CN204180018U - A kind of ultra broadband frequency converter - Google Patents
A kind of ultra broadband frequency converter Download PDFInfo
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- CN204180018U CN204180018U CN201420633601.1U CN201420633601U CN204180018U CN 204180018 U CN204180018 U CN 204180018U CN 201420633601 U CN201420633601 U CN 201420633601U CN 204180018 U CN204180018 U CN 204180018U
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Abstract
The utility model discloses a kind of ultra broadband frequency converter, be made up of control unit, outer clock circuit, the first converter unit, the second converter unit and the 3rd converter unit; The respective input of described first converter unit connects the output of IF input signals and described outer clock circuit respectively, and its corresponding output end connects the respective input of described second converter unit and the 3rd converter unit respectively; The respective input of described 3rd converter unit connects the output of described second converter unit, and its output is as the output of described ultra broadband frequency converter; The corresponding output end of described control unit connects the respective input of described first converter unit, the second converter unit and the 3rd converter unit respectively.The utility model achieves by three frequency conversions ultrabroad band 140MHz intermediate frequency being moved 30MHz to 3000MHz, and achieves the little stepping of 1Hz, can be applied to signal of communication simulator, carry out maintenance test to communication equipment.
Description
Technical field
The utility model relates to a kind of frequency converter, and especially a kind of ultra broadband frequency converter, belongs to communication technical field.
Background technology
In today of communication technology fast development, frequency converter obtains to be applied more and more widely.Frequency converter based on conventional art cannot adapt to the development of the communication technology.
Completely based on the frequency converter of direct digital frequency synthesis technology, the restriction being limited to digital to analog converter aspect switching time in the restriction of reference clock highest frequency and Digital Frequency Synthesize cannot be applied to the frequency conversion application of upper frequency.
Completely based on the frequency converter of PHASE-LOCKED LOOP PLL TECHNIQUE, the existing phase-locked loop chip data looked into cannot realize the little stepping of 1Hz and export the frequency variation signal of ultrabroad band.
Utility model content
The technical problems to be solved in the utility model is to provide a kind of ultra broadband frequency converter of little stepping.
Technical solution adopted in the utility model is:
A kind of ultra broadband frequency converter, is made up of control unit, outer clock circuit, the first converter unit, the second converter unit and the 3rd converter unit; The respective input of described first converter unit connects the output of IF input signals and described outer clock circuit respectively, and its corresponding output end connects the respective input of described second converter unit and the 3rd converter unit respectively; The respective input of described 3rd converter unit connects the output of described second converter unit, and its output is as the output of described ultra broadband frequency converter; The corresponding output end of described control unit connects the respective input of described first converter unit, the second converter unit and the 3rd converter unit respectively.
Described first converter unit is made up of internal reference clock circuit, microwave switch, the first power splitter, the first phase-locked loop, the first filter, the first voltage controlled oscillator, the first amplifier, the second filter, the first frequency mixer, the 3rd filter and the second amplifier; The respective input of described microwave switch connects the output of described internal reference clock circuit and the output of described outer clock circuit respectively, and it exports the input of the first power splitter described in termination; The corresponding output end of described first power splitter connects the respective input of described first phase-locked loop, the second converter unit and the 3rd converter unit respectively; The respective input of described first phase-locked loop connects the corresponding output end of described control unit, and it exports the input of the first filter described in termination; The output of the first filter described in the input termination of described first voltage controlled oscillator, its output connects the respective input of described first amplifier and the first voltage controlled oscillator respectively; The respective input of described first frequency mixer connects the output of described first amplifier and the second filter respectively, and it exports the input of the 3rd filter described in termination; The output of the 3rd filter described in the input termination of described second amplifier, it exports the respective input of the second converter unit described in termination; The input of described second filter is as the input of described ultra broadband frequency converter.
Described second converter unit is made up of octonary device, the 4th filter, DDS, the second phase-locked loop, the 5th filter, the second voltage controlled oscillator, the first four-divider, the 6th filter, the 3rd amplifier, the first isolator, the second frequency mixer, the second isolator, the 7th filter, the 4th amplifier, the 5th amplifier, the 3rd isolator; The corresponding output end of the first converter unit described in the input termination of described octonary device, it exports the input of the 4th filter described in termination.DDS respective input described in the output termination of described 4th filter; The respective input of described DDS connects the corresponding output end of described control unit.The respective input of described second phase-locked loop connects the corresponding output end of described first four-divider, DDS and control unit respectively, and it exports the input of the 5th filter described in termination; The output of the 5th filter described in the input termination of described second voltage controlled oscillator, its output connects the input of described first four-divider and the 6th filter respectively; The output of the 6th filter described in the input termination of described 3rd amplifier, it exports the input of the first isolator described in termination; The respective input of described second frequency mixer connects the output of described first isolator and the first converter unit respectively, and it exports the input of the second isolator described in termination; Described second isolator, the 7th filter, the 4th amplifier, the 5th amplifier, the 3rd isolator cascade successively; The respective input of the 3rd converter unit described in the output termination of described 3rd isolator.
