CN106919880A - Radiofrequency signal audiomonitor - Google Patents
Radiofrequency signal audiomonitor Download PDFInfo
- Publication number
- CN106919880A CN106919880A CN201511005105.7A CN201511005105A CN106919880A CN 106919880 A CN106919880 A CN 106919880A CN 201511005105 A CN201511005105 A CN 201511005105A CN 106919880 A CN106919880 A CN 106919880A
- Authority
- CN
- China
- Prior art keywords
- signal
- radiofrequency signal
- antenna
- frequency
- baseband
- 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
- 238000012545 processing Methods 0.000 claims abstract description 35
- 238000000034 method Methods 0.000 claims abstract description 7
- 230000008569 process Effects 0.000 claims abstract description 7
- 239000000758 substrate Substances 0.000 claims description 15
- 238000012360 testing method Methods 0.000 abstract description 7
- 238000012544 monitoring process Methods 0.000 abstract description 5
- 238000011160 research Methods 0.000 abstract description 4
- 238000001914 filtration Methods 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 238000004891 communication Methods 0.000 description 3
- 230000005855 radiation Effects 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 239000000306 component Substances 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000005404 monopole Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
- G06K7/10—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
- G06K7/10009—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves
- G06K7/10316—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves using at least one antenna particularly designed for interrogating the wireless record carriers
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
- G06K7/10—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
- G06K2007/10524—Hand-held scanners
Landscapes
- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Physics & Mathematics (AREA)
- Computer Networks & Wireless Communication (AREA)
- Electromagnetism (AREA)
- General Health & Medical Sciences (AREA)
- Artificial Intelligence (AREA)
- Computer Vision & Pattern Recognition (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Transceivers (AREA)
Abstract
The present invention provides a kind of radiofrequency signal audiomonitor, including：Antenna, RF front-end module and control module, it obtains radiofrequency signal by antenna, then radiofrequency signal is down-converted into intermediate-freuqncy signal by RF front-end module, and intermediate-freuqncy signal is demodulated into baseband signal, decoding process is carried out to baseband signal by processing module again, and decoded baseband signal is sent to host computer, it is achieved thereby that the monitoring to radiofrequency signal in rfid system.Radiofrequency signal audiomonitor small volume, low cost that the present embodiment is provided, disclosure satisfy that RFID fields research staff, live application personnel for portable protocol test equipment demand.
Description
Technical field
The present invention relates to communication technical field, more particularly to a kind of radiofrequency signal audiomonitor.
Background technology
Superfrequency (Ultra High Frequency, UHF) radio frequency identification (Radio Frequency
Identification, RFID) system is typically made up of read write line, label and application layer software.Its basic work
It is as principle：After label enters read write line radiation areas, the radiofrequency signal that read write line sends is received, relied on
To radiofrequency signal detection energy supply and storage information (passive label) in the chips is sent out, or, by
Label actively sends storage information (active label) in the chips, after read write line receives label information,
Application layer software treatment is given by valid data.
When exploitation test or live application problem are processed, it is often necessary to analyze between read write line and label
Interaction data.For the data that label sends, typically can again pass through man-machine interface via read write line parsing
Display.And label is because encapsulation integrated level is higher and without external interface, cannot typically be used for monitoring read-write
The data that device end sends.
Using signal analyzer and RFID protocol of arranging in pairs or groups parsing option, can be with Direct Acquisition space
RFID radiofrequency signals.But, the general volume weight of signal analyzer is larger to be unsuitable for scene application test,
And involve great expense and cannot largely be allotted to on-the-spot test personnel.
The content of the invention
For the drawbacks described above of prior art, the present invention provides a kind of small volume, the radiofrequency signal of low cost
Audiomonitor.
The present invention provides a kind of radiofrequency signal audiomonitor, including：Antenna, RF front-end module and treatment
Module, RF front-end module is connected with antenna and processing module respectively；Wherein,
Antenna, for obtaining radiofrequency signal；
RF front-end module, for radiofrequency signal to be down-converted into intermediate-freuqncy signal, and intermediate-freuqncy signal is demodulated
It is baseband signal；
Processing module, for carrying out decoding process to baseband signal, and decoded baseband signal is sent
To host computer.
