CN106911347A - A kind of integrated talkback chip and radio frequency carrier frequency production method - Google Patents
A kind of integrated talkback chip and radio frequency carrier frequency production method Download PDFInfo
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- CN106911347A CN106911347A CN201710022735.8A CN201710022735A CN106911347A CN 106911347 A CN106911347 A CN 106911347A CN 201710022735 A CN201710022735 A CN 201710022735A CN 106911347 A CN106911347 A CN 106911347A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
- H04B1/3827—Portable transceivers
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
- H04B1/40—Circuits
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
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Abstract
The invention provides a kind of integrated talkback chip and radio frequency carrier frequency production method, its memory cell is used for storing frequencies deviation, micro-control unit is used for when RF transceiver unit needs to produce radio frequency carrier frequency, reading frequency deviation, and send to RF transceiver unit, the RF local oscillator frequency that RF transceiver unit is used to produce it according to exemplary frequency deviation values is corrected, and produces radio frequency carrier frequency；Based on this, based on the frequency deviation such as frequency deviation deviation data, to carrier wave local frequency, correction realizes the constant of radio frequency carrier frequency and stabilization automatically when chip starts every time, reduces radio-frequency carrier to the high-precision dependence of local oscillator crystal, and then reduce the cost of digital handset.
Description
Technical field
The present invention relates to digital intercom field, more particularly to a kind of integrated talkback chip and radio frequency carrier frequency generation side
Method.
Background technology
In digital intercom field, frequency-invariant, the stabilization of digital communication requirement radio-frequency carrier, the demand needs digital intercom
The local oscillator crystal of radio frequency transceiver produces accurate radio frequency carrier frequency in machine, and it is very high to the requirement of local oscillator crystal, and high request
High cost is often represented, this requirement improves the cost of digital handset.
The content of the invention
The invention provides a kind of integrated talkback chip and radio frequency carrier frequency production method, to reduce digital handset
Cost.
The invention provides a kind of integrated talkback chip for possessing zero intermediate frequency digital communication functions, including：Micro-control unit,
RF transceiver unit and memory cell, memory cell are used for storing frequencies deviation, and micro-control unit is used in radio frequency
When transceiver unit needs to produce radio frequency carrier frequency, reading frequency deviation, and send to RF transceiver unit, radio frequency is received
The RF local oscillator frequency that hair device unit is used to produce it according to exemplary frequency deviation values is corrected, and produces radio frequency carrier frequency.
Further, also including digital serial port module, the frequency that digital serial port module is used to receive external device write-in is inclined
Difference, and transmit to micro-control unit, micro-control unit is used to for exemplary frequency deviation values to write memory cell, and external device is used for
The RF local oscillator frequency that local oscillator crystal in RF transceiver unit is produced is measured, frequency departure is calculated according to measurement result
Value.
Further, also including local frequency detection unit, local frequency detection unit is used to detect RF transceiver list
When target radio frequency carrier frequency is exported, the RF local oscillator frequency that its local oscillator crystal is produced and is transmitted to micro-control unit for unit；It is micro-
Control unit is used for according to RF local oscillator frequency and target radio frequency carrier frequency, is calculated exemplary frequency deviation values, and frequency is inclined
Difference writes memory cell.
Further, memory cell is FLASH memory, and FLASH memory is deposited with the integer data of nybble size
Storage exemplary frequency deviation values.
Further, RF transceiver unit includes local oscillator crystal, correction unit and output unit, and local oscillator crystal is used for root
RF local oscillator frequency is exported according to target radio frequency carrier frequency, correction unit is used to enter RF local oscillator frequency according to exemplary frequency deviation values
Row correction, obtains target radio frequency carrier frequency, and it is the radio-frequency carrier of target radio frequency carrier frequency that output unit is used for output frequency
Signal.