Described 3rd converter unit is made up of the 3rd phase-locked loop, the 8th filter, the 3rd voltage controlled oscillator, the second four-divider, the 9th filter, the 6th amplifier, the 3rd isolator, the 4th isolator, three-mixer, the tenth filter, the 7th amplifier, numerical-control attenuator, the 8th amplifier and bank of filters; The respective input of described 3rd phase-locked loop distinguishes the corresponding output end of described second converter unit, control unit, the second four-divider, and it exports the input of the 8th filter described in termination; The output of the 8th filter described in the input termination of described 3rd voltage controlled oscillator, its output connects the input of described second four-divider and the 9th filter respectively; The output of the 9th filter described in the input termination of described 6th amplifier, it exports the input of the 3rd isolator described in termination; The respective input of described three-mixer connects the output of described 3rd isolator and the 4th isolator respectively, and it exports the input of the tenth filter described in termination; The respective input of the second converter unit described in the input termination of the 4th isolator; The output of the tenth filter described in the input termination of described 7th amplifier; The respective input of described numerical-control attenuator connects the output of described control unit and the 7th amplifier respectively, and it exports the input of the 8th amplifier described in termination; The respective input of described bank of filters connects the output of described control unit and the 8th amplifier respectively, and its output is as the output of described ultra broadband frequency converter.
The beneficial effect adopting technique scheme to produce is:
The utility model achieves by three frequency conversions ultrabroad band 140MHz intermediate frequency being moved 30MHz to 3000MHz, and achieves the little stepping of 1Hz, can be applied to signal of communication simulator, carry out maintenance test to communication equipment.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
Fig. 1 is theory diagram of the present utility model;
Fig. 2 is the theory diagram of the first converter unit in the utility model;
Fig. 3 is the theory diagram of the second converter unit in the utility model;
Fig. 4 is the theory diagram of the 3rd converter unit in the utility model; .
Embodiment
As shown in Figure 1, a kind of ultra broadband frequency converter, is made up of control unit, outer clock circuit, the first converter unit, the second converter unit and the 3rd converter unit; The respective input of described first converter unit connects the output of IF input signals and described outer clock circuit respectively, and its corresponding output end connects the respective input of described second converter unit and the 3rd converter unit respectively; The respective input of described 3rd converter unit connects the output of described second converter unit, and its output is as the output of described ultra broadband frequency converter; The corresponding output end of described control unit connects the respective input of described first converter unit, the second converter unit and the 3rd converter unit respectively.
As shown in Figure 2, described first converter unit is made up of internal reference clock circuit, microwave switch, the first power splitter, the first phase-locked loop, the first filter, the first voltage controlled oscillator, the first amplifier, the second filter, the first frequency mixer, the 3rd filter and the second amplifier; The respective input of described microwave switch connects the output of described internal reference clock circuit and the output of described outer clock circuit respectively, and it exports the input of the first power splitter described in termination; The corresponding output end of described first power splitter connects the respective input of described first phase-locked loop, the second converter unit and the 3rd converter unit respectively; The respective input of described first phase-locked loop connects the corresponding output end of described control unit, and it exports the input of the first filter described in termination; The output of the first filter described in the input termination of described first voltage controlled oscillator, its output connects the respective input of described first amplifier and the first voltage controlled oscillator respectively; The respective input of described first frequency mixer connects the output of described first amplifier and the second filter respectively, and it exports the input of the 3rd filter described in termination; The output of the 3rd filter described in the input termination of described second amplifier, it exports the respective input of the second converter unit described in termination; The input of described second filter is as the input of described ultra broadband frequency converter.
As shown in Figure 3, described second converter unit is made up of octonary device, the 4th filter, DDS, the second phase-locked loop, the 5th filter, the second voltage controlled oscillator, the first four-divider, the 6th filter, the 3rd amplifier, the first isolator, the second frequency mixer, the second isolator, the 7th filter, the 4th amplifier, the 5th amplifier, the 3rd isolator; The corresponding output end of the first converter unit described in the input termination of described octonary device, it exports the input of the 4th filter described in termination.DDS respective input described in the output termination of described 4th filter; The respective input of described DDS connects the corresponding output end of described control unit.The respective input of described second phase-locked loop connects the corresponding output end of described first four-divider, DDS and control unit respectively, and it exports the input of the 5th filter described in termination; The output of the 5th filter described in the input termination of described second voltage controlled oscillator, its output connects the input of described first four-divider and the 6th filter respectively; The output of the 6th filter described in the input termination of described 3rd amplifier, it exports the input of the first isolator described in termination; The respective input of described second frequency mixer connects the output of described first isolator and the first converter unit respectively, and it exports the input of the second isolator described in termination; Described 3rd isolator, the 7th filter, the 4th amplifier, the 5th amplifier, the 3rd isolator cascade successively; The respective input of the 3rd converter unit described in the output termination of described 3rd isolator.