In one embodiment of this invention, antenna is specifically included：Medium substrate, radiating element, feeder line and
Earth plate；
Radiating element and feeder line are located at the upper surface of medium substrate, and earth plate is located at the lower surface of medium substrate；
Radiating element includes multiple parallel microstrip lines and multiple vertical microstrip lines, and parallel microstrip line is micro- with vertical
Band line is arranged alternately to form S-shaped foldable structure；Radiating element end is electrically connected by vertical microstrip line and feeder line
Connect, and radiating element end vertical microstrip line be located at medium substrate middle part.
In one embodiment of this invention, RF front-end module is specifically included：Local oscillator, frequency mixer
And wave detector, the input of frequency mixer is connected with local oscillator and antenna respectively, the output end of frequency mixer
It is connected with wave detector；
Local oscillator, for producing local oscillated signal；
Frequency mixer, for radiofrequency signal and local oscillated signal to be mixed, to produce intermediate-freuqncy signal；
Wave detector, for intermediate-freuqncy signal to be demodulated into baseband signal.
In one embodiment of this invention, RF front-end module also includes：Radio frequency band filter and low noise
Acoustic amplifier, antenna, radio frequency band filter, low-noise amplifier and frequency mixer are sequentially connected；
Radio frequency band filter, for being filtered to radiofrequency signal；
Low-noise amplifier, for amplifying filtered radiofrequency signal.
In one embodiment of this invention, RF front-end module also includes：Intermediate-frequency filter and Base-Band Processing
Circuit；
Intermediate-frequency filter is connected between local oscillator and wave detector, for being filtered to intermediate-freuqncy signal；
Baseband processing circuitry is connected with wave detector, for baseband signal is filtered and threshold judgement treatment.
In one embodiment of this invention, wave detector is logarithmic detector.
In one embodiment of this invention, intermediate-freuqncy signal interface and base band letter are provided with RF front-end module
Number interface；Intermediate-freuqncy signal interface is connected with intermediate-frequency filter, and baseband signal interface connects with baseband processing circuitry
Connect.
In one embodiment of this invention, processing module is connected with local oscillator, and processing module is additionally operable to
The frequency of the local oscillated signal that control local oscillator is produced.
Radiofrequency signal audiomonitor provided in an embodiment of the present invention, radiofrequency signal is obtained by antenna, so
Radiofrequency signal is down-converted into intermediate-freuqncy signal by RF front-end module afterwards, and intermediate-freuqncy signal is demodulated into base band
Signal, then decoding process is carried out to baseband signal by processing module, and decoded baseband signal is sent
To host computer, it is achieved thereby that the monitoring to radiofrequency signal in rfid system.What the present embodiment was provided penetrates
Frequency signal audiomonitor small volume, low cost, disclosure satisfy that RFID fields research staff, scene application
Demand of the personnel for portable protocol test equipment.
Brief description of the drawings
The structural representation of the radiofrequency signal audiomonitor embodiment one that Fig. 1 is provided for the present invention；
Fig. 2 is the structural representation of antenna in Fig. 1；
The structural representation of the radiofrequency signal audiomonitor embodiment two that Fig. 3 is provided for the present invention,
The structural representation of the radiofrequency signal audiomonitor embodiment three that Fig. 4 is provided for the present invention.
Description of reference numerals：
10- antennas；20- RF front-end modules；
30- processing modules；
11- medium substrates；12- radiating elements；
13- feeder lines；14- earth plates；
15- match circuits；
The parallel microstrip lines of 121-；The vertical microstrip lines of 122-；
21- local oscillators；22- frequency mixers；
23- wave detectors；24- radio frequency band filters；
25- low-noise amplifiers；26- intermediate-frequency filters；
27- baseband processing circuitries.
Specific embodiment
To make the purpose, technical scheme and advantage of the embodiment of the present invention clearer, below in conjunction with this hair
Accompanying drawing in bright embodiment, is clearly and completely described to the technical scheme in the embodiment of the present invention,
Obviously, described embodiment is a part of embodiment of the invention, rather than whole embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained under the premise of creative work is not made
The every other embodiment for obtaining, belongs to the scope of protection of the invention.
