CN205377851U - MR measuring equipment receiving system based on take phase -locked loop local oscillator circuit - Google Patents
MR measuring equipment receiving system based on take phase -locked loop local oscillator circuit Download PDFInfo
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- CN205377851U CN205377851U CN201521016822.5U CN201521016822U CN205377851U CN 205377851 U CN205377851 U CN 205377851U CN 201521016822 U CN201521016822 U CN 201521016822U CN 205377851 U CN205377851 U CN 205377851U
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Abstract
The utility model discloses a MR measuring equipment receiving system based on take phase -locked loop local oscillator circuit, the output of receiver links to each other with the MR measurement information generater, and the output of MR measurement information generater links to each other with the transmitter, the receiver includes channel unit and local oscillator unit, and the local oscillator signal input part of local oscillator unit and intermediate frequency first detector is connected, the local oscillator unit is including crystal oscillator circuit, direct digital frequency synthesizer, phase discriminator, the 3rd low pass filter, voltage controlled oscillator and two frequency multipliers connected in order, and the input that voltage controlled oscillator's output still looped through frequency divider and high pass filter and phase discriminator is connected. The utility model discloses the ultrashort wave receiver has linearity height, dynamic broad, spurious suppression characteristics such as effectual, has improved the degree of accuracy and reliability that MR measured original data. The low pass filter that adds in the local oscillator unit is the high frequency signal that produces of filtering phase discriminator effectively, and high pass filter is the image frequency signal of filtering frequency divider production effectively.
Description
Technical field
This utility model relates to a kind of based on the MR measurement device reception system with phase-locked loop local oscillation circuit.
Background technology
MR(MeasurementReport) measurement report is one of Main Basis of assessment wireless environment quality, MR refers to 470ms on information every 480ms(signaling channel on a traffic channel) send a secondary data, for gsm system, MR is the Main Means that network side obtains terminal wireless information, mainly comprises two parts: upward signal information and downstream signal information.Wherein, downstream signal information is measured by the network terminal and is gathered, and reports network by the MeasurementReport signaling of Um mouth；Upward signal information is measured by the BTS of network side and is gathered, and BTS reports BSC by MR after collecting up-downgoing metrical information.Descending measurement report should comprise: the level intensity of Serving cell, quality, the transmitting power that mobile phone is current, DTX behaviour in service, the signal intensity of six the strongest adjacent areas and BSIC etc.；Out-hole run information should comprise: the up level intensity of mobile phone, quality, the transmitting power that BTS is current, DTX behaviour in service, TA value.
The attainable function of MR includes: (1) coverage evaluating analysis: rendered by uplink and downlink signals intensity distributions, presents the weak blind area of the network coverage, not only objective and accurate, it is possible to save substantial amounts of time and resource, moreover it is possible to effectively find out network coverage problem in time.(2) Network Quality Analysis: under mass data supports, it is possible to complete the quality analysis of up-downgoing wireless network, it is possible to reflect the truth of this area the whole network speech quality.(3) area covered analysis: can find that the situation covering Lai Duiyue district, border of community is analyzed judging intuitively, it is prevented that signal disturbing is caused in other community, affects the speech quality of other community user, effectively optimize the wireless network architecture of this area.(4) network interferences analysis: the network interferences situation according to collecting carries out statistical analysis, for subsequent network adjustment, provides including power contorl parameters and frequency optimization, Neighborhood Optimization, coverage optimization etc. and supports.(5) traffic hot spot regional analysis: the comprehensive of being associated property of index such as traffic density, traffic distribution and resource utilization can be analyzed, thus formulating the accurate planning of capacity website and dilatation website.(6) hidden failure analysis: by MR data analysis, it is possible to search find out network exists hidden failure with carrier wave, provide clear and definite target for the network optimization.
MR measurement device is when measuring cordless communication network, receiver is first utilized to receive signal of communication, complete to forward signal of communication again through transmitter after MR measures, but, tradition MR measurement device reception Dynamic Range is narrow, spurious reduction weak effect, causes that MR measures accuracy and the poor reliability of initial data.
Utility model content
The purpose of this utility model is in that to overcome the deficiencies in the prior art, it is provided that the ultra-short wave receiver that a kind of linearity is high, dynamic range is wider, spurious reduction is effective, improves MR and measures accuracy and the reliability of initial data.
