CN110011676A - Radio transmitter automatic patching system - Google Patents
Radio transmitter automatic patching system Download PDFInfo
- Publication number
- CN110011676A CN110011676A CN201910440332.4A CN201910440332A CN110011676A CN 110011676 A CN110011676 A CN 110011676A CN 201910440332 A CN201910440332 A CN 201910440332A CN 110011676 A CN110011676 A CN 110011676A
- Authority
- CN
- China
- Prior art keywords
- signal
- load
- radio transmitter
- patching system
- power amplification
- 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.)
- Granted
Links
- 230000003321 amplification Effects 0.000 claims abstract description 18
- 238000003199 nucleic acid amplification method Methods 0.000 claims abstract description 18
- 238000004458 analytical method Methods 0.000 claims abstract description 4
- 238000005070 sampling Methods 0.000 claims abstract description 3
- 230000004048 modification Effects 0.000 claims description 4
- 238000012986 modification Methods 0.000 claims description 4
- 230000000191 radiation effect Effects 0.000 abstract description 3
- 230000000694 effects Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 239000003990 capacitor Substances 0.000 description 2
- 235000013399 edible fruits Nutrition 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
Classifications
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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
- H04B1/02—Transmitters
- H04B1/04—Circuits
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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
- H04B1/02—Transmitters
- H04B1/04—Circuits
- H04B1/0458—Arrangements for matching and coupling between power amplifier and antenna or between amplifying stages
-
- 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
- H04B1/02—Transmitters
- H04B1/04—Circuits
- H04B2001/0408—Circuits with power amplifiers
-
- 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
- H04B1/02—Transmitters
- H04B1/04—Circuits
- H04B2001/0491—Circuits with frequency synthesizers, frequency converters or modulators
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Transmitters (AREA)
- Amplifiers (AREA)
Abstract
The present invention provides a kind of radio transmitter automatic patching system, including radiofrequency signal is amplified RF power amplification, between RF power amplification and load carry out impedance matching match circuit, it further include directional coupler, for being sampled to transmitting signal and load reflection signal；A/D converter, for carrying out digitized sampling to transmitting sampled signal and load reflection sampled signal；Signal processor, for analyzing digitized samples signal；Controller, for adjusting RF power amplification and/or match circuit according to the data information after analysis.This system is suitable for the matching between radio-frequency power amplifier and load and adjusts and optimize, and when load is antenna, can improve the radiation effect of emission system, while protecting power amplifier safe.
Description
Technical field
The invention mainly relates to radio transmitter correlative technology fields, specifically without electric wire transmitter Auto-matching system
System.
Background technique
Matching in radio transmitter between antenna is easy to be influenced by the variation of the factors such as ambient enviroment, antenna.Such as
This influence of fruit keeps the former design value of the deviation of the matching between RF power amplification and antenna very much, will cause the decline of launching target, very
To causing power amplifier to burn.So as described in Figure 1, power amplifier design person can reduce antenna mismatch to power amplifier using isolator at present
Adverse effect.Isolator can only protect power amplifier to be unlikely to burn, and the matching at antennal interface can not be made optimal, also just without decree
The radiation of emission system entirety is optimal.
Summary of the invention
For the deficiency for solving current technology, the present invention combination prior art provides a kind of radio from practical application
Transmitter automatic patching system, this system is suitable for the matching between radio-frequency power amplifier and load and adjusts and optimize, when negative
When load is antenna, the radiation effect of emission system can be improved, while protecting power amplifier safe.
Technical scheme is as follows:
Radio transmitter automatic patching system, including radiofrequency signal is amplified RF power amplification, RF power amplification
Between load carry out impedance matching match circuit, further include
Directional coupler, for being sampled to transmitting signal and load reflection signal；
A/D converter, for carrying out digitized sampling to transmitting sampled signal and load reflection sampled signal；
Signal processor, for analyzing digitized samples signal；
Controller, for adjusting RF power amplification and/or match circuit according to the data information after analysis.
Further, the signal processor is specifically used for: signal progress operation is obtained to include that amplitude and phase are believed
The actual loading value of breath.
Further, the controller is specifically used for: according to actual loading value and target load value on Smith chart
Relative position carry out Matching and modification.
Further, the controller also particularly useful for: if physical location offset target position, by adjusting matching
Circuit is modified, until positional shift is less than predetermined threshold value.
Further, the controller also particularly useful for: when can not make by adjusting match circuit physical location offset it is small
When predetermined threshold value, guard mode is closed or entered to control RF power amplification.
Further, filter and amplifier can be increased in the A/D converter.
Further, the load is antenna.
