CN104682994A - Radio frequency chip and system for wireless local area network and broadcast integrated transmission - Google Patents
Radio frequency chip and system for wireless local area network and broadcast integrated transmission Download PDFInfo
- Publication number
- CN104682994A CN104682994A CN201510104422.8A CN201510104422A CN104682994A CN 104682994 A CN104682994 A CN 104682994A CN 201510104422 A CN201510104422 A CN 201510104422A CN 104682994 A CN104682994 A CN 104682994A
- Authority
- CN
- China
- Prior art keywords
- frequency
- radio
- broadcast
- end circuit
- local area
- 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.)
- Pending
Links
Landscapes
- Transceivers (AREA)
Abstract
The invention relates to a radio frequency chip for wireless local area network and broadcast integrated transmission. The radio frequency chip comprises a wireless local area network receiving link radio frequency front-end circuit, a U waveband receiving link radio frequency front-end circuit, a wireless local area network transmitting link radio frequency front-end circuit, a transmitting and receiving shared baseband filtering and variable gain amplification unit and a radio frequency phase-locked loop frequency integrated circuit, wherein the wireless local area network receiving link radio frequency front-end circuit is connected with the transmitting and receiving shared baseband filtering and variable gain amplification unit after being combined with the U waveband receiving link radio frequency front-end circuit; the wireless local area network transmitting link radio frequency front-end circuit is connected with the transmitting and receiving shared baseband filtering and variable gain amplification unit. The chip has a wireless network mode and a broadcast receiving mode. According to the wireless local area network and broadcast integrated transmission radio frequency chip, wireless network signal transmission and broadcast signal transmission are integrated, the working mode can be converted according to the use situations, and the advantages of various transmission modes can be fully utilized, so that the demands are met, and meanwhile, the contradiction among system performance, power consumption and cost is solved.
Description
Technical field
The present invention relates to communication chip design field, be specifically related to a kind of framework merging the radio frequency chip transmitted for realizing local area wireless network and broadcast, and adopt the system of this chip.
Background technology
Many wireless transmitting systems be many-one transmission, the node namely distributed by data summarization to Centroid.Wherein the feature of some system is that return data amount is very large, but allows transmission distortion once in a while, such as video monitoring system; The feature of some system is then that the data volume transmitted is little, but does not allow any transmission distortion, such as wireless microphone system, and some systems then to having above two kinds of requirements concurrently, such as need the video monitoring system etc. of node control.Also do not have a kind of Radio Transmission Technology can solve the system application problem having above two kinds of transmission features concurrently very well at present.
Key is a kind of wireless transmission mechanism of design, mainly contains the transmission system of two class different mechanisms at present, and a kind of is the system of communication type, and a kind of is the system of broadcast type.The system main feature of communication type is two-way, each node has transmission-receiving function, with certain frame format exchange message, information needs passback to confirm (ACK) after sending, the signal that really will transmit only accounts for a part for frame, therefore efficiency of transmission is lower but data that are transmission are undistorted, otherwise arrangement retransmits by system; The feature of broadcast system is unidirectional, and data are fixed by transmitting terminal to receiving terminal transmission, use stream mode transmission of information, only have a bit of frame head to add auxiliary reception information, all the other are actual signal, and therefore efficiency of transmission is high, but because ACK passback, receive and easily cause of short duration frame losing.For vision signal, the performance after frame losing is image degradation or the loss of moment, is generally acceptable, adopts broadcast type transmission to be than better suited; And for audio signal, the performance of frame losing is then cacophonia or the interruption of moment, due to the sensitiveness of people's ear, often can not be received, therefore adopt the transmission of wireless network to be than better suited.
Be suitable for current mainly WiFi (802.11b/g/n/ac) technology of system of big data quantity wireless transmission, it has the feature of communication system and is suitable for forming WLAN, and accessible the Internet.In current wireless interconnected application explosive growth, WiFi network is used widely.Be applied to the trial of related application system at present, run into problems: when node is far away, transmission quality is obviously deteriorated, throughput sharply declines and causes transmission bandwidth not enough; Node needs stronger transmitting power, or arranges more wireless router, thus counteracts the advantage that WiFi system brings.
