CN105897257A - Frequency-extendable signal generation device and implementation method - Google Patents
Frequency-extendable signal generation device and implementation method Download PDFInfo
- Publication number
- CN105897257A CN105897257A CN201610319097.1A CN201610319097A CN105897257A CN 105897257 A CN105897257 A CN 105897257A CN 201610319097 A CN201610319097 A CN 201610319097A CN 105897257 A CN105897257 A CN 105897257A
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- China
- Prior art keywords
- frequency
- signal
- signal generating
- phase
- generating module
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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
- H03L7/085—Details of the phase-locked loop concerning mainly the frequency- or phase-detection arrangement including the filtering or amplification of its output signal
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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
- H03L7/10—Details of the phase-locked loop for assuring initial synchronisation or for broadening the capture range
- H03L7/107—Details of the phase-locked loop for assuring initial synchronisation or for broadening the capture range using a variable transfer function for the loop, e.g. low pass filter having a variable bandwidth
-
- 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
- H03L7/16—Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop
- H03L7/18—Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop using a frequency divider or counter in the loop
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION, OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
- H03L2207/00—Indexing scheme relating to automatic control of frequency or phase and to synchronisation
- H03L2207/50—All digital phase-locked loop
Abstract
The invention relates to a frequency-extendable signal generation device and an implementation method. The frequency-extendable signal generation device comprises n signal generation modules and a numerical control part; the numerical control part is composed of a single-chip microcomputer and an FPGA which are connected in series; the FPGA of the numerical control part is connected with input ends of the n signal generation modules; each signal generation module is composed of a phase discriminator, a loop filter, a voltage-controlled oscillator, a first-stage variable gain amplifier and a second-stage variable gain amplifier which are sequentially connected in series in a one-way manner; and a feedback signal and a reference signal output by each voltage-controlled oscillator are input to each phase discriminator. The frequency-extendable signal generation device has the beneficial effects of being simple in function and convenient to operate. The frequency coverage range can be expanded conveniently through addition of the signal generation modules; and the frequency-extendable signal generation device is applied to a test stage in a research and development process of a wireless communication device.
Description
Technical field
The present invention relates to a kind of signal generating apparatus and implementation method, set particularly to a kind of expansible signal of frequency
Standby and implementation method.
Background technology
In current most of Wireless Telecom Equipment R&D process, it is required for using signal generating apparatus.Existing market exists
This kind of equipment, have that volume is big, price is high, use complicated shortcoming and the problem that can not extend when frequency is fixed, allow very
The developer of many insufficient funds hangs back, and uses the most cumbersome for primary developer, and, a lot of developers need
Only frequency, power to be used, the pattern for other is not required to.Summary of the invention
The problem existed in view of prior art, the present invention provides a kind of and reduces the complexity, frequently that signal generating apparatus uses
The signal generating apparatus that rate can the most arbitrarily extend, concrete technical scheme is, a kind of expansible signal generating apparatus of frequency,
Including n signal generating module, numerical control part, it is characterised in that: described numerical control part is composed in series by SCM&FPGA,
The FPGA of numerical control part connects n signal generating module input, and described signal generating module is by phase discriminator, loop filtering
Together with device, voltage controlled oscillator, first order variable gain amplifier are the most uni-directional series connected with second level variable gain amplifier, pressure
Controlled oscillator output feedback signal and reference signal are input to phase discriminator jointly, and phase discriminator carries out ratio phase to two signals, at mirror
Phase device outfan output ratio phase voltage, is input to the input of loop filter than phase voltage, through loop filter filtering output,
Loop filter outfan is input to the voltage-controlled end of voltage controlled oscillator, and voltage controlled oscillator is at ratio under phase voltage control, and output is stable
Frequency, voltage controlled oscillator output signal is input to first order variable gain amplifier input, amplified defeated at outfan
Going out, first order variable gain amplifier outfan is input to second level variable gain amplifier input, amplified output.