The structural representation of the radiofrequency signal audiomonitor embodiment one that Fig. 1 is provided for the present invention, such as Fig. 1
Shown, the radiofrequency signal audiomonitor that the present embodiment is provided includes：Antenna 10, RF front-end module 20
With processing module 30, RF front-end module 20 is connected with antenna 10 and processing module 30 respectively；Wherein,
Antenna 10, for obtaining radiofrequency signal；RF front-end module 20, in radiofrequency signal is down-converted to
Frequency signal, and intermediate-freuqncy signal is demodulated into baseband signal；Processing module 30, for being carried out to baseband signal
Decoding process, and decoded baseband signal is sent to host computer.
Specifically, antenna 10 has the function of guided electromagnetic wave and radiated electromagnetic wave conversion, it is responsible for capture empty
Between in electromagnetic wave signal (i.e. radiofrequency signal) send RF front-end module 20 to again.Make in the present embodiment
With the monopole antenna 10 for being tuned to 845MHz to 950MHz, to reduce equipment volume.
RF front-end module 20 can be specifically a superhet for single-conversion, be responsible for radio frequency
Signal downconverts to intermediate frequency, and is further demodulated into baseband signal.
Processing module 30 can be specifically a micro-control unit (Microcontroller Unit, MCU) or
Person other micro-chip processors, be responsible for by baseband signal carry out spacing between two-phase (Bi-Phase Space Coding,
FM0) decoding process；If the base band data included in decoded baseband signal meets RFID communication
The data form that agreement specifies, then be sent to host computer by decoded baseband signal, wherein, host computer
Man-machine interface is provided with, the baseband signal for receiving can be analyzed.In the present embodiment, processing module
30 preferably using the MCU of STM32 series, to save power consumption and cost.In addition, processing module 30
Power supply can also be provided to RF front-end module 20；LAN (Local can be provided with processing module 30
Area Network, LAN) interface, RS232 serial line interfaces etc., to realize being connected with host computer.
The radiofrequency signal audiomonitor that the present embodiment is provided is specific when in use, and this equipment is placed in into RFID
Within read write line radiation scope, it is connected with host computer by RS232 serial line interfaces or LAN interface etc..
Antenna 10 can then continue to monitor the radio signal (i.e. radiofrequency signal) and then hair in capture uhf band
Give RF front-end module 20；The radiofrequency signal down coversion that RF front-end module 20 is captured to antenna 10 is simultaneously
Baseband signal is demodulated into, and sends processing module 30 to；Processing module 30 is decoded to baseband signal
Treatment, if the base band data included in decoded baseband signal meets RFID communication protocol form,
Decoded baseband signal is then sent to upper computer software, it is achieved thereby that to radio frequency in rfid system
The monitoring of signal.In the present embodiment, the volume of antenna 10, RF front-end module 20 and processing module 30
It is all smaller, cost also than relatively low, compared to existing signal analyzer, in the present embodiment by antenna 10,
Radiofrequency signal audiomonitor small volume, the low cost of RF front-end module 20 and the composition of processing module 30,
Disclosure satisfy that RFID fields research staff, live application personnel for portable protocol test equipment need
Ask.
The radiofrequency signal audiomonitor that the present embodiment is provided, radiofrequency signal, Ran Houyou are obtained by antenna
Radiofrequency signal is down-converted to intermediate-freuqncy signal by RF front-end module, and intermediate-freuqncy signal is demodulated into baseband signal,
Decoding process is carried out to baseband signal by processing module again, and decoded baseband signal is sent to upper
Machine, it is achieved thereby that the monitoring to radiofrequency signal in rfid system.The radiofrequency signal that the present embodiment is provided
Audiomonitor small volume, low cost, disclosure satisfy that RFID fields research staff, live application personnel couple
In the demand of portable protocol test equipment.
Fig. 2 is the structural representation of antenna in Fig. 1, as shown in Fig. 2 in the present embodiment, antenna 10 has
Body includes：Medium substrate 11, radiating element 12, feeder line 13 and earth plate 14；The He of radiating element 12
Feeder line 13 is located at the upper surface of medium substrate 11, and earth plate 14 is located at the lower surface of medium substrate 11；
Radiating element 12 includes multiple parallel microstrip lines 121 and multiple vertical microstrip lines 122, parallel microstrip line 121
It is arranged alternately to form S-shaped foldable structure with vertical microstrip line 122；The end of radiating element 12 is by vertical micro-
Band line 122 is electrically connected with feeder line 13, and the vertical microstrip line 122 of the end of radiating element 12 is located at medium
The middle part of substrate 11.