Summary of the invention
The object of this invention is to provide one WiFi radio network technique and broadcast transmission to be merged, thus can meet efficiency of transmission requirement, the local area wireless network that also can meet transmission quality requirements merges with broadcast transmits radio frequency chip and system.
For achieving the above object, the technical solution used in the present invention is:
A kind of local area wireless network merges with broadcast transmits radio frequency chip, comprise the WLAN receiver radio-frequency (RF) front-end circuit that can receive wireless LAN signal, can the U wave band receiver radio-frequency (RF) front-end circuit of receiving broadcast signal, the WLAN transmitting chain radio-frequency (RF) front-end circuit of wireless LAN signal can be launched, for transmit-receive sharing baseband filtering and the variable gain amplifying unit of filtering and gain-adjusted, for providing the RF Phase-Lock Loop frequency synthesizer circuit of the local oscillation signal needed for described WLAN receiver radio-frequency (RF) front-end circuit and described WLAN transmitting chain radio-frequency (RF) front-end circuit,
After described WLAN receiver radio-frequency (RF) front-end circuit and described U wave band receiver radio-frequency (RF) front-end circuit close road, be connected with variable gain amplifying unit with described transmit-receive sharing baseband filtering, described WLAN transmitting chain radio-frequency (RF) front-end circuit is connected with variable gain amplifying unit with described transmit-receive sharing baseband filtering;
Described local area wireless network merges with broadcast to be transmitted radio frequency chip and has two kinds of mode of operations, is respectively wireless network mode and broadcast reception mode; Under described wireless network mode, described WLAN receiver radio-frequency (RF) front-end circuit and the work of described WLAN transmitting chain radio-frequency (RF) front-end circuit; Under described broadcast reception mode, described U wave band receiver radio-frequency (RF) front-end circuit work.
It also comprises electric power management circuit, provides biased biasing circuit and control circuit, calibration circuit.
Described WLAN receiver radio-frequency (RF) front-end circuit comprises at least one receiver, receiver described in every bar includes low noise amplifier, the first image-reject filter be connected with described low noise amplifier, the one-level down-conversion mixer be connected with the first described image-reject filter, the first intermediate frequency filtering be connected with described one-level down-conversion mixer and the first intermediate frequency variable gain amplifier, the secondary down-conversion mixer be connected with the first described intermediate frequency filtering and the first intermediate frequency variable gain amplifier, it is connected with variable gain amplifying unit with described transmit-receive sharing baseband filtering.
Described WLAN receiver radio-frequency (RF) front-end circuit comprises the receiver described in two, is respectively 2.4GHz receiver and 5GHz receiver.
Described WLAN transmitting chain radio-frequency (RF) front-end circuit comprises at least one transmitting chain, transmitting chain described in every bar includes the one-level up-conversion mixer be connected with variable gain amplifying unit with described transmit-receive sharing baseband filtering, the second intermediate frequency filtering be connected with described one-level up-conversion mixer and the second intermediate frequency variable gain amplifier, the secondary up-conversion mixer be connected with the second described intermediate frequency filtering and the second intermediate frequency variable gain amplifier, the second image-reject filter be connected with described secondary up-conversion mixer, the power amplifier be connected with the second described image-reject filter.
Described WLAN transmitting chain radio-frequency (RF) front-end circuit comprises the transmitting chain described in two, is respectively 2.4GHz transmitting chain and 5GHz transmitting chain.
Described U wave band receiver radio-frequency (RF) front-end circuit comprises the 3rd low noise amplifier, described the first intermediate frequency variable gain amplifier be connected with the 3rd described low noise amplifier, the described secondary down-conversion mixer that is connected with the first described intermediate frequency variable gain amplifier.
A kind of adopt above-mentioned local area wireless network with broadcast merge the system transmitting radio frequency chip, comprise described local area wireless network and broadcast to merge and transmit radio frequency chip, it is characterized in that: its local area wireless network also comprised described in control merges with broadcast the digital baseband and controller chip that transmit radio frequency chip transformation working pattern.
