refer to Fig. 1, the structural representation of a kind of WLAN antenna system that Fig. 1 provides for the embodiment of the present invention, wherein, this WLAN antenna system comprises:
Aerial array 11 and at least one WiFi intelligent antenna subsystem 10, described WiFi intelligent antenna subsystem 10 comprises the sub-level system 101 of WiFi, radio frequency and antenna chooser level system 102;
The sub-level system 101 of described WiFi comprises transmitting terminal 1011 and receiving terminal 1012, described radio frequency and antenna chooser level system 102 comprise radio-frequency (RF) switch 1021 and transmit-receive switch 1022, described radio-frequency (RF) switch 1021 comprises input and some roads output, and described transmit-receive switch 1022 comprises input, the first output and the second output;
Wherein, on transmission channel, described transmitting terminal 1011 is connected with the input of described radio-frequency (RF) switch 1021, and a road output of described radio-frequency (RF) switch 1021 is connected with the first output of described transmit-receive switch 1022, and all the other outputs of radio-frequency (RF) switch 1021 are connected with described aerial array 11; On receive path, described receiving terminal 1012 is connected with the second output of described transmit-receive switch 1022, and the input of described transmit-receive switch 1022 is connected with an antenna in described aerial array 11.Like this, by fixing antenna receiving signal, and antenna is selected by radio-frequency (RF) switch 1021 when transmitting.Day line options control port and transmitting-receiving selection control port is also comprised in the sub-level system 101 of described WiFi, antenna selection signals line connects the control signal port of described sky line options control port and described radio-frequency (RF) switch 1021, and transmitting-receiving selects holding wire to connect the control signal port of described transmitting-receiving selection control port and described transmit-receive switch 1022;
The sub-level system 101 of WiFi, select control signal for the control signal port transmitting antenna by radio-frequency (RF) switch 1021 described in antenna selection signals alignment, according to described sky line options control signal, its input is connected corresponding output to make described radio-frequency (RF) switch 1021; Also for being selected holding wire to select control signal to the control signal port transmission transmitting-receiving of described transmit-receive switch 1022 by transmitting-receiving, select control signal that its input is connected the first output to make described transmit-receive switch 1022 according to described transmitting-receiving to be used for transmitting, or connect the second output for Received signal strength.In the embodiment of the present invention, described radio-frequency (RF) switch 1021 can be single pole multiple throw or diode array, and described transmit-receive switch 1022 can be single-pole double-throw switch (SPDT) or diode array.
It should be noted that, radio-frequency (RF) switch 1021 and transmit-receive switch 1022 do not limit input and output, in embodiments of the present invention, for convenience of describing, the port of data input in radio-frequency (RF) switch 1021 and transmit-receive switch 1022 is called input, the port that data export is called output, but can not as limitation of the invention.
Being understandable that, during transmitting data, connecting input and first output of transmit-receive switch 1022 by controlling transmit-receive switch 1022, make the input of transmit-receive switch 1022 connect the output of radio-frequency (RF) switch 1021, become an output of transmission channel; The same with prior art like this, an antenna transmission signal in aerial array 11 is selected arbitrarily by radio-frequency (RF) switch 1021.And when receiving data, connect input and second output of transmit-receive switch 1022 by controlling transmit-receive switch 1022, make the input of transmit-receive switch 1022 directly connect the receiving terminal 1012 of the sub-level system 101 of WiFi; Like this, be different from prior art, the fixing antenna receiving signal connected with the input of transmit-receive switch 1022 in the present invention, and without the need to selecting antenna through radio-frequency (RF) switch 1021.
Wherein, the sub-level system 101 of WiFi, also for the transmitting-receiving of the process of WiFi protocol data, cable network data, Ethernet data to the forwarding etc. of WiFi data, generally include the assemblies such as processor, WiFi chip, memory, Ethernet chip.Wherein processor can be central processing unit (centralprocessingunit, be called for short CPU), or network processing unit (networkprocessor, be called for short NP), or ready-made programmable gate array (fieldprogrammablegatearray is called for short FPGA) etc.
The interface of the sub-level system 101 of WiFi comprises: radio-frequency receiving-transmitting port, sky line options control port, transmitting-receiving select control port and some wired network interfaces etc.; Wherein, a transmitting terminal 1011 and a receiving terminal 1012 form one group of radio-frequency receiving-transmitting port, and each group radio-frequency receiving-transmitting port corresponding has corresponding sky line options control port and transmitting-receiving to select control port.Wherein, the quantity of it line options control port is consistent with the quantity of the control signal port of radio-frequency (RF) switch 1021, within each day, line options control port connects a control signal port of radio-frequency (RF) switch 1021 respectively, such as radio-frequency (RF) switch 1021 is SP3T switch, then radio-frequency (RF) switch 1021 has 3 control signal ports, and corresponding sky line options control port quantity is also 3.Similarly, transmitting-receiving selects the quantity of control port consistent with the quantity of the control signal port of transmit-receive switch 1022, and each transmitting-receiving selects control port to connect a control signal port of transmit-receive switch 1022 respectively.In the embodiment of the present invention, described transmit-receive switch 1022 comprises 2 control signal ports, then corresponding transmitting-receiving selects control port quantity to be also 2.
It should be noted that, many group radio-frequency receiving-transmitting ports can be comprised in the sub-level system 101 of WiFi, and, in the sub-level system 101 of WiFi, the number often organizing sky line options control port corresponding to radio-frequency receiving-transmitting port can be the same or different, wherein, only for one group of radio-frequency receiving-transmitting port in Fig. 1, show the annexation of the sub-level system 101 of WiFi and radio frequency and antenna chooser level system 102 and aerial array, but can not as limitation of the invention.
Radio frequency and antenna chooser level system 102, sky line options control signal for providing according to the sub-level system 101 of WiFi selects the radio-frequency channel of different antennae, the signal to be sent that sub-for WiFi level system 101 exports is sent by antenna, and the signal that antenna receives is sent into the sub-level system 101 of WiFi etc.
Aerial array 11, for air-launched, receive electromagnetic wave.Signal is sent to website (station is called for short STA) or receives the wireless signal of STA.
