CN205105194U - A radio frequency local oscillator circuit for radio general measuring instrument - Google Patents
A radio frequency local oscillator circuit for radio general measuring instrument Download PDFInfo
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- CN205105194U CN205105194U CN201520901356.2U CN201520901356U CN205105194U CN 205105194 U CN205105194 U CN 205105194U CN 201520901356 U CN201520901356 U CN 201520901356U CN 205105194 U CN205105194 U CN 205105194U
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- frequency
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- local oscillator
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Abstract
The utility model discloses a radio frequency local oscillator circuit for radio general measuring instrument, including power supply handle module, control module, crystal oscillator frequency module, some frequency synthesis module and wide band generation module, crystal oscillator frequency module respectively with power supply handle module, control module, some synthesis module, wide band generation module are frequently connected, the power supply handle module is used for providing the power for radio frequency local oscillator circuit, control module is used for control radio frequency local oscillator circuit to produce suitable local oscillator signal, crystal oscillator frequency module is used for producing benchmark reference signal, point synthesis module frequently is used for synthetic signal frequently and output, wide band generation module is used for generating wide band signal and output. This circuit can provide multiple inside local oscillator signal for handheld radio comprehensive tester to make comprehensive tester can realize the measurement of multiple functions simultaneously.
Description
Technical field
The utility model relates to reception and the transmission of radio communication, particularly a kind of radio-frequency (RF) local oscillator circuit for radio general measuring instrument.
Background technology
Adopt single test at communicator field test instrument at present, an instrument is only measured a few functions, and can not realize the measurement of several functions, therefore its radio-frequency (RF) local oscillator circuit adopted also can only realize a kind of output of frequency mostly.
Utility model content
The purpose of this utility model is for a kind of held radio comprehensive tester provides the radio circuit of multiple inner local oscillation signal, thus makes comprehensive tester can realize the measurement of several functions simultaneously.
In order to realize above-mentioned utility model object, the utility model provides following technical scheme:
For a radio-frequency (RF) local oscillator circuit for radio general measuring instrument, comprise power supply processing module, control module, crystal oscillation fractional frequency module, some synthesis module and wideband generation module frequently; Frequently synthesis module, wideband generation module are connected described crystal oscillation fractional frequency module with described power supply processing module, control module, point respectively; Described power supply processing module is used for providing power supply for radio-frequency (RF) local oscillator circuit; Described control module produces suitable local oscillation signal for controlling radio-frequency (RF) local oscillator circuit; Described crystal oscillation fractional frequency module is for generation of reference signal; Described frequently synthesis module is for the synthesis of point-frequency signal and export; Described wideband generation module is for generating broadband signal and exporting.
Further, described crystal oscillation fractional frequency module comprises the DAC tuning voltage module, crystal oscillator and and connect two clock buffer circuits that connect successively.
Further, described crystal oscillator produces 80MHz reference signal.
Further, described synthesis module frequently comprises 1520MHz spot-frequency local oscillation output circuit and 1600MHz spot-frequency local oscillation output circuit.
Further, described 1520MHz spot-frequency local oscillation output circuit comprises first frequency synthesis chip, the first passive ring filter circuit, the first voltage controlled oscillator, the first power splitter, the first low pass filter, the second low pass filter, the first amplifier; Wherein, first frequency synthesis chip and described crystal oscillation fractional frequency model calling also receive reference signal, described first frequency synthesis chip also with described first passive ring filter circuit, the first voltage controlled oscillator, the end to end composition phase-locked loop of the first power splitter; Described first power splitter also connects to form output circuit with described first low pass filter, the second low pass filter, the first amplifier successively.
Further, described 1600MHz spot-frequency local oscillation output circuit comprises second frequency synthesis chip, the second passive ring filter circuit, the second voltage controlled oscillator, the second power splitter, the 3rd low pass filter, the second amplifier; Wherein, second frequency synthesis chip and described crystal oscillation fractional frequency model calling also receive reference signal, described second frequency synthesis chip also with described second passive ring filter circuit, the second voltage controlled oscillator, the end to end composition phase-locked loop of the second power splitter; Described second power splitter also connects to form output circuit with described 3rd low pass filter, the second amplifier successively.