Described system is applied in audio/video monitor and control system.
Because technique scheme is used, the present invention compared with prior art has following advantages: wireless network signal transmission is transmitted with broadcast singal and merged mutually by the present invention, can according to service condition transformation working pattern, thus the advantage of various transmission means can be made full use of, not only meet the compatibility requirement of application system to two kinds of transmission modes, also solve the contradiction between performance and power consumption, cost simultaneously.
Accompanying drawing explanation
Accompanying drawing 1 is that local area wireless network of the present invention merges with broadcast the configuration diagram transmitting radio frequency chip.
To be local area wireless network of the present invention with broadcast merge accompanying drawing 2 transmits WLAN receiver radio-frequency (RF) front-end circuit and U wave band receiver radio-frequency (RF) front-end circuit in radio frequency chip and to be harmonious the circuit diagram of road part.
Accompanying drawing 3 is framework and the Key Circuit schematic diagram of trip intermediate frequency broadband frequency synthesizer.
Embodiment
Below in conjunction with embodiment shown in the drawings, the invention will be further described.
Embodiment one: a kind of local area wireless network merges with broadcast transmits radio frequency chip, comprising: (1) WLAN receiver radio-frequency (RF) front-end circuit; (2) U wave band receiver radio-frequency (RF) front-end circuit; (3) WLAN transmitting chain radio-frequency (RF) front-end circuit; (4) transmit-receive sharing baseband filtering and variable gain amplifying unit; (5) RF Phase-Lock Loop frequency synthesizer circuit, in addition, can also comprise electric power management circuit, provide biased biasing circuit and the custom circuit such as control circuit, calibration circuit module.
WLAN receiver radio-frequency (RF) front-end circuit is for receiving wireless LAN signal, this WLAN receiver radio-frequency (RF) front-end circuit comprises at least one road receiver, in the present embodiment, be provided with two-way receiver, be respectively 2.4GHz receiver and 5GHz receiver.And each receiver is made up of the low noise amplifier LNA be connected in series successively, the first image-reject filter Image Filter, one-level down-conversion mixer Down Mixer, the first intermediate frequency filtering and the first intermediate frequency variable gain amplifier VGA, secondary down-conversion mixer, the first intermediate frequency filtering and the first intermediate frequency variable gain amplifier VGA are connected with variable gain amplifying unit with transmit-receive sharing baseband filtering again.
U wave band receiver radio-frequency (RF) front-end circuit be used for receiving broadcast signal, it comprise be connected in series successively the 3rd low noise amplifier LNA, the first intermediate frequency filtering and the first intermediate frequency variable gain amplifier VGA, secondary down-conversion mixer Down Mixer.
After above-mentioned WLAN receiver radio-frequency (RF) front-end circuit and U wave band receiver radio-frequency (RF) front-end circuit close road by the circuit shown in Fig. 2, be connected with variable gain amplifying unit with transmit-receive sharing baseband filtering.
WLAN transmitting chain radio-frequency (RF) front-end circuit is for launching wireless LAN signal, and it comprises at least one transmitting chain, in the present embodiment, arranges two-way transmitting chain, is respectively 2.4GHz transmitting chain and 5GHz transmitting chain.Each transmitting chain include be connected in series successively one-level up-conversion mixer Up Mixer, the second intermediate frequency filtering and the second intermediate frequency variable gain amplifier VGA, secondary up-conversion mixer Up Mixer, the second image-reject filter Image Filter, power amplifier PA, wherein the input of one-level up-conversion mixer Up Mixer is connected with variable gain amplifying unit with transmit-receive sharing baseband filtering.
Transmit-receive sharing baseband filtering and variable gain amplifying unit are used for receiving baseband signal filtering and gain-adjusted, filtering channel external noise and harmonic wave spuious; Anti-aliasing filter is carried out to transmitting baseband signal, suppress transmit scattering and launch non-linear, improve and face degree of suppression, ensure launch mass requirement.
