CN108111165A - A kind of fast frequency-hopped locking phase locked source - Google Patents
A kind of fast frequency-hopped locking phase locked source Download PDFInfo
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- CN108111165A CN108111165A CN201810098783.XA CN201810098783A CN108111165A CN 108111165 A CN108111165 A CN 108111165A CN 201810098783 A CN201810098783 A CN 201810098783A CN 108111165 A CN108111165 A CN 108111165A
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- frequency divider
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- 238000001914 filtration Methods 0.000 claims abstract description 17
- 230000005611 electricity Effects 0.000 claims description 4
- 238000005265 energy consumption Methods 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 6
- 238000004891 communication Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000013016 damping Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000009191 jumping Effects 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 240000002853 Nelumbo nucifera Species 0.000 description 1
- 235000006508 Nelumbo nucifera Nutrition 0.000 description 1
- 235000006510 Nelumbo pentapetala Nutrition 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003750 conditioning effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
Classifications
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
- H03L7/00—Automatic control of frequency or phase; Synchronisation
- H03L7/06—Automatic control of frequency or phase; Synchronisation using a reference signal applied to a frequency- or phase-locked loop
- H03L7/08—Details of the phase-locked loop
- H03L7/081—Details of the phase-locked loop provided with an additional controlled phase shifter
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
- H03L7/00—Automatic control of frequency or phase; Synchronisation
- H03L7/06—Automatic control of frequency or phase; Synchronisation using a reference signal applied to a frequency- or phase-locked loop
- H03L7/08—Details of the phase-locked loop
- H03L7/085—Details of the phase-locked loop concerning mainly the frequency- or phase-detection arrangement including the filtering or amplification of its output signal
- H03L7/089—Details of the phase-locked loop concerning mainly the frequency- or phase-detection arrangement including the filtering or amplification of its output signal the phase or frequency detector generating up-down pulses
- H03L7/0891—Details of the phase-locked loop concerning mainly the frequency- or phase-detection arrangement including the filtering or amplification of its output signal the phase or frequency detector generating up-down pulses the up-down pulses controlling source and sink current generators, e.g. a charge pump
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
- H03L7/00—Automatic control of frequency or phase; Synchronisation
- H03L7/06—Automatic control of frequency or phase; Synchronisation using a reference signal applied to a frequency- or phase-locked loop
- H03L7/08—Details of the phase-locked loop
- H03L7/085—Details of the phase-locked loop concerning mainly the frequency- or phase-detection arrangement including the filtering or amplification of its output signal
- H03L7/091—Details of the phase-locked loop concerning mainly the frequency- or phase-detection arrangement including the filtering or amplification of its output signal the phase or frequency detector using a sampling device
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- Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
Abstract
The invention discloses a kind of fast frequency-hopped locking phase locked source, including phase-locked loop circuit, modulate circuit and MCU module；The phase-locked loop circuit includes frequency divider, phase demodulation module, charge pump, loop filtering module, voltage controlled oscillator VCO and decimal frequency divider；The phase demodulation module includes phase discriminator and MOS switch；The input terminal incoming reference signal of frequency divider, the output terminal of frequency divider is connected with phase discriminator signal input part, the signal output part of phase discriminator passes sequentially through charge pump and loop filtering module is connected to voltage controlled oscillator VCO, the output terminal of voltage controlled oscillator VCO is connected respectively with modulate circuit and decimal frequency divider, and the output terminal of the decimal frequency divider and the feedback input end of phase discriminator connect；The current input terminal of the MOS switch is connected to loop filtering module, the current output terminal ground connection of MOS switch, and the control signal of MOS switch is connected with MCU module.The present invention provides a kind of fast frequency-hopped locking phase locked sources, have advantage low in energy consumption, small, at low cost.
Description
Technical field
The present invention relates to the communications field, more particularly to a kind of fast frequency-hopped locking phase locked source.
Background technology
Frequency hopping communications be exactly carrier frequency in the range of broad frequency band, the communication technology of random jump, it have it is stronger
The advantages that interference free performance, anti-intercepting and capturing performance, anti-decay property, while frequency spectrum resource can also be utilized to greatest extent, in military affairs
Field has obtained rapid development, and with the progress of wireless communication technique, frequency hopping is rapidly spread to its unique advantage
Civil field.
But for now, Fast Frequency Hopping Synthesizers are often realized using DDS combinations or using the switchings of multi-disc phase locked source, right
Different Hopping frequencies are into horizontal lock, but both modes undoubtedly add material cost, also substantially increase power consumption, increase
The volume of locking phase locked source.
The content of the invention
It is an object of the invention to overcome the deficiencies of the prior art and provide a kind of fast frequency-hopped locking phase locked sources, can be fast
Frequency hopping locking lock phase is carried out fastly, and there is advantage low in energy consumption, small, at low cost.