The expansible signal of frequency produce method comprise the following steps, 1), by button to single-chip microcomputer write frequency or merit
Rate, numerical control part single-chip microcomputer judges whether frequency signal after receiving the signal of button, in this way, and frequency signal, enter frequency
Service aisle, no, ingoing power service aisle；2), frequency service aisle (1), be the 1st section frequency segmentation, the 2nd section, the 3rd
Section to n-th section, respectively corresponding 1st signal generating module, the 2nd signal generating module, the 3rd signal generating module, send out to the n-th signal
Raw module, according to key-press input numerical value, opens respective value signal generating module, reaches desired frequency range, reference source
It is simultaneously entered reference frequency signal；(2), reference frequency signal enter phase discriminator, meanwhile, primary circuit exports phase through voltage controlled oscillator
The stable frequency signal of bit frequency is diverted into frequency divider/n；(3), the divided device/n of shunting signal believes to phase discriminator with reference frequency
Number carrying out phase place unanimously compares, loop filter output DC voltage, through the frequency that voltage controlled oscillator output phase frequency is stable
Signal, through the gain amplifier control of two-stage amplifier, forms power controllable signal；3), power service aisle (1), open corresponding
Numerical value signal generating module, (2), instruct to FPGA transmission power control, (3), FPGA write number in work at present module,
(4) display display current power value.
The invention has the beneficial effects as follows, function is simple, easy to operate；Can expand conveniently by increasing signal generating module
Exhibition frequency coverage, is applied to the test phase in Wireless Telecom Equipment R&D process.
Accompanying drawing explanation
Fig. 1 is the circuit block diagram of the present invention.
Fig. 2 is the signal generator module circuit block diagram of the present invention.
Fig. 3 is the signal generator module circuit theory diagrams of the present invention.
Fig. 4 is the workflow diagram of the present invention.
Detailed description of the invention
Below in conjunction with the accompanying drawings native system is further described.
As shown in Figure 1, 2, 3, a kind of expansible signal generating apparatus of frequency, including n signal generating module, numerical control portion
Point, key part, switch and display, it is characterised in that: n signal generating module input be connected with numerical control part respectively,
Outfan with switch is connected, numerical control part is connected with key part, display respectively, described numerical control part by single-chip microcomputer with
FPGA forms, phase-locked loop chip that described signal generating module includes being made up of phase discriminator, loop filter, frequency divider/n,
Reference source, voltage controlled oscillator VCO, first order amplifier and second level amplifier, reference source, phase discriminator, loop filter, voltage-controlled
Together with agitator VCO, first order amplifier are the most uni-directional series connected with second level amplifier, voltage controlled oscillator VCO outfan is also
Together with divided device/n is uni-directional series connected with phase discriminator, wherein reference source and loop filter are used for producing required signal frequency
Rate, two-stage amplifier and voltage-controlled attenuator are used for the power of control signal, and its principle is: phase discriminator detection input signal and output
The phase contrast of signal, and the phase signal detected is converted into voltage signal output by phase discriminator, through loop filter
Form the control voltage of voltage controlled oscillator (VCO) after filtering, implement to control to the frequency of oscillator output signal, then by feedback
Path carries out the frequency of voltage controlled oscillator output signal, phase feedback to phase discriminator that phase place is consistent to be compared with reference frequency signal
Relatively, loop filter output DC voltage, through the frequency signal that voltage controlled oscillator output phase frequency is stable, through two-stage amplifier
Gain amplifier control, formed power controllable signal.
Described key part includes 0 ~ 9 digital keys, cps key " GHz ", " MHz ", " KHz " and " Hz " and merit
Rate unit key " dBm ".
Principle is that the increase by signal generating module is extended, and reaches broader frequency range, and first we are frequency
Rate is segmented into the 1st section, the 2nd section, the 3rd section ... n-th section, and corresponding signal generating module 1, signal generating module 2, signal are sent out respectively
Raw module 3 ... signal generating module n, according to key-press input numerical value, opens respective value signal generating module, reaches institute
The frequency range wanted.
When key-press input for frequency time, first by single-chip microcomputer determination frequency place frequency range；According to frequency range to corresponding mould
Block writes number；
When key-press input for power time, in current block write number, display display ongoing frequency, performance number.