RF Phase-Lock Loop frequency synthesizer circuit is for providing the local oscillation signal needed for WLAN receiver radio-frequency (RF) front-end circuit and WLAN transmitting chain radio-frequency (RF) front-end circuit, and comprising local oscillator unit, it can export two kinds of frequencies simultaneously.
Above-mentioned local area wireless network merges with broadcast to be transmitted radio frequency chip and has two kinds of mode of operations, is respectively wireless network mode and broadcast reception mode.Under wireless network mode, WLAN receiver radio-frequency (RF) front-end circuit and the work of WLAN transmitting chain radio-frequency (RF) front-end circuit.Under broadcast reception mode, U wave band receiver radio-frequency (RF) front-end circuit works.
Above-mentioned local area wireless network and broadcast are merged and transmits radio frequency chip and can jointly form a local area wireless network with digital baseband and controller chip and broadcast and merge and propagate radio system, wherein, controller chip is used for control office's area wireless network and broadcasts to merge transmitting radio frequency chip transformation working pattern.
To be applied as example in audio/video monitor and control system, in order to reduce wiring cost and the Probe arrangement flexibility of monitor network, wireless transmission method is adopted to be the developing direction of supervisory control system.This wireless supervisory control system generally needs to arrange multiple monitoring probe, and its uninterrupted sampling image and audio signal are also unifiedly back to Surveillance center, Surveillance center also need regularly or irregularly monitoring probe is inquired about, the operation such as control.At monitoring probe from the larger situation of Surveillance center's distance, between probe, can networking adopt the mode wireless connections of relaying to reduce radio transmitted power requirement.The equal compatible WiFi wireless network concatenation ability of wireless transmission of each monitoring probe and broadcast signal reception ability, the data volume such as passback for audio frequency and video is large, reliability requirement is high but the transmission demand that requirement of real-time is not high, closely similar with the traffic performance of radio network, now node can switch to broadcast reception mode work; When the signal demand networking relaying transmitted or when needing monitoring probe to need to control, WLAN (wireless local area network) WiFi communication technology is then very applicable, and node can switch to WiFi work pattern.Therefore by above technology can construct one cover wide, build flexibly, cost is low, throughput is high wireless-transmission network, be very suitable for building a monitor network.
In above-mentioned application scenarios, when system needs to work in WiFi pattern, 2.4G or 5G receiving-transmitting chain will be configured to operating state, under the control of WiFi digital baseband supporting with it and protocol controller, carry out 2.4G or 5G, and receive or send out etc. handover operation; When system needs to work in broadcast reception mode, U wave band receiver will be configured to operating state, after producing analog baseband signal by single-conversion, signal level through analog filter and variable gain amplifier VGA regulates, and exports the IQ orthogonal demodulation signal being applicable to supporting digital base band processor.The bandwidth of baseband analog filter will switch according to residing mode of operation.Be 10M or 20M under WiFi pattern, then determine (broadcast signal format that is can use standard in monitoring application or nonstandard customization) according to adopted modulation system and parameter under broadcast mode.Under WiFi transceiver mode, high-frequency local oscillation is configured to 4/5 of antenna radio-frequency signal frequency, and intermediate frequency local oscillator frequency is 1/5 of radio frequency signal frequency; Under broadcast reception mode, high-frequency local oscillation is not used, and intermediate frequency local oscillator frequency is consistent with radio frequency signal frequency, and signal converts directly to base band frequency.As shown in Figure 1.
Carry out conjunction road by increasing U wave band low noise amplifier LNA unit and itself and 2.4G and 5G down-conversion being exported, namely add the path of broadcast reception.The conjunction road of 2.4G, 5G and U wave band radio-frequency front-end adopts electric current to export shared load mode, as shown in Figure 2.
