CN104749591A - Global navigation satellite system oriented multi-mode parallel radio-frequency receiver - Google Patents
Global navigation satellite system oriented multi-mode parallel radio-frequency receiver Download PDFInfo
- Publication number
- CN104749591A CN104749591A CN201510167445.3A CN201510167445A CN104749591A CN 104749591 A CN104749591 A CN 104749591A CN 201510167445 A CN201510167445 A CN 201510167445A CN 104749591 A CN104749591 A CN 104749591A
- Authority
- CN
- China
- Prior art keywords
- switch
- frequency
- signal
- output terminal
- mixer
- 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
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S19/00—Satellite radio beacon positioning systems; Determining position, velocity or attitude using signals transmitted by such systems
- G01S19/01—Satellite radio beacon positioning systems transmitting time-stamped messages, e.g. GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO
- G01S19/13—Receivers
- G01S19/33—Multimode operation in different systems which transmit time stamped messages, e.g. GPS/GLONASS
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S19/00—Satellite radio beacon positioning systems; Determining position, velocity or attitude using signals transmitted by such systems
- G01S19/01—Satellite radio beacon positioning systems transmitting time-stamped messages, e.g. GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO
- G01S19/13—Receivers
- G01S19/35—Constructional details or hardware or software details of the signal processing chain
Landscapes
- Engineering & Computer Science (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Signal Processing (AREA)
- Superheterodyne Receivers (AREA)
Abstract
The invention provides a global navigation satellite system oriented multi-mode parallel radio-frequency receiver which comprises two low-noise amplifiers, two orthogonal down-conversion frequency mixers, two switch interconnection modules, two analog intermediate-frequency channels, a local-frequency generating module and a sampling clock generating module. Compared with the traditional double-channel design, the receiver has the advantages that the two switch interconnection modules are added in the receiver, the low-noise amplifiers can be selectively connected according to different compatible modes, degree of freedom of the orthogonal down-conversion frequency mixers and the analog intermediate-frequency channels is increased, oversize and redundancy design of the receiver is avoided, difficulty and complex in design of the analog intermediate-frequency channels are greatly reduced, and area of a chip can be reduced.
Description
Technical field
The present invention relates to a kind of radio-frequency transmitter, specifically a kind of multimode parallel radio frequency receiver towards GPS (Global Position System).
Background technology
GPS (Global Position System) (GNSS) makes a general reference global satellite navigation system, mainly comprises four Iarge-scale system at present: the GPS (GPS) of the U.S., Muscovite GLONASS satellite navigation system (GLONASS), the galileo satellite navigation system (Galileo) of European Union and the Beidou II satellite navigation system (Compass) of China.GNSS round-the-clock, round-the-clock can provide high precision, highly reliable location, navigation and time service (PNT) service for all types of user in the world, be widely used in civilian with military every field, day by day become the technical support system that space time information obtains.
High spreadability, high precision and high reliability are the real-world objects that each navigational system is pursued, but only rely on single navigational system but to have significant limitation, especially under extreme geography and environmental baseline.Therefore the demand of reality changes the GNSS epoch of multisystem (GPS/GLONASS/Galileo/Compass) compatibility and co-existence by making navigation application into from the single navigational system epoch, especially along with Galileo and Beidou satellite navigation system stable development and build up, and the gradual perfection of compatible and interoperability between each navigational system.Multimode walks abreast and receives the inevitable development trend that GNSS radio-frequency transmitter has become future.The multimode reception that walks abreast is divided into two kinds, one is that multisystem is compatible, which increase observable number of satellite, drastically increase and find and the ability of isolated fault satellite, there is the ability of process from the signal of two or more satellite groups worked alone simultaneously, the high integrity grade of system, relative to the navigation application of triangular web, multisystem compatible receiver just means usable satellite quantity at double, improves the probability capturing satellite, decreases pull-in time.Another kind is that single system multifrequency point is compatible, and it can avoid navigation signal when passing ionosphere because of the signal interruption that the factors such as refraction, reflection, scattering cause, and ensures the reliability of pseudo-range measurements and carrier phase measurement, is applicable to high precision PNT demand.
So far, major part can all adopt structure as shown in Figure 1 by the multimode of simultaneously compatible multisystem and the single system multifrequency point GNSS radio-frequency transmitter that walks abreast, this structure is disclosed in 2012 " IEEE Transactions on Microwave Theory andTechniques " periodical vol.60, no.11, pp.3491-3501.This receiver comprises two RF front-end modules, two analog intermediate frequency passages, two frequency synthesizers and a sampling clock generation module.Wherein, RF front-end module comprises a low noise amplifier (LNA) and a quadrature frequency conversion frequency mixer (Qmixer), low noise amplifier receives the GNSS signal coming from antenna (not shown) through matched design (match circuit does not draw), send into quadrature frequency conversion frequency mixer after amplifying, quadrature frequency conversion frequency mixer comprises two down-conversion mixers, receive the orthogonal local oscillation signal of the GNSS signal after low noise amplifier amplifies and frequency synthesizer output respectively, the GNSS signal being positioned at rf frequency place is downconverted to IF-FRE place, and is converted to complex field by the process of signal by real number field, frequency synthesizer receives the reference clock signal exported from external crystal-controlled oscillation (not shown), and the local oscillation signal providing two-way orthogonal is to quadrature frequency conversion frequency mixer, analog intermediate frequency passage comprises complex bandpass filters (CBPF), programmable gain amplifier (PGA), analog to digital converter (ADC) and automatic gain control circuit (AGC), complex bandpass filters receives the intermediate frequency plural number GNSS signal that quadrature frequency conversion frequency mixer exports, filtering Image interference and out-of-band noise, and the intermediate frequency plural number GNSS signal after process is selected one road (I road or Q road) and exported programmable gain amplifier to, and be reduced to real number field by the process of signal by complex field, programmable gain amplifier receives the intermediate frequency GNSS signal from complex bandpass filters, analog to digital converter is exported to after carrying out amplification process to a certain degree, analog to digital converter receives the intermediate frequency GNSS signal from programmable gain amplifier, and simulating signal is converted to digital signal and exports base band demodulating module (not shown) to and carry out subsequent treatment.The amplitude position that automatic gain control circuit receives from analog to digital converter outputs signal, most high-amplitude position dutycycle according to analog to digital converter exports corresponding gain control code to programmable gain amplifier, and programmable gain amplifier produces according to the gain control code of input the constancy that corresponding gain maintains analog to digital converter input signal power; Sampling clock generation module receives the reference clock signal exported from external crystal-controlled oscillation (not shown) equally, and exports sampled clock signal to analog to digital converter and base band demodulating module.