The invention provides a kind of radio frequency carrier frequency production method of digital intercom terminal, digital intercom terminal includes supplying
The integrated talkback chip that power supply and the present invention are provided；Radio frequency carrier frequency production method includes：
Micro-control unit reads memory cell storage when RF transceiver unit needs to produce radio frequency carrier frequency
Exemplary frequency deviation values, and send to RF transceiver unit；
The RF local oscillator frequency that RF transceiver unit is produced according to exemplary frequency deviation values to it is corrected, and produces radio frequency to carry
Wave frequency rate,.
Further, also include：
External device is measured to the RF local oscillator frequency that local oscillator crystal in RF transceiver unit is produced, according to measurement
Result calculates exemplary frequency deviation values；
Digital serial port module receives the exemplary frequency deviation values of external device write-in, and transmits to micro-control unit；
Exemplary frequency deviation values are write memory cell by micro-control unit.
Further, also include：
Local frequency detection unit detect RF transceiver unit export target radio frequency carrier frequency when, its local oscillator crystal
The RF local oscillator frequency of generation, and transmit to micro-control unit；
Micro-control unit is calculated exemplary frequency deviation values according to RF local oscillator frequency and target radio frequency carrier frequency, and will
Exemplary frequency deviation values write memory cell.
Further, memory cell is FLASH memory, and FLASH memory is deposited with the integer data of nybble size
Storage exemplary frequency deviation values.
Further, the RF local oscillator frequency that RF transceiver unit is produced according to exemplary frequency deviation values to it is corrected,
Producing radio frequency carrier frequency includes：
Local oscillator crystal exports RF local oscillator frequency according to target radio frequency carrier frequency；
Correction unit is corrected according to exemplary frequency deviation values to RF local oscillator frequency, obtains target radio frequency carrier frequency；
Output unit output frequency is the radio-frequency carrier signal of target radio frequency carrier frequency.
Beneficial effects of the present invention：
The invention provides a kind of new integrated talkback chip and radio frequency carrier frequency production method, its memory cell is used
In storing frequencies deviation, micro-control unit is used to, when RF transceiver unit needs to produce radio frequency carrier frequency, read frequency
Rate deviation, and send to RF transceiver unit, RF transceiver unit is used for according to penetrating that exemplary frequency deviation values are produced to it
Frequency local frequency is corrected, and produces radio frequency carrier frequency；Based on this, based on frequency deviations such as frequency deviation deviations when chip starts every time
To carrier wave local frequency, correction realizes the constant of radio frequency carrier frequency and stabilization to data automatically, reduces radio-frequency carrier brilliant to local oscillator
The high-precision dependence of body, and then reduce the cost of digital handset.
Brief description of the drawings
The first structural representation for the integrated talkback chip that Fig. 1 is provided for first embodiment of the invention；
Second structural representation of the integrated talkback chip that Fig. 2 is provided for first embodiment of the invention；
The third structural representation for the integrated talkback chip that Fig. 3 is provided for first embodiment of the invention；
The circuit connection diagram of the integrated talkback chip that Fig. 4 is provided for second embodiment of the invention；
The structure connection figure of the integrated talkback chip that Fig. 5 is related to for second embodiment of the invention.
Specific embodiment
The further annotation explanation of output is now done to the present invention by way of specific embodiment combination accompanying drawing.
First embodiment：
Three kinds of structural representations of the integrated talkback chip that Fig. 1-3 is provided for first embodiment of the invention, as shown in Figure 1,
In the present embodiment, the integrated talkback chip that the present invention is provided includes：Micro-control unit 11, RF transceiver unit 12 and storage
Device unit 13, memory cell 13 is used for storing frequencies deviation, and micro-control unit 11 is used to be needed in RF transceiver unit 12
When producing radio frequency carrier frequency, reading frequency deviation, and send to RF transceiver unit 12, RF transceiver unit 12
RF local oscillator frequency for being produced to it according to exemplary frequency deviation values is corrected, and produces radio frequency carrier frequency.
As shown in Fig. 2 in certain embodiments, the integrated talkback chip in above-described embodiment also includes digital serial port module
14, digital serial port module 14 is used to receive the exemplary frequency deviation values of external device write-in, and transmits to micro-control unit, microcontroller list
Unit is used to for exemplary frequency deviation values to write memory cell, and external device is used for what local oscillator crystal in RF transceiver unit was produced
RF local oscillator frequency is measured, and exemplary frequency deviation values are calculated according to measurement result.
