CN101459465A - Local oscillation device supporting multiple frequency band working mode - Google Patents
Local oscillation device supporting multiple frequency band working mode Download PDFInfo
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- CN101459465A CN101459465A CNA2007101250837A CN200710125083A CN101459465A CN 101459465 A CN101459465 A CN 101459465A CN A2007101250837 A CNA2007101250837 A CN A2007101250837A CN 200710125083 A CN200710125083 A CN 200710125083A CN 101459465 A CN101459465 A CN 101459465A
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Abstract
The invention discloses a local oscillator device for supporting a multi-frequency-band working mode, which comprises a phase-locked loop module for outputting phase-locked signals, wherein the local oscillator further comprises a frequency band selection module for outputting the phase-locked signals generated by the phase-locked loop modules in multiple frequency bands. The invention can conduct the frequency band selection output for the phase-locked signals outputted by the phase-locked loop module with a frequency band selection module, and realizes the mini-size and integration of the local oscillator device at the premise of covering a plurality of frequency bands by the output frequency.
Description
Technical field
The present invention relates to a kind of local oscillation device of field of mobile communication, in particular, a kind of local oscillation device of supporting multiple frequency band working mode.
Background technology
Radio-frequency (RF) local oscillator source part adopts the single phase-locked loop road to realize that phase-locked loop is a kind of circuits/modules, and it is used in receiver in communication, and its effect is to handle to the received signal, and from wherein extracting the phase information of certain clock.For the signal that receives, imitated clock signal makes that these two signals are synchronous (perhaps relevant) from certain angle.Owing to (promptly finish and catch the back) under the locking situation, the phase difference value that this imitated clock signal is maintained fixed with respect to the clock signal in the signal that receives.Under the general situation, phase-locked loop divides three parts: phase discriminator, be used for phase demodulation, and promptly judge the clock signal that phase locking unit is exported and the amplitude that differs of the clock in the received signal; Voltage controlled oscillator, the signal that is used for exporting according to phase discriminator comes suitable adjusting phase locking unit, and clock internal output signal frequency or phase place make phase locking unit finish above-mentioned fixed phase difference function; Loop filter is used for the output signal of phase discriminator is carried out filtering and level and smooth, is a low pass filter under most of situations, is used for filtering because the variation of data and the influence of other destabilizing factors to whole module.
Once or in twice up-conversion and the down-conversion transceiver, often adopt and receive and send out each radio-frequency (RF) local oscillator and intermediate frequency local oscillator, existing local oscillation device is general to adopt a local oscillator module to realize a frequency range, support the multiple frequency band working mode local oscillation device must adopt a plurality of local oscillator modules as need, whole like this radio frequency veneer local oscillator part area occupied is bigger, is unfavorable for miniaturization and integrated.
Therefore, also there is defective in prior art, awaits improving and development.
Summary of the invention
The technical problem that the present invention solves provides a kind of local oscillation device of supporting multiple frequency band working mode, local oscillation device by this support multiple frequency band working mode can be realized a plurality of frequency ranges with a local oscillator module, reduce the shared area of whole radio frequency veneer local oscillator part, be beneficial to miniaturization and modularization.
For solving the problems of the technologies described above, the present invention adopts following scheme:
A kind of local oscillation device of supporting multiple frequency band working mode comprises the phase-locked loop module of exporting lockin signal, and wherein, described local oscillation device also comprises a Frequency Band Selection module, is used for the lockin signal multiband output that phase-locked loop module is produced.
Described local oscillation device, wherein, described Frequency Band Selection module comprises: shunt module is used for the lockin signal multichannel output in one fen that phase-locked loop module is produced; With minute acceptance filter of the different frequency range of way corresponding number, be used for beyond each corresponding band of filtering and the spurious signal of other frequency range introducing, obtain each road signal of multiband; Select output module, be used to select to export road signal wherein.
Described local oscillation device, wherein, described each acceptance filter with select to be connected an adjustable attenuator between the output module, be used to adjust described each road acceptance filter output signal level.
