CN106936457A - It is applied to the quadrature mismatch correction system of radio-frequency transmitter - Google Patents
It is applied to the quadrature mismatch correction system of radio-frequency transmitter Download PDFInfo
- Publication number
- CN106936457A CN106936457A CN201511035366.3A CN201511035366A CN106936457A CN 106936457 A CN106936457 A CN 106936457A CN 201511035366 A CN201511035366 A CN 201511035366A CN 106936457 A CN106936457 A CN 106936457A
- Authority
- CN
- China
- Prior art keywords
- frequency
- signal
- radio
- output end
- comparator
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- 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
- H04B1/06—Receivers
- H04B1/16—Circuits
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Transmitters (AREA)
Abstract
The invention provides a kind of quadrature mismatch correction system for being applied to radio-frequency transmitter, the wireless receiving that it includes signal electrical connection successively its, radio-frequency front-end loader, signal filter and segmentation variable-frequency filtering module；The output end of the segmentation variable-frequency filtering module is connected with frequency amplifier, and the output end of the frequency amplifier is connected with frequency comparator, and the output signal of the frequency comparator is exported by intermediate frequency demodulation module, and the output end is connected with ADC output circuits.The signal that the quadrature mismatch correction system for being applied to radio-frequency transmitter of the present invention will can be received fast and accurately is processed, simultaneously as the use of the overall hardware of the system is all fairly simple, so not only reduce the time of signal correction, can also ensure to export the signal for meeting regulation with this according to the different parameter references required between adjustment circuit at any time of correction accuracy.
Description
Technical field
The invention belongs to microwave/millimeter wave devices field, radio-frequency transmitter is applied to more particularly, to one kind
Quadrature mismatch correction system.
Background technology
Radio-frequency transmitter is the abbreviation that a kind of high-frequency ac changes electromagnetic wave.Change per second is less than 1000 times
Alternating current be referred to as low-frequency current, be referred to as high frequency electric more than 10000 times, and radio frequency is exactly such one
Plant high frequency electric.Radio-frequency technique has extensive, irreplaceable effect in wireless communication field.
In theory of electronics, electric current flows through conductor, and magnetic field can be formed around conductor；Alternating current passes through conductor,
The electromagnetic field of alternation, referred to as electromagnetic wave can be formed around conductor.
But out and during being received need to carry out this radiofrequency signal in emission of radio frequency signals
Treatment and correction could really be applied.
The content of the invention
In view of this, the present invention is directed to propose a kind of quadrature mismatch correction system for being applied to radio-frequency transmitter
System, to solve the Correction Problemss of radiofrequency signal.
To reach above-mentioned purpose, the technical proposal of the invention is realized in this way：
The quadrature mismatch correction system of radio-frequency transmitter is applied to, it includes the wireless of signal electrical connection successively
Receive its, radio-frequency front-end loader, signal filter and segmentation variable-frequency filtering module；
The output end of the segmentation variable-frequency filtering module is connected with frequency amplifier, the frequency amplifier
Output end is connected with frequency comparator, and the output signal of the frequency comparator is defeated by intermediate frequency demodulation module
Go out, the output end is connected with ADC output circuits.
Further, the output signal of the wireless receiver is described by being also connected with signal holder
The output end of signal holder is connected with ADC output circuit signals, at the same also with the output of frequency comparator
End connection.
Further, mixting circuit current divider is additionally provided between the frequency amplifier and frequency comparator,
The low-voltage output end of the mixting circuit current divider electrically connects with the frequency comparator.
Relative to prior art, the quadrature mismatch correction system for being applied to radio-frequency transmitter of the present invention
Have the advantage that：
The letter that the quadrature mismatch correction system for being applied to radio-frequency transmitter of the present invention will can be received
Number fast and accurately process, simultaneously as the use of the overall hardware of the system is all fairly simple, so
Not only reduce the time of signal correction, moreover it is possible to according to correction accuracy it is different require at any time adjustment circuit it
Between parameter reference, ensure to export the signal for meeting regulation with this.