As shown in figure 3, in certain embodiments, the integrated talkback chip in above-described embodiment is also detected including local frequency
Unit 15, local frequency detection unit 15 be used for detect RF transceiver unit export target radio frequency carrier frequency when, its
The RF local oscillator frequency that the crystal that shakes is produced, and transmit to micro-control unit；Micro-control unit be used for according to RF local oscillator frequency and
Target radio frequency carrier frequency, is calculated exemplary frequency deviation values, and exemplary frequency deviation values are write into memory cell.In practical application
In, the RF local oscillator frequency that local oscillator crystal is produced can be subject to the influence such as temperature and shift, and the present embodiment is by chip
Portion sets local frequency detection unit 15 with real-time detection (now take into account the influence of temperature) RF local oscillator frequency, calculate with
The difference of target radio frequency carrier frequency, then compensates so that the radio frequency carrier frequency of output is all at each temperature to meet
It is condition, stabilization.
In certain embodiments, the memory cell in above-described embodiment is FLASH memory, and FLASH memory is with four
The integer data storing frequencies deviation of byte-sized.
In certain embodiments, the RF transceiver unit in above-described embodiment includes local oscillator crystal, corrects unit and defeated
Go out unit, local oscillator crystal is used to export RF local oscillator frequency according to target radio frequency carrier frequency, and correction unit is used for according to frequency
Deviation is corrected to RF local oscillator frequency, obtains target radio frequency carrier frequency, and it is target that output unit is used for output frequency
The radio-frequency carrier signal of radio frequency carrier frequency.
A kind of new integrated talkback chip is present embodiments provided, its memory cell is used for storing frequencies deviation, micro-
Control unit is used for when RF transceiver unit needs to produce radio frequency carrier frequency, reading frequency deviation, and sends to penetrating
Frequency transceiver unit, the RF local oscillator frequency that RF transceiver unit is used to produce it according to exemplary frequency deviation values is corrected,
Produce radio frequency carrier frequency；Based on this, based on frequency deviation data such as frequency deviation deviations to carrier wave local frequency when chip starts every time
Automatic correction realizes the constant of radio frequency carrier frequency and stabilization, reduces radio-frequency carrier to the high-precision dependence of local oscillator crystal, enters
And reduce the cost of digital handset.
In certain embodiments, the invention provides a kind of radio frequency carrier frequency production method of digital intercom terminal, number
Word intercommunication terminal includes the integrated talkback chip that power supply and the present invention are provided；Radio frequency carrier frequency production method includes：
Micro-control unit reads memory cell storage when RF transceiver unit needs to produce radio frequency carrier frequency
Exemplary frequency deviation values, and send to RF transceiver unit；
The RF local oscillator frequency that RF transceiver unit is produced according to exemplary frequency deviation values to it is corrected, and produces radio frequency to carry
Wave frequency rate,.
In certain embodiments, the method in above-described embodiment also includes：
External device is measured to the RF local oscillator frequency that local oscillator crystal in RF transceiver unit is produced, according to measurement
Result calculates exemplary frequency deviation values；
Digital serial port module receives the exemplary frequency deviation values of external device write-in, and transmits to micro-control unit；
Exemplary frequency deviation values are write memory cell by micro-control unit.
In certain embodiments, the method in above-described embodiment also includes：
Local frequency detection unit detect RF transceiver unit export target radio frequency carrier frequency when, its local oscillator crystal
The RF local oscillator frequency of generation, and transmit to micro-control unit；
Micro-control unit is calculated exemplary frequency deviation values according to RF local oscillator frequency and target radio frequency carrier frequency, and will
Exemplary frequency deviation values write memory cell.
In certain embodiments, the memory cell in above-described embodiment is FLASH memory, and FLASH memory is with four
The integer data storing frequencies deviation of byte-sized.In actual applications, integer data is with 16 system data storages.