The purpose of the present invention is what is be achieved through the following technical solutions：A kind of fast frequency-hopped locking phase locked source, including lock
Phase loop circuit, modulate circuit and MCU module；The phase-locked loop circuit includes frequency divider, phase demodulation module, charge pump, loop filtering
Module, voltage controlled oscillator VCO and decimal frequency divider；The phase demodulation module includes phase discriminator and MOS switch；
The input terminal incoming reference signal of frequency divider, the output terminal of frequency divider are connected with phase discriminator signal input part, phase demodulation
The signal output part of device passes sequentially through charge pump and loop filtering module is connected to voltage controlled oscillator VCO, voltage controlled oscillator VCO
Output terminal is connected respectively with modulate circuit and decimal frequency divider, the output terminal of the decimal frequency divider and the feed back input of phase discriminator
End connection；
The current input terminal of the MOS switch is connected to loop filtering module, the current output terminal ground connection of MOS switch, MOS
The control signal of switch is connected with MCU module.
Preferably, the loop filtering module includes amplifier A1, the first capacitance C1, the second capacitance C2, the 3rd capacitance C3, the
One resistance R1, second resistance R2,3rd resistor R3, the 4th resistance R4, the 5th resistance R5 and the 6th resistance R6；The amplifier A1's
Normal phase input end connects the output terminal of charge pump, and one end of the first capacitance C1 is connected to the normal phase input end and charge pump of amplifier A1
Between, first capacitance C1 other ends ground connection, one end of the second capacitance C2 be connected to amplifier A1 normal phase input end and charge pump it
Between, the other end of the second capacitance C2 passes sequentially through first resistor R1 and second resistance R2 ground connection, the first resistor R1 and second
The common port of resistance R2 is connected to the current input terminal of MOS switch；The negative-phase input of the amplifier A1 passes through the 4th resistance R4
Ground connection, the output terminal of amplifier A1 are connected to voltage controlled oscillator VC0 by the 6th resistance R6；The amplifier A1's and the 6th resistance R6
Common port is also connected to by the 5th resistance R5 between amplifier A1 negative-phase inputs and four resistance R4；6th resistance and pressure
The common port of control oscillator VC0 is grounded by the 3rd capacitance C3.
Preferably, the modulate circuit includes first filter, amplifier and second filter, the first filter
Input terminal is connected with voltage controlled oscillator VCO, and the output terminal of first filter is connected by amplifier with second filter, by second
Wave filter carries out signal output.
Preferably, frequency hopping locking phase locked source further includes power module, the power module respectively with phase-locked loop circuit,
Modulate circuit is connected with MCU module, to realize the power supply of entire frequency hopping locking phase locked source.
The beneficial effects of the invention are as follows：The present invention is by controlling the break-make of MOS switch, the electric current that can be exported to charge pump
It is adjusted, and then changes system loop bandwidth, realize the quick lock in of Hopping frequencies, mutually lock phase with multi-disc compared to DDS locks
The mode of source switching, has advantage low in energy consumption, small, at low cost.
Description of the drawings
Fig. 1 is the principle of the present invention block diagram；
Fig. 2 is the circuit diagram of loop filtering module；
The test system block diagram of the fast frequency-hopped locking phase locked sources of Fig. 3.
Specific embodiment
Technical scheme is described in further detail below in conjunction with the accompanying drawings, but protection scope of the present invention is not limited to
It is as described below.
As shown in Figure 1, a kind of fast frequency-hopped locking phase locked source, including phase-locked loop circuit, modulate circuit and MCU module；Institute
Stating phase-locked loop circuit includes frequency divider, phase demodulation module, charge pump, loop filtering module, voltage controlled oscillator VCO and fractional frequency division
Device；The phase demodulation module includes phase discriminator and MOS switch；
The input terminal incoming reference signal of frequency divider, the output terminal of frequency divider are connected with phase discriminator signal input part, phase demodulation
The signal output part of device passes sequentially through charge pump and loop filtering module is connected to voltage controlled oscillator VCO, voltage controlled oscillator VCO
Output terminal is connected respectively with modulate circuit and decimal frequency divider, the output terminal of the decimal frequency divider and the feed back input of phase discriminator
End connection；
The current input terminal of the MOS switch is connected to loop filtering module, the current output terminal ground connection of MOS switch, MOS
The control signal of switch is connected with MCU module.