Alternatively, emission amplifier can also be comprised in described WiFi intelligent antenna subsystem 10, such as power amplifier (PowerAmplifier, be called for short PA), and reception amplifier, such as low noise amplifier (LowNoiseAmplifier is called for short LNA).Described emission amplifier is positioned on transmission channel, between the input being connected to transmitting terminal 1011 and described radio-frequency (RF) switch 1021; Described reception amplifier is positioned on receive path, is connected between receiving terminal 1021 and the second output of described transmit-receive switch 1022.
Optionally, at least one WiFi intelligent antenna subsystem described is specially two WiFi intelligent antenna subsystems; When described WLAN antenna system comprises two WiFi intelligent antenna subsystems 10, described WLAN antenna system also comprises dual-frequency combining subsystem, described dual-frequency combining subsystem is connected between two WiFi intelligent antenna subsystems 10 and aerial array 11, can realize, by signal syntheses one tunnel of multiple frequency, reaching the object of common antenna.It should be noted that, current WLAN is only to be operated in 5 Gigahertz GHz and 2.4GHz, two frequency ranges, therefore the WiFi intelligent antenna subsystem of a 5GHz can be comprised in described WLAN antenna system, or the WiFi intelligent antenna subsystem of a 2.4GHz, or the WiFi intelligent antenna subsystem of a 5GHz and the WiFi intelligent antenna subsystem of a 2.4GHz; But, along with the development of wireless communication technology, WLAN may be operated in more multiband time, then can comprise more WiFi intelligent antenna subsystem, its structure is similar with principle, and the present invention is not restricted this.
From the above, the WLAN antenna system that the embodiment of the present invention provides, radio-frequency (RF) switch 1021 is arranged between transmitting terminal 1011 and transmit-receive switch 1022, the input of transmit-receive switch 1022 directly connects an antenna, second output directly connects receiving terminal 1012, and transmit-receive switch 1022 and receiving terminal 1012 are without radio-frequency (RF) switch 1021; And a road output of radio-frequency (RF) switch 1021 is connected with the first output of transmit-receive switch 1022, all the other outputs are directly connected with antenna; Have employed the asymmetric hardware circuit of transmitting-receiving, transmission channel by radio-frequency (RF) switch switched antenna, receive path fixed antenna, without the need to through radio-frequency (RF) switch; Can solve when receiving data, data cause Insertion Loss through radio-frequency (RF) switch 1021, cause the problem that upstream sensitivity loses and up covering performance reduces.
Next, on the WLAN antenna system basis shown in Fig. 1, with an embody rule scene for example, introduce structure and the operation principle of WLAN antenna system provided by the invention in detail.
Refer to Fig. 2, be the structural representation of the another kind of WLAN antenna system that the embodiment of the present invention provides, wherein, this WLAN antenna system comprises:
Aerial array 11 and a WiFi intelligent antenna subsystem 10, described WiFi intelligent antenna subsystem 10 comprises the sub-level system 101 of WiFi, radio frequency and antenna chooser level system 102;
The sub-level system 101 of described WiFi comprises two groups of radio-frequency receiving-transmitting ports, and first group of radio-frequency receiving-transmitting port is transmitting terminal 1011 and receiving terminal 1012, second group of radio-frequency receiving-transmitting port is transmitting terminal 1011 ' and receiving terminal 1012 '.In described radio frequency and antenna chooser level system 102, the radio-frequency (RF) switch 1021 of corresponding transmitting terminal 1011 and receiving terminal 1012 is hilted broadsword four throw switch, and transmit-receive switch 1022 is single-pole double-throw switch (SPDT); In described radio frequency and antenna chooser level system 102, the radio-frequency (RF) switch 1021 ' of corresponding transmitting terminal 1011 ' and receiving terminal 1012 ' is SP3T switch, and transmit-receive switch 1022 ' is single-pole double-throw switch (SPDT).
Next, in conjunction with first group of radio-frequency receiving-transmitting port, introduce structure and the operation principle of the WLAN antenna system that the embodiment of the present invention provides.
Described radio-frequency (RF) switch 1021 comprises input 1021a and 4 road outputs, and described transmit-receive switch 1022 comprises input 1022a, the first output 1022b and the second output 1022c; Wherein, described transmitting terminal 1011 is connected with the input 1021a of described radio-frequency (RF) switch 1021, one road output 1021b of described radio-frequency (RF) switch 1021 is connected with the first output 1022b of described transmit-receive switch 1022, and all the other 3 road output 1021c of radio-frequency (RF) switch 1021 are connected with three antennas in described aerial array 11 respectively; Described receiving terminal 1012 is connected with the second output 1022c of described transmit-receive switch 1022, and the input 1022a of described transmit-receive switch 1022 is connected with an antenna in described aerial array 11, as shown in Figure 2.
Described radio-frequency (RF) switch 1021 ' comprises input 1021 ' a and 3 road outputs, and described transmit-receive switch 1022 ' comprises input 1022 ' a, the first output 1022 ' b and the second output 1022 ' c; Wherein, described transmitting terminal 1011 ' is connected with the input 1021 ' a of described radio-frequency (RF) switch 1021 ', one road output 1021 ' b of described radio-frequency (RF) switch 1021 ' is connected with the first output 1022 ' b of described transmit-receive switch 1022 ', and all the other 2 road output 1021 ' c of radio-frequency (RF) switch 1021 ' are connected with two antennas in described aerial array 11 respectively; Described receiving terminal 1012 ' is connected with the second output 1022 ' c of described transmit-receive switch 1022 ', and the input 1022 ' a of described transmit-receive switch 1022 ' is connected with an antenna in described aerial array 11.