Described local oscillation device wherein, connects an amplifier behind the described selection output module, be used to compensate from selecting the output signal level of output module output.
Described local oscillation device, wherein, described phase-locked loop module comprises parametric frequency divider, voltage controlled oscillator, main frequency divider, phase discriminator, charge pump and loop filter; External reference signal is through the parametric frequency divider frequency division, the signal of voltage controlled oscillator output is through the main frequency divider frequency division, this two-way output signal through phase discriminator relatively, producing the error current signal exports through charge pump, produce control voltage through loop filter, the control voltage controlled oscillator produces stable output lockin signal.
Described local oscillation device, wherein, described shunt module is the first radio frequency single pole multiple throw.
Described local oscillation device, wherein, described selection output module is the second radio frequency single pole multiple throw.
Described local oscillation device, wherein, the described first radio frequency single pole multiple throw and the second radio frequency single pole multiple throw adopt with a kind of single pole multiple throw.
Described local oscillation device, wherein, the isolation of the described first radio frequency single pole multiple throw and the second radio frequency single pole multiple throw should be more than or equal to 50dB.
Described local oscillation device, wherein, described phase-locked loop module comprises parametric frequency divider, voltage controlled oscillator, main frequency divider, phase discriminator, charge pump and loop filter; External reference signal is through the parametric frequency divider frequency division, the signal of voltage controlled oscillator output is through the main frequency divider frequency division, the signal of this two routes parametric frequency divider and main frequency divider output through phase discriminator relatively, producing the error current signal exports through charge pump, produce control voltage through loop filter, the control voltage controlled oscillator produces stable output lockin signal.
Compared with prior art, the present invention carries out Frequency Band Selection output with a Frequency Band Selection module to the lockin signal of phase-locked loop module output, can cover at output frequency under the prerequisite of a plurality of frequency ranges and can realize local oscillation device miniaturization and integrated.In addition, of the present invention simple in structure, the reliability height; Implement simply have actual application value in actual applications; With low cost, be a kind of very economical local oscillation device.
Description of drawings
Fig. 1 is a kind of theory diagram of supporting the local oscillation device of multiple frequency band working mode of the present invention.
Fig. 2 is the theory diagram of phase-locked loop module in the local oscillation device of the present invention.
Embodiment
The present invention is described in further detail below in conjunction with embodiment and accompanying drawing.
Fig. 1 is a kind of theory diagram of supporting the local oscillation device of multiple frequency band working mode of the present invention, described local oscillation device comprises phase-locked loop module 101 and Frequency Band Selection module 100, and the lockin signal that phase-locked loop module 101 produces is selected output via Frequency Band Selection module 100 multibands.
Described Frequency Band Selection module 100 comprises:
Shunt module 102, the one fen multichannel of lockin signal that is used for phase-locked loop module 101 is produced is exported, and is output in one minute three tunnel in the present embodiment;
The acceptance filter of different frequency range, its number and shunt module 102 divide way corresponding, the i.e. acceptance filter of three different frequency ranges, be respectively first acceptance filter 103, second acceptance filter 105, the 3rd acceptance filter 107, be used for filtering through every road signal that shunt module 102 is told beyond the corresponding frequency range and the spurious signal introduced of other frequency range, obtain each road signal of multiband;
With the adjustable attenuator of acceptance filter equal number, promptly three adjustable attenuators are respectively first adjustable attenuator 104, second adjustable attenuator 106, the 3rd adjustable attenuator 108; First adjustable attenuator 104 is connected with first acceptance filter 103, is used to adjust first acceptance filter, 103 output signal level; Second adjustable attenuator 106 is connected with second acceptance filter 105, is used to adjust second acceptance filter, 105 output signal level; The 3rd adjustable attenuator 108 is connected with the 3rd acceptance filter 107, is used to adjust the 3rd acceptance filter 107 output signal level;
Select output module 109, be used to select to export each road signal of above-mentioned multiband road signal wherein;
Amplifier 110 is used to compensate from selecting the output signal level of output module output.So just with simple structure, higher reliability has realized the multiband output of local oscillation device.