The instruction such as frequency, power is sent to corresponding module by FPGA, simultaneously drives display display ongoing frequency, power
Value.
As shown in Figure 4, the method that the expansible signal of frequency produces comprises the following steps,
1), judged after receiving the signal of button to single-chip microcomputer write frequency or power, numerical control part single-chip microcomputer by button
Whether frequency signal, in this way, frequency signal, enter frequency service aisle, no, ingoing power service aisle；
2), frequency service aisle
(1), frequency segmentation it is the 1st section, the 2nd section, the 3rd section to n-th section, corresponding first signal generating module, the second letter respectively
Number occur module, the 3rd signal generating module, to the n-th signal generating module, according to key-press input numerical value, open respective value
Signal generating module, reaches desired frequency range, and reference source is simultaneously entered reference frequency signal；
(2), reference frequency signal enter phase discriminator, meanwhile, primary circuit is through the voltage controlled oscillator output stable frequency of phase frequency
Signal is diverted into frequency divider/n；
(3), the divided device/n of shunting signal to phase discriminator carry out with reference frequency signal that phase place is consistent to be compared, loop filter
Output DC voltage, through the frequency signal that voltage controlled oscillator output phase frequency is stable, through the gain amplifier control of two-stage amplifier
System, forms power controllable signal；
3), power service aisle
(1), respective value signal generating module is opened,
(2), instruct to FPGA transmission power control,
(3), FPGA in work at present module, write the register data of frequency divider,
(4) display display current power value.
Principle is according to principle of phase lock loop,
Use the signal generating module of a n octave, these wired in parallel are got up, by the control of numerical control, makes frequency cover
Covering n module frequency sum, i.e. the signal frequency of module 1 is f～2f, the frequency of module 2 is 2f～4f, and the frequency of module 3 is
4f～8f ... the frequency of module n is 1/2*2nF～2nf.The frequency range of this equipment adds up as f～2nf。
Principle is that the increase by signal generating module is extended, and reaches broader frequency range, and first we are frequency
Rate is segmented into the 1st section, the 2nd section, the 3rd section ... n-th section, and corresponding signal generating module 1, signal generating module 2, signal are sent out respectively
Raw module 3 ... signal generating module n, according to key-press input numerical value, opens respective value signal generating module, reaches institute
The frequency range wanted.
When key-press input for frequency time, first by single-chip microcomputer determination frequency place frequency range；According to frequency range to corresponding mould
In block, write frequency controls register data；
When key-press input for power time, in current block write power control data, display display ongoing frequency, power
Value.
The instruction such as frequency, power is sent to corresponding module by FPGA, simultaneously drives display display ongoing frequency, power
Value.
Claims (2)
1. the expansible signal generating apparatus of frequency, including n signal generating module, numerical control part, it is characterised in that: described
Numerical control part composed in series by SCM&FPGA, the FPGA of numerical control part connects n signal generating module input, described
Signal generating module variable by phase discriminator, loop filter, voltage controlled oscillator, first order variable gain amplifier and the second level
Gain amplifier is the most uni-directional series connected together, and voltage controlled oscillator output feedback signal and reference signal are input to phase demodulation jointly
Device, phase discriminator carries out ratio phase to two signals, exports ratio phase voltage at phase detector output, is input to loop filtering than phase voltage
The input of device, through loop filter filtering output, loop filter outfan is input to the voltage-controlled end of voltage controlled oscillator, voltage-controlled
Agitator under phase voltage control, exports stable frequency at ratio, and voltage controlled oscillator output signal is input to first order variable gain
Amplifier in, amplified in outfan output, it is variable that first order variable gain amplifier outfan is input to the second level
Gain amplifier input, amplified output.