As shown in Figure 2, in the embodiment of the present invention, in the sub-level system 101 of WiFi, also comprise day line options control port and transmitting-receiving selection control port; Concrete, each group radio-frequency receiving-transmitting port corresponding is provided with corresponding sky line options control port and control port is selected in transmitting-receiving; The quantity of it line options control port is consistent with the quantity of the control signal port of radio-frequency (RF) switch, and transmitting-receiving selects the quantity of control port consistent with the quantity of the control signal port of transmit-receive switch.Corresponding transmitting terminal 1011 is connected the control signal port of radio-frequency (RF) switch 1021 with the sky line options control port 1013 of receiving terminal 1012, specifically connect by antenna selection signals line (also can be described as the control line of antenna selection signals); Corresponding transmitting terminal 1011 selects control port 1014 to be connected the control signal port of transmit-receive switch 1022 with the transmitting-receiving of receiving terminal 1012, specifically selects holding wire (also can be described as the control line that signal is selected in transmitting-receiving) to connect by transmitting-receiving.In the present embodiment, radio-frequency (RF) switch 1021 is hilted broadsword four throw switch, then radio-frequency (RF) switch 1021 comprises 4 control signal ports, and accordingly, sky line options control port 1013 comprises 4 ports; Transmit-receive switch 1022 is single-pole double-throw switch (SPDT), then transmit-receive switch 1022 comprises 2 control signal ports, and accordingly, transmitting-receiving selects control port 1014 to comprise 2 ports.In like manner, radio-frequency (RF) switch 1021 ' is SP3T switch, then radio-frequency (RF) switch 1021 ' comprises 3 control signal ports, and accordingly, sky line options control port 1013 ' comprises 3 ports; Transmit-receive switch 1022 ' is single-pole double-throw switch (SPDT), then transmit-receive switch 1022 ' comprises 2 control signal ports, and accordingly, transmitting-receiving selects control port 1014 ' to comprise 2 ports.
For first group of radio-frequency receiving-transmitting port, the sub-level system 101 of WiFi, select control signal for the control signal port transmitting antenna by antenna selection signals alignment radio-frequency (RF) switch 1021, according to described sky line options control signal, input 1021a is connected corresponding output to make described radio-frequency (RF) switch 1021; Also for being selected holding wire to select control signal to the control signal port transmission transmitting-receiving of transmit-receive switch 1022 by transmitting-receiving, select control signal that input 1022a is connected the first output 1022b to make described transmit-receive switch 1022 according to described transmitting-receiving to be used for transmitting, or connect the second output 1022c for Received signal strength.
Alternatively, emission amplifier can also be comprised in described WLAN antenna system, such as PA, and reception amplifier, such as LNA.Emission amplifier is positioned on transmission channel, and reception amplifier is positioned on receive path.As shown in Figure 2, described transmitting terminal 1011 is connected with the input of emission amplifier 1023, and the output of emission amplifier 1023 is connected with the input 1021a of radio-frequency (RF) switch 1021; Described receiving terminal 1012 is connected with the output of reception amplifier 1024, and the input of reception amplifier 1024 is connected with the second output 1022c of described transmit-receive switch 1022.Wherein, described emission amplifier 1023 is sent by antenna after amplifying for the signal to be sent exported WiFi level system 101 again; Described reception amplifier 1024 is for amplifying the sub-level system 101 of rear feeding WiFi to the signal that antenna receives;
Next, in conjunction with first group of radio-frequency receiving-transmitting port, and corresponding radio-frequency (RF) switch 1021 and transmit-receive switch 1022, introduce structure and the operation principle of the WLAN antenna system that the embodiment of the present invention provides.
In embodiments of the present invention, the input 1021a of described radio-frequency (RF) switch 1021 can be thought in the moved end of hilted broadsword four throw switch, and four road outputs of radio-frequency (RF) switch 1021 can not be thought in moved end in four tunnels of hilted broadsword four throw switch; Wherein, a road output 1021b of radio-frequency (RF) switch 1021 is connected with the first output 1022b of transmit-receive switch 1022, and its excess-three road output 1021c is direct to be respectively connected with the antenna in aerial array 11.
Can in the lump with reference to figure 3, Fig. 3 is the operation principle schematic diagram of radio-frequency (RF) switch 1021 in the present embodiment, wherein, antenna selection signals line is one group of line (representing with adding thick line in figure), if radio-frequency (RF) switch in present embodiment 1021 is hilted broadsword four throw switch, namely four signal controlling ends are had, antenna selection signals line connects four signal controlling ends of radio-frequency (RF) switch 1021 respectively, control conducting and the disconnection of each end respectively, synchronization, a radio-frequency (RF) switch 1021 can only have one hold conducting, the control signal exported by the sub-level system 101 of WiFi is controlled; Such as high level conducting, low level disconnects, then the antenna selection signals of sub-level system 101 output of synchronization WiFi, one can only be had to be high level, and all the other are then low level.
As shown in Figure 3, be hilted broadsword four throw switch for radio-frequency (RF) switch 1021, wherein, the input that transmits can think the input 1021a of radio-frequency (RF) switch 1021, J
1, J
2, J
3, J
4four road outputs, V
1, V
2, V
3, V
4be the control signal port that this four roads output of control is turned on or off respectively, control being turned on or off of this four roads output by high and low level.In the sub-level system 101 of WiFi, sky line options control port 1013 is connected with these four control signal ports respectively by antenna selection signals line, if the output conducting of Yao Rangmou road, the antenna selection signals line then connecting this control signal port exports high level, other antenna selection signals line low levels, can reference table one, for in radio-frequency (RF) switch 1021 shown in Fig. 3, the output level of control signal port and the relation of output conducting are illustrated to show.
Table one
| V 1 | V 2 | V 3 | V 4 | |
| J 1Conducting | High level | Low level | Low level | Low level |
| J 2Conducting | Low level | High level | Low level | Low level |
| J 3Conducting | Low level | Low level | High level | Low level |
| J 4Conducting | Low level | Low level | Low level | High level |
Under this application scenarios, described transmit-receive switch 1022 is single-pole double-throw switch (SPDT), and described transmit-receive switch input 1022a can be thought in the moved end of single-pole double-throw switch (SPDT), and the two-way of single-pole double-throw switch (SPDT) can not think the output of transmit-receive switch 1022 in moved end; In present embodiment, first output 1022b of transmit-receive switch 1022 is connected with the output 1021b of radio-frequency (RF) switch 1021, second output 1022c is connected with reception amplifier 1024 input, and the input 1022a of transmit-receive switch 1022 is directly connected with the antenna of in aerial array 11;
Be understandable that, the selection control principle of transmit-receive switch 1022 with reference to the related content of aforementioned radio-frequency (RF) switch 1021 days line options control principles, can repeat no more herein.