As shown in Figure 4, described 3rd converter unit is made up of the 3rd phase-locked loop, the 8th filter, the 3rd voltage controlled oscillator, the second four-divider, the 9th filter, the 6th amplifier, the 3rd isolator, the 4th isolator, three-mixer, the tenth filter, the 7th amplifier, numerical-control attenuator, the 8th amplifier and bank of filters; The respective input of described 3rd phase-locked loop distinguishes the corresponding output end of described second converter unit, control unit, the second four-divider, and it exports the input of the 8th filter described in termination; The output of the 8th filter described in the input termination of described 3rd voltage controlled oscillator, its output connects the input of described second four-divider and the 9th filter respectively; The output of the 9th filter described in the input termination of described 6th amplifier, it exports the input of the second isolator described in termination; The respective input of described three-mixer connects the output of described 3rd isolator and the 4th isolator respectively, and it exports the input of the tenth filter described in termination; The respective input of the second converter unit described in the input termination of the 4th isolator; The output of the tenth filter described in the input termination of described 7th amplifier; The respective input of described numerical-control attenuator connects the output of described control unit and the 7th amplifier respectively, and it exports the input of the 8th amplifier described in termination; The respective input of described bank of filters connects the output of described control unit and the 8th amplifier respectively, and its output is as the output of described ultra broadband frequency converter.
In the present embodiment, be input as 140MHz intermediate-freuqncy signal.First converter unit by 140MHz intermediate-freuqncy signal by moving 950MHz after mixing and filtering.Second converter unit and the 100MHz reference clock needed for the 3rd converter unit are provided simultaneously.First converter unit produces fixing 1090MHz local oscillation signal by the first phase-locked loop, carries out through the first frequency mixer and 140MHz intermediate-freuqncy signal the mixer output signal that mixing produces 1090 ± 140MHz.Use the IF input signals that band pass filter selects 950MHz signal to carry out as the second converter unit after amplification filtering from mixed frequency signal afterwards.The 950MHz that second converter unit chief commander first time frequency conversion exports moves 8450 ± 20MHz through frequency mixing technique, 1Hz stepping, realizes second time frequency conversion.Second frequency variation signal is exported to the 3rd converter unit simultaneously and carry out mixing.Second converter unit uses DDS and phase-locked Frequency Synthesis Technique Controlled to realize little stepping narrow-band local oscillation signal.Final output frequency control DDS as required exports little stairstep signal, and the frequency dividing ratio of the second phase-locked loop is fixed, and carries out to the output signal of DDS 8450 ± 20MHz signal output that frequency multiplication realizes 1Hz stepping.
The little stepping narrow-band local oscillation of 8450 ± 20MHz that 3rd converter unit chief commander second converter unit exports moves the ultrabroad band of 30-3000MHz by frequency mixing technique, realize third time frequency conversion.The local oscillator frequency of utilization synthetic technology of the 3rd converter unit realizes the large stepping local oscillation signal of 40MHz stepping.By controlling the 3rd phase-locked loop, realize 8480-11440MHz, the local oscillation signal of 40MHz stepping exports.Carry out mixing with the output signal of the second frequency unit after local oscillation signal amplifies after filtering, realize 30MHz-3000MHz, 1Hz stairstep signal exports.
The frequency conversion of 140MHz IF input signals is that the radiofrequency signal of 30MHz to 3000MHz, 1Hz stepping exports by the present embodiment, achieves the frequency converter of a kind of ultra broadband, little stepping.
Claims (4)
1. a ultra broadband frequency converter, is characterized in that: be made up of control unit, outer clock circuit, the first converter unit, the second converter unit and the 3rd converter unit; The respective input of described first converter unit connects the output of IF input signals and described outer clock circuit respectively, and its corresponding output end connects the respective input of described second converter unit and the 3rd converter unit respectively; The respective input of described 3rd converter unit connects the output of described second converter unit, and its output is as the output of described ultra broadband frequency converter; The corresponding output end of described control unit connects the respective input of described first converter unit, the second converter unit and the 3rd converter unit respectively.
