CN202334495U - X frequency range small step forward frequency synthesizer for aerospace measurement and control - Google Patents
X frequency range small step forward frequency synthesizer for aerospace measurement and control Download PDFInfo
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- CN202334495U CN202334495U CN2011204825537U CN201120482553U CN202334495U CN 202334495 U CN202334495 U CN 202334495U CN 2011204825537 U CN2011204825537 U CN 2011204825537U CN 201120482553 U CN201120482553 U CN 201120482553U CN 202334495 U CN202334495 U CN 202334495U
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Abstract
The utility model discloses an X frequency range small step forward frequency synthesizer for aerospace measurement and control and relates to a frequency synthesizer device of radio-frequency channel in the field of aerospace measurement and control, which comprises a Direct Digital Synthesizer (DDS) unit, a DDS up-converter, a frequency conversion unit, a reference source demultiplexer, a monitoring circuit, a keyboard and a display screen and the like. According to the X frequency range small step forward frequency synthesizer for aerospace measurement and control, a frequency synthesis technique of the combination of DDS and Phase Locked Loop (PPL) is adopted, the small step forward signals are output by DDS, three times frequency conversions are performed by aids of a plurality of phase-locked loop, a small step forward frequency synthesis on the X frequency range is achieved, the frequency of the synthesized signals can be transformed through the arrangement of the frequency of DDS unit output signals and the frequency of output signals of the phase locked loop by monitoring circuit. The X frequency range small step forward frequency synthesizer for aerospace measurement and control has a small step of frequency, low phase noise and small spurious signals, simultaneously has a stable and reliable performance, convenience in operation and small volume and weight, particularly is suitable for serving as a frequency synthesizer device in the aerospace measurement and control system with a higher signal requirement.
Description
Technical field
The utility model relates to the small step of a kind of space flight measurement and control X frequency range and advances frequency synthesizer, is specially adapted to working frequency collator means in the spaceflight TT&C system higher to demand on signal quality.
Background technology
At present; Because the space flight measurement and control field is very limited at the frequency spectrum resource of X frequency range; And the signal spectrum characteristic is had higher requirements; If adopting frequency resolution frequency synthesis apparatus lower, poor signal quality is that radio-frequency channel provides local oscillation signal, will cause the serious waste of frequency spectrum resource, also can't satisfy the instructions for use in space telemetry and control technology field simultaneously.
The utility model content
The purpose of the utility model is to avoid the weak point in the above-mentioned background technology and provides a kind of to have the space flight measurement and control X frequency range small step that frequency step is little, phase noise is low and spurious signal is little and advance frequency synthesizer, and the utility model also has stable and reliable for performance, easy and simple to handle and characteristics such as volume weight is little.
The utility model is achieved in that it comprises DDS unit 101, DDS upconverter 102, converter unit 103, reference source splitter 104, supervisory circuit 105, keyboard 106 and display screen 107; Wherein DDS unit 101 inbound ports 1 are connected with supervisory circuit 105 outbound ports 1 through data wire; Receive the monitoring control data; Outbound port 3 is connected with DDS upconverter 102 inbound ports 1, sees the up-conversion intermediate-freuqncy signal off; DDS upconverter 102 outbound ports 2 are connected with converter unit 103 inbound ports 1 sees up-conversion two intermediate-freuqncy signals off; Converter unit 103 inbound ports 3 are connected with supervisory circuit 105 outbound ports 2 through data wire, receive the monitoring control data, and outbound port 4 is connected with frequency synthesis output port B, exports final rf frequency; Reference source splitter 104 inbound ports 1 are connected with reference signal input port A; The input external reference signal, outbound port 2 is connected with the inbound port 2 of DDS unit 101, output DDS clock reference signal; Outbound port 3 is connected with the inbound port 3 of DDS upconverter 102; Export a local oscillator reference signal, outbound port 4 is connected with the inbound port 2 of converter unit 103, exports two local oscillator reference signals; Supervisory circuit 105 goes out inbound port 5 and is connected with remote monitoring interface A, carries out the monitor data exchange; Keyboard 106 outbound ports 1 are connected with supervisory circuit 105 inbound ports 3 through data wire, the output keypad information; Display screen 107 inbound ports 1 are connected with supervisory circuit 105 outbound ports 4 through data wire, receive display message.