This structure mainly by formed two independently GNSS signal receiving cable realize that the multimode of GNSS signal is parallel to be received.First RF front-end module, first analog intermediate frequency passage and first frequency synthesizer composition the one GNSS radio-frequency transmitter, by configuring the Input matching performance of the first radio-frequency front-end, the output local frequency of first frequency synthesizer, and first analog intermediate frequency passage intermediate frequency and bandwidth, the reception to any GNSS signal can be realized; In like manner, second RF front-end module, second analog intermediate frequency passage and second frequency synthesizer composition the 2nd GNSS radio-frequency transmitter, by configuring the Input matching performance of the second radio-frequency front-end, the output local frequency of second frequency synthesizer, and second analog intermediate frequency passage intermediate frequency and bandwidth, the reception to any GNSS signal can be realized equally.One GNSS radio-frequency transmitter and the 2nd GNSS radio-frequency transmitter work simultaneously, by different configurations, just can realize the parallel reception of any two GNSS signal, provide multimode to walk abreast receiving function.
The major defect that this structure exists is as follows:
1) there is larger design redundance, because GNSS signal adopts the mode of direct sequence spread spectrum modulation, therefore different GNSS signal can simultaneously same channel transfer, that is RF front-end module and analog intermediate frequency passage can be multiplexing to reduce power consumption when the GNSS signal that parallel reception is different, but this structure adopts two independently GNSS radio frequency reception channel, does not possess multiplexing possibility;
2) each the Signal reception passage in this multimode parallel radio frequency receiver structure needs to possess the ability processing any GNSS signal, due to its adopt two independently frequency synthesizer be respectively each passage local oscillation signal be provided, therefore the non-constant width of frequency synthesizer output area (output area is about 1.4GHz) in this structure, increases the design difficulty of frequency synthesizer;
3) analog intermediate frequency passage must have configurable IF-FRE and bandwidth to adapt to different GNSS signal, and therefore the design of complex bandpass filters must possess very high configurability, and design is complicated.
Summary of the invention
For existing multimode walk abreast GNSS radio-frequency transmitter exist deficiency, the object of this invention is to provide a kind of multimode parallel radio frequency receiver towards GPS (Global Position System), the function that this receiver can provide any two GNSS signal to walk abreast reception by configuration, possesses the ability of multisystem compatibility and single system multifrequency point compatibility, configurability is very high, and there is not design redundancy, and analog intermediate frequency passages intersect in above-mentioned receiver structure without the need to covering all GNSS signal bandwidth, reduce the design complexities of complex bandpass filters, in addition, the reference frequency output of required frequency synthesizer does not need too wide yet.
Technical scheme of the present invention is:
A kind of multimode walks abreast GNSS radio-frequency transmitter, comprises two low noise amplifiers, two quadrature frequency conversion frequency mixer, two switched fabric modules, two analog intermediate frequency passages, a local frequency generation module and a sampling clock generation module;
Described two low noise amplifiers are respectively the first low noise amplifier and the second low noise amplifier, and the output terminal of two low noise amplifiers connects two input ends of the first switched fabric module respectively;
Described two switched fabric modules are respectively the first switched fabric module and second switch interconnecting modules, described first switched fabric module comprises the first switch, second switch and the 3rd switch, wherein one end of the first switch and one end of second switch are connected the output terminal of the first low noise amplifier and the second low noise amplifier respectively as the input of the first switched fabric module, the first switch and the other end of second switch be connected respectively the 3rd switch two ends and as the output terminal of the first switched fabric module;
Described two quadrature frequency conversion frequency mixer are respectively the first quadrature frequency conversion frequency mixer and the second quadrature frequency conversion frequency mixer, wherein an input end of the first quadrature frequency conversion frequency mixer connects the output terminal of the first switch in the first switched fabric module, another input end is orthogonal local oscillation signal input end, an input end of the second quadrature frequency conversion frequency mixer connects the output terminal of second switch in the first switched fabric module, another input end is orthogonal local oscillation signal input end, 3rd end of the first quadrature frequency conversion frequency mixer and the 3rd end of the second quadrature frequency conversion frequency mixer are respectively as its orthogonal output terminal,
Described local oscillation signal generation module comprises two frequency synthesizers, two polyphase filters, a up-conversion single sideband mixer, five two-dividers, and eight switches; Wherein the output terminal of first frequency synthesizer connects one end of the Ith switch and the IIth switch respectively, the other end of the Ith switch is by the first two-divider output orthogonal local oscillation signal to the first quadrature frequency conversion frequency mixer, the output terminal of second frequency synthesizer connects one end of the IIIth switch and the IVth switch respectively, and the other end of the IIIth switch is by the second two-divider output orthogonal local oscillation signal to the second quadrature frequency conversion frequency mixer; The other end of the IIth switch and the other end of the IVth switch are connected to node a, and pass through the input end of the 3rd two-divider output orthogonal signal to up-conversion single sideband mixer; One end of Vth switch and one end of the VIth switch are connected to node a equally, and the other end is then connected to one end of two polyphase filters, and the other end of two polyphase filters connects another input end of up-conversion single sideband mixer respectively; The output terminal of up-conversion single sideband mixer exports node b to by the 4th two-divider, one end of VIIth switch and one end of the VIIIth switch are connected to node b, the other end of the VIIth switch is by the 5th two-divider output orthogonal local oscillation signal to the first quadrature frequency conversion frequency mixer, and the other end of the VIIIth switch is equally as orthogonal local oscillation signal output terminal to the second quadrature frequency conversion frequency mixer.
Described second switch interconnecting modules comprises four Switch Controller, and wherein the two ends of the first Switch Controller and the right two ends of second switch are respectively as the first input end of second switch interconnect module, the first output terminal, the second input end, the second output terminal.The two ends of the 3rd Switch Controller connect first input end and second output terminal of second switch interconnecting modules respectively, and the two ends of the 4th Switch Controller connect the second input end and first output terminal of second switch interconnecting modules respectively.The first input end of second switch interconnecting modules connects the orthogonal output terminal of the first quadrature frequency conversion frequency mixer, and the second input end of second switch interconnect module connects the orthogonal output terminal of the second quadrature frequency conversion frequency mixer.
Described analog intermediate frequency passage comprises the first analog intermediate frequency passage and the second analog intermediate frequency passage, and the end of the input of described first analog intermediate frequency passage and the second analog intermediate frequency passage connects the first output terminal and second output terminal of second switch interconnecting modules respectively;
Described sampling clock generation module adopts the phase-locked loop based on ring oscillator to realize, and sampled clock signal exports analog to digital converter in the first analog intermediate frequency passage and the second analog intermediate frequency passage and follow-up digital demodulation blocks respectively to.
Further, in the present invention:
Described first low noise amplifier is used for receiving the GNSS signal at 1.6GHz frequency band place by outside matching network, and the second low noise amplifier is used for receiving the GNSS signal at 1.2GHz frequency band place by outside matching network.
Described first analog intermediate frequency passage and the second analog intermediate frequency passage include the complex bandpass filters be linked in sequence, and programmable gain amplifier, analog to digital converter and one are used for carrying out programmable gain amplifier the automatic gain control circuit of gain-adjusted.
In described first switched fabric module and second switch interconnecting modules, the control signal of internal switch is all controlled by interface circuit, and control signal is from digital demodulation blocks.
Described first analog intermediate frequency passage and the second analog intermediate frequency passage all have fixing IF-FRE, and the first intermediate frequency analog channel is used for receiving arrowband GNSS signal, and the second analog intermediate frequency passage is used for receiving broadband analogue intermediate-freuqncy signal.