When the processor in the sub-level system 101 of WiFi gets the instruction of transmitting data, the sub-level system of WiFi 101 selects holding wire to select control signal to control signal port transmission first transmitting-receiving of described transmit-receive switch 1022 by transmitting-receiving, selects control signal that its input 1022a is connected the first output 1022b to make described transmit-receive switch 1022 according to described first transmitting-receiving; The sub-level system 101 of WiFi sends first day line options control signal by the control signal port of radio-frequency (RF) switch 1021 described in antenna selection signals alignment, according to described first day line options control signal, its input 1021a is connected corresponding output to make described radio-frequency (RF) switch 1021.In transmitting data process, data export from WiFi level system 101 transmitting terminal 1011, successively through the input 1021a of radio-frequency (RF) switch 1021, output 1021b, first output 1022b of the transmit-receive switch 1022 and input 1022a of transmit-receive switch 1022, finally by aerial array 11, data are launched, or, data export from WiFi level system 101 transmitting terminal 1011, successively through the input 1021a of radio-frequency (RF) switch 1021, data are launched finally by aerial array 11 by any one output 1021c; Be appreciated that in transmitting data process, transmit-receive switch 1022 also becomes an output, the antenna that transmit-receive switch 1022 connects, and also can select to be used for transmitting data for radio-frequency (RF) switch 1021.
Preferably, if on transmission channel transmitting terminal 1011 and described radio-frequency (RF) switch 1021 input 1021a between be provided with emission amplifier 1023, after then data export from WiFi level system 101 transmitting terminal 1011, first amplify through emission amplifier 1023, then through radio-frequency (RF) switch 1021 input 1021a thus data are launched; Be understandable that, if receive path is provided with reception amplifier 1024 between receiving terminal 1012 and the second output 1022c of described transmit-receive switch 1022, can when transmitting data, reception amplifier 1024 is controlled to turn off, wherein, turning on and off of reception amplifier 1024 does not affect transmitting flow process, does not do concrete restriction herein.
When the processor in the sub-level system 101 of WiFi gets the instruction receiving data, control to disconnect transmission channel; The sub-level system of WiFi 101 selects holding wire to select control signal to control signal port transmission second transmitting-receiving of described transmit-receive switch 1022 by transmitting-receiving, selects control signal that its input 1022a is connected the second output 1022c to make described transmit-receive switch 1022 according to described second transmitting-receiving;
Wherein, control to disconnect transmission channel, can specifically: the sub-level system 101 of WiFi sends second day line options control signal by the control signal port of radio-frequency (RF) switch 1021 described in antenna selection signals alignment, according to described second day line options control signal, its input 1021a is connected its output 1021b be connected with the first output 1022b of transmit-receive switch 1022 to make described radio-frequency (RF) switch 1021.Receive in data procedures, the data that aerial array 11 receives, input from the input 1022a of transmit-receive switch 1022, through the second output 1022c of transmit-receive switch 1022, finally send into WiFi level system 101 receiving terminal 1012; Be appreciated that in the embodiment of the present invention and receive data by fixing antenna, that is, the antenna connected by the input 1022a of transmit-receive switch 1022 receives data, and without the need to selecting antenna through radio-frequency (RF) switch 1021.
If receive path is provided with reception amplifier 1024 between receiving terminal 1012 and the second output 1022c of described transmit-receive switch 1022, the data then aerial array 11 received are successively after the input 1022a and the second output 1022c of transmit-receive switch 1022, first amplify through reception amplifier 1024, then send into WiFi level system 101 receiving terminal 1012, wherein, if on transmission channel transmitting terminal 1011 and described radio-frequency (RF) switch 1021 input 1021a between be provided with emission amplifier 1023, control to disconnect transmission channel, can be specially: control to turn off the emission amplifier 1023 on transmission channel, namely the sub-level system of WiFi 101 is only needed to select holding wire to select control signal to control signal port transmission second transmitting-receiving of described transmit-receive switch 1022 by transmitting-receiving, select control signal that its input 1022a is connected the second output 1022c to make described transmit-receive switch 1022 according to described second transmitting-receiving, and the sub-level system 101 of WiFi does not need the control signal port to radio-frequency (RF) switch 1021 to send second day line options control signal, owing to have turned off emission amplifier 1023, therefore can think which output the input 1021a of radio-frequency (RF) switch 1021 is connected to and does not affect data receiver.
Be understandable that, during transmitting data, the output 1021c of the radio-frequency (RF) switch 1021 and input 1022a of transmit-receive switch 1022 is all outputs of transmission channel, and namely data export from the output of transmission channel, and export the antenna in aerial array 11 to; When receiving data, the input 1022a of transmit-receive switch 1022 is inputs of receive path, and an antenna namely in aerial array 11 receives eats dishes without rice or wine wireless signal and inputs to the sub-level system 101 of WiFi from the input of receive path.
From the above, the WLAN antenna system that the embodiment of the present invention provides, is arranged on radio-frequency (RF) switch between transmitting terminal and transmit-receive switch, and the input of transmit-receive switch directly connects an antenna, second output directly connects receiving terminal, and transmit-receive switch and receiving terminal are without radio-frequency (RF) switch; And a road output of radio-frequency (RF) switch is connected with the first output of transmit-receive switch, all the other outputs are directly connected with antenna; Have employed the asymmetric hardware circuit of transmitting-receiving, namely transmission channel is by radio-frequency (RF) switch switched antenna, receive path fixed antenna, without the need to through radio-frequency (RF) switch; Can solve when receiving data, data cause Insertion Loss through radio-frequency (RF) switch, cause the problem of the reduction of the loss of upstream sensitivity and up covering performance.