The purpose of the utility model can also reach through following measure:
The utility model DDS unit 101 comprises with reference to phase-locked loop 210, DDS circuit 211, first amplifier 212; Wherein inbound port 1 pin with reference to phase-locked loop 210 is connected with reference source splitter 104 outbound ports 2 pin; Receive the DDS clock reference signal; Outbound port 2 pin are connected with DDS circuit 211 inbound ports 1 pin, see the DDS clock signal off; DDS circuit 211 inbound ports 2 pin are connected with supervisory circuit 105 outbound ports 1 pin, receive DDS FREQUENCY CONTROL information, and outbound port 3 pin are connected with first amplifier, 212 inbound ports, 1 pin, output DDS signal; First amplifier, 212 outbound ports, 2 pin are connected with DDS upconverter 102 inbound ports 1 pin, output upconverter one intermediate frequency.
The utility model DDS upconverter 102 comprises local oscillator 313, DDS frequency mixer 314, second amplifier 315, first filter 316; Wherein local oscillator 313 outbound ports 2 pin are connected with DDS frequency mixer 314 inbound ports 3 pin; Export a mixing local oscillation signal; Inbound port 1 pin is connected with reference source splitter 104 outbound ports 3 pin, imports a local oscillator reference signal; DDS frequency mixer 314 outbound ports 2 pin are connected with second amplifier, 315 inbound ports, 1 pin, the output radiofrequency signal, and inbound port 1 pin is connected with DDS unit 101 outbound ports, 3 pin, the input intermediate-freuqncy signal; Second amplifier, 315 outbound ports, 2 pin are connected with first filter, 316 inbound ports, 1 pin, the output radiofrequency signal; First filter, 316 outbound ports, 2 pin are connected with mixing unit 103 inbound ports, 1 pin, export two intermediate-freuqncy signals.
The utility model mixing unit 103 comprises monitoring 417, splitter 418, L frequency range local oscillator 419, C frequency range local oscillator 420, L frequency range frequency mixer 421, second filter 422, X frequency range frequency mixer 423, the 3rd filter 424; Wherein monitoring 417 inbound port 1 pin is connected with outbound port 2 pin of supervisory circuit 105; The receive frequency control information; Outbound port 2 pin are connected with inbound port 2 pin of L frequency range local oscillator 419; The output frequency control information, outbound port 3 pin are connected the output frequency control information with inbound port 2 pin of C frequency range local oscillator 420; Inbound port 1 pin of splitter 418 is connected with outbound port 4 pin of reference source splitter 104; Input reference signal; Outbound port 2 pin are connected with inbound port 3 pin of C frequency range local oscillator 420; Output C frequency range local oscillator reference signal, outbound port 3 pin are connected with inbound port 3 pin of L frequency range local oscillator 419, output L frequency range local oscillator reference signal; Inbound port 1 pin of L frequency range frequency mixer 421 is connected with outbound port 2 pin of DDS upconverter 102; Import two intermediate-freuqncy signals; Inbound port 2 pin are connected with outbound port 1 pin of L frequency range local oscillator 419; The input local oscillation signal, outbound port 3 pin are connected with inbound port 1 pin of second filter 422, export three intermediate-freuqncy signals; Inbound port 1 pin of X frequency range frequency mixer 423 is connected with outbound port 2 pin of second filter 422; Import three intermediate-freuqncy signals, inbound port 2 pin are connected with outbound port 1 pin of C frequency range local oscillator 420, the input local oscillation signal; Outbound port 3 pin are connected with inbound port 1 pin of the 3rd filter 424, the output radiofrequency signal; Outbound port 2 pin of the 3rd filter 424 are connected with frequency synthesis output port B, export final radiofrequency signal.
The utility model has been compared following advantage with background technology:
1. the utility model is in X frequency range 100MHz frequency range, and frequency step can reach 1Hz, has realized little stepping, high-resolution performance index.
2. the utility model utilizes the frequency combining method that DDS combines with PLL, when effectively suppressing spurious signal, has guaranteed that the output signal has low phase noise.
3. the utlity model has that volume weight is little, compact conformation, advantage such as easy and simple to handle, stable and reliable for performance.
Description of drawings
Fig. 1 is the electric functional-block diagram of the utility model.
Fig. 2 is the electrical schematic diagram of the utility model DDS unit 101.
Fig. 3 is the electrical schematic diagram of the utility model DDS upconverter 102.
Fig. 4 is the electrical schematic diagram of the utility model mixing unit 103.