Wherein two low noise amplifiers receive from antenna GNSS radiofrequency signal respectively through matched design multisystem GNSS multimode that is compatible or single system multifrequency point compatibility is parallel to be received to realize, the first switched fabric module is exported to after amplifying, first switch interconnect module receives the GNSS signal after low noise amplifier amplifies, the compatibility mode different according to receiver is selectively exported to corresponding quadrature frequency conversion frequency mixer, two quadrature frequency conversion frequency mixer receive the orthogonal local oscillation signal that GNSS signal and local frequency generation module from the first switched fabric module export respectively, the GNSS signal being positioned at rf frequency place is downconverted to IF-FRE place, and be converted to complex field by the process of signal by real number field, local frequency generation module receive from external crystal-controlled oscillation export reference clock signal, and local oscillation signal respectively to two providing two-way orthogonal a quadrature frequency conversion frequency mixer, second switch interconnecting modules receives the GNSS intermediate-freuqncy signal exported from two quadrature frequency conversion frequency mixer, and the compatibility mode different according to receiver exports it to corresponding analog intermediate frequency module respectively, analog intermediate frequency module carries out the filtering of image signal and out-of-band noise to the GNSS intermediate-freuqncy signal received, and be reduced to real number field by the process of signal by complex field, be converted into digital signal after carrying out amplification to a certain degree, and export base band demodulating module to and process.Sampling clock generation module receives the reference clock signal exported from external crystal-controlled oscillation equally, and exports sampled clock signal to analog to digital converter and base band demodulating module.
The invention has the beneficial effects as follows:
1) multiple different connected mode can be provided for its front stage circuit adding of switched fabric module, avoid the design redundancy of receiver, greatly saving the power consumption of receiver when providing multiple compatibility mode.
2) avoid employing two independently frequency synthesizer directly for receiver provides local oscillation signal, but to compress by introducing the output area of up-conversion single sideband mixer to frequency synthesizer.
3) design complexities of analog intermediate frequency passage obtains and simplifies greatly, and the multimode that each analog intermediate frequency passage only needs cover part GNSS signal bandwidth can meet any two GNSS signal of this receiver walks abreast receiving function.
In order to further understand feature of the present invention and technology contents, refer to following detailed description for the present invention, accompanying drawing and subordinate list, but institute's accompanying drawing only provides reference and explanation, is not used for being limited the present invention.
Accompanying drawing explanation
The multimode of the existing compatible multisystem of Fig. 1 graphic extension and single system multifrequency point walks abreast the circuit structure schematic diagram of GNSS radio-frequency transmitter;
The multimode of the compatible multisystem of Fig. 2 graphic extension the present invention and single system multifrequency point walks abreast the circuit structure schematic diagram of GNSS radio-frequency transmitter;
The circuit structure schematic diagram of Fig. 3 graphic extension local oscillation signal generation module;
Fig. 4 graphic extension multimode of the present invention walks abreast the first embodiment of the compatible different frequency bands GNSS signal of GNSS radio-frequency transmitter;
Fig. 5 graphic extension multimode of the present invention walks abreast the second embodiment of the compatible different frequency bands GNSS signal of GNSS radio-frequency transmitter;
Fig. 6 graphic extension multimode of the present invention walks abreast the 3rd embodiment of the compatible different frequency bands GNSS signal of GNSS radio-frequency transmitter;
An embodiment of the compatible different frequency bands GNSS signal of local oscillation signal generation module in Fig. 7 graphic extension the present invention;
Fig. 8 graphic extension multimode of the present invention walks abreast the first embodiment of GNSS radio-frequency transmitter compatible 1.6GHz frequency band GNSS signal;
Fig. 9 graphic extension multimode of the present invention walks abreast the second embodiment of GNSS radio-frequency transmitter compatible 1.6GHz frequency band GNSS signal;
An embodiment of local oscillation signal generation module compatible 1.6GHz frequency band GNSS signal in Figure 10 graphic extension the present invention;
Figure 11 graphic extension multimode of the present invention walks abreast the first embodiment of GNSS radio-frequency transmitter compatible 1.2GHz frequency band GNSS signal;
Figure 12 graphic extension multimode of the present invention walks abreast the second embodiment of GNSS radio-frequency transmitter compatible 1.2GHz frequency band GNSS signal;
An embodiment of local oscillation signal generation module compatible 1.2GHz frequency band GNSS signal in Figure 13 graphic extension the present invention.
In figure:
101. first low noise amplifiers, 102. first quadrature frequency conversion frequency mixer, 201. second low noise amplifiers, 202. second quadrature frequency conversion frequency mixer, the 30, first analog intermediate frequency passage; 301. first complex bandpass filters, 302. first programmable gain amplifiers, the 303, first analog to digital converter, the 304, first automatic gain control circuit, the 40, second analog intermediate frequency passage; 401, the second complex bandpass filters, the 402, second programmable gain amplifier, the 403, second analog to digital converter, the 404, second automatic gain control circuit; 50, the first switch interconnect module; 501, the first switch; 502, second switch; 503, the 3rd switch; 60, second switch interconnect module; 601, the first Switch Controller; 602, second switch pair; 603, the 3rd Switch Controller; 604, the 4th Switch Controller; 70, local frequency generation module; 701, first frequency synthesizer; 702, second frequency synthesizer; 711, the Ith switch; 712, the IIth switch; 713, the IIIth switch; 714, the IVth switch; 715, the Vth switch; 716, the VIth switch; 717, the VIIth switch; 718, the VIIIth switch; 721, the first two-divider; 722, the second two-divider; 723, the 3rd two-divider; 724, the 4th two-divider; 725, the 5th two-divider; 731, up-conversion single sideband mixer; 741, the first polyphase filters; 742, the second polyphase filters; 80, sampling clock generation module.
Embodiment
The frequency spectrum of the GNSS signal that the present invention supports is as follows:
The GNSS frequency spectrum that table 1 the present invention supports
From in upper table, GNSS signal is mainly distributed in two frequency band place: 1.6GHz and 1.2GHz, and central frequency distribution lower a few MHz or tens of MHz on two bands of each GNSS signal, bandwidth can contain by 4 values: 2/4/8/20MHz.Object of the present invention provides a kind of multimode to walk abreast GNSS radio-frequency transmitter, can by any two in the above-mentioned GNSS signal of configuration parallel processing, and don't there is larger design redundancy, and analog intermediate frequency channels designs is simple, the output area of frequency synthesizer can not be too wide.
Please refer to Fig. 2, it is depicted as multimode of the present invention and walks abreast the circuit structure schematic diagram of GNSS radio-frequency transmitter.This receiver comprises two low noise amplifiers (LNA) i.e. the first low noise amplifier 101 and the second low noise amplifier 201, two quadrature frequency conversion frequency mixer (Qmixer) i.e. the first quadrature frequency conversion frequency mixer 102 and the second quadrature frequency conversion frequency mixer 202, i.e. the first switched fabric module 50 and the second switch interconnecting modules 60 of two switched fabric modules, two analog intermediate frequency passages i.e. the first analog intermediate frequency module 30 and the second analog intermediate frequency module 40, local frequency generation module 70 and a sampling clock generation module 80.