Specifically, in the present embodiment, antenna 10 is the change shaped microstrip for being tuned to 845MHz to 950MHz
Plane single pole sub antenna, the characteristics of the antenna has low directionality, small volume, is conducive to the small-sized of equipment
Change.The size of each part can be set according to actual needs in antenna 10, it is preferred that medium substrate 11
Thickness be 0.8mm, dielectric constant is 4.3；The length of radiating element 12 is 150mm, and width is 2mm；
The width of feeder line 13 is 1mm, and the gap between feeder line 13 and earth plate 14 is 0.3mm.
Parallel microstrip line 121 is arranged alternately to form S-shaped folding with vertical microstrip line 122 in radiating element 12
Structure, with save space, reduces antenna volume；The parallel microstrip line 121 that radiating element 12 is specifically included
Number with vertical microstrip line 122 can according to circumstances be set.In the present embodiment, it is preferred that parallel micro-strip
Line 121 and vertical microstrip line 122 are 4, and each parallel microstrip line 121 and vertical microstrip line 122 are total
The length of a length of radiating element 12, i.e. 150mm；Near 3 parallel micro-strips of the head end of radiating element 12
The equal length of line 121；Near the length of the parallel microstrip line 121 of the last item of the end of radiating element 12
It is first half of the length of parallel microstrip line 121 for being located at the head end of radiating element 12；It is single positioned at radiation
The one end of vertical microstrip line 122 microstrip line 121 parallel with the last item of first 12 ends is connected, the other end and
Feeder line 13 is electrically connected, and positioned at the middle part of medium substrate 11.
In addition, match circuit 15 can be connected between radiating element 12 and feeder line 13, the match circuit
15 constitute by resistance, inductively or capacitively, to realize the impedance matching between radiating element 12 and feeder line 13.
The structural representation of the radiofrequency signal audiomonitor embodiment two that Fig. 3 is provided for the present invention, this implementation
Example is a kind of specific circuit structure of RF front-end module 20 in above-mentioned embodiment illustrated in fig. 1.Such as Fig. 3
Shown, RF front-end module 20 is specifically included：Local oscillator 21, frequency mixer 22 and wave detector 23,
The input of frequency mixer 22 is connected with local oscillator 21 and antenna 10 respectively, the output of frequency mixer 22
End is connected with wave detector 23；Local oscillator 21, for producing local oscillated signal；Frequency mixer 22,
For radiofrequency signal and local oscillated signal to be mixed, to produce intermediate-freuqncy signal；Wave detector 23, for inciting somebody to action
Intermediate-freuqncy signal is demodulated into baseband signal.
Specifically, local oscillator 21 is the core component of superhet, for producing local oscillations
Signal, can be using the monolithic integrated optical circuit for being integrated with phaselocked loop and voltage controlled oscillator.In the present embodiment,
Local oscillator 21 can be by Serial Peripheral Interface (SPI) (Serial Peripheral Interface, SPI) and place
Reason module 30 is connected, to control the frequency of change local oscillated signal by processing module 30, it is ensured that
In the case of different radio frequency signal frequency, keep IF signal frequency constant.
Frequency mixer 22 can be responsible for believing radio frequency using structures such as double balanced mixer or single balance mixers
Number mix with local oscillator signal, obtain intermediate-freuqncy signal.In the present embodiment, it is preferred that frequency mixer 22 is adopted
With double balanced mixer 22, to improve equipment performance.
Wave detector 23 can be using logarithmic detector or RMS rectifier etc..In the present embodiment, it is preferred that
Wave detector uses logarithmic detector, also referred to as logafier, and it is made up of a series of amplifier of cascades,
Output signal is in logarithmic function relation with input signal, it is ensured that when the changed power of input signal is very big,
Remain to accurately detect desired signal in output end, you can to detect the input signal of Larger Dynamic scope.
It is used as amplitude shift keying ASK signal demodulating circuits herein, intermediate-freuqncy signal is demodulated into baseband signal.