The framework of trip intermediate frequency local oscillator unit as shown in Figure 3, use multiple voltage controlled oscillator, its covering frequence is designed in 2500 ~ 5000MHz scope, its output signal is through 1/2/6/8 frequency division, 1250 ~ 2500MHz can be produced, and the high-frequency local oscillation of the frequency range such as 2500 ~ 5000MHz covers, to being applied to 2.4G frequency range (2412 ~ 2484MHz), and 5G frequency range (5150 ~ 5350MHz, 5725 ~ 5825MHz) radiofrequency signal frequency range, for WiFi mode of operations such as 802.11a/b/g/n; Also can produce 313 ~ 1250MHz intermediate-frequency band, receive for U wave band standard broadcast signal, other below 200MHz frequency ranges cover and can be used for part V-band broadcast signal reception.Frequency planning table is as follows:
If the system applied (as supervisory control system), its broadcast singal does not use ready-made television broadcast device, or needs to adopt ISM band due to the factor of frequency control, and customization broadcast singal, then can adopt following frequency planning:
A kind of frequency planning above comparing, only supports ISM915M by broadcast mode work, ISM433M and part V-band, but in local oscillator unit, the design frequency scope of core voltage controlled oscillator reduces greatly, can be reduced to and adopt one or two local oscillator to complete.
Above-mentioned local area wireless network merges with broadcast transmits radio frequency chip and system for demand and prior art Problems existing, proposes new transmission mechanism.The mass data of not stopping collect and transmit is needed in system, little to distortion requirement, these data by carrying out with the data format of similar broadcast encoding and modulate, multiplexing, launch, be equivalent to the goodput that improve WiFi system, particularly node is comparatively far away, when signal is not good; WiFi network achieves the transmission of key signal simultaneously, and also as the link backup of broadcasting transmitting, by networking and relay function, the layout distance of the node of effectively expansion, reduces the transmitting power requirement of system, also reduce establishment and the maintenance cost of system.
The feature of its framework is:
A) be integrated with the radio-frequency receiving-transmitting chain of three different frequency ranges, namely can be used for the tuning reception that 802.11abgn standard WiFi WLAN (wireless local area network) also can be used for broadcasting format signal.The basis that WiFi receives incorporates broadcast reception chain circuit function only need simply to increase by a low noise amplifier LNA circuit unit.
B) merged the transceiver architecture of superhet and Direct Conversion, the system architecture conversion of zero intermediate frequency or Low Medium Frequency can have been realized by configuration.Make full use of the advantage of different framework, solve broadband transceiver frequency planning problem and the contradictory problems between performance and power consumption, when work and double conversion, there is no DC maladjustment and voltage controlled oscillator (VCO) traction problems.
C) adopt trip intermediate frequency local oscillator low frequency local oscillator to move with high-frequency local oscillation, IF-FRE is slided within the scope of certain frequency simultaneously, does not need the two independently local oscillator unit needed for traditional secondary conversion architecture.
D) wireless network and broadcast reception transmitting-receiving Analog Baseband share same filtering and amplify link.
When it works in wireless network mode, signal, through 2.4G or 5G link, obtains receiving baseband signal through twice down-conversion or baseband signal obtains 2.4G or 5G radio frequency transmissions respectively through twice up-conversion; When working in broadcast reception mode, signal, through UHF receiving port, directly obtains receiving baseband signal through a down-conversion.Feature is the transceiver architecture having merged superhet and Direct Conversion, can be realized the system architecture conversion of zero intermediate frequency or Low Medium Frequency by configuration.Make full use of the advantage of different framework, solve broadband transceiver frequency planning problem and the contradictory problems between performance and power consumption, when work and double conversion, there is no DC maladjustment and voltage controlled oscillator (VCO) traction problems.
In such scheme, trip intermediate frequency local oscillator can be adopted to coordinate the system architecture of two frequency conversion to realize the fusion of wireless network and broadcast reception mode of operation.High-frequency local oscillation and intermediate frequency local oscillator are produced by a frequency synthesizer phase-locked loop.Different from general double conversion system, the frequency ratio of high-frequency local oscillation and intermediate frequency local oscillator is fixed value in a particular mode, can 1 ~ 16 be got, commonly use is 2 or 4, feature is that low frequency local oscillator moves with high-frequency local oscillation, IF-FRE as traditional fixed value, but neither be slided within the scope of certain frequency simultaneously, is therefore " trip intermediate frequency " structure.Feature is the two independently local oscillator unit do not needed needed for traditional secondary conversion architecture.Local oscillator generation unit is the frequency synthesizer of trip intermediate frequency architectures.It provides two local oscillator output ports simultaneously, and high frequency port output frequency is 4 times of low frequency port.The frequency coverage of high frequency port is designed to 1880MHz ~ 4640MHz, corresponding low frequency port frequency range is 470MHz ~ 1160MHz, when working in 5100MHz ~ 5800MHz 5G WiFi frequency range, intermediate frequency range is 1020 ~ 1160MHz, when working in 2400MHz ~ 2500MHz 2.4G WiFi frequency range, intermediate frequency range is 1020 ~ 1160MHz, 480 ~ 232MHz, when working in 470 ~ 860MHz UHF broadcast band, Direct-conversion is to base band zero-frequency.