The purpose of this utility model is achieved through the following technical solutions: receive system based on the MR measurement device with phase-locked loop local oscillation circuit, including receiver, MR metrical information maker and transmitter, the outfan of receiver is connected with MR metrical information maker, and the outfan of MR metrical information maker is connected with transmitter；
Described receiver includes Channel Elements and local oscillator unit, Channel Elements includes the amplitude limiter for limiting input signal wave amplitude being sequentially connected with, the dynamic adjusting module of radio frequency for adjusting input signal amplitude, for by signal subsection the preselector suppressing image frequency signal, for amplifying the low-noise amplifier of signal amplitude, for filtering the first low pass filter of image frequency signal, for being mixed the intermediate frequency mixer producing intermediate-freuqncy signal, intermediate-frequency filter for intermediate-freuqncy signal filtering, for the intermediate frequency amplifier that intermediate-freuqncy signal is amplified, intermediate frequency attenuator for intermediate-freuqncy signal amplitude adjustment decay, for amplifying the power amplifier of signal power and for filtering the second low pass filter of high-frequency signal；The signal output part of local oscillator unit is connected with the local oscillation signal input of intermediate frequency mixer；
Described local oscillator unit includes the crystal oscillating circuit, Direct Digital Frequency Synthesizers, phase discriminator, the 3rd low pass filter, voltage controlled oscillator and the varactor doubler that are sequentially connected with, and the outfan of voltage controlled oscillator also passes sequentially through frequency divider and is connected with the input of phase discriminator with high pass filter.
The dynamic adjusting module of described radio frequency is made up of attenuator and amplifier, and attenuator selects two switches to be connected with the outfan of amplitude limiter with amplifier by one.
Described Direct Digital Frequency Synthesizers adopts AD9910, and phase discriminator adopts HMC440, and frequency divider adopts AD9858.
Described Channel Elements and local oscillator unit are divided in independent cavity.
The beneficial effects of the utility model are:
(1) can stablizing the ultrashort wave signals of reception 30～3000MHz, signal passes through repeatedly frequency conversion, exports on the intermediate frequency of 70MHz, and the amplitude of intermediate frequency can stable output in the scope required.
(2) Channel Elements and local oscillator unit are divided in independent cavity and further avoid signal cross-talk.
(3) this ultra-short wave receiver has the features such as linearity height, dynamic range is wider, spurious reduction is effective, improves MR and measures accuracy and the reliability of initial data.
(4) low pass filter set up in local oscillator unit can effectively filter out the high-frequency signal that phase discriminator produces, and high pass filter can effectively filter out the image frequency signal that frequency divider produces.
(5) adopt the carrier frequency that voltage controlled oscillator is exported by phase-locked Frequency Synthesis Technique Controlled to carry out accurate lock, reach higher stability and accuracy.
Accompanying drawing explanation
Fig. 1 is this utility model structural representation；
Fig. 2 is this utility model receiver circuit structural representation；
Fig. 3 is this utility model local oscillator cellular construction schematic diagram.
Detailed description of the invention
Below in conjunction with accompanying drawing, the technical solution of the utility model is described in further detail, but protection domain of the present utility model is not limited to the following stated.
As shown in Figure 1, system is received based on the MR measurement device with phase-locked loop local oscillation circuit, including receiver, MR metrical information maker and transmitter, the outfan of receiver is connected with MR metrical information maker, and the outfan of MR metrical information maker is connected with transmitter.
As shown in Figure 2, receiver includes Channel Elements and local oscillator unit, Channel Elements includes the amplitude limiter for limiting input signal wave amplitude being sequentially connected with, the dynamic adjusting module of radio frequency for adjusting input signal amplitude, the dynamic adjusting module of described radio frequency is made up of attenuator and amplifier, and attenuator selects two switches to be connected with the outfan of amplitude limiter with amplifier by one.For by signal subsection the preselector suppressing image frequency signal, for amplifying the low-noise amplifier of signal amplitude, for filtering the first low pass filter of image frequency signal, for being mixed the intermediate frequency mixer producing intermediate-freuqncy signal, intermediate-frequency filter for intermediate-freuqncy signal filtering, for the intermediate frequency amplifier that intermediate-freuqncy signal is amplified, for the intermediate frequency attenuator of intermediate-freuqncy signal amplitude adjustment decay, for amplifying the power amplifier of signal power and for filtering the second low pass filter of high-frequency signal；The signal output part of local oscillator unit is connected with the local oscillation signal input of intermediate frequency mixer；
As shown in Figure 3, described local oscillator unit includes the crystal oscillating circuit, Direct Digital Frequency Synthesizers AD9910, phase discriminator HMC440, the 3rd low pass filter, voltage controlled oscillator and the varactor doubler that are sequentially connected with, and the outfan of voltage controlled oscillator also passes sequentially through frequency divider AD9858 and is connected with the input of phase discriminator with high pass filter.