Be understandable that, in the embodiment of the present invention, described radio-frequency (RF) switch can be diode array, can with reference to figure 4, another structural representation of the WLAN antenna system that Fig. 4 provides for the embodiment of the present invention, in described radio frequency and antenna chooser level system 102, radio-frequency (RF) switch 1021 and radio-frequency (RF) switch 1021 ' are diode array, for the radio-frequency (RF) switch 1021 of corresponding transmitting terminal 1011 and receiving terminal 1012, as shown in Figure 4, in this embodiment, diode array can be understood as four diodes in parallels, the input 1021a of described radio-frequency (RF) switch 1021 can be the common port of diode array, this common port is connected with emission amplifier 1023, according to the antenna selection signals that the sub-level system 101 of WiFi exports, control being turned on or off of diode in four in parallel diode branch respectively, in some embodiments, each diode is provided with the bias level that lead-in wire regulates input, the height of bias level can control conducting and the disconnection of diode.Antenna selection signals line in the sub-level system of WiFi 101 is connected with the lead-in wire of each diode, controls the height of the bias level of each diode, thus controls diode whether conducting; In this embodiment, as shown in Figure 4, a diode branch is connected with the first output 1022b of transmit-receive switch 1022, and branch road residing for its excess-three diode is direct to be respectively connected with the antenna in aerial array 11.
Be understandable that, the operation principle of the antenna system of WLAN shown in Fig. 4 is consistent with the operation principle of WLAN antenna system shown in above-mentioned Fig. 2, no longer specifically sets forth herein.
Please refer to Fig. 5, another structural representation of the WLAN antenna system that Fig. 5 provides for the embodiment of the present invention, wherein, described WLAN antenna system can comprise aerial array 11 and two WiFi intelligent antenna subsystems 10, described two WiFi intelligent antenna subsystems 10 are respectively a WiFi intelligent antenna subsystem 10a and the 2nd WiFi intelligent antenna subsystem 10b, described WLAN antenna system also comprises dual-frequency combining subsystem 12, and described dual-frequency combining subsystem 12 is connected between described two WiFi intelligent antenna subsystems 10 and aerial array 11;
Further, described dual-frequency combining subsystem 12 comprises several duplexers (Diplexer), and each described duplexer comprises conjunction terminal and two-way branch end,
It should be noted that, duplexer does not limit branch end and closes terminal, in embodiments of the present invention, for convenience of describing, the port that single-frequency point data in duplexer input or output is called branch end, the port that multi-frequency point data inputs or outputs is called conjunction terminal, but can not as limitation of the invention.
As shown in Figure 5, this system is the WLAN antenna system of double frequency shared antenna, in some embodiments, the sub-level system frequency of WiFi in a WiFi intelligent antenna subsystem 10a is 5 Gigahertz GHz, and the sub-level system frequency of WiFi in the 2nd WiFi intelligent antenna subsystem 10b is 2.4GHz.Add duplexer at radio frequency and between antenna chooser level system 102 and aerial array 11, can realize, by signal syntheses one tunnel of multiple frequency, reaching the object of common antenna.
One tunnel branch end of each described duplexer connects an output of a WiFi intelligent antenna subsystem 10a transmission channel, another road branch end connects an output of the 2nd WiFi intelligent antenna subsystem 10b transmission channel, closes terminal and is connected with the antenna of in aerial array 11;
And, wherein a road branch end of first duplexer connects the input of a WiFi intelligent antenna subsystem 10a receive path, another road branch end connects the input of the 2nd WiFi intelligent antenna subsystem 10b receive path, closes terminal and is connected with the first antenna in aerial array 11.
Particularly, as shown in Figure 5, duplexer D
1a road branch end connect the output O of a WiFi intelligent antenna subsystem 10a transmission channel
1, duplexer D
1another road branch end connect the output O of the 2nd WiFi intelligent antenna subsystem 10b transmission channel
1', close the antenna A in terminal and aerial array 11
1be connected; Duplexer D
2a road branch end connect the output O of a WiFi intelligent antenna subsystem 10a transmission channel
2, duplexer D
2another road branch end connect the output O of the 2nd WiFi intelligent antenna subsystem 10b transmission channel
2', close the antenna A in terminal and aerial array 11
2be connected; In like manner, on transmission channel, duplexer D
na road branch end connect the output O of a WiFi intelligent antenna subsystem 10a transmission channel
n, duplexer D
nanother road branch end connect the output O of the 2nd WiFi intelligent antenna subsystem 10b transmission channel
n', close the antenna A in terminal and aerial array 11
nbe connected;
And, wherein due to the output O of a WiFi intelligent antenna subsystem 10a transmission channel
n, be also the input I of a WiFi intelligent antenna subsystem 10a receive path simultaneously
1; The output O of the 2nd WiFi intelligent antenna subsystem 10b transmission channel
n', be also the input I of the 2nd WiFi intelligent antenna subsystem 10b receive path simultaneously
1', therefore, first duplexer D
na road branch end connect the input I of a WiFi intelligent antenna subsystem 10a receive path
1, another road branch end connects the input I of the 2nd WiFi intelligent antenna subsystem 10b receive path
1', close the first antenna A in terminal and aerial array 11
nbe connected.
During transmitting data, the signal that the signal exported by a WiFi intelligent antenna subsystem 10a transmission channel output respectively and the 2nd WiFi intelligent antenna subsystem 10b transmission channel output export, through duplexer, two paths of signals is synthesized a road, be connected on the antenna in aerial array 11, be understandable that, the output 1021c of the radio-frequency (RF) switch 1021 and input 1022a of transmit-receive switch 1022 is all outputs of transmission channel, namely data export from the output of transmission channel, and export the antenna in aerial array 11 to;
When receiving data, the signal sending into WiFi intelligent antenna subsystem 10 is split into two-way by duplexer, send into a WiFi intelligent antenna subsystem 10a receive path input and the 2nd WiFi intelligent antenna subsystem 10b receive path input respectively again, be understandable that, the input 1022a of transmit-receive switch 1022 is inputs of receive path, and the first antenna namely in aerial array 11 receives eats dishes without rice or wine wireless signal and inputs to the sub-level system 101 of WiFi from the input of receive path.