Described phase-locked loop module 101 theory diagrams are seen Fig. 2, and described phase-locked loop module 101 comprises parametric frequency divider 111, voltage controlled oscillator 112, main frequency divider 113, phase discriminator 114, charge pump 115 and loop filter 116; External reference signal is through parametric frequency divider 111 frequency divisions, the signal of voltage controlled oscillator 112 outputs is through main frequency divider 113 frequency divisions, this two-way output signal through phase discriminator 114 relatively, produce the error current signal through charge pump 115 outputs, produce control voltage through loop filter 116, control voltage controlled oscillator 112 produces stable output lockin signal.Phase-locked loop module 101 also can adopt other phase-locked loop circuit.
Shunt module described in the present embodiment 102 adopts the first radio frequency single pole multiple throw, described selection output module 109 adopts the second radio frequency single pole multiple throw, the described first radio frequency single pole multiple throw and the second radio frequency single pole multiple throw adopt with a kind of single pole multiple throw, the consistency of radio-frequency (RF) switch performance is high more, and the consistency of local oscillation device output level is good more.The isolation of the described first radio frequency single pole multiple throw and the second radio frequency single pole multiple throw should be more than or equal to 50dB, to guarantee the good isolation of different frequency range path in the local oscillation device.
The present invention carries out Frequency Band Selection output with a Frequency Band Selection module to the lockin signal of phase-locked loop module output, can cover at output frequency under the prerequisite of a plurality of frequency ranges and realize local oscillation device miniaturization and integrated.In addition, of the present invention simple in structure, the reliability height; Implement simply have actual application value in actual applications; With low cost, be a kind of very economical local oscillation device.
Should be understood that; the above embodiment that provides is just to explanation of the present invention; and not should be understood to limitation of the present invention; to those skilled in the art; can be improved according to the above description or conversion; and all these improve and conversion all should be disclosed principle and feature, all belong to protection scope of the present invention.
Claims (9)
1, a kind of local oscillation device of supporting multiple frequency band working mode comprises the phase-locked loop module of exporting lockin signal, it is characterized in that, described local oscillation device also comprises the Frequency Band Selection module, is used for the lockin signal multiband output that phase-locked loop module is produced.
2, local oscillation device according to claim 1 is characterized in that, described Frequency Band Selection module comprises: shunt module is used for the lockin signal multichannel output in one fen that phase-locked loop module is produced; With minute acceptance filter of the different frequency range of way corresponding number, be used for beyond each corresponding band of filtering and the spurious signal of other frequency range introducing, obtain each road signal of multiband; Select output module, be used to select to export road signal wherein.
3, local oscillation device according to claim 2 is characterized in that: described each acceptance filter with select to be connected an adjustable attenuator between the output module, be used to adjust described each road acceptance filter output signal level.
4, local oscillation device according to claim 2 is characterized in that: connect an amplifier behind the described selection output module, be used to compensate from selecting the output signal level of output module output.
5, local oscillation device according to claim 1 is characterized in that: described shunt module is the first radio frequency single pole multiple throw.
6, local oscillation device according to claim 5 is characterized in that: described selection output module is the second radio frequency single pole multiple throw.
7, local oscillation device according to claim 6 is characterized in that: the described first radio frequency single pole multiple throw and the second radio frequency single pole multiple throw adopt with a kind of single pole multiple throw.
8, local oscillation device according to claim 6 is characterized in that: the isolation of the described first radio frequency single pole multiple throw and the second radio frequency single pole multiple throw should be more than or equal to 50dB.
