CN106896388A - A kind of veneer double antenna satellite-signal switchs to the circuit structure of baseband signal - Google Patents
A kind of veneer double antenna satellite-signal switchs to the circuit structure of baseband signal Download PDFInfo
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- CN106896388A CN106896388A CN201710193343.8A CN201710193343A CN106896388A CN 106896388 A CN106896388 A CN 106896388A CN 201710193343 A CN201710193343 A CN 201710193343A CN 106896388 A CN106896388 A CN 106896388A
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Classifications
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- 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
- G01S19/37—Hardware or software details of the signal processing chain
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- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Position Fixing By Use Of Radio Waves (AREA)
Abstract
The present invention devises a kind of veneer double antenna satellite-signal and switchs to the circuit structure of baseband signal.This structure can be applied to veneer double antenna dual system positioning and directing, in addition three systems positioning and directing, it is also possible to be applied to the testing requirement that a plate surveys at 2 points.Realize step：There are two antennal interfaces A and B, two amplifying units and two one-level work(subdivisions on circuit.By forming three road signals after one-level work(point, wherein signal forms two frequency bins after dividing by mixing and two grades of work(all the way, another two-way forms two frequency bins to signal respectively.So A and the antennas of B two respectively form four frequencies, i.e., two frequencies and two two frequencies, such as GPSL1, GPSL2, BDB1, BDB3.Two frequencies of two antennas share a local oscillator unit, and the radiofrequency signal of double antenna then is filtered into treatment；Filtered 8 radiofrequency signals export after down coversion and demodulation process to carry out base band signal process to baseband portion, so as to realize veneer double antenna multisystem satellite application.
Description
Technical field
The present invention relates to GPS, the Big Dipper, GLONASS satellite signal application field, it is a kind of applicable that it is mainly characterized by design
Veneer double antenna supports the circuit structure of multisystem.
Background technology
Present global navigation satellite system has been widely used.In different geographical position, different application domains pair
There are different requirements in system and frequency.It is real how on limited board area for example in the such application aspect of orientation
The existing low cost low-power consumption and circuit structure that can meet requirement again is many scholars in the answer studied and seek.Current satellite should
With field in, more based on single antenna, support veneer double antenna double system or multi-system satellite application mode it is fewer
See, be applied especially to the Big Dipper double antenna positioning and directing of domestic market demand, external board is due to no Big Dipper B3 signals, institute
With substantially without this function.
The content of the invention
Based on technological deficiency present in prior art, in double antenna dual system orientation, on circuit structure, it would be desirable to be able to
It is enough to reduce power consumption and circuit area to greatest extent, based on this purpose, the method for designing of this paper that arisen at the historic moment.
Switch to the circuit structure of baseband signal the invention provides a kind of veneer double antenna satellite-signal,
Two antennas are placed on veneer, and has the separate radiofrequency signal processing unit of two-way；
Each antenna supports two frequencies and two two frequencies；
Any radiofrequency signal processing unit includes amplifying circuit and one-level work(parallel circuit, and the signal of each antenna is by putting
Three signalling channels are formed after the amplification of big circuit and the one-level work(point of one-level work(parallel circuit, two of which signalling channel is separated
Into a frequency of two systems, the signal of one other channel forms two two by upconversion process circuit, two grades of work(parallel circuits
Frequency；
Two the two of antenna frequency-conversion processing circuits share a local oscillator unit；
The 4 frequency radiofrequency signals formed after each single antenna Frequency mixing processing are filtered by modulation treatment circuit；
The signal for processing after filtering is exported into demodulation process and carries out base band signal process to baseband processing circuitry.
Above-mentioned veneer double antenna satellite-signal switchs to the circuit structure structure of baseband signal, wherein, it is respectively configured on veneer
Have separate between two signal processing units of antenna, and two signal processing units.
Above-mentioned veneer double antenna satellite-signal switchs to the circuit structure structure of baseband signal, wherein, signal can be by twice
Work(point forms four frequencies, and three channels are formed through the one-level work(point of one-level work(parallel circuit, through and two grades of work(of level work(parallel circuit
Divide and form four frequencies.
Above-mentioned veneer double antenna satellite-signal switchs to the circuit structure structure of baseband signal, wherein, two of each antenna
Two frequency signals share frequency-conversion processing circuit all the way and carry out up-conversion.
Above-mentioned veneer double antenna satellite-signal switchs to the circuit structure structure of baseband signal, wherein, two the two of antenna
Frequency-conversion processing circuit shares a local oscillator generation unit.
Above-mentioned veneer double antenna satellite-signal switchs to the circuit structure structure of baseband signal, wherein, also including clock signal
Generation unit, dock signal generation unit is connected with local oscillation signal generation unit and base band signal process circuit respectively.