It should be noted that, the sub-level system 101 of WiFi in one WiFi intelligent antenna subsystem 10a and the 2nd WiFi intelligent antenna subsystem 10b, it can comprise many group radio-frequency receiving-transmitting ports, only one group of radio-frequency receiving-transmitting port is comprised for each WiFi intelligent antenna subsystem in Fig. 1, show in the WLAN antenna system of double frequency shared antenna, the annexation of two WiFi intelligent antenna subsystems 10, radio frequency and antenna chooser level system 102, dual-frequency combining subsystem 12 and aerial array 11, but can not as limitation of the invention.
Be understandable that, vibrational power flow in a WiFi intelligent antenna subsystem 10a in this embodiment and the 2nd WiFi intelligent antenna subsystem 10b and function can carry out specific implementation with reference to the WiFi intelligent antenna subsystem in above-described embodiment, no longer specifically describe herein.
From the above, the WLAN antenna system that the embodiment of the present invention provides, radio-frequency (RF) switch 1021 is arranged between transmitting terminal 1011 and transmit-receive switch 1022, the input 1022a of transmit-receive switch 1022 directly connects an antenna, second output 1022c directly connects receiving terminal 1012, and transmit-receive switch 1022 and receiving terminal 1012 are without radio-frequency (RF) switch 1021; And a road output 1021b of radio-frequency (RF) switch 1021 is connected with the first output 1022b of transmit-receive switch 1022, all the other outputs 1021c is directly connected with antenna; Have employed the asymmetric hardware circuit of transmitting-receiving, namely transmission channel is by radio-frequency (RF) switch 1021 switched antenna, receive path fixed antenna, without the need to through radio-frequency (RF) switch 1021; Can solve when receiving data, data cause Insertion Loss through radio-frequency (RF) switch 1021, cause the problem of the reduction of the loss of upstream sensitivity and up covering performance; If this WLAN antenna system is the WLAN antenna system of double frequency shared antenna, then can connects duplexer and multiple signal syntheses one tunnel is connected to antenna again, the number of antenna can be saved, reach the object of common antenna.
For ease of better implementing the WLAN antenna system that the embodiment of the present invention provides, the embodiment of the present invention also provides a kind of data transmission method based on above-mentioned WLAN antenna system.Wherein the implication of noun is identical with said system, and specific implementation details can explanation in frame of reference embodiment.
Please refer to Fig. 6, the structural representation of a kind of data transmission method that Fig. 6 provides for the embodiment of the present invention, wherein, the method is applied to the WLAN antenna system described in above-described embodiment, and the method comprises:
When 610, getting the instruction of transmitting data, send the first transmitting-receiving to transmit-receive switch and select control signal, select control signal that its input is connected the first output to make described transmit-receive switch according to described first transmitting-receiving, send first day line options control signal to radio-frequency (RF) switch, according to described first day line options control signal, its input is connected corresponding output to make described radio-frequency (RF) switch;
Be understandable that, the executive agent of described data transmission method is the processor in the sub-level system 101 of WiFi, and wherein processor can be central processor CPU, or network processing unit NP, or ready-made programmable gate array FPGA etc., do not do concrete restriction herein; And carry out transmitting data instruction by the WiFi protocol stack sofeware of processor in the sub-level system 101 of WiFi and receive the transmission of data command.
When 620, getting the instruction receiving data, control to disconnect transmission channel, send the second transmitting-receiving to described transmit-receive switch and select control signal, select control signal that its input is connected the second output to make described transmit-receive switch according to described second transmitting-receiving.
Preferably, in the embodiment of the present invention, described radio-frequency (RF) switch 1021 can be single pole multiple throw or diode array, and described transmit-receive switch 1022 can be single-pole double-throw switch (SPDT) or diode array;
Below please also refer to the WLAN antenna system shown in Fig. 1, Fig. 2 and Fig. 4, described transmission method is made a concrete analysis of:
When the processor in the sub-level system 101 of WiFi gets the instruction of transmitting data, the sub-level system of WiFi 101 selects holding wire to select control signal to control signal port transmission first transmitting-receiving of described transmit-receive switch 1022 by transmitting-receiving, selects control signal that its input 1022a is connected the first output 1022b to make described transmit-receive switch 1022 according to described first transmitting-receiving; The sub-level system 101 of WiFi sends first day line options control signal by the control signal port of radio-frequency (RF) switch 1021 described in antenna selection signals alignment, according to described first day line options control signal, its input 1021a is connected corresponding output to make described radio-frequency (RF) switch 1021.In transmitting data process, data export from WiFi level system 101 transmitting terminal 1011, successively through the input 1021a of radio-frequency (RF) switch 1021, output 1021b, first output 1022b of the transmit-receive switch 1022 and input 1022a of transmit-receive switch 1022, finally by aerial array 11, data are launched, or, data export from WiFi level system 101 transmitting terminal 1011, successively through the input 1021a of radio-frequency (RF) switch 1021, data are launched finally by aerial array 11 by any one output 1021c; Be appreciated that in transmitting data process, transmit-receive switch 1022 also becomes an output, the antenna that transmit-receive switch 1022 connects, and also can select to be used for transmitting data for radio-frequency (RF) switch 1021.
Preferably, if on transmission channel transmitting terminal 1011 and described radio-frequency (RF) switch 1021 input 1021a between be provided with emission amplifier 1023, after then data export from WiFi level system 101 transmitting terminal 1011, first amplify through emission amplifier 1023, then through radio-frequency (RF) switch 1021 input 1021a thus data are launched; Be understandable that, if receive path is provided with reception amplifier 1024 between receiving terminal 1012 and the second output 1022c of described transmit-receive switch 1022, can when transmitting data, reception amplifier 1024 is controlled to turn off, wherein, turning on and off of reception amplifier 1024 does not affect transmitting flow process, does not do concrete restriction herein.