The structural representation of the radiofrequency signal audiomonitor embodiment three that Fig. 4 is provided for the present invention, this implementation
Example is the further optimization to RF front-end module 20 in above-mentioned embodiment illustrated in fig. 3.In above-mentioned Fig. 3 institutes
On the basis of showing embodiment, as shown in figure 4, in the present embodiment, RF front-end module 20 also includes：Penetrate
Band-pass filter 24 and low-noise amplifier 25, antenna 10, radio frequency band filter 24, low noise
Amplifier 25 and frequency mixer 22 are sequentially connected；Radio frequency band filter 24, for being carried out to radiofrequency signal
Filtering；Low-noise amplifier 25, for amplifying filtered radiofrequency signal.
Specifically, radio frequency band filter 24 can use LTCC (Low Temperature
Co-fired Ceramic, LTCC) wave filter, passband in 845MHz to 950MHz, the filtering utensil
The characteristics of having small Insertion Loss, small volume, can effectively filter out the outer interference signal of useful signal frequency band, prevent low noise
The saturation of acoustic amplifier 25.
Low-noise amplifier 25 can specifically use existing various noise amplifiers, and it is responsible for believing radio frequency
Number amplify.Low-noise amplifier 25 has extremely low noise coefficient and appropriate gain amplifier, is to ensure whole
The critical component of individual receiver system signal to noise ratio.
Further, RF front-end module 20 can also include：Intermediate-frequency filter 26 and Base-Band Processing electricity
Road 27；Intermediate-frequency filter 26 is connected between local oscillator 21 and wave detector 23, for intermediate frequency
Signal is filtered；Baseband processing circuitry 27 is connected with wave detector 23, for being filtered to baseband signal
Ripple and threshold judgement are processed.
Specifically, it is the SAW filter of 70MHz that intermediate-frequency filter 26 can use centre frequency, should
Wave filter has the characteristics of intermediate zone is precipitous, stopband attenuation is very big, can effectively filter out the sheet revealed after mixing
Other garbage signals produced in vibration frequency and mixing, keep the pure of intermediate-freuqncy signal.
Baseband processing circuitry 27 is made up of a series of operation amplifier circuit, with baseband filtering, thresholding
The functions such as judgement, can realize the filtering to baseband signal, and baseband signal is converted to by analog signal
Data signal.
Optionally, in the present embodiment, intermediate-freuqncy signal interface and base can be provided with RF front-end module 20
Band signal interface；Intermediate-freuqncy signal interface is connected with intermediate-frequency filter 26, baseband signal interface and Base-Band Processing
Circuit 27 is connected.By the intermediate-freuqncy signal interface and baseband signal interface that are set on RF front-end module 20,
Those skilled in the art can be convenient to use external instrument and be tested.
Finally it should be noted that：Various embodiments above is merely illustrative of the technical solution of the present invention, rather than right
Its limitation；Although being described in detail to the present invention with reference to foregoing embodiments, this area it is common
Technical staff should be understood：It can still modify to the technical scheme described in foregoing embodiments,
Or equivalent is carried out to which part or all technical characteristic；And these modifications or replacement, and
The scope of the essence disengaging various embodiments of the present invention technical scheme of appropriate technical solution is not made.
Claims (8)
1. a kind of radiofrequency signal audiomonitor, it is characterised in that including：Antenna, RF front-end module and
Processing module, the RF front-end module is connected with the antenna and the processing module respectively；Wherein,
The antenna, for obtaining radiofrequency signal；
The RF front-end module, for the radiofrequency signal to be down-converted into intermediate-freuqncy signal, and will be described
Intermediate-freuqncy signal is demodulated into baseband signal；
The processing module, for carrying out decoding process to the baseband signal, and by decoded base band
Signal is sent to host computer.
2. radiofrequency signal audiomonitor according to claim 1, it is characterised in that the antenna tool
Body includes：Medium substrate, radiating element, feeder line and earth plate；
The radiating element and the feeder line are located at the upper surface of the medium substrate, and the earth plate is located at
The lower surface of the medium substrate；
The radiating element includes multiple parallel microstrip lines and multiple vertical microstrip lines, the parallel microstrip line
It is arranged alternately to form S-shaped foldable structure with the vertical microstrip line；The radiating element end is by vertical
Microstrip line is electrically connected with the feeder line, and the vertical microstrip line of the radiating element end is located at the medium
The middle part of substrate.