Above-mentioned veneer double antenna satellite-signal switchs to the circuit structure structure of baseband signal, wherein, each antenna is supported respectively
Two frequencies and two signal resources of two frequencies.
Implement step：There are two antennal interfaces A and B on circuit, two amplifying units and two one-level work(point are single
Unit.Signal after one-level work(point by forming three road signals, wherein forming two frequencies after signal is divided to by mixing and two grades of work(all the way
Point, another two-way forms two frequency bins respectively.So A and the antennas of B two respectively form four frequencies, i.e., two frequencies and two two frequencies
Point, such as GPSL1, GPSL2, BDB1, BDB3.Two frequencies of two antennas share a local oscillator unit, then penetrating double antenna
Frequency signal is filtered treatment；Exported to baseband portion after filtered 8 radiofrequency signals are carried out into down coversion and demodulation process
Base band signal process is carried out, so as to realize veneer double antenna multisystem satellite application.This structure has prepared two for each antenna
An individual frequency and two resources of two frequencies, save power consumption, reduce hardware area and cost.
The advantage that the present invention is implemented：The circuit that veneer double antenna satellite-signal is converted to baseband signal of the present invention
Structure is connected on veneer by by double antenna, forms two paths of signals treatment link, possesses the advantage of double antenna.At to signal
Reason, each antenna peels off into four frequencies, can apply to dual system and the positioning and directing to three systems.Two of which frequency is total to
With mixting circuit all the way, on the premise of ensuring signal quality, circuit area and cost are effectively reduced.And use independent sheet
Shaken signal, and two differential circuits local oscillation signal is formed for being used for two-way mixting circuit by buffer amplifier circuit all the way, also reduces two
Channel is interfered with each other, and improves the signal to noise ratio of system.Circuit structure is simple and practical, convenient and swift using process, work
Stable and reliable for performance, the scope of application is relatively broad, is capable of achieving veneer to two detection and localizations of position, wide popular with users.
Brief description of the drawings
By the detailed description made to non-limiting example with reference to the following drawings of reading, the present invention and its feature, outward
Shape and advantage will become more apparent upon.Identical mark indicates identical part in whole accompanying drawings.Not deliberately proportionally
Draw accompanying drawing, it is preferred that emphasis is purport of the invention is shown.
Fig. 1 is the entirety of the circuit structure that a kind of veneer double antenna satellite-signal of the present invention is converted to baseband signal
Structural representation.
Specific embodiment
In the following description, a large amount of concrete details are given to provide more thorough understanding of the invention.So
And, it is obvious to the skilled person that the present invention can be able to without one or more of these details
Implement.In other examples, in order to avoid obscuring with the present invention, do not enter for some technical characteristics well known in the art
Row description.
In order to thoroughly understand the present invention, detailed step and detailed structure will be proposed in following description, so as to
Explaination technical scheme.Presently preferred embodiments of the present invention is described in detail as follows, but in addition to these detailed descriptions, this
Invention can also have other embodiment.
Switch to the circuit structure of baseband signal the invention provides a kind of veneer double antenna satellite-signal, concrete structure is such as
Under：
Two antennas are placed on veneer, and has the separate radiofrequency signal processing unit of two-way；
Each antenna supports two frequencies and two two frequencies；
Any radiofrequency signal processing unit includes amplifying circuit and one-level work(parallel circuit, and the signal of each antenna is by putting
Three signalling channels are formed after the amplification of big circuit and the one-level work(point of one-level work(parallel circuit, two of which signalling channel is separated
Into a frequency of two systems, the signal of one other channel forms two two by upconversion process circuit, two grades of work(parallel circuits
Frequency；
Two the two of antenna frequency-conversion processing circuits share a local oscillator unit；
The 4 frequency radiofrequency signals formed after each single antenna Frequency mixing processing are filtered by modulation treatment circuit；
The signal for processing after filtering is exported into demodulation process and carries out base band signal process to baseband processing circuitry.
In an optional embodiment of the invention, two signal processing units of antenna, and two are each configured with veneer
It is separate between individual signal processing unit.
In an optional embodiment of the invention, signal can form four frequencies by work(twice point, through one-level work(point electricity
The one-level work(on road point forms three channels, through and two grades of work(of level work(parallel circuit point form four frequencies.
In an optional embodiment of the invention, two two frequency signals of each antenna share frequency-conversion processing circuit all the way
Carry out up-conversion.
In an optional embodiment of the invention, two the two of antenna frequency-conversion processing circuits share a local oscillator and produce list
Unit.
In an optional embodiment of the invention, also including dock signal generation unit, dock signal generation unit difference
It is connected with local oscillation signal generation unit and base band signal process circuit.
In an optional embodiment of the invention, each antenna supports that two frequencies and two signals of two frequencies are provided respectively
Source.