The GNSS radiofrequency signal that wherein the first low noise amplifier 101 and the second low noise amplifier 201 receive from antenna (not shown) respectively through matched design (match circuit does not draw) receives so that the GNSS multimode realizing multisystem compatibility or single system multifrequency point compatibility is parallel, the first switched fabric module 50 is exported to after amplifying, first switch interconnect module 50 receives the GNSS signal after two low noise amplifiers amplify, the compatibility mode different according to receiver is selectively exported to corresponding quadrature frequency conversion frequency mixer, two quadrature frequency conversion frequency mixer receive the orthogonal local oscillation signal that GNSS signal and local frequency generation module 70 from the first switched fabric module export respectively, the GNSS signal being positioned at rf frequency place is downconverted to IF-FRE place, and be converted to complex field by the process of signal by real number field, local frequency generation module 70 receive from external crystal-controlled oscillation (not shown) export reference clock signal, and local oscillation signal respectively to two providing two-way orthogonal a quadrature frequency conversion frequency mixer, second switch interconnecting modules 60 receives the GNSS intermediate-freuqncy signal exported from two quadrature frequency conversion frequency mixer, and the compatibility mode different according to receiver exports it to corresponding analog intermediate frequency module respectively, two analog intermediate frequency modules carry out the filtering of image signal and out-of-band noise to the GNSS intermediate-freuqncy signal received, and be reduced to real number field by the process of signal by complex field, be converted into digital signal after carrying out amplification to a certain degree, and export follow-up base band demodulating module (not shown) to and process.Sampling clock produces mould 80 pieces and receives the reference clock signal exported from external crystal-controlled oscillation (not shown) equally, and exports sampled clock signal to analog to digital converter 303 and 403 and follow-up base band demodulating module (not shown).
Described low noise amplifier comprises the first low noise amplifier 101 and the second low noise amplifier 201, wherein the first low noise amplifier 101 is used for receiving the GNSS signal at 1.6GHz frequency band place by outside matching network (not shown), and the second low noise amplifier 201 is used for receiving the GNSS signal at 1.2GHz frequency band place by outside matching network (not shown).
Described first switched fabric module 50 comprises three switches, wherein one end of the first switch 501 and one end of second switch 502 are connected the output terminal of the first low noise amplifier 101 and the second low noise amplifier 201 respectively as the input of the first switched fabric module 50, the first switch 501 and the other end of second switch 502 be connected respectively the 3rd switch 503 two ends and as the output terminal of the first switched fabric module.
Described quadrature frequency conversion frequency mixer comprises the first quadrature frequency conversion frequency mixer 102 and the second quadrature frequency conversion frequency mixer 202, wherein an input end of the first quadrature frequency conversion frequency mixer 102 connects the output terminal of the first switch 501 in the first switched fabric module 50, another input end is orthogonal local oscillation signal input end, an input end of the second quadrature frequency conversion frequency mixer 202 connects the output terminal of second switch 502 in the first switched fabric module 50, another input end is orthogonal local oscillation signal input end, 3rd end of the first quadrature frequency conversion frequency mixer 102 and the 3rd end of the second quadrature frequency conversion frequency mixer 202 are respectively as its orthogonal output terminal.
Described local oscillation signal generation module 70 comprises two frequency synthesizers (FS), two polyphase filters (PPF), a up-conversion single sideband mixer (SSBmixer), five two-dividers (/ 2), and eight switches.As shown in Figure 3, wherein the output terminal of first frequency synthesizer 701 connects one end of the Ith switch 711 and the IIth switch 712 respectively, the other end of the Ith switch 711 is by the first two-divider 721 output orthogonal local oscillation signal to the first quadrature frequency conversion frequency mixer 102, the output terminal of second frequency synthesizer 702 connects one end of the IIIth switch 713 and the IVth switch 714 respectively, and the other end of the IIIth switch 713 is by the second two-divider 722 output orthogonal local oscillation signal to the second quadrature frequency conversion frequency mixer 202; The other end of the IIth switch 712 and the other end of the IVth switch 714 are connected to node a, and pass through the input end of the 3rd two-divider 723 output orthogonal signal to up-conversion single sideband mixer 731; One end of Vth switch 715 and one end of the VIth switch 716 are connected to node a equally, the other end is then connected to one end of two polyphase filters 741 and 742, and the first polyphase filters 741 is connected another input end of up-conversion single sideband mixer 731 respectively with the other end of 7 second polyphase filters 742; The output terminal of up-conversion single sideband mixer 731 exports node b to by the 4th two-divider 724, one end of VIIth switch 717 and one end of the VIIIth switch 718 are connected to node b, the other end of the VIIth switch 717 passes through the other end of the 5th two-divider 725 output orthogonal local oscillation signal to the first quadrature frequency conversion frequency mixer the 102, VIII switch 718 equally as orthogonal local oscillation signal output terminal to the second quadrature frequency conversion frequency mixer 202.
Described second switch interconnecting modules 60 comprises four Switch Controller, wherein the two ends of the first Switch Controller 601 and second switch to 602 two ends respectively as the first input end of second switch interconnect module, the first output terminal, the second input end, the second output terminal.The two ends of the 3rd Switch Controller 603 connect first input end and second output terminal of second switch interconnecting modules 60 respectively, and the two ends of the 4th Switch Controller 604 connect the second input end and first output terminal of second switch interconnecting modules 60 respectively.The first input end of second switch interconnecting modules 60 connects the orthogonal output terminal of the first quadrature frequency conversion frequency mixer 102, and the second input end of second switch interconnect module 60 connects the orthogonal output terminal of the second quadrature frequency conversion frequency mixer 202.
Described analog intermediate frequency passage comprises the first analog intermediate frequency passage 30 and the second analog intermediate frequency passage 40, each analog intermediate frequency passage includes the complex bandpass filters 301 and 401 be linked in sequence, programmable gain amplifier 302 and 402 and analog to digital converter 303 and 403, also comprise the automatic gain control circuit 304 and 404 that is used for carrying out programmable gain amplifier 302 and 402 gain-adjusted simultaneously.
Described sampling clock generation module 80 adopts the phase-locked loop based on ring oscillator to realize, and sampled clock signal exports analog to digital converter 303 and 403 in the first analog intermediate frequency passage 30 and the second analog intermediate frequency passage 40 and follow-up base band demodulating module (not shown) respectively to.
In described first switched fabric module 50 and second switch interconnecting modules 60, the control signal of internal switch is all controlled by interface circuit, and control signal is from base band demodulating module (not shown).
Described first analog intermediate frequency passage 30 and the second analog intermediate frequency passage 40 all have fixing IF-FRE, and the first intermediate frequency analog channel 30 is used for receiving arrowband GNSS signal, and the second analog intermediate frequency passage 40 is used for receiving broadband analogue intermediate-freuqncy signal.