In one embodiment, when the processor in the sub-level system 101 of WiFi gets the instruction receiving data, can be another schematic flow sheet of described data transmission method with reference to figure 7, Fig. 7,620 can be specially:
When 6201, getting the instruction receiving data, send the second transmitting-receiving to described transmit-receive switch 1022 and select control signal, select control signal that its input 1022a is connected the second output 1022c to make described transmit-receive switch 1022 according to described second transmitting-receiving, send second day line options control signal to described radio-frequency (RF) switch 1021, according to described second day line options control signal, its input 1021a is connected its output be connected with the first output 1022b of transmit-receive switch 1022 to make described radio-frequency (RF) switch 1021;
Namely control to disconnect transmission channel, can specifically: the sub-level system 101 of WiFi sends second day line options control signal by the control signal port of radio-frequency (RF) switch 1021 described in antenna selection signals alignment, according to described second day line options control signal, its input 1021a is connected its output 1021b be connected with the first output 1022b of transmit-receive switch 1022 to make described radio-frequency (RF) switch 1021.
Receive in data procedures, the data that aerial array 11 receives, input from the input 1022a of transmit-receive switch 1022, through the second output 1022c of transmit-receive switch 1022, finally send into WiFi level system 101 receiving terminal 1012; Be appreciated that in the embodiment of the present invention and receive data by fixing antenna, that is, the antenna connected by the input 1022a of transmit-receive switch 1022 receives data, and without the need to selecting antenna through radio-frequency (RF) switch 1021.
In another embodiment, if described WLAN antenna system comprises emission amplifier and reception amplifier, when the processor in the sub-level system 101 of WiFi gets the instruction receiving data, can with reference to figure 8, Fig. 8 is another schematic flow sheet of described data transmission method, and 620 can be specially:
When 6202, getting the instruction receiving data, control to turn off the emission amplifier 1023 on transmission channel, send the second transmitting-receiving to described transmit-receive switch 1022 and select control signal, select control signal that its input 1022a is connected the second output 1022c to make described transmit-receive switch 1022 according to described second transmitting-receiving;
Namely control to disconnect transmission channel, can specifically: control to turn off the emission amplifier 1023 on transmission channel;
Preferably, if receive path is provided with reception amplifier 1024 between receiving terminal 1012 and the second output 1022c of described transmit-receive switch 1022, the data then aerial array 11 received are successively after the input 1022a and the second output 1022c of transmit-receive switch 1022, first amplify through reception amplifier 1024, then send into WiFi level system 101 receiving terminal 1012, wherein, if on transmission channel transmitting terminal 1011 and described radio-frequency (RF) switch 1021 input 1021a between be provided with emission amplifier 1023, can control to turn off emission amplifier 1023, namely the sub-level system of WiFi 101 is only needed to select holding wire to select control signal to control signal port transmission second transmitting-receiving of described transmit-receive switch 1022 by transmitting-receiving, select control signal that its input 1022a is connected the second output 1022c to make described transmit-receive switch 1022 according to described second transmitting-receiving, and the sub-level system 101 of WiFi does not need the control signal port to radio-frequency (RF) switch 1021 to send second day line options control signal, owing to have turned off emission amplifier 1023, therefore can think which output the input 1021a of radio-frequency (RF) switch 1021 is connected to and does not affect data receiver.
Wherein, data transmission method as shown in Fig. 6, Fig. 7 and Fig. 8 can also be applied to the WLAN antenna system (as shown in Figure 5) comprising dual-frequency combining subsystem 12, between the WiFi intelligent antenna subsystem 10 that duplexer is connected to described two different frequent points and aerial array 11, can realize, by signal syntheses one tunnel of multiple frequency, reaching the object of common antenna; During transmitting data, the signal that the WiFi intelligent antenna subsystem 10 transmission channel output of two different frequent points exports respectively, can synthesize a road through duplexer by two paths of signals, be connected on the antenna in aerial array 11; When receiving data, the signal of eating dishes without rice or wine received is split into two-way by duplexer, then sends into the input of WiFi intelligent antenna subsystem 10 receive path of two different frequent points respectively.
Be understandable that, in the inventive method embodiment, the selection of radio-frequency (RF) switch line options control in 1021 days and transmit-receive switch 1022 controls with reference to the related content in aforementioned system embodiment, to repeat no more herein.
From the above, the data transmission method of what the embodiment of the present invention provided be applied to WLAN antenna system, radio-frequency (RF) switch is arranged between transmitting terminal and transmit-receive switch, the input of transmit-receive switch directly connects an antenna, second output directly connects receiving terminal, and transmit-receive switch and receiving terminal are without radio-frequency (RF) switch; And a road output of radio-frequency (RF) switch is connected with the first output of transmit-receive switch, all the other outputs are directly connected with antenna; Have employed the asymmetric hardware circuit of transmitting-receiving, namely transmission channel is by radio-frequency (RF) switch switched antenna, receive path fixed antenna, without the need to through radio-frequency (RF) switch; Can solve when receiving data, data cause Insertion Loss through radio-frequency (RF) switch, cause the problem of the reduction of the loss of upstream sensitivity and up covering performance; If this WLAN antenna system is the WLAN antenna system of double frequency shared antenna, then can connects duplexer and multiple signal syntheses one tunnel is connected to antenna again, the number of antenna can be saved, reach the object of common antenna.
Those skilled in the art can be well understood to, and for convenience and simplicity of description, the specific works process in the method step of foregoing description, with reference to the corresponding process in aforementioned system embodiment, can not repeat them here.
One of ordinary skill in the art will appreciate that: all or part of step realizing said method embodiment can have been come by the hardware that program command is relevant, aforesaid program can be stored in a computer read/write memory medium, comprising some instructions in order to make a computer equipment (can be personal computer, server, or the network equipment etc.) perform all or part of step of method described in each embodiment of the present invention.And aforesaid storage medium comprises: USB flash disk, portable hard drive, read-only memory (ROM, Read-OnlyMemory), random access memory (RAM, RandomAccessMemory), magnetic disc or CD etc. various can be program code stored medium.
Above a kind of WLAN antenna system provided by the present invention and data transmission method are described in detail, for one of ordinary skill in the art, according to the thought of the embodiment of the present invention, all will change in specific embodiments and applications, in sum, this description should not be construed as limitation of the present invention.