Embodiment
Referring to figs. 1 through Fig. 4.The utility model is made up of DDS unit 101, DDS upconverter 102, converter unit 103, reference source splitter 104, supervisory circuit 105, keyboard 106 and display screen 107.Fig. 1 is the functional-block diagram of the utility model, and embodiment presses Fig. 1 connection line.Wherein DDS unit 101 inbound ports 1 are connected with supervisory circuit 105 outbound ports 1 through data wire; Converter unit 103 inbound ports 3 are connected with supervisory circuit 105 outbound ports 2 through data wire; By monitoring and the control of supervisory circuit 105 enforcements to operating state; Keyboard 106 outbound ports 1 are connected with supervisory circuit 105 inbound ports 3 through data wire; Button operation through keyboard 106 is revised and the state of this machine of monitoring, and shows testing result in real time through the display screen 107 that is connected with supervisory circuit 105 outbound ports 4.Embodiment supervisory circuit 105 adopts commercially available dedicated cpu integrated circuit ATMEGA128L to make.Embodiment keyboard 106 adopts commercially available 4 * 4 buttons to make.Embodiment display screen 107 adopts commercially available WDG0006-YYH-#02 display screen to make.
The effect of the utility model DDS unit 101 is that the generation stepping is the little stairstep signal of 1Hz, and it comprises that Fig. 2 is the utility model DDS unit 101 electrical schematic diagrams with reference to phase-locked loop 210, DDS circuit 211, first amplifier 212, and embodiment presses Fig. 2 connection line.Effect with reference to phase-locked loop 210 is that embodiment adopts commercially available integrated circuit ADF4002BRU to make with reference to phase-locked loop 210 for DDS circuit 211 produces reference source signal.The 211 output steppings of supervisory circuit 105 control DDS circuit are the little stairstep signal of 1Hz, and embodiment DDS circuit 211 adopts commercially available integrated circuit AD9912 to make.The output signal of DDS circuit 211 is amplified in 212 effects of first amplifier, and embodiment first amplifier 212 adopts integrated chip ERA-3SM to make.
The effect of the utility model DDS upconverter 102 is frequency conversions first time of accomplishing frequency synthesis; And required local oscillation signal is provided; It comprises local oscillator 313, DDS frequency mixer 314, second amplifier 315, first filter 316; Fig. 3 is the utility model DDS upconverter 102 electrical schematic diagrams, and embodiment presses Fig. 3 connection line.The effect of local oscillator 313 is for DDS frequency mixer 314 provides local oscillation signal, and embodiment local oscillator 313 adopts commercially available integrated circuit ADF4002BRU to make.The local oscillation signal that signal that DDS unit 101 produces and local oscillator 313 produce carries out up-conversion by DDS frequency mixer 314; The output signal carries out amplification filtering output through second amplifier 315, first filter 316; Embodiment DDS frequency mixer 314 adopts commercially available SYM30DLHW production of integrated circuits; Embodiment second amplifier 315 adopts commercially available integrated chip ERA-3SM to make, and embodiment first filter 316 adopts custom filter module 6MB/C-235/U10-S5 element manufacturing.
The effect of the utility model mixing unit 103 is to accomplish the frequency conversion second time of frequency synthesis and frequency conversion for the second time; And provide double conversion required local oscillation signal; Its monitoring 417, splitter 418, L frequency range local oscillator 419, C frequency range local oscillator 420, L frequency range frequency mixer 421, second filter 422, X frequency range frequency mixer 423, the 3rd filter 424; Fig. 4 is the utility model mixing unit 103 electrical schematic diagrams, and embodiment presses Fig. 3 connection line.The signal of DDS upconverter 102 outputs is at first sent into L frequency range frequency mixer 421; The local oscillation signal that produces with L frequency range local oscillator 419 carries out double conversion; Signal after the mixing is sent into 422 filtering of second filter; Send into X frequency range frequency mixer 423 afterwards and carry out three frequency conversions once more with the local oscillation signal that C frequency range local oscillator 420 produces, the signal of output is exported by output port B through 424 filtering of the 3rd filter again.Embodiment monitors 417 and adopts commercially available dedicated cpu integrated circuit C8051F300 to make.Embodiment splitter 418 adopts splitter module GFH-4-3 to make.Embodiment L frequency range local oscillator 419 all adopts commercially available integrated circuit ADF4107BRU to make with C frequency range local oscillator 420.Embodiment L frequency range frequency mixer 421 adopts commercially available integrated circuit ADE-18W+ to make.Embodiment second filter 422 adopts custom filter module 4SMT4-2080-U110-3 to make.Embodiment X frequency range frequency mixer 423 adopts commercially available integrated circuit MC4510 to make.Embodiment the 3rd filter 422 adopts custom filter module 3FS10-7730/U120-P/P to make.