Multimode in the present invention GNSS radio-frequency transmitter that walks abreast devises two low noise amplifiers with Different matching network to receive two band signals of GNSS, in addition, two independently analog intermediate frequency passage be used to the GNSS signal after processing corresponding down coversion, the centre frequency of two analog intermediate frequency passages is set to fixed value respectively.Intersect at traditional binary channels design, this receiver adds two switch interconnect modules, low noise amplifier can be made optionally to access according to different compatibility modes on the one hand, add quadrature frequency conversion frequency mixer and the channel attached degree of freedom of analog intermediate frequency on the other hand, receiver is avoided to occur excessive design redundancy, greatly can also reduce design difficulty and the complexity of analog intermediate frequency passage simultaneously, and the area of chip can be reduced.The traditional channel structure design adopted, if want the parallel reception realizing any two GNSS signal, each analog intermediate frequency passage must possess the function that can provide unlike signal bandwidth (2/4/8/20MHz), if insertion switch interconnecting modules, the channel bandwidth that two analog intermediate frequency passages provide can be designed to 2/4MHz respectively and (be mainly used to process arrowband GNSS signal, such as GPS-L1/L2, Galileo-E1, BD-B1) and 8/20MHz (be mainly used to process broadband GNSS signal, such as GPS-L5, GLONASS-L1/L2, Galileo-E5a (b), BD-B2/B3).The theory support of this structure is adopted to be: different GNSS signal has different direct sequence spread spectrum codes, can be received by identical radio frequency analog passage, and in base band demodulating module, adopt different passages to be separated through relevant treatment.Meanwhile, for the parallel reception of the GNSS signal of same frequency band, only need to access a low noise amplifier by switched fabric module, intersect at traditional binary channels design, save power consumption.
For employing two independently frequency synthesizer provide for orthogonal local oscillation signal, in order to support the multiple-working mode of multimode parallel receiver, each frequency synthesizer must cover GNSS frequencies all in table 1, and therefore each frequency synthesizer frequency range that will cover is up to 1.4GHz.This is very challenging to the design of voltage controlled oscillator, is be difficult to realize (larger ghost effect have impact on the expansion of voltage controlled oscillator output frequency) by means of only an inductor-capacitor network.In order to reduce the reference frequency output of voltage controlled oscillator, we adopt following two kinds of methods:
Direct frequency generates: the output of voltage controlled oscillator is directly produced orthogonal local oscillation signal by two divided-frequency;
Indirect frequency generates: by the output of voltage controlled oscillator by single sideband mixer up-conversion, and then produces orthogonal local oscillation signal through frequency division.
Each frequency synthesizer produces two frequency bands of GNSS signal by above-mentioned two kinds of methods, and by the different mode of operation of corresponding switchgear distribution.Up-conversion single sideband mixer provides the upconversion function of 1.5 times, and can be multiplexing by two frequency synthesizers.Adopt direct and indirect frequency generation method, greatly can reduce the reference frequency output needed for each frequency synthesizer, the reference frequency output of two frequency synthesizers drops to 400MHz (3-3.4GHz) and 700MHz (1.9-2.6GHz) respectively, greatly reduces the design difficulty of voltage controlled oscillator.
In order to be described in more details the present invention, now the reception of two GNSS signal any in his-and-hers watches 1 be divided into following three types, and provide specific embodiment.
1, the parallel reception of different frequency bands GNSS signal
If the GNSS signal bandwidth difference comparatively large (namely is positioned at arrowband, and is positioned at broadband) of different frequency bands, such as Compass-B1 and Compass-B2.Fig. 4 gives the parallel embodiment receiving the receiver of Compass-B1 and Compass-B2, according to Fig. 2, can by opening the 3rd switch 503 in the first switch interconnect module 50, the first switch 501 in closed first switch interconnect module 50 and second switch 502; Open the 3rd Switch Controller 603 and the 4th Switch Controller 604 of second switch interconnecting modules 60 kinds, the first Switch Controller 601 in closed second switch interconnecting modules 60 and second switch are to 602; Setting the first analog intermediate frequency passage 30 and the IF-FRE of the second analog intermediate frequency passage 40 is a fixed value (can identical also can be different), the bandwidth setting the first analog intermediate frequency passage 30 is 4MHz, the bandwidth setting the second analog intermediate frequency passage 40 is 20MHz, realizes the parallel reception of GNSS signal Compass-B1 and Compass-B2.
Such as, if the GNSS signal bandwidth of different frequency bands is all arrowband, GPS-L1 and GPS-L2.Fig. 5 gives the parallel embodiment receiving the receiver of GPS-L1 and GPS-L2, according to Fig. 2, can by opening the 3rd switch 503 in the first switch interconnect module 50, and the first switch 501 in closed first switch interconnect module 50 and second switch 502; The second switch opening second switch interconnecting modules 60 kinds to 602 and the 3rd Switch Controller 603, the first Switch Controller 601 in closed second switch interconnecting modules 60 and the 4th Switch Controller 604; The IF-FRE setting the first analog intermediate frequency passage 30 is a fixed value, and the bandwidth setting the first analog intermediate frequency passage 30 is 2MHz, realizes the parallel reception of GNSS signal GPS-L1 and GPS-L2.
Such as, if the GNSS signal bandwidth of different frequency bands is all broadband, GLONASS-L1 and GLONASS-L2.Fig. 6 gives the parallel embodiment receiving the receiver of GLONASS-L1 and GLONASS-L2, according to Fig. 2, can by opening the 3rd switch 503 in the first switch interconnect module 50, the first switch 501 in closed first switch interconnect module 50 and second switch 502; Open the first Switch Controller 601 in second switch interconnecting modules 60 and the 4th Switch Controller 604, the second switch that closed second switch interconnecting modules is 60 kinds is to 602 and the 3rd Switch Controller 603; The IF-FRE setting the second analog intermediate frequency passage 40 is a fixed value, and the bandwidth setting the second analog intermediate frequency passage 40 is 8MHz, realizes the parallel reception of GNSS signal GLONASS-L1 and GLONASS-L2.
Fig. 7 gives and to walk abreast the embodiment of local oscillation signal generation module 70 under receiving for different frequency bands GNSS signal, first frequency synthesizer 701 in local oscillation signal generation module 70 provides the orthogonal local oscillation signal at 1.6GHz frequency band place by two divided-frequency, second frequency synthesizer 702 provides the orthogonal local oscillation signal at 1.2GHz frequency band place by two divided-frequency.
2, the parallel reception of 1.6GHz frequency band place GNSS signal
If the GNSS signal bandwidth difference comparatively large (namely is positioned at arrowband, and is positioned at broadband) at 1.6GHz frequency band place, such as GPS-L1 and GLONASS-L1.Fig. 8 gives the parallel embodiment receiving the receiver of GPS-L1 and GLONASS-L1, according to Fig. 2, can by opening the second switch 502 in the first switch interconnect module 50, the first switch 501 in closed first switch interconnect module 50 and the 3rd switch 503; Open the 3rd Switch Controller 603 and the 4th Switch Controller 604 of second switch interconnecting modules 60 kinds, the first Switch Controller 601 in closed second switch interconnecting modules 60 and second switch are to 602; Setting the first analog intermediate frequency passage 30 and the IF-FRE of the second analog intermediate frequency passage 40 is a fixed value (can identical also can be different), the bandwidth setting the first analog intermediate frequency passage 30 is 2MHz, the bandwidth setting the second analog intermediate frequency passage 40 is 8MHz, realizes the parallel reception of GNSS signal GPS-L1 and GLONASS-L1.