3. radiofrequency signal audiomonitor according to claim 1, it is characterised in that before the radio frequency
End module is specifically included：Local oscillator, frequency mixer and wave detector, the input difference of the frequency mixer
It is connected with the local oscillator and the antenna, the output end of the frequency mixer is connected with the wave detector；
The local oscillator, for producing local oscillated signal；
The frequency mixer, for the radiofrequency signal and the local oscillated signal to be mixed, with generation
Frequency signal；
The wave detector, for the intermediate-freuqncy signal to be demodulated into the baseband signal.
4. radiofrequency signal audiomonitor according to claim 3, it is characterised in that before the radio frequency
End module also includes：Radio frequency band filter and low-noise amplifier, the antenna, the radio frequency band logical
Wave filter, the low-noise amplifier and the frequency mixer are sequentially connected；
The radio frequency band filter, for being filtered to the radiofrequency signal；
The low-noise amplifier, for amplifying filtered radiofrequency signal.
5. radiofrequency signal audiomonitor according to claim 4, it is characterised in that before the radio frequency
End module also includes：Intermediate-frequency filter and baseband processing circuitry；
The intermediate-frequency filter is connected between the local oscillator and the wave detector, for described
Intermediate-freuqncy signal is filtered；
The baseband processing circuitry is connected with the wave detector, for being filtered to the baseband signal and
Threshold judgement treatment.
6. radiofrequency signal audiomonitor according to claim 3, it is characterised in that the wave detector
It is logarithmic detector.
7. radiofrequency signal audiomonitor according to claim 5, it is characterised in that before the radio frequency
Intermediate-freuqncy signal interface and baseband signal interface are provided with end module；The intermediate-freuqncy signal interface with it is described in
Frequency wave filter is connected, and the baseband signal interface is connected with the baseband processing circuitry.
8. radiofrequency signal audiomonitor according to claim 3, it is characterised in that the treatment mould
Block is connected with the local oscillator, and the processing module is additionally operable to control what the local oscillator was produced
The frequency of local oscillated signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511005105.7A CN106919880A (en) | 2015-12-28 | 2015-12-28 | Radiofrequency signal audiomonitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511005105.7A CN106919880A (en) | 2015-12-28 | 2015-12-28 | Radiofrequency signal audiomonitor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106919880A true CN106919880A (en) | 2017-07-04 |
Family
ID=59455353
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201511005105.7A Pending CN106919880A (en) | 2015-12-28 | 2015-12-28 | Radiofrequency signal audiomonitor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106919880A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109738724A (en) * | 2018-12-29 | 2019-05-10 | 武汉万集信息技术有限公司 | A kind of method for diagnosing faults of equipment, device, storage medium and electronic device |
| CN110045256A (en) * | 2019-05-17 | 2019-07-23 | 广东电网有限责任公司 | A kind of SHF frequency range local discharge signal reception circuit |
| CN112583360A (en) * | 2021-02-25 | 2021-03-30 | 成都市克莱微波科技有限公司 | Power amplifier amplitude and phase consistency debugging device and method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060097874A1 (en) * | 2004-11-08 | 2006-05-11 | Checkpoint Systems, Inc. | System and method for detecting EAS/RFID tags using step listen |
| CN102654899A (en) * | 2011-03-04 | 2012-09-05 | 上海华虹集成电路有限责任公司 | RFID (Radio Frequency Identification Devices) signal monitoring and analyzing tool and method |
| CN102741863A (en) * | 2010-02-04 | 2012-10-17 | 康尔福盛303公司 | Radio frequency identification device and method |
| CN203118006U (en) * | 2013-03-25 | 2013-08-07 | 重庆电子工程职业学院 | Ultrahigh-frequency RFID (radio frequency identification) reader |
| CN105024769A (en) * | 2015-06-25 | 2015-11-04 | 大唐移动通信设备有限公司 | Monitoring device |