2. ultra broadband frequency converter according to claim 1, is characterized in that described first converter unit is made up of internal reference clock circuit, microwave switch, the first power splitter, the first phase-locked loop, the first filter, the first voltage controlled oscillator, the first amplifier, the second filter, the first frequency mixer, the 3rd filter and the second amplifier; The respective input of described microwave switch connects the output of described internal reference clock circuit and the output of described outer clock circuit respectively, and it exports the input of the first power splitter described in termination; The corresponding output end of described first power splitter connects the respective input of described first phase-locked loop, the second converter unit and the 3rd converter unit respectively; The respective input of described first phase-locked loop connects the corresponding output end of described control unit, and it exports the input of the first filter described in termination; The output of the first filter described in the input termination of described first voltage controlled oscillator, its output connects the respective input of described first amplifier and the first voltage controlled oscillator respectively; The respective input of described first frequency mixer connects the output of described first amplifier and the second filter respectively, and it exports the input of the 3rd filter described in termination; The output of the 3rd filter described in the input termination of described second amplifier, it exports the respective input of the second converter unit described in termination; The input of described second filter is as the input of described ultra broadband frequency converter.
3. ultra broadband frequency converter according to claim 1, is characterized in that described second converter unit is made up of octonary device, the 4th filter, DDS, the second phase-locked loop, the 5th filter, the second voltage controlled oscillator, the first four-divider, the 6th filter, the 3rd amplifier, the first isolator, the second frequency mixer, the second isolator, the 7th filter, the 4th amplifier, the 5th amplifier, the 3rd isolator; The corresponding output end of the first converter unit described in the input termination of described octonary device, it exports the input of the 4th filter described in termination;
DDS respective input described in the output termination of described 4th filter; The respective input of described DDS connects the corresponding output end of described control unit;
The respective input of described second phase-locked loop connects the corresponding output end of described first four-divider, DDS and control unit respectively, and it exports the input of the 5th filter described in termination; The output of the 5th filter described in the input termination of described second voltage controlled oscillator, its output connects the input of described first four-divider and the 6th filter respectively; The output of the 6th filter described in the input termination of described 3rd amplifier, it exports the input of the first isolator described in termination; The respective input of described second frequency mixer connects the output of described first isolator and the first converter unit respectively, and it exports the input of the second isolator described in termination; Described second isolator, the 7th filter, the 4th amplifier, the 5th amplifier, the 3rd isolator cascade successively; The respective input of the 3rd converter unit described in the output termination of described 3rd isolator.
4. ultra broadband frequency converter according to claim 1, is characterized in that described 3rd converter unit is made up of the 3rd phase-locked loop, the 8th filter, the 3rd voltage controlled oscillator, the second four-divider, the 9th filter, the 6th amplifier, the 3rd isolator, the 4th isolator, three-mixer, the tenth filter, the 7th amplifier, numerical-control attenuator, the 8th amplifier and bank of filters; The respective input of described 3rd phase-locked loop distinguishes the corresponding output end of described second converter unit, control unit, the second four-divider, and it exports the input of the 8th filter described in termination; The output of the 8th filter described in the input termination of described 3rd voltage controlled oscillator, its output connects the input of described second four-divider and the 9th filter respectively; The output of the 9th filter described in the input termination of described 6th amplifier, it exports the input of the 3rd isolator described in termination; The respective input of described three-mixer connects the output of described 3rd isolator and the 4th isolator respectively, and it exports the input of the tenth filter described in termination; The respective input of the second converter unit described in the input termination of the 4th isolator; The output of the tenth filter described in the input termination of described 7th amplifier; The respective input of described numerical-control attenuator connects the output of described control unit and the 7th amplifier respectively, and it exports the input of the 8th amplifier described in termination; The respective input of described bank of filters connects the output of described control unit and the 8th amplifier respectively, and its output is as the output of described ultra broadband frequency converter.
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| CN201420633601.1U CN204180018U (en) | 2014-10-29 | 2014-10-29 | A kind of ultra broadband frequency converter |
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| CN201420633601.1U CN204180018U (en) | 2014-10-29 | 2014-10-29 | A kind of ultra broadband frequency converter |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106788270A (en) * | 2017-01-20 | 2017-05-31 | 成都瑞迪威科技有限公司 | Ultra wide band multichannel receives frequency conversion component |
| CN112383304A (en) * | 2020-10-13 | 2021-02-19 | 华南理工大学 | Charge pump phase-locked loop based on unipolar thin film transistor, chip and method |
-
2014
- 2014-10-29 CN CN201420633601.1U patent/CN204180018U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106788270A (en) * | 2017-01-20 | 2017-05-31 | 成都瑞迪威科技有限公司 | Ultra wide band multichannel receives frequency conversion component |
| CN112383304A (en) * | 2020-10-13 | 2021-02-19 | 华南理工大学 | Charge pump phase-locked loop based on unipolar thin film transistor, chip and method |
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