In certain embodiments, the RF transceiver unit in above-described embodiment is according to penetrating that exemplary frequency deviation values are produced to it
Frequency local frequency is corrected, and produces radio frequency carrier frequency to include：
Local oscillator crystal exports RF local oscillator frequency according to target radio frequency carrier frequency；
Correction unit is corrected according to exemplary frequency deviation values to RF local oscillator frequency, obtains target radio frequency carrier frequency；
Output unit output frequency is the radio-frequency carrier signal of target radio frequency carrier frequency.
A kind of radio frequency carrier frequency production method is present embodiments provided, the memory list of its internal integrated talkback chip
Unit is used for storing frequencies deviation, and micro-control unit is used to, when RF transceiver unit needs to produce radio frequency carrier frequency, read
Exemplary frequency deviation values are taken, and is sent to RF transceiver unit, RF transceiver unit is used to produce it according to exemplary frequency deviation values
RF local oscillator frequency be corrected, produce radio frequency carrier frequency；Based on this, based on frequency deviation deviation etc. when chip starts every time
To carrier wave local frequency, correction realizes the constant of radio frequency carrier frequency and stabilization to frequency deviation data automatically, reduces radio-frequency carrier to this
The high-precision dependence of the crystal that shakes, and then reduce the cost of digital handset.
Further annotation explanation is done to the present invention in conjunction with concrete application scene.
3rd embodiment：
The present embodiment also provides a kind of integrated talkback chip for possessing zero intermediate frequency digital communication functions, including：Numeral letter
Number processing unit, voice signal codec unit, sound output amplifier unit, microphone amplifying circuit unit, Wei Chu
Reason device unit, PMU, memory cell, radio frequency mobile radio receiver transmitter unit and communication data
Interface；Radio frequency mobile radio receiver transmitter unit is used to use low pressure broadband voltage controlled technical finesse data, audio output
Power Amplifier Unit is used for exports audio signal；Microphone amplifying circuit unit is used to receive audio signal；Communication data connects
Mouth receives and dispatches the data signal of at least one type based on bus marco rule, and transmits to microprocessor unit；Microprocessor list
Unit is used to control the work of each device in integrated talkback chip；PMU is used to for external voltage to be converted to other chips
Internals required voltage；Digital signal processing unit, voice signal codec unit, sound output amplifier list
Unit, microphone amplifying circuit unit, microprocessor unit, PMU, memory cell, radio frequency mobile radio reception
Machine transmitter unit and communication data interface are integrated on one chip by system level chip technology.
Wherein, communication data interface includes that CAM interfaces, LCD interfaces, KPD interfaces, I2C interfaces, SPI interface, UART connect
At least one in mouth, USB2.0 interfaces, LED drive interface, PWM interfaces, SD/MMC interfaces, GPIO interface, I2S interfaces.
In certain embodiments, the integrated talkback chip in above-described embodiment also includes FM fm broadcast receiver units,
FM fm broadcast receivers unit is used to receive FM fm broadcast signals；FM fm broadcast receivers unit passes through system level chip
Technology is integrated in integrated talkback chip.
In certain embodiments, the integrated talkback chip in above-described embodiment also includes bluetooth radio receiver/transmitter list
Unit, bluetooth radio receiver/transmitter unit is used for bluetooth；Bluetooth radio receiver/transmitter unit passes through system
Level chip technology Integration ofTechnology is in integrated talkback chip.