2. the expansible signal generating method of frequency of the expansible signal generating apparatus of frequency, it is characterised in that: frequency can expand
The method that exhibition signal produces comprises the following steps,
1), judged after receiving the signal of button to single-chip microcomputer write frequency or power, numerical control part single-chip microcomputer by button
Whether frequency signal, in this way, frequency signal, enter frequency service aisle, no, ingoing power service aisle；
2), frequency service aisle
(1), frequency segmentation it is the 1st section, the 2nd section, the 3rd section to n-th section, corresponding first signal generating module, the second letter respectively
Number occur module, the 3rd signal generating module, to the n-th signal generating module, according to key-press input numerical value, open respective value
Signal generating module, reaches desired frequency range, and reference source is simultaneously entered reference frequency signal；
(2), reference frequency signal enter phase discriminator, meanwhile, primary circuit is through the voltage controlled oscillator output stable frequency of phase frequency
Signal is diverted into frequency divider/n；
(3), the divided device/n of shunting signal to phase discriminator carry out with reference frequency signal that phase place is consistent to be compared, loop filter
Output DC voltage, through the frequency signal that voltage controlled oscillator output phase frequency is stable, through the gain amplifier control of two-stage amplifier
System, forms power controllable signal；
3), power service aisle
(1), respective value signal generating module is opened,
(2), instruct to FPGA transmission power control,
(3), FPGA in the signal generating module of work at present, write number,
(4) display display current power value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610319097.1A CN105897257A (en) | 2016-05-13 | 2016-05-13 | Frequency-extendable signal generation device and implementation method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610319097.1A CN105897257A (en) | 2016-05-13 | 2016-05-13 | Frequency-extendable signal generation device and implementation method |
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| Publication Number | Publication Date |
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| CN105897257A true CN105897257A (en) | 2016-08-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610319097.1A Pending CN105897257A (en) | 2016-05-13 | 2016-05-13 | Frequency-extendable signal generation device and implementation method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114422043A (en) * | 2022-03-28 | 2022-04-29 | 成都嘉纳海威科技有限责任公司 | Reliability test device and method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6167245A (en) * | 1998-05-29 | 2000-12-26 | Silicon Laboratories, Inc. | Method and apparatus for operating a PLL with a phase detector/sample hold circuit for synthesizing high-frequency signals for wireless communications |
| CN102324929A (en) * | 2011-04-22 | 2012-01-18 | 中国科学院上海微***与信息技术研究所 | Hopping frequency synthesizer for front end of millimeter wave holographic imaging system |
| CN203387497U (en) * | 2013-08-15 | 2014-01-08 | 同方威视技术股份有限公司 | Sweep signal generation circuit |
| CN103888134A (en) * | 2014-04-09 | 2014-06-25 | 四川九洲电器集团有限责任公司 | Frequency synthesizer capable of achieving low phase noise, low stray and quick change |
| CN205754274U (en) * | 2016-05-13 | 2016-11-30 | 天津光电通信技术有限公司 | A kind of expansible signal generating apparatus of frequency |
-
2016
- 2016-05-13 CN CN201610319097.1A patent/CN105897257A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6167245A (en) * | 1998-05-29 | 2000-12-26 | Silicon Laboratories, Inc. | Method and apparatus for operating a PLL with a phase detector/sample hold circuit for synthesizing high-frequency signals for wireless communications |
| CN102324929A (en) * | 2011-04-22 | 2012-01-18 | 中国科学院上海微***与信息技术研究所 | Hopping frequency synthesizer for front end of millimeter wave holographic imaging system |
| CN203387497U (en) * | 2013-08-15 | 2014-01-08 | 同方威视技术股份有限公司 | Sweep signal generation circuit |
| CN103888134A (en) * | 2014-04-09 | 2014-06-25 | 四川九洲电器集团有限责任公司 | Frequency synthesizer capable of achieving low phase noise, low stray and quick change |
| CN205754274U (en) * | 2016-05-13 | 2016-11-30 | 天津光电通信技术有限公司 | A kind of expansible signal generating apparatus of frequency |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114422043A (en) * | 2022-03-28 | 2022-04-29 | 成都嘉纳海威科技有限责任公司 | Reliability test device and method |
| CN114422043B (en) * | 2022-03-28 | 2022-07-08 | 成都嘉纳海威科技有限责任公司 | Reliability test device and method |
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Application publication date: 20160824 |
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