The effect of the utility model reference source splitter 104 is the road 10MHz reference signal that the outside provides to be carried out shunt amplify, and is divided into several output, is respectively DDS unit 101, DDS upconverter 102, mixing unit 103 10MHz is provided reference signal.Embodiment reference source splitter 104 adopts integrated splitter module GFS-6-28 to make.
The concise and to the point operation principle of the utility model is following: the little stairstep signal of DDS unit 101 outputs; After process DDS upconverter 102 is carried out three frequency conversions with mixing unit 103; Realized that the small step on the X frequency range advances frequency synthesis, the frequency of composite signal changes through the frequency that supervisory circuit is provided with DDS unit 101 output signal frequency and mixing unit 103 local oscillation signals.
The mounting structure of the utility model is following: whole machine using standard 2U cabinet, and each parts of cabinet inside adopt modularized design, all use independently shielding box body structure, effectively avoid interfering with each other between the electromagnetic signal; The characteristic module of the utility model is combined through installed part, and volume reduces greatly; Cabinet overall dimension is 480 millimeters * 80 millimeters * 410 millimeters; Rail plate can be installed in the cabinet both sides; Case front panel is equipped with keyboard 106 and display screen 107; The cabinet rear portion is equipped with supply socket, remote monitoring interface A socket, frequency synthesis output port B socket and reference signal input port C socket, assembly cost utility model.
Claims (4)
1. frequency synthesizer is advanced in space flight measurement and control X frequency range small step; Comprise reference source splitter (104), supervisory circuit (105), keyboard (106) and display screen (107); It is characterized in that: also comprise DDS unit (101), DDS upconverter (102) and converter unit (103), wherein DDS unit (101) inbound port 1 is connected with supervisory circuit (105) outbound port 1 through data wire, receives the monitoring control data; Outbound port 3 is connected with DDS upconverter (102) inbound port 1, sees the up-conversion intermediate-freuqncy signal off; DDS upconverter (102) outbound port 2 is connected with converter unit (103) inbound port 1 sees up-conversion two intermediate-freuqncy signals off; Converter unit (103) inbound port 3 is connected with supervisory circuit (105) outbound port 2 through data wire, receives the monitoring control data, and outbound port 4 is connected with frequency synthesis output port B, exports final rf frequency; Reference source splitter (104) inbound port 1 is connected with reference signal input port A; The input external reference signal, outbound port 2 is connected with the inbound port 2 of DDS unit (101), output DDS clock reference signal; Outbound port 3 is connected with the inbound port 3 of DDS upconverter (102); Export a local oscillator reference signal, outbound port 4 is connected with the inbound port 2 of converter unit (103), exports two local oscillator reference signals; Supervisory circuit (105) goes out inbound port 5 and is connected with remote monitoring interface A, carries out the monitor data exchange; Keyboard (106) outbound port 1 is connected with supervisory circuit (105) inbound port 3 through data wire, the output keypad information; Display screen (107) inbound port 1 is connected with supervisory circuit (105) outbound port 4 through data wire, receives display message.
2. frequency synthesizer is advanced in 1 described space flight measurement and control X frequency range small step according to claims; It is characterized in that: described DDS unit (101) comprises with reference to phase-locked loop (210), DDS circuit (211), first amplifier (212); Wherein inbound port 1 pin with reference to phase-locked loop (210) is connected with reference source splitter (104) outbound port 2 pin; Receive the DDS clock reference signal, outbound port 2 pin are connected with DDS circuit (211) inbound port 1 pin, see the DDS clock signal off; DDS circuit (211) inbound port 2 pin are connected with supervisory circuit (105) outbound port 1 pin, receive DDS FREQUENCY CONTROL information, and outbound port 3 pin are connected with first amplifier (212) inbound port, 1 pin, output DDS signal; First amplifier (212) outbound port, 2 pin are connected with DDS upconverter (102) inbound port 1 pin, output upconverter one intermediate frequency.