A kind of veneer double antenna satellite-signal that the present invention is provided is converted to the circuit structure of baseband signal, and its signal comes from
By A roads LNA, into A roads one-level centimetre device, work(separates three letters to the signal received in two antenna A and B, A antenna
Road, device separates two frequency signals to two of which channel after filtering, and one other channel is carried out into A roads mixting circuit
Frequency conversion, then two grades of work(be divided into two channels, respectively through wave filter after, as two two frequency signals, such a antenna
Four frequencies of two systems will be supported.By B roads LNA and power splitter, work(point, generates same principle B antennas after mixing
Four, B roads frequency signal.A local oscillator unit is shared in two mixing of antenna of mixing portion and signal is provided, so local oscillation circuit
It is connected with two mixting circuits.Veneer is placed into two antennas, is connected with corresponding amplifier circuit unit respectively, signal is passed through
After amplifier circuit unit, three path channels are formed, wherein two-way is directly entered filter unit, and the 3rd tunnel enters mixting circuit.Into
The signal of mixting circuit, by treatment, can carry out two grades of centimetres, form two signals.
Further, the mixting circuit units shared local oscillator generation unit of two antenna.Veneer double antenna satellite-signal
Being converted to the circuit structure of baseband signal also includes dock signal generation unit, dock signal generation unit respectively with local oscillation signal
Generation unit is connected with base band signal process circuit.Veneer double antenna satellite-signal is converted to the circuit structure of baseband signal, often
Individual antenna supports two frequencies and two two frequencies.
Fig. 1 is refer to below, shows that the present invention is converted in the double antenna dual system satellite-signal of an exemplary embodiments
The circuit structure of baseband signal, it is described that the circuit structure that double antenna satellite-signal is converted to baseband signal is included that signal amplifies list
Unit, work(subdivision, signal Frequency mixing processing unit, local oscillation signal generation unit, AD conversion unit, base band signal process circuit, when
Clock generation unit.A antennas are connected with B antennas difference two-way noiselike signal magnification processing, and the signal after amplification enters work(
Processing unit, i.e. signal amplification unit is divided to be joined directly together with work(subdivision；The two-way work(point processing unit is outer respectively to connect three
Channel, the direct-connected filter unit of two of which channel, Article 3 channel connection mixing unit, the direct-connected two grades of work(of mixing unit point is single
Unit, forms two path channels, and the direct-connected filter unit of two path channels separates useful signal.The local oscillation signal generation unit connection
Local oscillation signal amplifying unit, forms two-way local oscillation signal, direct-connected signal Frequency mixing processing unit afterwards.The signal passes through filter unit
Demodulation process unit is connected to, into base band.The clock generating unit connects local oscillation signal generation unit, demodulation process simultaneously
Unit, baseband signal.Overall circuit structure is simple and practical, stable and reliable working performance convenient and swift using process, is applicable model
Enclose relatively broad.
The advantage that the present invention is implemented：The circuit that veneer double antenna satellite-signal is converted to baseband signal of the present invention
Structure is connected on veneer by by double antenna, forms two paths of signals treatment link, possesses the advantage of double antenna.At to signal
Reason, each antenna peels off into four frequencies, can apply to dual system and the positioning and directing to three systems.Two of which frequency is total to
With mixting circuit all the way, on the premise of ensuring signal quality, circuit area and cost are effectively reduced.And use independent sheet
Shaken signal, and two differential circuits local oscillation signal is formed for being used for two-way mixting circuit by buffer amplifier circuit all the way, also reduces two
Channel is interfered with each other, and improves the signal to noise ratio of system.Circuit structure is simple and practical, convenient and swift using process, work
Stable and reliable for performance, the scope of application is relatively broad, is capable of achieving veneer to two detection and localizations of position, wide popular with users.
Presently preferred embodiments of the present invention is described above.It is to be appreciated that the invention is not limited in above-mentioned
Particular implementation, wherein the equipment and structure that do not describe in detail to the greatest extent are construed as giving reality with the common mode in this area
Apply；Any those of ordinary skill in the art, in the case where technical solution of the present invention ambit is not departed from, all using the disclosure above
Methods and techniques content make many possible variations and modification to technical solution of the present invention, or be revised as equivalent variations etc.
Effect embodiment, this has no effect on substance of the invention.Therefore, every content without departing from technical solution of the present invention, foundation
Technical spirit of the invention still falls within the present invention to any simple modification, equivalent variation and modification made for any of the above embodiments
In the range of technical scheme protection.