In addition, wireless network and broadcast reception are sent out same filtering shared and are amplified link, and by integrated electronic switch, analog baseband link input switches to low-converter in the receiving mode and exports, and switches to transmitting baseband signal input port in the transmission mode; Analog Baseband output switches to output port in the receiving mode, switches to upper frequency mixer input port in the transmission mode.
Above-described embodiment, only for technical conceive of the present invention and feature are described, its object is to person skilled in the art can be understood content of the present invention and implement according to this, can not limit the scope of the invention with this.All equivalences done according to Spirit Essence of the present invention change or modify, and all should be encompassed within protection scope of the present invention.
Claims (9)
1. a local area wireless network merges with broadcast and transmits radio frequency chip, it is characterized in that: it comprises the WLAN receiver radio-frequency (RF) front-end circuit that can receive wireless LAN signal, can the U wave band receiver radio-frequency (RF) front-end circuit of receiving broadcast signal, the WLAN transmitting chain radio-frequency (RF) front-end circuit of wireless LAN signal can be launched, for transmit-receive sharing baseband filtering and the variable gain amplifying unit of filtering and gain-adjusted, for providing the RF Phase-Lock Loop frequency synthesizer circuit of the local oscillation signal needed for described WLAN receiver radio-frequency (RF) front-end circuit and described WLAN transmitting chain radio-frequency (RF) front-end circuit,
After described WLAN receiver radio-frequency (RF) front-end circuit and described U wave band receiver radio-frequency (RF) front-end circuit close road, be connected with variable gain amplifying unit with described transmit-receive sharing baseband filtering, described WLAN transmitting chain radio-frequency (RF) front-end circuit is connected with variable gain amplifying unit with described transmit-receive sharing baseband filtering;
Described local area wireless network merges with broadcast to be transmitted radio frequency chip and has two kinds of mode of operations, is respectively wireless network mode and broadcast reception mode; Under described wireless network mode, described WLAN receiver radio-frequency (RF) front-end circuit and the work of described WLAN transmitting chain radio-frequency (RF) front-end circuit; Under described broadcast reception mode, described U wave band receiver radio-frequency (RF) front-end circuit work.
2. local area wireless network according to claim 1 merges transmit radio frequency chip with broadcast, it is characterized in that: it also comprises electric power management circuit, provides biased biasing circuit and control circuit, calibration circuit.
3. local area wireless network according to claim 1 merges transmit radio frequency chip with broadcast, it is characterized in that: described WLAN receiver radio-frequency (RF) front-end circuit comprises at least one receiver, receiver described in every bar includes low noise amplifier, the first image-reject filter be connected with described low noise amplifier, the one-level down-conversion mixer be connected with the first described image-reject filter, the first intermediate frequency filtering be connected with described one-level down-conversion mixer and the first intermediate frequency variable gain amplifier, the secondary down-conversion mixer be connected with the first described intermediate frequency filtering and the first intermediate frequency variable gain amplifier, it is connected with variable gain amplifying unit with described transmit-receive sharing baseband filtering.
4. local area wireless network according to claim 3 merges transmit radio frequency chip with broadcast, it is characterized in that: described WLAN receiver radio-frequency (RF) front-end circuit comprises the receiver described in two, is respectively 2.4GHz receiver and 5GHz receiver.