Claims (9)
1. a WLAN (wireless local area network) WLAN antenna system, is characterized in that, comprising:
Aerial array and at least one Wireless Fidelity WiFi intelligent antenna subsystem, described WiFi intelligent antenna subsystem comprises the sub-level system of WiFi, radio frequency and antenna chooser level system;
The sub-level system of described WiFi comprises transmitting terminal and receiving terminal, described radio frequency and antenna chooser level system comprise radio-frequency (RF) switch and transmit-receive switch, described radio-frequency (RF) switch comprises input and some roads output, and described transmit-receive switch comprises input, the first output and the second output;
Wherein, on transmission channel, described transmitting terminal is connected with the input of described radio-frequency (RF) switch, and a road output of described radio-frequency (RF) switch is connected with the first output of described transmit-receive switch, and all the other outputs of radio-frequency (RF) switch are connected with described aerial array;
On receive path, described receiving terminal is connected with the second output of described transmit-receive switch, and the input of described transmit-receive switch is connected with the antenna of in described aerial array.
2. system according to claim 1, is characterized in that,
Day line options control port and transmitting-receiving selection control port is also comprised in the sub-level system of described WiFi, antenna selection signals line connects the control signal port of described sky line options control port and described radio-frequency (RF) switch, and transmitting-receiving selects holding wire to connect the control signal port of described transmitting-receiving selection control port and described transmit-receive switch;
The sub-level system of described WiFi, selects control signal for the control signal port transmitting antenna by radio-frequency (RF) switch described in antenna selection signals alignment, according to described sky line options control signal, its input is connected corresponding output to make described radio-frequency (RF) switch;
The sub-level system of described WiFi, also for being selected holding wire to select control signal to the control signal port transmission transmitting-receiving of described transmit-receive switch by transmitting-receiving, select control signal that its input is connected the first output or the second output to make described transmit-receive switch according to described transmitting-receiving.
3. system according to claim 1, it is characterized in that, emission amplifier and reception amplifier is also comprised in described WLAN antenna system, described emission amplifier is connected between transmitting terminal and described radio-frequency (RF) switch input, and described reception amplifier is connected between receiving terminal and described transmit-receive switch second output.
4. the system according to any one of claims 1 to 3, is characterized in that, at least one WiFi intelligent antenna subsystem described is specially two WiFi intelligent antenna subsystems, comprises a WiFi intelligent antenna subsystem and the 2nd WiFi intelligent antenna subsystem;
Described WLAN antenna system also comprises dual-frequency combining subsystem, and described dual-frequency combining subsystem is connected between described two WiFi intelligent antenna subsystems and described aerial array.
5. system according to claim 4, is characterized in that, described dual-frequency combining subsystem comprises several duplexers, and each described duplexer comprises conjunction terminal and two-way branch end,
Wherein, one tunnel branch end of first duplexer connects the input of a WiFi intelligent antenna subsystem receive path or an output of a WiFi intelligent antenna subsystem transmission channel by transmit-receive switch, another road branch end connects the input of the 2nd WiFi intelligent antenna subsystem receive path or an output of the 2nd WiFi intelligent antenna subsystem transmission channel by transmit-receive switch, closes terminal and is connected with the first antenna in described aerial array;
And, one tunnel branch end of other each described duplexers except described first duplexer connects an output of a WiFi intelligent antenna subsystem transmission channel, another road branch end connects an output of the 2nd WiFi intelligent antenna subsystem transmission channel, closes terminal and is connected with the antenna of in described aerial array.
6. system according to claim 1, is characterized in that, described radio-frequency (RF) switch is single pole multiple throw or diode array;
Described transmit-receive switch is single-pole double-throw switch (SPDT) or diode array.
7. a data transmission method, is characterized in that, be applied to the WLAN (wireless local area network) WLAN antenna system as described in any one of claim 1 to 6, described method comprises:
When getting the instruction of transmitting data, send the first transmitting-receiving to transmit-receive switch and select control signal, select control signal that its input is connected the first output to make described transmit-receive switch according to described first transmitting-receiving, send first day line options control signal to radio-frequency (RF) switch, according to described first day line options control signal, its input is connected corresponding output to make described radio-frequency (RF) switch;
When getting the instruction receiving data, control to disconnect transmission channel, send the second transmitting-receiving to described transmit-receive switch and select control signal, select control signal that its input is connected the second output to make described transmit-receive switch according to described second transmitting-receiving.
8. method according to claim 7, is characterized in that, described control disconnects transmission channel and comprises:
Send second day line options control signal to described radio-frequency (RF) switch, according to described second day line options control signal, its input is connected its output be connected with the first output of transmit-receive switch to make described radio-frequency (RF) switch.
9. method according to claim 7, is characterized in that, described control disconnects transmission channel and comprises:
Control to turn off the emission amplifier on transmission channel.
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| CN101595651A (en) * | 2007-03-12 | 2009-12-02 | 英特尔公司 | Multi radio communication equipment and corresponding method |
| CN101772418A (en) * | 2007-08-03 | 2010-07-07 | 勃来迪环球股份有限公司 | The removable media spindle and the antenna module that are used for printer |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100729341B1 (en) * | 2006-06-29 | 2007-06-18 | 주식회사 알에프엔진 | Apparatus for selecting rf signalpath |
| US8224239B2 (en) * | 2006-07-21 | 2012-07-17 | Panasonic Corporation | Antenna selector and communication device |
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| CN1152220A (en) * | 1995-10-27 | 1997-06-18 | 松下电器产业株式会社 | Mobile station without transmission/reception duplexer |
| CN1761172A (en) * | 2004-10-14 | 2006-04-19 | 中兴通讯股份有限公司 | Method and device for treating emission diversity selected by antenna |
| CN101595651A (en) * | 2007-03-12 | 2009-12-02 | 英特尔公司 | Multi radio communication equipment and corresponding method |
| CN101772418A (en) * | 2007-08-03 | 2010-07-07 | 勃来迪环球股份有限公司 | The removable media spindle and the antenna module that are used for printer |
| CN101242213A (en) * | 2007-11-28 | 2008-08-13 | 中兴通讯股份有限公司 | A receiving/transmission selection switch and antenna selection switch device |
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