Further, described wideband generation module comprises 1691MHz-2991MHz wideband local oscillator output circuit and 1690.7MHz-2990.7MHz wideband local oscillator output circuit.
Further, described 1691MHz-2991MHz wideband local oscillator output circuit comprises the 3rd frequency synthesis chip, the 3rd passive ring filter circuit, the 4th low pass filter, the 3rd amplifier and π type attenuation network and a high-pass filtering circuit; Wherein, described 3rd frequency synthesis chip and described crystal oscillation fractional frequency model calling also receive reference signal, and described 3rd frequency synthesis chip also forms phase-locked loop circuit with described 3rd passive filter circuit; Meanwhile, described 3rd frequency synthesis chip is also connected with described 4th low pass filter, described 3rd amplifier and a described π type attenuation network and high-pass filtering circuit and exports 1691MHz-2991MHz wideband local oscillation signal successively.
Further, described 1690.7MHz-2990.7MHz wideband local oscillator output circuit comprises the 4th frequency synthesis chip, the 4th passive ring filter circuit, the 5th low pass filter, the 4th amplifier and the 2nd π type attenuation network and high-pass filtering circuit; Wherein, described 4th frequency synthesis chip and described crystal oscillation fractional frequency model calling also receive reference signal, and described 4th frequency synthesis chip also forms phase-locked loop circuit with described 4th passive filter circuit; Meanwhile, described 4th frequency synthesis chip is also connected with described 5th low pass filter, described 4th amplifier and described 2nd π type attenuation network and high-pass filtering circuit and exports 1690.7MHz-2990.7MHz wideband local oscillation signal successively.
Compared with prior art, the beneficial effects of the utility model: for held radio comprehensive tester provides multiple inner local oscillation signal, thus make comprehensive tester can realize the measurement of several functions simultaneously.
Accompanying drawing illustrates:
The radio-frequency (RF) local oscillator circuit structure block diagram that Fig. 1 provides for the utility model.
Fig. 2 is crystal oscillation fractional frequency modular structure schematic diagram in the utility model.
Fig. 3 is 1520MHz spot-frequency local oscillation output circuit structure block diagram in the utility model.
Fig. 4 is 1600MHz spot-frequency local oscillation output circuit structure block diagram in the utility model.
Fig. 5 is the utility model 1691MHz-2991MHz wideband local oscillator output circuit and 1690.7MHz-2990.7MHz wideband local oscillator output circuit structure block diagram.
Fig. 6 is DAC tuning voltage module circuit diagram in crystal oscillation fractional frequency module in the utility model.
Fig. 7 is first, second passive ring filter circuit circuit diagram in the utility model.
Fig. 8 is the 3rd, the 4th passive ring filter circuit circuit diagram in the utility model.
Fig. 9 is π type attenuation network and high-pass filtering circuit circuit diagram in the utility model.
Figure 10 is crystal oscillator and clock buffer circuit circuit diagram.
Figure 11 is low-pass filter circuit circuit diagram in crystal oscillation fractional frequency module.
Embodiment
Below in conjunction with test example and embodiment, the utility model is described in further detail.But this should be interpreted as that the scope of the above-mentioned theme of the utility model is only limitted to following embodiment, all technology realized based on the utility model content all belong to scope of the present utility model.