Claims (7)
1. a kind of veneer double antenna satellite-signal switchs to the circuit structure of baseband signal, it is characterised in that
Two antennas are placed on veneer, and has the separate radiofrequency signal processing unit of two-way；
Each antenna supports two frequencies and two two frequencies；
Any radiofrequency signal processing unit includes amplifying circuit and one-level work(parallel circuit, and the signal of each antenna is by amplifying electricity
Three signalling channels are formed after the amplification on road and the one-level work(of one-level work(parallel circuit point, two of which signalling channel is separated into two
One frequency of individual system, the signal of one other channel forms two two frequencies by upconversion process circuit, two grades of work(parallel circuits；
Two the two of antenna frequency-conversion processing circuits share a local oscillator unit；
The 4 frequency radiofrequency signals formed after each single antenna Frequency mixing processing are filtered by modulation treatment circuit；
The signal for processing after filtering is exported into demodulation process and carries out base band signal process to base band signal process circuit.
2. veneer double antenna satellite-signal according to claim 1 switchs to the circuit structure structure of baseband signal, and its feature exists
In being each configured with veneer separate between two signal processing units of antenna, and two signal processing units.
3. veneer double antenna satellite-signal according to claim 1 switchs to the circuit structure structure of baseband signal, and its feature exists
Can form four frequencies by work(twice point in, signal, three channels are formed through the one-level work(point of one-level work(parallel circuit, through and level
Two grades of work(of work(parallel circuit point form four frequencies.
4. veneer double antenna satellite-signal according to claim 1 switchs to the circuit structure structure of baseband signal, and its feature exists
In two two frequency signals of each antenna share frequency-conversion processing circuit all the way carries out up-conversion.
5. veneer double antenna satellite-signal according to claim 1 switchs to the circuit structure structure of baseband signal, and its feature exists
In two the two of antenna frequency-conversion processing circuits share a local oscillator generation unit.
6. veneer double antenna satellite-signal according to claim 5 switchs to the circuit structure structure of baseband signal, and its feature exists
In, also including dock signal generation unit, dock signal generation unit respectively with local oscillation signal generation unit and baseband signal at
Reason circuit is connected.
7. veneer double antenna satellite-signal according to claim 1 switchs to the circuit structure structure of baseband signal, and its feature exists
In each antenna supports the signal resource of two frequencies and two two frequencies respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710193343.8A CN106896388A (en) | 2017-03-28 | 2017-03-28 | A kind of veneer double antenna satellite-signal switchs to the circuit structure of baseband signal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710193343.8A CN106896388A (en) | 2017-03-28 | 2017-03-28 | A kind of veneer double antenna satellite-signal switchs to the circuit structure of baseband signal |
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| Publication Number | Publication Date |
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| CN106896388A true CN106896388A (en) | 2017-06-27 |
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|---|---|---|---|
| CN201710193343.8A Pending CN106896388A (en) | 2017-03-28 | 2017-03-28 | A kind of veneer double antenna satellite-signal switchs to the circuit structure of baseband signal |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114326785A (en) * | 2021-11-30 | 2022-04-12 | 国网河南省电力公司荥阳市供电公司 | Unmanned aerial vehicle transformer substation flight detection system |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101587188A (en) * | 2008-05-22 | 2009-11-25 | 电子科技大学 | Monopulse radar system based on time modulation antenna array |
| CN103728634A (en) * | 2014-01-20 | 2014-04-16 | 武汉大学 | Double-antenna A-GNSS receiving machine system |
| CN104734640A (en) * | 2015-03-06 | 2015-06-24 | 上海海积信息科技股份有限公司 | Frequency changing circuit and receiver board |
| CN206684307U (en) * | 2017-03-28 | 2017-11-28 | 上海双微导航技术有限公司 | A kind of veneer double antenna satellite-signal switchs to the circuit structure of baseband signal |
-
2017
- 2017-03-28 CN CN201710193343.8A patent/CN106896388A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101587188A (en) * | 2008-05-22 | 2009-11-25 | 电子科技大学 | Monopulse radar system based on time modulation antenna array |
| CN103728634A (en) * | 2014-01-20 | 2014-04-16 | 武汉大学 | Double-antenna A-GNSS receiving machine system |
| CN104734640A (en) * | 2015-03-06 | 2015-06-24 | 上海海积信息科技股份有限公司 | Frequency changing circuit and receiver board |
| CN206684307U (en) * | 2017-03-28 | 2017-11-28 | 上海双微导航技术有限公司 | A kind of veneer double antenna satellite-signal switchs to the circuit structure of baseband signal |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114326785A (en) * | 2021-11-30 | 2022-04-12 | 国网河南省电力公司荥阳市供电公司 | Unmanned aerial vehicle transformer substation flight detection system |
| CN114326785B (en) * | 2021-11-30 | 2024-02-27 | 国网河南省电力公司荥阳市供电公司 | Unmanned aerial vehicle transformer substation flight detecting system |
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