| CN205354044U (en) * | 2015-12-28 | 2016-06-29 | 北京聚利科技股份有限公司 | Radiofrequency signal audiomonitor |
-
2015
- 2015-12-28 CN CN201511005105.7A patent/CN106919880A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060097874A1 (en) * | 2004-11-08 | 2006-05-11 | Checkpoint Systems, Inc. | System and method for detecting EAS/RFID tags using step listen |
| CN102741863A (en) * | 2010-02-04 | 2012-10-17 | 康尔福盛303公司 | Radio frequency identification device and method |
| CN102654899A (en) * | 2011-03-04 | 2012-09-05 | 上海华虹集成电路有限责任公司 | RFID (Radio Frequency Identification Devices) signal monitoring and analyzing tool and method |
| CN203118006U (en) * | 2013-03-25 | 2013-08-07 | 重庆电子工程职业学院 | Ultrahigh-frequency RFID (radio frequency identification) reader |
| CN105024769A (en) * | 2015-06-25 | 2015-11-04 | 大唐移动通信设备有限公司 | Monitoring device |
| CN205354044U (en) * | 2015-12-28 | 2016-06-29 | 北京聚利科技股份有限公司 | Radiofrequency signal audiomonitor |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109738724A (en) * | 2018-12-29 | 2019-05-10 | 武汉万集信息技术有限公司 | A kind of method for diagnosing faults of equipment, device, storage medium and electronic device |
| CN109738724B (en) * | 2018-12-29 | 2021-11-12 | 武汉万集信息技术有限公司 | Fault diagnosis method and device of equipment, storage medium and electronic device |
| CN110045256A (en) * | 2019-05-17 | 2019-07-23 | 广东电网有限责任公司 | A kind of SHF frequency range local discharge signal reception circuit |
| CN112583360A (en) * | 2021-02-25 | 2021-03-30 | 成都市克莱微波科技有限公司 | Power amplifier amplitude and phase consistency debugging device and method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN2692944Y (en) | Circuitboard for wireless communication circuit | |
| CN104104400B (en) | The spaceborne ADS-B Signal reception machine of highly sensitive | |
| US20130043980A1 (en) | Encoded information reading terminal with micro-electromechanical radio frequency front end | |
| US8811542B2 (en) | HDX demodulator | |
| TW589810B (en) | Wireless communication circuit architecture | |
| CN106919880A (en) | Radiofrequency signal audiomonitor | |
| CN101303736A (en) | Multi-protocol ultrahigh frequency reader-writer | |
| CN205354044U (en) | Radiofrequency signal audiomonitor | |
| CN203151484U (en) | Wireless transmitting and receiving circuit | |
| CN207124623U (en) | Wireless signal receiver and system | |
| CN100454328C (en) | Long-range card read head for ID cards in mid frequency and in radio frequency | |
| Keehr | A low-cost software-defined UHF RFID reader with active transmit leakage cancellation | |
| CN208225060U (en) | A kind of detection antenna system for intermediate frequency radio-frequency identification card | |
| CN204408276U (en) | A kind of software radio system upconverter | |
| CN201156578Y (en) | Improved loop antenna apparatus capable of enhancing quality of received signal | |
| CN206178854U (en) | Multifrequency RFID recognition device | |
| CN209046638U (en) | Linear frequency modulation transmitting-receiving subassembly | |
| CN202904590U (en) | Extending device, reading head device and reading head extending system | |
| CN206559337U (en) | A kind of very high frequency(VHF) FM receiver | |
| CN1713515B (en) | Digital medium-frequency discriminator | |
| CN204131510U (en) | A kind of high-stability radio-frequency signal R-T unit | |
| CN216086660U (en) | Portable X-waveband spread-spectrum measurement and control ground test equipment | |
| CN109728829A (en) | A kind of high performance wideband Receiver Module | |
| CN206922737U (en) | The superhet of external orthogonal signalling | |
| CN213817773U (en) | Three-frequency rapid tracking frequency hopping device of medium wave transmitter |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information | ||
| CB02 | Change of applicant information |
Address after: 101300 room 015, building 8, No. 1, Linkong Second Road, Shunyi Park, Zhongguancun Science and Technology Park, Shunyi District, Beijing Applicant after: BEIJING JULI TECHNOLOGY Co.,Ltd. Address before: 102206, B, 504, Xinyuan Science Park, 97 Changping Road, Shahe Town, Beijing, Changping District Applicant before: BEIJING JULI SCIENCE & TECHNOLOGY Co.,Ltd. |
|
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20170704 |