Embodiment 1: as shown in Figure 1, the present embodiment provides a kind of radio-frequency (RF) local oscillator circuit for radio general measuring instrument, comprises power supply processing module 2, control module 3(and specifically adopts piece of CPLD chip XC95144XL-10TQ100C), crystal oscillation fractional frequency module 1, point frequently synthesis module 4 and wideband generation module 5; Frequently synthesis module 4, wideband generation module 5 are connected described crystal oscillation fractional frequency module 1 with described power supply processing module 2, control module 3, point respectively; Described power supply processing module 2 is for providing power supply for radio-frequency (RF) local oscillator circuit; Described control module 3 produces suitable local oscillation signal for controlling radio-frequency (RF) local oscillator circuit; Described crystal oscillation fractional frequency module 1 is for generation of reference signal; Described frequently synthesis module 4 is for the synthesis of point-frequency signal and export; Described wideband generation module 5 is for generating broadband signal and exporting; Wherein, as shown in Figure 10, output port a1, the output port a2 of shown clock buffer circuit, output port a3, output port a4 are that 4 roads local oscillator generation circuits export phase demodulation reference signal (4 road local oscillator generation circuits refer to 1520MHz spot-frequency local oscillation output circuit, 1600MHz spot-frequency local oscillation output circuit, 1691MHz-2991MHz wideband local oscillator output circuit and 1690.7MHz-2990.7MHz wideband local oscillator output circuit); Output port c is that general measuring instrument radio-frequency module frequency mixer exports local oscillation signal; Output port b provides reference signal for general measuring instrument signal processing module.
Further, the every road of described clock buffer circuit exports and is provided with a low-pass filter circuit as shown in figure 11.
Further, as shown in Figure 2, described crystal oscillation fractional frequency module 1 comprise connect successively DAC tuning voltage module 11, crystal oscillator 12 and and connect two PCI-X clock buffer circuits, as shown in Figure 6, wherein V is voltage output end mouth to described DAC tuning voltage module 11 circuit diagram, described crystal oscillator 12 produces 80MHz frequency reference, entered and the input end of clock of connect two PCI-X clock buffer circuits by a reverse swing door circuit, described two PCI-X clock buffer circuits export eight road 80MHz reference signals, through the low pass filter filtering of 80MHz, wherein four road signals are supplied to 4 local oscillator generation circuits and (refer to 1520MHz spot-frequency local oscillation output circuit 41, 1600MHz spot-frequency local oscillation output circuit 42, 1691MHz-2991MHz wideband local oscillator output circuit 51 and 1690.7MHz-2990.7MHz wideband local oscillator output circuit 52) as phase demodulation reference signal, two-way is combined to be delivered in the frequency mixer of rf board as local oscillation signal, one tunnel is supplied to signal-processing board as reference signal.
Further, described crystal oscillator 12 produces 80MHz reference signal.
Further, described synthesis module 4 frequently comprises 1520MHz spot-frequency local oscillation output circuit 41 and 1600MHz spot-frequency local oscillation output circuit 42.
Further, as shown in Figure 3, described 1520MHz spot-frequency local oscillation output circuit 41 comprises first frequency synthesis chip 411(and specifically adopts ADF4112), the first passive ring filter circuit 412, first voltage controlled oscillator 413, first power splitter 414, first low pass filter 415, second low pass filter 416, first amplifier 417; Wherein, first frequency synthesis chip 411 is connected with described crystal oscillation fractional frequency module 1 and receives reference signal, described first frequency synthesis chip 411 also with the end to end composition phase-locked loop 414 of described first passive ring filter circuit 412, first voltage controlled oscillator 413, first power splitter; Described first power splitter 414 also connects to form output circuit with described first low pass filter 415, second low pass filter 416, first amplifier 417 successively.
Further, as shown in Figure 4, described 1600MHz spot-frequency local oscillation output circuit 42 comprises second frequency synthesis chip 421, second passive ring filter circuit 422, second voltage controlled oscillator 423, second power splitter 424, the 3rd low pass filter 425, second amplifier 426; Wherein, second frequency synthesis chip 421 is connected with described crystal oscillation fractional frequency module 1 and receives reference signal, described second frequency synthesis chip 421 also with the end to end composition phase-locked loop of described second passive ring filter circuit 422, second voltage controlled oscillator 423, second power splitter 424; Described second power splitter 424 also connects to form output circuit with described 3rd low pass filter 425, second amplifier 426 successively.