Brief description of the drawings
The accompanying drawing for constituting a part of the invention is used for providing a further understanding of the present invention, of the invention
Schematic description and description does not constitute inappropriate limitation of the present invention for explaining the present invention.
In accompanying drawing：
Fig. 1 is the quadrature mismatch correction system flow for being applied to radio-frequency transmitter described in the embodiment of the present invention
Figure.
Description of reference numerals：
1- wireless receivers；2- radio-frequency front-end loaders；3- signal holders；4- signal filters；5-
Segmentation variable-frequency filtering module；6- frequency amplifiers；7- frequency comparators；8- intermediate frequency demodulation modules；9-ADC
Output.
Specific embodiment
It should be noted that in the case where not conflicting, the embodiment in the present invention and the spy in embodiment
Levying to be mutually combined.
In the description of the invention, it is to be understood that term " " center ", " longitudinal direction ", " transverse direction ",
" on ", D score, "front", "rear", "left", "right", " vertical ", " level ",
The orientation or position relationship of the instruction such as " top ", " bottom ", " interior ", " outward " are based on shown in accompanying drawing
Orientation or position relationship, be for only for ease of the description present invention and simplify and describe, rather than indicating or dark
Show meaning device or element must have specific orientation, with specific azimuth configuration and operation, therefore
It is not considered as limiting the invention.Additionally, term " first ", " second " etc. are only used for description
Purpose, and it is not intended that indicating or implying relative importance or imply to indicate indicated technical characteristic
Quantity.Thus, the feature for defining " first ", " second " etc. can be expressed or impliedly wrap
Include one or more this feature.In the description of the invention, unless otherwise indicated, " multiple "
It is meant that two or more.
In the description of the invention, it is necessary to illustrate, unless otherwise clearly defined and limited, term
" installation ", " connected ", " connection " should be interpreted broadly, for example, it may be fixedly connected,
Can be detachably connected, or be integrally connected；Can mechanically connect, or electrically connect；Can
Being to be joined directly together, it is also possible to be indirectly connected to by intermediary, can be two connections of element internal.
For the ordinary skill in the art, by concrete condition above-mentioned term can be understood in the present invention
In concrete meaning.
Describe the present invention in detail below with reference to the accompanying drawings and in conjunction with the embodiments.
The quadrature mismatch correction system of radio-frequency transmitter is applied to, it includes the wireless of signal electrical connection successively
Receiver 1, radio-frequency front-end loader 2, signal filter 3 and segmentation variable-frequency filtering module 5；
The output end of the segmentation variable-frequency filtering module 5 is connected with frequency amplifier 6, and the frequency is amplified
The output end of device 6 is connected with frequency comparator 7, and the output signal of the frequency comparator 6 passes through intermediate frequency solution
Mode transfer block 8 and export, the output end is connected with ADC output circuits 9.
By being also connected with signal holder 3, the signal is stored up the output signal of the wireless receiver 1
The output end of storage 3 is connected with the signal of ADC output circuits 9, at the same also with the output of frequency comparator 7
End connection.
Mixting circuit current divider is additionally provided between the frequency amplifier 6 and frequency comparator 7, it is described mixed
The low-voltage output end of frequency circuit current divider electrically connects with the frequency comparator 7.
Presently preferred embodiments of the present invention is the foregoing is only, is not intended to limit the invention, it is all at this
Within the spirit and principle of invention, any modification, equivalent substitution and improvements made etc. should be included in
Within protection scope of the present invention.
Claims (3)
1. the quadrature mismatch correction system of radio-frequency transmitter is applied to, it is characterised in that：Including believing successively
Number electrical connection wireless receiver (1), radio-frequency front-end loader (2), signal filter (3) and
Segmentation variable-frequency filtering module (5)；
The output end of segmentation variable-frequency filtering module (5) is connected with frequency amplifier (6), the frequency
The output end of rate amplifier (6) is connected with frequency comparator (7), the frequency comparator (6) it is defeated
Go out signal to be exported by intermediate frequency demodulation module (8), the output end is with ADC output circuits (9) even
Connect.