Such as, if the GNSS signal bandwidth at 1.6GHz frequency band place is all arrowband, GPS-L1 and Compass-B1.Fig. 9 gives the parallel embodiment receiving the receiver of GPS-L1 and Compass-B1, according to Fig. 2, can by opening the second switch 502 in the first switch interconnect module 50, the first switch 501 in closed first switch interconnect module 50 and the 3rd switch 503; The second switch opening second switch interconnecting modules 60 kinds to 602 and the 3rd Switch Controller 603, the first Switch Controller 601 in closed second switch interconnecting modules 60 and the 4th Switch Controller 604; The IF-FRE setting the first analog intermediate frequency passage 30 is a fixed value, and the bandwidth setting the first analog intermediate frequency passage 30 is 4MHz, realizes the parallel reception of GNSS signal GPS-L1 and Compass-B1.
Figure 10 gives and to walk abreast the embodiment of local oscillation signal generation module 70 under receiving for 1.6GHz frequency band place GNSS signal, first frequency synthesizer 701 in local oscillation signal generation module 70 provides the orthogonal local oscillation signal at 1.6GHz frequency band place by two divided-frequency, second frequency synthesizer 702 is by carrying out the orthogonal local oscillation signal that two divided-frequency provides 1.6GHz frequency band place again after up-conversion single sideband mixing.
3, the parallel reception of 1.2GHz frequency band place GNSS signal
If the GNSS signal bandwidth difference comparatively large (namely is positioned at arrowband, and is positioned at broadband) at 1.2GHz frequency band place, such as GPS-L2 and Compass-B2.Figure 11 gives the parallel embodiment receiving the receiver of GPS-L2 and Compass-B2, according to Fig. 2, can by opening the first switch 501 in the first switch interconnect module 50, the second switch 502 in closed first switch interconnect module 50 and the 3rd switch 503; Open the 3rd Switch Controller 603 and the 4th Switch Controller 604 of second switch interconnecting modules 60 kinds, the first Switch Controller 601 in closed second switch interconnecting modules 60 and second switch are to 602; Setting the first analog intermediate frequency passage 30 and the IF-FRE of the second analog intermediate frequency passage 40 is a fixed value (can identical also can be different), the bandwidth setting the first analog intermediate frequency passage 30 is 2MHz, the bandwidth setting the second analog intermediate frequency passage 40 is 20MHz, realizes the parallel reception of GNSS signal GPS-L2 and Compass-B2.
Such as, if the GNSS signal bandwidth at 1.2GHz frequency band place is all broadband, GPS-L5 and Compass-B2.Figure 12 gives the parallel embodiment receiving the receiver of GPS-L1 and Compass-B1, according to Fig. 2, can by opening the first switch 501 in the first switch interconnect module 50, the second switch 502 in closed first switch interconnect module 50 and the 3rd switch 503; Open the first Switch Controller 601 and the 4th Switch Controller 604 of second switch interconnecting modules 60 kinds, the second switch in closed second switch interconnecting modules 60 is to 602 and the 3rd Switch Controller 603; The IF-FRE setting the second analog intermediate frequency passage 40 is a fixed value, and the bandwidth setting the second analog intermediate frequency passage 40 is 20MHz, realizes the parallel reception of GNSS signal GPS-L5 and Compass-B2.
Figure 13 gives and to walk abreast the embodiment of local oscillation signal generation module 70 under receiving for 1.6GHz frequency band place GNSS signal, second frequency synthesizer 702 in local oscillation signal generation module 70 provides the orthogonal local oscillation signal at 1.2GHz frequency band place by two divided-frequency, first frequency synthesizer 701 is by carrying out the orthogonal local oscillation signal that four frequency divisions provide 1.2GHz frequency band place again after up-conversion single sideband mixing.
In sum; although the present invention discloses as above with preferred embodiment; so itself and be not used to limit the present invention; any those of ordinary skill in the art; without departing from the spirit and scope of the present invention; when doing various change and retouching, the scope that therefore protection scope of the present invention ought define depending on claims is as the criterion.
Claims (6)
1. the multimode parallel radio frequency receiver towards GPS (Global Position System), it is characterized in that comprising two low noise amplifiers, two quadrature frequency conversion frequency mixer, two switched fabric modules, two analog intermediate frequency passages, a local frequency generation module and a sampling clock generation module;
Described two low noise amplifiers are respectively the first low noise amplifier and the second low noise amplifier, and the output terminal of two low noise amplifiers connects two input ends of the first switched fabric module respectively;
Described two switched fabric modules are respectively the first switched fabric module and second switch interconnecting modules, described first switched fabric module comprises the first switch, second switch and the 3rd switch, wherein one end of the first switch and one end of second switch are connected the output terminal of the first low noise amplifier and the second low noise amplifier respectively as the input of the first switched fabric module, the first switch and the other end of second switch be connected respectively the 3rd switch two ends and as the output terminal of the first switched fabric module;
Described two quadrature frequency conversion frequency mixer are respectively the first quadrature frequency conversion frequency mixer and the second quadrature frequency conversion frequency mixer, wherein an input end of the first quadrature frequency conversion frequency mixer connects the output terminal of the first switch in the first switched fabric module, another input end is orthogonal local oscillation signal input end, an input end of the second quadrature frequency conversion frequency mixer connects the output terminal of second switch in the first switched fabric module, another input end is orthogonal local oscillation signal input end, 3rd end of the first quadrature frequency conversion frequency mixer and the 3rd end of the second quadrature frequency conversion frequency mixer are respectively as its orthogonal output terminal,
Described local oscillation signal generation module comprises two frequency synthesizers, two polyphase filters, a up-conversion single sideband mixer, five two-dividers, and eight switches; Wherein the output terminal of first frequency synthesizer connects one end of the Ith switch and the IIth switch respectively, the other end of the Ith switch is by the first two-divider output orthogonal local oscillation signal to the first quadrature frequency conversion frequency mixer, the output terminal of second frequency synthesizer connects one end of the IIIth switch and the IVth switch respectively, and the other end of the IIIth switch is by the second two-divider output orthogonal local oscillation signal to the second quadrature frequency conversion frequency mixer; The other end of the IIth switch and the other end of the IVth switch are connected to node a, and pass through the input end of the 3rd two-divider output orthogonal signal to up-conversion single sideband mixer; One end of Vth switch and one end of the VIth switch are connected to node a equally, and the other end is then connected to one end of two polyphase filters, and the other end of two polyphase filters connects another input end of up-conversion single sideband mixer respectively; The output terminal of up-conversion single sideband mixer exports node b to by the 4th two-divider, one end of VIIth switch and one end of the VIIIth switch are connected to node b, the other end of the VIIth switch is by the 5th two-divider output orthogonal local oscillation signal to the first quadrature frequency conversion frequency mixer, and the other end of the VIIIth switch is equally as orthogonal local oscillation signal output terminal to the second quadrature frequency conversion frequency mixer;
Described second switch interconnecting modules comprises four Switch Controller, and wherein the two ends of the first Switch Controller and the right two ends of second switch are respectively as the first input end of second switch interconnect module, the first output terminal, the second input end, the second output terminal; The two ends of the 3rd Switch Controller connect first input end and second output terminal of second switch interconnecting modules respectively, and the two ends of the 4th Switch Controller connect the second input end and first output terminal of second switch interconnecting modules respectively; The first input end of second switch interconnecting modules connects the orthogonal output terminal of the first quadrature frequency conversion frequency mixer, and the second input end of second switch interconnect module connects the orthogonal output terminal of the second quadrature frequency conversion frequency mixer;
Described analog intermediate frequency passage comprises the first analog intermediate frequency passage and the second analog intermediate frequency passage, and the end of the input of described first analog intermediate frequency passage and the second analog intermediate frequency passage connects the first output terminal and second output terminal of second switch interconnecting modules respectively;
Described sampling clock generation module adopts the phase-locked loop based on ring oscillator to realize, and sampled clock signal exports analog to digital converter in the first analog intermediate frequency passage and the second analog intermediate frequency passage and follow-up digital demodulation blocks respectively to.