5. local area wireless network according to claim 1 merges transmit radio frequency chip with broadcast, it is characterized in that: described WLAN transmitting chain radio-frequency (RF) front-end circuit comprises at least one transmitting chain, transmitting chain described in every bar includes the one-level up-conversion mixer be connected with variable gain amplifying unit with described transmit-receive sharing baseband filtering, the second intermediate frequency filtering be connected with described one-level up-conversion mixer and the second intermediate frequency variable gain amplifier, the secondary up-conversion mixer be connected with the second described intermediate frequency filtering and the second intermediate frequency variable gain amplifier, the second image-reject filter be connected with described secondary up-conversion mixer, the power amplifier be connected with the second described image-reject filter.
6. local area wireless network according to claim 5 merges transmit radio frequency chip with broadcast, it is characterized in that: described WLAN transmitting chain radio-frequency (RF) front-end circuit comprises the transmitting chain described in two, is respectively 2.4GHz transmitting chain and 5GHz transmitting chain.
7. local area wireless network according to claim 3 merges transmit radio frequency chip with broadcast, it is characterized in that: described U wave band receiver radio-frequency (RF) front-end circuit comprises the 3rd low noise amplifier, the first intermediate frequency variable gain amplifier be connected with the 3rd described low noise amplifier, the secondary down-conversion mixer that is connected with the first described intermediate frequency variable gain amplifier.
8. one kind adopts the local area wireless network according to any one of claim 1-7 to merge with broadcast the system transmitting radio frequency chip, comprise described local area wireless network and broadcast to merge and transmit radio frequency chip, it is characterized in that: its local area wireless network also comprised described in control merges with broadcast the digital baseband and controller chip that transmit radio frequency chip transformation working pattern.
9. system according to claim 8, is characterized in that: described system is applied in audio/video monitor and control system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510104422.8A CN104682994A (en) | 2015-03-10 | 2015-03-10 | Radio frequency chip and system for wireless local area network and broadcast integrated transmission |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510104422.8A CN104682994A (en) | 2015-03-10 | 2015-03-10 | Radio frequency chip and system for wireless local area network and broadcast integrated transmission |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104682994A true CN104682994A (en) | 2015-06-03 |
Family
ID=53317645
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510104422.8A Pending CN104682994A (en) | 2015-03-10 | 2015-03-10 | Radio frequency chip and system for wireless local area network and broadcast integrated transmission |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104682994A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105099492A (en) * | 2015-07-28 | 2015-11-25 | 联想(北京)有限公司 | Electronic equipment and control method therefor |
| CN105933053A (en) * | 2016-04-19 | 2016-09-07 | 北京博瑞空间科技发展有限公司 | Unmanned aerial vehicle communication device and unmanned aerial vehicle |
| CN112565680A (en) * | 2020-11-09 | 2021-03-26 | 天擎集成电路股份有限公司 | Radio frequency/wireless network device with multi-workstation mode, image monitoring equipment and wireless communication system |
| CN113014299A (en) * | 2019-12-19 | 2021-06-22 | 北京新岸线移动通信技术有限公司 | Wireless relay device and implementation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060128428A1 (en) * | 2004-12-13 | 2006-06-15 | Rooyen Pieter Gert W V | Method and system for a mobile architecture that supports a cellular or wireless network and broadcast utilizing an integrated single chip cellular and broadcast silicon solution |
| CN101299616A (en) * | 2008-07-08 | 2008-11-05 | 北京天碁科技有限公司 | Radio frequency receiver as well as electronic apparatus containing the same |
| CN101316105A (en) * | 2008-06-11 | 2008-12-03 | 苏州中科半导体集成技术研发中心有限公司 | Multi-standard multi-module wireless transceiver |
-
2015