2. the quadrature mismatch correction system for being applied to radio-frequency transmitter according to claim 1, its
It is characterised by：The output signal of the wireless receiver (1) passes through also to be connected with signal holder (3),
The output end of the signal holder (3) is connected with ADC output circuits (9) signal, at the same also with frequency
The output end connection of rate comparator (7).
3. the quadrature mismatch correction system for being applied to radio-frequency transmitter according to claim 1, its
It is characterised by：Mixting circuit point is additionally provided between the frequency amplifier (6) and frequency comparator (7)
Stream device, the low-voltage output end of the mixting circuit current divider electrically connects with the frequency comparator (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511035366.3A CN106936457A (en) | 2015-12-31 | 2015-12-31 | It is applied to the quadrature mismatch correction system of radio-frequency transmitter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511035366.3A CN106936457A (en) | 2015-12-31 | 2015-12-31 | It is applied to the quadrature mismatch correction system of radio-frequency transmitter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106936457A true CN106936457A (en) | 2017-07-07 |
Family
ID=59444421
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201511035366.3A Pending CN106936457A (en) | 2015-12-31 | 2015-12-31 | It is applied to the quadrature mismatch correction system of radio-frequency transmitter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106936457A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109861706A (en) * | 2019-02-27 | 2019-06-07 | 中国电子科技集团公司第五十四研究所 | A kind of broadband zero intermediate frequency reciver quadrature mismatch compensation device and method |
-
2015
- 2015-12-31 CN CN201511035366.3A patent/CN106936457A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109861706A (en) * | 2019-02-27 | 2019-06-07 | 中国电子科技集团公司第五十四研究所 | A kind of broadband zero intermediate frequency reciver quadrature mismatch compensation device and method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7761115B2 (en) | Multiple mode RF transceiver and antenna structure | |
| US9154192B2 (en) | Method for controlling a modulation index of a near field communication device with aid of dynamic calibration, and associated apparatus | |
| US20150065043A1 (en) | Short-distance contactless communication apparatus and method thereof | |
| CN106537790B (en) | High-frequency model | |
| CN206164476U (en) | Ultra wide band millimeter wave down coversion system | |
| US20200007181A1 (en) | Compensator, electronic circuit assembly for operating an antenna, and antenna device | |
| CN109560837B (en) | Method and system for operating a communication device communicating through inductive coupling | |
| CN106165305B (en) | High-frequency front-end circuit | |
| CN106936457A (en) | It is applied to the quadrature mismatch correction system of radio-frequency transmitter | |
| CN101976764A (en) | Co-site coupling interference tracking and cancelling device | |
| CN106301399B (en) | Mobile terminal, antenna assembly and radio-frequency front-end ballistic device | |
| CN211019020U (en) | Anti-interference frequency demultiplier | |
| US10818996B1 (en) | Inductive radio frequency power sampler | |
| CN107222221A (en) | A kind of radio circuit and electronic equipment | |
| CN102315885B (en) | Signal strength sensing device, relevant method thereof and communication system | |
| CN108141242A (en) | High-frequency front-end circuit and impedance matching methods | |
| CN104993235A (en) | Antenna apparatus and electronic equipment | |
| US20060119530A1 (en) | Antenna structure | |
| CN106936455A (en) | The quadrature mismatch bearing calibration of receiver in radio frequency transceiver | |
| CN209731218U (en) | A kind of Zigbee module and electronic equipment | |
| CN203691349U (en) | Cross-band signal source assembly | |
| CN106356627A (en) | Method for combining coaxial feeders of vehicle-mounted GPS and 4G antennae | |
| CN206022618U (en) | A kind of vehicle GPS and 4G antennas merge coaxial feeder device | |
| US20230077067A1 (en) | Wireless power transmitting device and method for detecting approaching object by wireless power transmitting device | |
| CN110620595B (en) | Receiver and related signal processing method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20170707 |
|
| WD01 | Invention patent application deemed withdrawn after publication |