9, local oscillation device according to claim 1 is characterized in that: described phase-locked loop module comprises parametric frequency divider, voltage controlled oscillator, main frequency divider, phase discriminator, charge pump and loop filter; External reference signal is through the parametric frequency divider frequency division, the signal of voltage controlled oscillator output is through the main frequency divider frequency division, the signal of this two routes parametric frequency divider and main frequency divider output through phase discriminator relatively, producing the error current signal exports through charge pump, produce control voltage through loop filter, the control voltage controlled oscillator produces stable output lockin signal.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 200710125083 CN101459465B (en) | 2007-12-11 | 2007-12-11 | Local oscillation device supporting multiple frequency band working mode |
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| CN 200710125083 CN101459465B (en) | 2007-12-11 | 2007-12-11 | Local oscillation device supporting multiple frequency band working mode |
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| CN101459465B CN101459465B (en) | 2012-12-05 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102324929A (en) * | 2011-04-22 | 2012-01-18 | 中国科学院上海微系统与信息技术研究所 | Hopping frequency synthesizer for front end of millimeter wave holographic imaging system |
| CN103023494A (en) * | 2012-11-22 | 2013-04-03 | 深圳市森虎科技有限公司 | Method for improving performance of voltage-controlled oscillator, voltage-controlled oscillator, phase-locked loop circuit and application thereof |
| CN104113350A (en) * | 2014-05-06 | 2014-10-22 | 中国电子科技集团公司第四十一研究所 | Eight-channel broadband mobile network signal transmitting module |
| CN106506026A (en) * | 2015-09-03 | 2017-03-15 | 亚德诺半导体集团 | Using tuning information with the apparatus and method of the parameter of self adaptation dynamic modification RF signal links |
| CN107483048A (en) * | 2017-10-10 | 2017-12-15 | 南京冉思电子科技有限公司 | A kind of generation device of multiband local oscillation signal |
| CN110336537A (en) * | 2019-06-21 | 2019-10-15 | 西安天和防务技术股份有限公司 | Multifrequency point control circuit |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100234129B1 (en) * | 1997-06-21 | 1999-12-15 | 윤종용 | Apparatus and method using time division method |
| CN100586047C (en) * | 2006-06-15 | 2010-01-27 | 北京北方烽火科技有限公司 | TD-SCDMA signal generator |
| CN100505582C (en) * | 2006-09-06 | 2009-06-24 | 北京大学 | Ultra-wideband radio-frequency transmission terminal system |
-
2007
- 2007-12-11 CN CN 200710125083 patent/CN101459465B/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102324929A (en) * | 2011-04-22 | 2012-01-18 | 中国科学院上海微系统与信息技术研究所 | Hopping frequency synthesizer for front end of millimeter wave holographic imaging system |
| CN103023494A (en) * | 2012-11-22 | 2013-04-03 | 深圳市森虎科技有限公司 | Method for improving performance of voltage-controlled oscillator, voltage-controlled oscillator, phase-locked loop circuit and application thereof |
| CN104113350A (en) * | 2014-05-06 | 2014-10-22 | 中国电子科技集团公司第四十一研究所 | Eight-channel broadband mobile network signal transmitting module |
| CN106506026A (en) * | 2015-09-03 | 2017-03-15 | 亚德诺半导体集团 | Using tuning information with the apparatus and method of the parameter of self adaptation dynamic modification RF signal links |
| CN107483048A (en) * | 2017-10-10 | 2017-12-15 | 南京冉思电子科技有限公司 | A kind of generation device of multiband local oscillation signal |
| CN110336537A (en) * | 2019-06-21 | 2019-10-15 | 西安天和防务技术股份有限公司 | Multifrequency point control circuit |
| CN110336537B (en) * | 2019-06-21 | 2023-04-07 | 西安天和防务技术股份有限公司 | Multi-frequency point control circuit |
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Effective date of registration: 20141211 Address after: 11, 226500 and 18 sets of Zhenhai dam village, Rugao, Jiangsu, Nantong Patentee after: Rugao Huayi Real Estate Co., Ltd. Address before: 518057 Nanshan District Guangdong high tech Industrial Park, South Road, science and technology, ZTE building, Ministry of Justice Patentee before: ZTE Corporation |
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Effective date of registration: 20170816 Address after: 226500 No. 3, Hong Kong Road, Changjiang Town, Rugao City, Jiangsu, Nantong Patentee after: Rugao Changjiang science and Technology Industry Co Ltd Address before: 11, 226500 and 18 sets of Zhenhai dam village, Rugao, Jiangsu, Nantong Patentee before: Rugao Huayi Real Estate Co., Ltd. |
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