As shown in Fig. 2, the loop filtering module includes amplifier A1, the first capacitance C1, the second capacitance C2, the 3rd capacitance
C3, first resistor R1, second resistance R2,3rd resistor R3, the 4th resistance R4, the 5th resistance R5 and the 6th resistance R6；The fortune
Put the output terminal of the normal phase input end connection charge pump of A1, one end of the first capacitance C1 be connected to amplifier A1 normal phase input end and
Between charge pump, first capacitance C1 other ends ground connection, one end of the second capacitance C2 is connected to the normal phase input end and electricity of amplifier A1
Between lotus pump, the other end of the second capacitance C2 passes sequentially through first resistor R1 and second resistance R2 ground connection, the first resistor R1
The current input terminal of MOS switch is connected to the common port of second resistance R2；The negative-phase input of the amplifier A1 passes through the 4th
Resistance R4 is grounded, and the output terminal of amplifier A1 is connected to voltage controlled oscillator VC0 by the 6th resistance R6；The electricity of the amplifier A1 and the 6th
The common port of R6 is hindered, is also connected to by the 5th resistance R5 between amplifier A1 negative-phase inputs and four resistance R4；6th electricity
Resistance and the common port of voltage controlled oscillator VC0 are grounded by the 3rd capacitance C3.
The modulate circuit includes first filter, amplifier and second filter, the input terminal of the first filter
It is connected with voltage controlled oscillator VCO, the output terminal of first filter is connected by amplifier with second filter, by second filter
Carry out signal output.
The frequency hopping locking phase locked source further includes power module, and the power module is electric with phase-locked loop circuit, conditioning respectively
Road is connected with MCU module, to realize the power supply of entire frequency hopping locking phase locked source.
The operation principle of the present invention is as follows：According to principle of phase lock loop, voltage controlled oscillator VCO return frequency makes the mirror of phaselocked loop
Two input terminal of phase device is there are frequency and phase difference, and by the phase of phaselocked loop from motion tracking, charge pump generates Charge controlled output
The phase of carrier wave follows the phase of reference, and the phase difference of the two is made to be maintained in certain scope and is not increased infinitely at any time, this
Process is frequency acquisition process (i.e. locking process), and capture time is locking time, and capture time depends on system loop bandwidth,
And it is inversely proportional with loop bandwidth；And loop bandwidth is proportional to charge pump current, quick lock in this application, is exactly by right
The electric current of charge pump output is adjusted what is realized；Specifically, in locking process, the function of current is in the block in loop filtering mould
On damping resistance (first resistor R1 and second resistance R2), if R2=3R1, in locking process, MCU module control MOS switch
It is closed, the common port shorted to earth of first resistor R1 and second resistance R2, and then damping resistance is reduced to a quarter, then accumulates
Electric current expands 16 times, and loop bandwidth expands 4 times, at this point, since capture time (locking time) is inversely proportional with loop bandwidth, therefore energy
Capture time (locking time) is enough greatly reduced to achieve the purpose that quick lock in；After a period of time, MCU module control MOS is opened
Shut-off is opened, and accumulated current returns to initial value, and loop bandwidth reduces to inhibit spuious and make an uproar with foreign minister.
The present invention has the key technical indexes requirement of fast frequency-hopped locking phase locked source：
Working frequency：1200MHz~1400MHz；
Output power：≥15dBm；
Locking time：≤5us；
Power consumption：≤1W.
For the verification requirement of the invention that whether touches the mark, using test system as shown in Figure 3, the application is surveyed
Examination, in the quick input terminal incoming reference signal for jumping locking phase locked source, output terminal connects frequency spectrograph and oscillograph, and utilizes direct current
Power supply is powered to quickly jumping locking phase locked source, and being connected to MCU module using control panel controls it；Initial reference source
10MHz, power 0dBm, 1200MHZ Hopping frequencies and 1400MHZ Hopping frequencies when, respectively to power, locking time,
Harmonics restraint, power consumption are tested, and obtain that the results are shown in table below：
It can be seen that in the present invention, power, locking time, harmonics restraint, power consumption etc. are functional, meet technical indicator
It is required that.
Claims (4)
1. a kind of fast frequency-hopped locking phase locked source, it is characterised in that：Including phase-locked loop circuit, modulate circuit and MCU module；It is described
Phase-locked loop circuit includes frequency divider, phase demodulation module, charge pump, loop filtering module, voltage controlled oscillator VCO and decimal frequency divider；
The phase demodulation module includes phase discriminator and MOS switch；
The input terminal incoming reference signal of frequency divider, the output terminal of frequency divider are connected with phase discriminator signal input part, phase discriminator
Signal output part passes sequentially through charge pump and loop filtering module is connected to voltage controlled oscillator VCO, the output of voltage controlled oscillator VCO
End is connected respectively with modulate circuit and decimal frequency divider, and the output terminal of the decimal frequency divider and the feedback input end of phase discriminator connect
It connects；
The current input terminal of the MOS switch is connected to loop filtering module, the current output terminal ground connection of MOS switch, MOS switch
Control signal be connected with MCU module.