It should be noted, described first passive ring filter circuit 412 and the second passive ring filter circuit 422 have identical circuit structure, and as shown in Figure 7, its middle port a is input port to its structure, and port b is output port.
Further, described wideband generation module comprises 1691MHz-2991MHz wideband local oscillator output circuit 51 and 1690.7MHz-2990.7MHz wideband local oscillator output circuit 52.
Further, described 1691MHz-2991MHz wideband local oscillator output circuit 51 and 1690.7MHz-2990.7MHz wideband local oscillator output circuit 52 have identical circuit structure, its structure as shown in Figure 5, comprises the 3rd frequency synthesis chip 501(and specifically adopts HMC830), passive ring filter circuit 502, low pass filter 503, amplifier 504 and π type attenuation network and high-pass filtering circuit 505; Wherein, described frequency synthesis chip 501 is connected with described crystal oscillation fractional frequency module 1 and receives reference signal, and described frequency synthesis chip 501 also forms phase-locked loop circuit with described passive filter circuit 502; Simultaneously, described frequency synthesis chip 501 is also connected with described low pass filter 503, described amplifier 504 and described π type attenuation network and high-pass filtering circuit 505 successively and exports 1691MHz-2991MHz or 1690.7MHz-2990.7MHz wideband local oscillation signal, wherein the particular circuit configurations of passive ring filter circuit 502 as shown in Figure 8, port a is input, and port b is output; Shown in circuit structure diagram Fig. 9 of π type attenuation network and high-pass filtering circuit 505, its middle port a is input, and port b is output.
Claims (9)
1. for a radio-frequency (RF) local oscillator circuit for radio general measuring instrument, it is characterized in that, comprise power supply processing module, control module, crystal oscillation fractional frequency module, some synthesis module and wideband generation module frequently; Frequently synthesis module, wideband generation module are connected described crystal oscillation fractional frequency module with described power supply processing module, control module, point respectively; Described power supply processing module is used for providing power supply for radio-frequency (RF) local oscillator circuit; Described control module produces suitable local oscillation signal for controlling radio-frequency (RF) local oscillator circuit; Described crystal oscillation fractional frequency module is for generation of reference signal; Described frequently synthesis module is for the synthesis of point-frequency signal and export; Described wideband generation module is for generating broadband signal and exporting.
2., as claimed in claim 1 for the radio-frequency (RF) local oscillator circuit of radio general measuring instrument, it is characterized in that, described crystal oscillation fractional frequency module comprises the DAC tuning voltage module, crystal oscillator and and connect two clock buffer circuits that connect successively.
3. as claimed in claim 2 for the radio-frequency (RF) local oscillator circuit of radio general measuring instrument, it is characterized in that, described crystal oscillator produces 80MHz reference signal.
4. as claimed in claim 1 for the radio-frequency (RF) local oscillator circuit of radio general measuring instrument, it is characterized in that, described synthesis module frequently comprises 1520MHz spot-frequency local oscillation output circuit and 1600MHz spot-frequency local oscillation output circuit.
5. as claimed in claim 4 for the radio-frequency (RF) local oscillator circuit of radio general measuring instrument, it is characterized in that, described 1520MHz spot-frequency local oscillation output circuit comprises first frequency synthesis chip, the first passive ring filter circuit, the first voltage controlled oscillator, the first power splitter, the first low pass filter, the second low pass filter, the first amplifier; Wherein, first frequency synthesis chip and described crystal oscillation fractional frequency model calling also receive reference signal, described first frequency synthesis chip also with described first passive ring filter circuit, the first voltage controlled oscillator, the end to end composition phase-locked loop of the first power splitter; Described first power splitter also connects to form output circuit with described first low pass filter, the second low pass filter, the first amplifier successively.