- 2015-03-10 CN CN201510104422.8A patent/CN104682994A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060128428A1 (en) * | 2004-12-13 | 2006-06-15 | Rooyen Pieter Gert W V | Method and system for a mobile architecture that supports a cellular or wireless network and broadcast utilizing an integrated single chip cellular and broadcast silicon solution |
| CN101316105A (en) * | 2008-06-11 | 2008-12-03 | 苏州中科半导体集成技术研发中心有限公司 | Multi-standard multi-module wireless transceiver |
| CN101299616A (en) * | 2008-07-08 | 2008-11-05 | 北京天碁科技有限公司 | Radio frequency receiver as well as electronic apparatus containing the same |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105099492A (en) * | 2015-07-28 | 2015-11-25 | 联想(北京)有限公司 | Electronic equipment and control method therefor |
| CN105933053A (en) * | 2016-04-19 | 2016-09-07 | 北京博瑞空间科技发展有限公司 | Unmanned aerial vehicle communication device and unmanned aerial vehicle |
| CN105933053B (en) * | 2016-04-19 | 2019-03-19 | 北京博瑞空间科技发展有限公司 | UAV Communication device and unmanned plane |
| CN113014299A (en) * | 2019-12-19 | 2021-06-22 | 北京新岸线移动通信技术有限公司 | Wireless relay device and implementation method thereof |
| CN113014299B (en) * | 2019-12-19 | 2023-11-17 | 北京新岸线移动通信技术有限公司 | Wireless relay device and implementation method thereof |
| CN112565680A (en) * | 2020-11-09 | 2021-03-26 | 天擎集成电路股份有限公司 | Radio frequency/wireless network device with multi-workstation mode, image monitoring equipment and wireless communication system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US8229347B2 (en) | Base transceiver stations and method of operating thereof | |
| JP4986314B2 (en) | Wireless communication transceiver | |
| US7890078B2 (en) | Dual band WLAN communication frequency synthesizer technique | |
| JP2004527965A (en) | Multi-band cellular service via CATV network | |
| JP2005039765A (en) | Multimode radio terminal and radio transmitting/receiving part | |
| JPH1141131A (en) | Radio communication device | |
| WO2003069792A1 (en) | Radio communication method and system for performing communication among a plurality of radio communication terminals | |
| CN104682994A (en) | Radio frequency chip and system for wireless local area network and broadcast integrated transmission | |
| CN108847866B (en) | Radio frequency front end adjacent channel interference suppression circuit and WLAN access equipment | |
| CN104333737A (en) | Near-distance 2-5 M bandwidth simulative wireless picture transmission system and signal processing method | |
| US7251461B2 (en) | Wireless communications system, wireless transmitter, and wireless receiver | |
| CN102882573A (en) | Multiple-input multiple-output signal transmission realization method, device and system | |
| US20140334635A1 (en) | 7GHz Professional Wireless Microphone System | |
| US6917803B2 (en) | Wireless communications equipment | |
| CN110149121B (en) | Adjustable ultra-wideband zero intermediate frequency transceiver radio frequency analog front end | |
| EP2830382B1 (en) | A method for wireless backhaul communication, a radio access unit and a central unit therefor | |
| US7778208B2 (en) | Wireless communication system for time division duplex | |
| EP2733976A1 (en) | System, device, and method for transmitting multi-input-multi-output signals | |
| CN112311420B (en) | Single-standard dual-mode communication data frame configuration method, transceiving equipment and communication system | |
| EP1207627B1 (en) | An efficient GS;/DSC/UMTS (UTRA/FDD) RF transceiver architecture | |
| CN114401521A (en) | Variable frequency communication transmission method and transmission system | |
| KR100260252B1 (en) | A rf transmittrer and receiver in lmcs | |
| JP2005198077A (en) | Radio communication equipment | |
| CN112770333A (en) | 5G NR wireless distributed frequency shift system and frequency shift method | |
| CN216356719U (en) | Transceiver, chip, system on chip and chip system for increasing 2.4GHz frequency band communication distance |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information |
Address after: Three, 215021 international science and Technology Park, 1355 Jinji Lake Avenue, Suzhou Industrial Park, Jiangsu Province, 9A Applicant after: Suzhou Granville Semiconductor Co. Ltd. Address before: 215021, 1355 international science and Technology Park, Jinji Lake Avenue, Suzhou Industrial Park, Jiangsu, 3 9A1-1 Applicant before: Core microelectronics technology (Suzhou) Co., Ltd. |
|
| COR | Change of bibliographic data | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150603 |