Specifically, as shown in figure 4, the integrated talkback chip SOC that the present embodiment is provided includes：Digital Signal Processing DSP is mono-
41,16 voice signal codec units 42 of unit, sound output amplifier unit 43, microphone amplifying circuit unit 44,
32 reduced instruction microprocessor units 45, power management PMU units 46,16MB PSRAM memory cells 47,16MB
FLASH memory unit 48 and radio frequency mobile radio receiver transmitter unit 49, and some unshowned data-interfaces
Deng；Wherein, 16MB PSRAM memory cells 47 can exist simultaneously with 16MB FLASH memories unit 48, it is also possible to only deposit
At one；Radio frequency mobile radio receiver transmitter unit 49 is used for using low pressure (2.4V) wideband (100-500MHz, 700-
1000MHz) to realize the transmitting-receiving of wide band signals, power management (PMU) unit 46 provides the external world to voltage-controlled technical finesse data
Voltage (3.2-4.2V, generally 3.7V) be converted to 1.4V and 2.4V voltages, wherein 1.4V voltages supply Digital Signal Processing
(DSP) unit 41,6MB PSRAM memory cells 47,16MB FLASH memories unit 48 are used, and 2.4V voltages supply other lists
Unit uses.
The circuit of the integrated talkback chip that the present embodiment is related to is as shown in figure 5, it is related generally to：As main control module
32-bit RISC XCPU, memory module (FLASH of 32M bits), serial port module (UART) and RF receiving and transmission module VHF/
UHF。
In actual applications, digital communication requirement carrier wave is constant, stable.The demand is higher to the requirement of local oscillator crystal.This reality
The built-in chip type frequency offset correction function of example offer is provided, based on each chip or equipment, frequency deviation data is obtained with instrument, be stored in core
Piece inside flash.Realize that carrier wave is constant, stable to the automatic correction of carrier frequency based on frequency deviation data when chip starts every time, drop
Low radio frequency carrier wave is to the high-precision dependence of local oscillator crystal.
Realization principle：
RF receiving and transmission module is based on local oscillator crystal and produces a radio-frequency carrier local frequency, the frequency values and frequency departure
Can be measured by measuring instrument (can be realized by extraneous computer etc., it is also possible to realized by chip internal element) and obtained；Obtain frequency
After deviation, exemplary frequency deviation values are write by A6FLASH modules by serial port module and is stored, because the power down of FLASH is non-
Volatile characteristic, A6 chips can read the exemplary frequency deviation values after re-powering every time, RF receiving and transmission module is producing radio frequency
Plus the exemplary frequency deviation values it is recoverable carrier frequency during carrier frequency.
In actual applications, each module work-based logic is：
CPU main control modules：After chip electrifying startup, CPU main control modules from FLASH module reading frequency deviations, and to
RF receiving and transmission module transmission frequency sets instruction.
RF receiving and transmission module：After RF receiving and transmission module receives set of frequency instruction, RF local oscillator frequency is set and is counted
Exemplary frequency deviation values.
Serial port module：Numerical value is sent to CPU main control modules after the exemplary frequency deviation values for receiving the serial ports instrument input of PC ends,
CPU main control modules are stored by instructing control FLASH modules to data.
FLASH modules：Data are read out or stored after receiving the instruction of CPU module read-write operation.
In actual applications, the instrument that the present embodiment is used is 8920 comprehensive test instruments.
In actual applications, chip refers to the chip for possessing zero intermediate frequency digital communication functions that the present embodiment is provided, and equipment is
Finger provides the communication terminal device of chip development using the present embodiment.
In actual applications, the form of exemplary frequency deviation values is four integers for byte-sized of the system of use 16
According to.
In summary, by implementation of the invention, at least there is following beneficial effect：
The invention provides a kind of new integrated talkback chip and radio frequency carrier frequency production method, its memory cell is used
In storing frequencies deviation, micro-control unit is used to, when RF transceiver unit needs to produce radio frequency carrier frequency, read frequency
Rate deviation, and send to RF transceiver unit, RF transceiver unit is used for according to penetrating that exemplary frequency deviation values are produced to it
Frequency local frequency is corrected, and produces radio frequency carrier frequency；Based on this, based on frequency deviations such as frequency deviation deviations when chip starts every time
To carrier wave local frequency, correction realizes the constant of radio frequency carrier frequency and stabilization to data automatically, reduces radio-frequency carrier brilliant to local oscillator
The high-precision dependence of body, and then reduce the cost of digital handset.