6. as claimed in claim 4 for the radio-frequency (RF) local oscillator circuit of radio general measuring instrument, it is characterized in that, described 1600MHz spot-frequency local oscillation output circuit comprises second frequency synthesis chip, the second passive ring filter circuit, the second voltage controlled oscillator, the second power splitter, the 3rd low pass filter, the second amplifier; Wherein, second frequency synthesis chip and described crystal oscillation fractional frequency model calling also receive reference signal, described second frequency synthesis chip also with described second passive ring filter circuit, the second voltage controlled oscillator, the end to end composition phase-locked loop of the second power splitter; Described second power splitter also connects to form output circuit with described 3rd low pass filter, the second amplifier successively.
7., as claimed in claim 1 for the radio-frequency (RF) local oscillator circuit of radio general measuring instrument, it is characterized in that, described wideband generation module comprises 1691MHz-2991MHz wideband local oscillator output circuit and 1690.7MHz-2990.7MHz wideband local oscillator output circuit.
8. as claimed in claim 7 for the radio-frequency (RF) local oscillator circuit of radio general measuring instrument, it is characterized in that, described 1691MHz-2991MHz wideband local oscillator output circuit comprises the 3rd frequency synthesis chip, the 3rd passive ring filter circuit, the 4th low pass filter, the 3rd amplifier and π type attenuation network and a high-pass filtering circuit; Wherein, described 3rd frequency synthesis chip and described crystal oscillation fractional frequency model calling also receive reference signal, and described 3rd frequency synthesis chip also forms phase-locked loop circuit with described 3rd passive filter circuit; Meanwhile, described 3rd frequency synthesis chip is also connected with described 4th low pass filter, described 3rd amplifier and a described π type attenuation network and high-pass filtering circuit and exports 1691MHz-2991MHz wideband local oscillation signal successively.
9. as claimed in claim 7 for the radio-frequency (RF) local oscillator circuit of radio general measuring instrument, it is characterized in that, described 1690.7MHz-2990.7MHz wideband local oscillator output circuit comprises the 4th frequency synthesis chip, the 4th passive ring filter circuit, the 5th low pass filter, the 4th amplifier and the 2nd π type attenuation network and high-pass filtering circuit; Wherein, described 4th frequency synthesis chip and described crystal oscillation fractional frequency model calling also receive reference signal, and described 4th frequency synthesis chip also forms phase-locked loop circuit with described 4th passive filter circuit; Meanwhile, described 4th frequency synthesis chip is also connected with described 5th low pass filter, described 4th amplifier and described 2nd π type attenuation network and high-pass filtering circuit and exports 1690.7MHz-2990.7MHz wideband local oscillation signal successively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520901356.2U CN205105194U (en) | 2015-11-13 | 2015-11-13 | A radio frequency local oscillator circuit for radio general measuring instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520901356.2U CN205105194U (en) | 2015-11-13 | 2015-11-13 | A radio frequency local oscillator circuit for radio general measuring instrument |
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| CN205105194U true CN205105194U (en) | 2016-03-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520901356.2U Expired - Fee Related CN205105194U (en) | 2015-11-13 | 2015-11-13 | A radio frequency local oscillator circuit for radio general measuring instrument |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105227182A (en) * | 2015-11-13 | 2016-01-06 | 成都前锋电子仪器有限责任公司 | A kind of radio-frequency (RF) local oscillator circuit for radio general measuring instrument |
| CN109270985A (en) * | 2018-11-23 | 2019-01-25 | 天津光电通信技术有限公司 | A kind of frequency synthesizer |
-
2015
- 2015-11-13 CN CN201520901356.2U patent/CN205105194U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105227182A (en) * | 2015-11-13 | 2016-01-06 | 成都前锋电子仪器有限责任公司 | A kind of radio-frequency (RF) local oscillator circuit for radio general measuring instrument |
| CN105227182B (en) * | 2015-11-13 | 2018-03-27 | 成都前锋电子仪器有限责任公司 | A kind of RF local oscillator circuit for radio general measuring instrument |
| CN109270985A (en) * | 2018-11-23 | 2019-01-25 | 天津光电通信技术有限公司 | A kind of frequency synthesizer |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160323 Termination date: 20191113 |
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| CF01 | Termination of patent right due to non-payment of annual fee |