2. a kind of fast frequency-hopped locking phase locked source according to claim 1, it is characterised in that：The loop filtering module bag
Include amplifier A1, the first capacitance C1, the second capacitance C2, the 3rd capacitance C3, first resistor R1, second resistance R2,3rd resistor R3,
Four resistance R4, the 5th resistance R5 and the 6th resistance R6；The output terminal of the normal phase input end connection charge pump of the amplifier A1, first
One end of capacitance C1 is connected between normal phase input end and the charge pump of amplifier A1, first capacitance C1 other ends ground connection, the second electricity
The one end for holding C2 is connected between normal phase input end and the charge pump of amplifier A1, and the other end of the second capacitance C2 passes sequentially through first
The common port of resistance R1 and second resistance R2 ground connection, the first resistor R1 and second resistance R2 are connected to the electric current of MOS switch
Input terminal；The negative-phase input of the amplifier A1 is grounded by the 4th resistance R4, and the output terminal of amplifier A1 passes through the 6th resistance R6
It is connected to voltage controlled oscillator VC0；The common port of the amplifier A1 and the 6th resistance R6, is also connected to amplifier by the 5th resistance R5
Between A1 negative-phase inputs and four resistance R4；The common port of 6th resistance and voltage controlled oscillator VC0 passes through the 3rd capacitance C3
Ground connection.
3. a kind of fast frequency-hopped locking phase locked source according to claim 1, it is characterised in that：The modulate circuit includes the
One wave filter, amplifier and second filter, the input terminal of the first filter are connected with voltage controlled oscillator VCO, the first filter
The output terminal of ripple device is connected by amplifier with second filter, and signal output is carried out by second filter.
4. a kind of fast frequency-hopped locking phase locked source according to claim 1, it is characterised in that：The frequency hopping locks phase locked source
Power module is further included, the power module is connected respectively with phase-locked loop circuit, modulate circuit and MCU module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810098783.XA CN108111165A (en) | 2018-01-31 | 2018-01-31 | A kind of fast frequency-hopped locking phase locked source |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810098783.XA CN108111165A (en) | 2018-01-31 | 2018-01-31 | A kind of fast frequency-hopped locking phase locked source |
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| Publication Number | Publication Date |
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| CN108111165A true CN108111165A (en) | 2018-06-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810098783.XA Pending CN108111165A (en) | 2018-01-31 | 2018-01-31 | A kind of fast frequency-hopped locking phase locked source |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114826254A (en) * | 2022-06-28 | 2022-07-29 | 浙江地芯引力科技有限公司 | Phase-locked loop circuit, local oscillator and electronic equipment |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR19980026771A (en) * | 1996-10-11 | 1998-07-15 | 김광호 | Rapid-synchronous phase-locked loop circuit |
| US20070046388A1 (en) * | 2005-09-01 | 2007-03-01 | Inphi Corporation | PLL circuit with self-selecting variable divide ratio |
| CN203086442U (en) * | 2012-12-31 | 2013-07-24 | 四川九洲电器集团有限责任公司 | Phase-locked fast frequency hopping source based on adder |
| CN104348481A (en) * | 2013-07-31 | 2015-02-11 | 上海华虹宏力半导体制造有限公司 | Active filter for phase-locked loop |
| CN207588840U (en) * | 2018-01-31 | 2018-07-06 | 成都泰格微电子研究所有限责任公司 | A kind of fast frequency-hopped locking phase locked source |
-
2018
- 2018-01-31 CN CN201810098783.XA patent/CN108111165A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR19980026771A (en) * | 1996-10-11 | 1998-07-15 | 김광호 | Rapid-synchronous phase-locked loop circuit |
| US20070046388A1 (en) * | 2005-09-01 | 2007-03-01 | Inphi Corporation | PLL circuit with self-selecting variable divide ratio |
| CN203086442U (en) * | 2012-12-31 | 2013-07-24 | 四川九洲电器集团有限责任公司 | Phase-locked fast frequency hopping source based on adder |
| CN104348481A (en) * | 2013-07-31 | 2015-02-11 | 上海华虹宏力半导体制造有限公司 | Active filter for phase-locked loop |
| CN207588840U (en) * | 2018-01-31 | 2018-07-06 | 成都泰格微电子研究所有限责任公司 | A kind of fast frequency-hopped locking phase locked source |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114826254A (en) * | 2022-06-28 | 2022-07-29 | 浙江地芯引力科技有限公司 | Phase-locked loop circuit, local oscillator and electronic equipment |
| CN114826254B (en) * | 2022-06-28 | 2022-09-20 | 浙江地芯引力科技有限公司 | Phase-locked loop circuit, local oscillator and electronic equipment |
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