The above is only specific embodiment of the invention, any formal limitation is not done to the present invention, it is every
Any simple modification made to embodiment of above according to technical spirit of the invention, equivalent variations, with reference to or modification, still
Belong to the protection domain of technical solution of the present invention.
Claims (10)
1. a kind of integrated talkback chip for possessing zero intermediate frequency digital communication functions, it is characterised in that including：Micro-control unit, penetrate
Frequency transceiver unit and memory cell, the memory cell are used for storing frequencies deviation, and the micro-control unit is used for
When the RF transceiver unit needs to produce radio frequency carrier frequency, the exemplary frequency deviation values are read, and transmission is penetrated to described
Frequency transceiver unit, the RF local oscillator frequency that the RF transceiver unit is used to produce it according to the exemplary frequency deviation values is entered
Row correction, produces radio frequency carrier frequency.
2. integrated talkback chip as claimed in claim 1, it is characterised in that also including digital serial port module, the serial data
Mouth mold block is used to receive the exemplary frequency deviation values of external device write-in, and transmits to the micro-control unit, the microcontroller
Unit is used to for the exemplary frequency deviation values to write the memory cell, and the external device is used for the RF transceiver list
The RF local oscillator frequency that local oscillator crystal is produced in unit is measured, and the exemplary frequency deviation values are calculated according to measurement result.
3. integrated talkback chip as claimed in claim 1, it is characterised in that also including local frequency detection unit, described
Vibration frequency detection unit is used to detect the RF transceiver unit when target radio frequency carrier frequency is exported, and its local oscillator crystal is produced
Raw RF local oscillator frequency, and transmit to the micro-control unit；The micro-control unit be used for according to RF local oscillator frequency and
The target radio frequency carrier frequency, is calculated the exemplary frequency deviation values, and the exemplary frequency deviation values are write into the memory
Unit.
4. integrated talkback chip as claimed in claim 1, it is characterised in that the memory cell is FLASH memory, institute
State FLASH memory and the exemplary frequency deviation values are stored with the integer data of nybble size.
5. the integrated talkback chip as described in any one of Claims 1-4, it is characterised in that the RF transceiver unit bag
Local oscillator crystal, correction unit and output unit are included, the local oscillator crystal is used to export radio frequency sheet according to target radio frequency carrier frequency
Vibration frequency, the correction unit is used to be corrected the RF local oscillator frequency according to the exemplary frequency deviation values, obtains described
Target radio frequency carrier frequency, the output unit is believed for the radio-frequency carrier that output frequency is the target radio frequency carrier frequency
Number.
6. the radio frequency carrier frequency production method of a kind of digital intercom terminal, it is characterised in that the digital intercom terminal includes
Power supply and the integrated talkback chip such as any one of claim 1 to 5；The radio frequency carrier frequency production method includes：
Micro-control unit reads the frequency of memory cell storage when RF transceiver unit needs to produce radio frequency carrier frequency
Deviation, and send to RF transceiver unit；
The RF local oscillator frequency that RF transceiver unit is produced according to the exemplary frequency deviation values to it is corrected, and produces radio frequency to carry
Wave frequency rate,.
7. radio frequency carrier frequency production method as claimed in claim 6, it is characterised in that also include：
External device is measured to the RF local oscillator frequency that local oscillator crystal in the RF transceiver unit is produced, according to measurement
Result calculates the exemplary frequency deviation values；
Digital serial port module receives the exemplary frequency deviation values of external device write-in, and transmits to the micro-control unit；
The exemplary frequency deviation values are write the memory cell by the micro-control unit.
8. radio frequency carrier frequency production method as claimed in claim 6, it is characterised in that also include：
Local frequency detection unit detects the RF transceiver unit when target radio frequency carrier frequency is exported, its local oscillator crystal
The RF local oscillator frequency of generation, and transmit to the micro-control unit；
The micro-control unit is calculated the frequency departure according to RF local oscillator frequency and the target radio frequency carrier frequency
Value, and the exemplary frequency deviation values are write into the memory cell.
9. radio frequency carrier frequency production method as claimed in claim 6, it is characterised in that the memory cell is FLASH
Memory, the FLASH memory stores the exemplary frequency deviation values with the integer data of nybble size.