2. the multimode parallel radio frequency receiver towards GPS (Global Position System) according to claim 1, it is characterized in that: described first low noise amplifier is used for receiving the GNSS signal at 1.6GHz frequency band place by outside matching network, the second low noise amplifier is used for receiving the GNSS signal at 1.2GHz frequency band place by outside matching network.
3. the multimode parallel radio frequency receiver towards GPS (Global Position System) according to claim 3, it is characterized in that: described first analog intermediate frequency passage and the second analog intermediate frequency passage include the complex bandpass filters be linked in sequence, programmable gain amplifier, analog to digital converter and one are used for carrying out programmable gain amplifier the automatic gain control circuit of gain-adjusted.
4. the multimode parallel radio frequency receiver towards GPS (Global Position System) according to claim 4, it is characterized in that: in described first switched fabric module and second switch interconnecting modules, the control signal of internal switch is all controlled by interface circuit, and control signal is from digital demodulation blocks.
5. the multimode parallel radio frequency receiver towards GPS (Global Position System) according to claim 5, it is characterized in that: described first analog intermediate frequency passage and the second analog intermediate frequency passage all have fixing IF-FRE, first intermediate frequency analog channel is used for receiving arrowband GNSS signal, and the second analog intermediate frequency passage is used for receiving broadband analogue intermediate-freuqncy signal.
6. the multimode parallel radio frequency receiver towards GPS (Global Position System) according to claim 6, it is characterized in that: to realize, multisystem GNSS multimode that is compatible or single system multifrequency point compatibility is parallel to be received the GNSS radiofrequency signal that two low noise amplifiers receive from antenna through matched design respectively, the first switched fabric module is exported to after amplifying, first switch interconnect module receives the GNSS signal after low noise amplifier amplifies, the compatibility mode different according to receiver is selectively exported to corresponding quadrature frequency conversion frequency mixer, two quadrature frequency conversion frequency mixer receive the orthogonal local oscillation signal that GNSS signal and local frequency generation module from the first switched fabric module export respectively, the GNSS signal being positioned at rf frequency place is downconverted to IF-FRE place, and be converted to complex field by the process of signal by real number field, local frequency generation module receive from external crystal-controlled oscillation export reference clock signal, and local oscillation signal respectively to two providing two-way orthogonal a quadrature frequency conversion frequency mixer, second switch interconnecting modules receives the GNSS intermediate-freuqncy signal exported from two quadrature frequency conversion frequency mixer, and the compatibility mode different according to receiver exports it to corresponding analog intermediate frequency module respectively, analog intermediate frequency module carries out the filtering of image signal and out-of-band noise to the GNSS intermediate-freuqncy signal received, and be reduced to real number field by the process of signal by complex field, be converted into digital signal after carrying out amplification to a certain degree, and export digital demodulation blocks to and process, sampling clock generation module receives the reference clock signal exported from external crystal-controlled oscillation equally, and exports sampled clock signal to analog to digital converter and digital demodulation blocks.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510167445.3A CN104749591A (en) | 2015-04-09 | 2015-04-09 | Global navigation satellite system oriented multi-mode parallel radio-frequency receiver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510167445.3A CN104749591A (en) | 2015-04-09 | 2015-04-09 | Global navigation satellite system oriented multi-mode parallel radio-frequency receiver |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104749591A true CN104749591A (en) | 2015-07-01 |
Family
ID=53589565
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510167445.3A Pending CN104749591A (en) | 2015-04-09 | 2015-04-09 | Global navigation satellite system oriented multi-mode parallel radio-frequency receiver |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104749591A (en) |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105301607A (en) * | 2015-11-20 | 2016-02-03 | 武汉梦芯科技有限公司 | Device, system and method for narrowband interference suppression of single-frequency and multi-frequency GNSS signals |
| CN107968672A (en) * | 2016-10-20 | 2018-04-27 | 国民技术股份有限公司 | A kind of method and its circuit for improving Bluetooth communication distance |
| CN108631860A (en) * | 2018-08-17 | 2018-10-09 | 北京微宇技术有限公司 | Terminal and intersatellite communication means and terminal |
| CN108964692A (en) * | 2017-05-27 | 2018-12-07 | 南宁富桂精密工业有限公司 | Radio circuit and radio frequency system |
| CN109884602A (en) * | 2019-02-22 | 2019-06-14 | 北京遥感设备研究所 | A kind of radio frequency multichannel full bandwidth Phase Compensation System and compensation method |
| CN110196437A (en) * | 2018-02-26 | 2019-09-03 | 瑞昱半导体股份有限公司 | Satellite signal receiving circuit and satellite signal reception method |
| CN111162807A (en) * | 2018-11-07 | 2020-05-15 | 联发科技股份有限公司 | Receiver with a plurality of receivers |
| CN111384986A (en) * | 2018-12-31 | 2020-07-07 | 浙江英特讯信息科技有限公司 | Intelligent communication management terminal |
| CN111510197A (en) * | 2020-04-01 | 2020-08-07 | 上海航天测控通信研究所 | Satellite-borne dual-channel multi-band selectable up-conversion device |
| CN112073894A (en) * | 2019-05-24 | 2020-12-11 | 大唐移动通信设备有限公司 | Information determination method and device |
| CN113009516A (en) * | 2021-04-19 | 2021-06-22 | 北京工业大学 | Independent double-channel navigation enhanced satellite receiver |
| CN113037307A (en) * | 2019-12-09 | 2021-06-25 | 北京合众思壮科技股份有限公司 | Satellite receiver chip and satellite receiver system |
| US11169276B2 (en) | 2018-02-13 | 2021-11-09 | Realtek Semiconductor Corporation | Satellite signal receiving circuit and satellite signal receiving method |
| CN114076962A (en) * | 2020-08-21 | 2022-02-22 | 北京合众思壮科技股份有限公司 | Signal processing device, method and system |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7701300B2 (en) * | 2006-01-24 | 2010-04-20 | Samsung Electronics Co., Ltd. | Multi-frequency synthesizing apparatus and method for multi-band RF receiver |