3. frequency synthesizer is advanced in 1 described space flight measurement and control X frequency range small step according to claims; It is characterized in that: described DDS upconverter (102) comprises local oscillator (313), DDS frequency mixer (314), second amplifier (315), first filter (316); Wherein local oscillator (313) outbound port 2 pin are connected with DDS frequency mixer (314) inbound port 3 pin; Export a mixing local oscillation signal, inbound port 1 pin is connected with reference source splitter (104) outbound port 3 pin, imports a local oscillator reference signal; DDS frequency mixer (314) outbound port 2 pin are connected with second amplifier (315) inbound port, 1 pin, the output radiofrequency signal, and inbound port 1 pin is connected with DDS unit (101) outbound port 3 pin, the input intermediate-freuqncy signal; Second amplifier (315) outbound port, 2 pin are connected with first filter (316) inbound port, 1 pin, the output radiofrequency signal; First filter (316) outbound port, 2 pin are connected with mixing unit (103) inbound port 1 pin, export two intermediate-freuqncy signals.
4. frequency synthesizer is advanced in 1 described space flight measurement and control X frequency range small step according to claims; It is characterized in that: described mixing unit (103) comprises monitoring (417), splitter (418), L frequency range local oscillator (419), C frequency range local oscillator (420), L frequency range frequency mixer (421), second filter (422), X frequency range frequency mixer (423), the 3rd filter (424); Wherein inbound port 1 pin of monitoring (417) is connected with outbound port 2 pin of supervisory circuit (105); The receive frequency control information; Outbound port 2 pin are connected with inbound port 2 pin of L frequency range local oscillator (419); The output frequency control information, outbound port 3 pin are connected the output frequency control information with inbound port 2 pin of C frequency range local oscillator (420); Inbound port 1 pin of splitter (418) is connected with outbound port 4 pin of reference source splitter (104); Input reference signal; Outbound port 2 pin are connected with inbound port 3 pin of C frequency range local oscillator (420); Output C frequency range local oscillator reference signal, outbound port 3 pin are connected with inbound port 3 pin of L frequency range local oscillator (419), output L frequency range local oscillator reference signal; Inbound port 1 pin of L frequency range frequency mixer (421) is connected with outbound port 2 pin of DDS upconverter (102); Import two intermediate-freuqncy signals; Inbound port 2 pin are connected with outbound port 1 pin of L frequency range local oscillator (419); The input local oscillation signal, outbound port 3 pin are connected with inbound port 1 pin of second filter (422), export three intermediate-freuqncy signals; Inbound port 1 pin of X frequency range frequency mixer (423) is connected with outbound port 2 pin of second filter (422); Import three intermediate-freuqncy signals; Inbound port 2 pin are connected with outbound port 1 pin of C frequency range local oscillator (420); The input local oscillation signal, outbound port 3 pin are connected with inbound port 1 pin of the 3rd filter (424), the output radiofrequency signal; Outbound port 2 pin of the 3rd filter (424) are connected with frequency synthesis output port B, export final radiofrequency signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204825537U CN202334495U (en) | 2011-11-28 | 2011-11-28 | X frequency range small step forward frequency synthesizer for aerospace measurement and control |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011204825537U CN202334495U (en) | 2011-11-28 | 2011-11-28 | X frequency range small step forward frequency synthesizer for aerospace measurement and control |
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| CN202334495U true CN202334495U (en) | 2012-07-11 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103746689A (en) * | 2013-12-19 | 2014-04-23 | 北京时代民芯科技有限公司 | Lock detector used for PLL frequency synthesizer |
| CN104300977A (en) * | 2014-10-23 | 2015-01-21 | 重庆会凌电子新技术有限公司 | Low-phase-noise high-speed frequency synthesizing system |
| CN105577172A (en) * | 2015-12-18 | 2016-05-11 | 中国电子科技集团公司第五十四研究所 | Anti-vibration constant-temperature low-phase-noise phase-locking reference source |
-
2011
- 2011-11-28 CN CN2011204825537U patent/CN202334495U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103746689A (en) * | 2013-12-19 | 2014-04-23 | 北京时代民芯科技有限公司 | Lock detector used for PLL frequency synthesizer |
| CN103746689B (en) * | 2013-12-19 | 2016-07-06 | 北京时代民芯科技有限公司 | A kind of for the lock detector in PLL frequency synthesizer |
| CN104300977A (en) * | 2014-10-23 | 2015-01-21 | 重庆会凌电子新技术有限公司 | Low-phase-noise high-speed frequency synthesizing system |
| CN105577172A (en) * | 2015-12-18 | 2016-05-11 | 中国电子科技集团公司第五十四研究所 | Anti-vibration constant-temperature low-phase-noise phase-locking reference source |
| CN105577172B (en) * | 2015-12-18 | 2018-05-15 | 中国电子科技集团公司第五十四研究所 | Antidetonation constant temperature Low phase noise locks phase reference source |
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Granted publication date: 20120711 |
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| CX01 | Expiry of patent term |