Described Channel Elements and local oscillator unit are divided in independent cavity.
The above is only preferred implementation of the present utility model, it is to be understood that this utility model is not limited to form disclosed herein, it is not to be taken as the eliminating to other embodiments, and can be used for other combinations various, amendment and environment, and in contemplated scope described herein, can be modified by the technology of above-mentioned instruction or association area or knowledge.And the change that those skilled in the art carry out and change are without departing from spirit and scope of the present utility model, then all should in the protection domain of this utility model claims.
Claims (4)
1. receive system based on the MR measurement device with phase-locked loop local oscillation circuit, it is characterized in that: include receiver, MR metrical information maker and transmitter, the outfan of receiver is connected with MR metrical information maker, and the outfan of MR metrical information maker is connected with transmitter；
Described receiver includes Channel Elements and local oscillator unit, Channel Elements includes the amplitude limiter for limiting input signal wave amplitude being sequentially connected with, the dynamic adjusting module of radio frequency for adjusting input signal amplitude, for by signal subsection the preselector suppressing image frequency signal, for amplifying the low-noise amplifier of signal amplitude, for filtering the first low pass filter of image frequency signal, for being mixed the intermediate frequency mixer producing intermediate-freuqncy signal, intermediate-frequency filter for intermediate-freuqncy signal filtering, for the intermediate frequency amplifier that intermediate-freuqncy signal is amplified, intermediate frequency attenuator for intermediate-freuqncy signal amplitude adjustment decay, for amplifying the power amplifier of signal power and for filtering the second low pass filter of high-frequency signal；The signal output part of local oscillator unit is connected with the local oscillation signal input of intermediate frequency mixer；
Described local oscillator unit includes the crystal oscillating circuit, Direct Digital Frequency Synthesizers, phase discriminator, the 3rd low pass filter, voltage controlled oscillator and the varactor doubler that are sequentially connected with, and the outfan of voltage controlled oscillator also passes sequentially through frequency divider and is connected with the input of phase discriminator with high pass filter.
2. according to claim 1 based on the MR measurement device reception system with phase-locked loop local oscillation circuit, it is characterized in that: the dynamic adjusting module of described radio frequency is made up of attenuator and amplifier, attenuator selects two switches to be connected with the outfan of amplitude limiter with amplifier by one.
3. according to claim 1 based on the MR measurement device reception system with phase-locked loop local oscillation circuit, it is characterised in that: described Direct Digital Frequency Synthesizers adopts AD9910, and phase discriminator adopts HMC440, and frequency divider adopts AD9858.
4. according to claim 1 based on the MR measurement device reception system with phase-locked loop local oscillation circuit, it is characterised in that: described Channel Elements and local oscillator unit are divided in independent cavity.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201521016822.5U CN205377851U (en) | 2015-12-09 | 2015-12-09 | MR measuring equipment receiving system based on take phase -locked loop local oscillator circuit |
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| CN201521016822.5U CN205377851U (en) | 2015-12-09 | 2015-12-09 | MR measuring equipment receiving system based on take phase -locked loop local oscillator circuit |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107800448A (en) * | 2017-11-28 | 2018-03-13 | 天津七六四通信导航技术有限公司 | Medium wave transmitter apparatus for frequency synthesizing |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107800448A (en) * | 2017-11-28 | 2018-03-13 | 天津七六四通信导航技术有限公司 | Medium wave transmitter apparatus for frequency synthesizing |
| CN107800448B (en) * | 2017-11-28 | 2023-06-16 | 天津七六四通信导航技术有限公司 | Medium wave transmitter frequency synthesizer |
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