10. the radio frequency carrier frequency production method as described in any one of claim 6 to 9, it is characterised in that the radio-frequency receiving-transmitting
The RF local oscillator frequency that device unit is produced according to the exemplary frequency deviation values to it is corrected, and produces radio frequency carrier frequency to include：
Local oscillator crystal exports RF local oscillator frequency according to target radio frequency carrier frequency；
The correction unit is corrected according to the exemplary frequency deviation values to the RF local oscillator frequency, obtains the target radio frequency
Carrier frequency；
The output unit output frequency is the radio-frequency carrier signal of the target radio frequency carrier frequency.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710022735.8A CN106911347A (en) | 2017-01-12 | 2017-01-12 | A kind of integrated talkback chip and radio frequency carrier frequency production method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710022735.8A CN106911347A (en) | 2017-01-12 | 2017-01-12 | A kind of integrated talkback chip and radio frequency carrier frequency production method |
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Family
ID=59207335
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| CN201710022735.8A Pending CN106911347A (en) | 2017-01-12 | 2017-01-12 | A kind of integrated talkback chip and radio frequency carrier frequency production method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109474298A (en) * | 2018-12-28 | 2019-03-15 | 深圳市华联讯电子有限公司 | Wireless interspeaker radio circuit and frequency calibration system and method based on the circuit |
| CN113852393A (en) * | 2021-09-22 | 2021-12-28 | 深圳市海恒通科技有限公司 | Intercom equipment and working method, working frequency adjusting method and adjusting device thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1220055A (en) * | 1996-05-24 | 1999-06-16 | 国际商业机器公司 | Apparatus, method and article of manufacture for carrier frequency compensation in FM radio receiver |
| CN101888571A (en) * | 2010-07-13 | 2010-11-17 | 深圳市力同亚太科技有限公司 | Integrated talkback chip and integrated talkback system comprising same |
| CN102027672A (en) * | 2008-05-13 | 2011-04-20 | 日本电波工业株式会社 | Oscillator |
| CN102577128A (en) * | 2009-06-03 | 2012-07-11 | 意法爱立信有限公司 | Frequency offset correction |
| CN105227195A (en) * | 2014-05-30 | 2016-01-06 | 展讯通信（上海）有限公司 | A kind of automatic frequency calibration system and calibration steps and mobile terminal |
| CN105720971A (en) * | 2014-12-22 | 2016-06-29 | 英特尔Ip公司 | Coarse tuning selection for phase locked loops |
-
2017
- 2017-01-12 CN CN201710022735.8A patent/CN106911347A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1220055A (en) * | 1996-05-24 | 1999-06-16 | 国际商业机器公司 | Apparatus, method and article of manufacture for carrier frequency compensation in FM radio receiver |
| CN102027672A (en) * | 2008-05-13 | 2011-04-20 | 日本电波工业株式会社 | Oscillator |
| CN102577128A (en) * | 2009-06-03 | 2012-07-11 | 意法爱立信有限公司 | Frequency offset correction |
| CN101888571A (en) * | 2010-07-13 | 2010-11-17 | 深圳市力同亚太科技有限公司 | Integrated talkback chip and integrated talkback system comprising same |
| CN105227195A (en) * | 2014-05-30 | 2016-01-06 | 展讯通信（上海）有限公司 | A kind of automatic frequency calibration system and calibration steps and mobile terminal |
| CN105720971A (en) * | 2014-12-22 | 2016-06-29 | 英特尔Ip公司 | Coarse tuning selection for phase locked loops |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109474298A (en) * | 2018-12-28 | 2019-03-15 | 深圳市华联讯电子有限公司 | Wireless interspeaker radio circuit and frequency calibration system and method based on the circuit |
| CN113852393A (en) * | 2021-09-22 | 2021-12-28 | 深圳市海恒通科技有限公司 | Intercom equipment and working method, working frequency adjusting method and adjusting device thereof |
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Application publication date: 20170630 |