| CN102176035A (en) * | 2011-01-28 | 2011-09-07 | 北京大学 | Multimode parallel radio frequency receiving method and device orientated to satellite navigation system of next generator |
| CN102231636A (en) * | 2011-06-21 | 2011-11-02 | 清华大学 | Radio frequency front end device of receiver and signal receiving method thereof |
| CN102243313A (en) * | 2011-04-25 | 2011-11-16 | 上海迦美信芯通讯技术有限公司 | Dual-channel radio frequency receiver and frequency planning method thereof |
-
2015
- 2015-04-09 CN CN201510167445.3A patent/CN104749591A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7701300B2 (en) * | 2006-01-24 | 2010-04-20 | Samsung Electronics Co., Ltd. | Multi-frequency synthesizing apparatus and method for multi-band RF receiver |
| CN102176035A (en) * | 2011-01-28 | 2011-09-07 | 北京大学 | Multimode parallel radio frequency receiving method and device orientated to satellite navigation system of next generator |
| CN102243313A (en) * | 2011-04-25 | 2011-11-16 | 上海迦美信芯通讯技术有限公司 | Dual-channel radio frequency receiver and frequency planning method thereof |
| CN102231636A (en) * | 2011-06-21 | 2011-11-02 | 清华大学 | Radio frequency front end device of receiver and signal receiving method thereof |
Non-Patent Citations (1)
| Title |
|---|
| SONGTING LI ET.AL: "Reconfigurable All-band GNSS RF CMOS Receiver", 《ELECTRONICS,CIRCUITS AND SYSTEMS(ICECS),2014 21ST IEEE INTERNATIONAL CONFERENCE ON》 * |
Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105301607A (en) * | 2015-11-20 | 2016-02-03 | 武汉梦芯科技有限公司 | Device, system and method for narrowband interference suppression of single-frequency and multi-frequency GNSS signals |
| CN107968672A (en) * | 2016-10-20 | 2018-04-27 | 国民技术股份有限公司 | A kind of method and its circuit for improving Bluetooth communication distance |
| CN108964692A (en) * | 2017-05-27 | 2018-12-07 | 南宁富桂精密工业有限公司 | Radio circuit and radio frequency system |
| US11169276B2 (en) | 2018-02-13 | 2021-11-09 | Realtek Semiconductor Corporation | Satellite signal receiving circuit and satellite signal receiving method |
| CN110196437A (en) * | 2018-02-26 | 2019-09-03 | 瑞昱半导体股份有限公司 | Satellite signal receiving circuit and satellite signal reception method |
| CN110196437B (en) * | 2018-02-26 | 2021-12-21 | 瑞昱半导体股份有限公司 | Satellite signal receiving circuit and satellite signal receiving method |
| CN108631860A (en) * | 2018-08-17 | 2018-10-09 | 北京微宇技术有限公司 | Terminal and intersatellite communication means and terminal |
| CN111162807A (en) * | 2018-11-07 | 2020-05-15 | 联发科技股份有限公司 | Receiver with a plurality of receivers |
| CN111384986A (en) * | 2018-12-31 | 2020-07-07 | 浙江英特讯信息科技有限公司 | Intelligent communication management terminal |
| CN109884602A (en) * | 2019-02-22 | 2019-06-14 | 北京遥感设备研究所 | A kind of radio frequency multichannel full bandwidth Phase Compensation System and compensation method |
| CN112073894A (en) * | 2019-05-24 | 2020-12-11 | 大唐移动通信设备有限公司 | Information determination method and device |
| CN112073894B (en) * | 2019-05-24 | 2022-03-22 | 大唐移动通信设备有限公司 | Information determination method and device |
| US12055648B2 (en) | 2019-05-24 | 2024-08-06 | Datang Mobile Communications Equipment Co., Ltd. | Method and device for determining information |
| CN113037307A (en) * | 2019-12-09 | 2021-06-25 | 北京合众思壮科技股份有限公司 | Satellite receiver chip and satellite receiver system |
| CN113037307B (en) * | 2019-12-09 | 2022-07-08 | 北京合众思壮科技股份有限公司 | Satellite receiver chip and satellite receiver system |
| CN111510197A (en) * | 2020-04-01 | 2020-08-07 | 上海航天测控通信研究所 | Satellite-borne dual-channel multi-band selectable up-conversion device |
| CN114076962A (en) * | 2020-08-21 | 2022-02-22 | 北京合众思壮科技股份有限公司 | Signal processing device, method and system |
| CN113009516A (en) * | 2021-04-19 | 2021-06-22 | 北京工业大学 | Independent double-channel navigation enhanced satellite receiver |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104749591A (en) | Global navigation satellite system oriented multi-mode parallel radio-frequency receiver | |
| CN105549038B (en) | L1 and L2 two-band satellite navigation receiver RF front-end circuits | |
| US8306154B2 (en) | Multi-frequency band receiver | |
| US10101461B2 (en) | Radio frequency circuit structure for implementing function of converting GNSS satellite signal into baseband signal | |
| CN102916712B (en) | Wireless receiver | |
| JP2007159106A (en) | Multiband gnss receiver | |
| CN105122657B (en) | Signal receiver while distribution with interspersion frequency | |
| CN104459735B (en) | The high-precision difference service of Big Dipper satellite-based receives device | |
| CN110907962A (en) | Beidou double-frequency satellite signal radio frequency receiver | |
| CN204515143U (en) | A kind of anti-interference GPS dual-frequency receiver radio frequency front-end device | |
| CN101174840B (en) | Programmable direct RF digitization receiver for multiple RF bands and method thereof | |
| CN104849729A (en) | Beidou satellite navigation anti-interference system | |
| CN102323600A (en) | System architecture of dual-channel navigation radio-frequency receiver | |
| CN103051352A (en) | Multimode multifrequency transceiver | |
| CN102540204B (en) | Single-chip dual-frequency global satellite navigation receiver | |
| CN102520424A (en) | Low intermediate frequency double-frequency dual mode GNSS receiver radio frequency front-end apparatus | |
| CN105549044A (en) | Combined positioning device and method of GNSS (Global Navigation Satellite System) based on data fusion | |
| CN103885072A (en) | Method for acquiring multi-frequency-point multi-system satellite navigation signals through single-radio-frequency front end and device for achieving method | |
| CN101907698B (en) | Signal process device of multiple satellite positioning system and method thereof | |
| CN101783701A (en) | Radio-frequency receiver of Beidou I navigation system | |
| CN203894414U (en) | Multimode single radio frequency channel GNSS receiver provided with single-chip microcomputer control | |
| CN101872010A (en) | Big Dipper/GPS (Global Position System) signal power divider and manufacture method thereof and dual-system radio frequency receiving module | |
| CN112073073B (en) | Radio frequency signal processing method and device for radio frequency receiver | |
| CN204694850U (en) | The radio-frequency transmitter of the Big Dipper No. two satellite navigation system channel structures | |
| CN101872008A (en) | Beidou satellite navigation system receiving module |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150701 |
|
| WD01 | Invention patent application deemed withdrawn after publication |