Beneficial effects of the present invention:
The present invention is led to by increasing directional coupler, A/D converter, signal processor and controller in matching system
The amplitude and angle information for crossing acquisition and analysis load transmitting signal, obtain the position being supported on Smith chart, such as fruit
Border positional shift target value is then corrected by adjusting match circuit, until positional shift is less than predetermined threshold value, can allow hair
It penetrates system and keeps preferable launching effect in the case where antenna impedance variation；Simultaneously when controller can not be repaired by match circuit
When just arriving allowed band, it can control power amplifier and close or enter guard mode, power amplifier is avoided to damage.
Detailed description of the invention
Attached drawing 1 is existing isolator schematic structure diagram；
Attached drawing 2 is inventive structure figure；
Attached drawing 3 is matching network schematic diagram one；
Attached drawing 4 is matching network schematic diagram two.
Specific embodiment
With reference to the drawings and specific embodiments, the invention will be further described.It should be understood that these embodiments are merely to illustrate
The present invention rather than limit the scope of the invention.In addition, it should also be understood that, after reading the content taught by the present invention, this field
Technical staff can make various changes or modifications the present invention, and such equivalent forms equally fall within range defined herein.
As shown in Fig. 2, RF power amplification, match circuit, directional coupler and antenna are sequentially connected in the present invention, coupling is oriented
Clutch, A/D sampler, signal processor and controller are sequentially connected, and wherein match circuit and directional coupler can exchange position
It sets, i.e., RF power amplification, directional coupler, match circuit, antenna can also be sequentially connected, it can be according to practical feelings in A/D converter
Condition increases filter and amplifier.
In the present invention, RF power amplification generation will be radiated aerial rf power signal；
Match circuit is load impedance value needed for RF power amplification the impedance conversion of antenna；
On the one hand the power signal that RF power amplification exports is passed to antenna, while exporting and believing to power amplifier by directional coupler
It number is sampled, (sampled signal hereinafter referred to as SampleF)；On the other hand the signal of antenna-reflected is acquired (hereinafter referred to as
SampleR).Finally SampleF and SampleR are exported to A/D converter；
Rf power signal is radiated space by antenna；
A/D converter is suitable for digital signal needed for converting analog signals into subsequent processor；
Signal processor performs mathematical calculations SampleF and SampleR, obtains actual loading value, SampleR/
The amplitude and phase information of SampleF；
Controller generates decision and control signal, commands power amplifier and matching according to actual loading value and targeted loads information
Circuit work.
It is of the invention that the specific working principle is as follows:
If the actual loading value (S11) at directional coupler is load, then
Load=SampleR/SampleF
Wherein load is vector, is enabled
SampleF=A1*cos(wt+θ1)
SampleR=A2*cos(wt+θ2)
Load=amp*ejθ, then
Amp=| A2|/|A1|,
θ=θ2-θ1。
If load deviates desired load load_opt at this time, can be according to opposite position of the two on Smith chart
Carry out Matching and modification is set, comes back to load or close to load_opt.
Matching network of the invention can be L-type, as shown in figure 3,
Wherein, port IN connects the output of RF power amplification, and port OUT connects load.L1/C1 plays matching effects, and controller can be with
The inductance value of the capacitance or L1 that control C1 changes matching effect.
If control capacitance, a kind of feasible scheme be C1 with variable capacitance element, as shown in figure 4,
Wherein C2/C3 is coupled capacitor, and D1 is varactor, and L1 is matching inductance.If changing CONTROL voltage value, become
The capacitor for holding diode D1 will change, so that the load impedance of the port IN be made to change.
In some cases, the value for only changing C1 is not able to satisfy load matched to ideal range, at this moment can be introduced more
Complicated matching network, such as Π type matching network etc.；The element of adjusting can also be expanded to the joint debugging of inductance value.Work as controller
When can not make power amplifier load matched to minimum allowed band, it can control power amplifier and close or enter guard mode, avoid power amplifier
Damage.
The present invention is suitble to the matching between radio-frequency power amplifier and load to adjust and optimize.When load is antenna, energy
Improve the radiation effect of emission system, while protecting power amplifier safe.
Claims (7)
1. radio transmitter automatic patching system, including radiofrequency signal is amplified RF power amplification, RF power amplification and
The match circuit of impedance matching is carried out between load, which is characterized in that further include
Directional coupler, for being sampled to transmitting signal and load reflection signal；
A/D converter, for carrying out digitized sampling to transmitting sampled signal and load reflection sampled signal；
Signal processor, for analyzing digitized samples signal；
Controller, for adjusting RF power amplification and/or match circuit according to the data information after analysis.
2. radio transmitter automatic patching system as described in claim 1, which is characterized in that the signal processing implement body
For: by signal progress operation obtain include amplitude and phase information actual loading value.
3. radio transmitter automatic patching system as claimed in claim 2, which is characterized in that the control implement body is used
In: Matching and modification is carried out according to the relative position of actual loading value and target load value on Smith chart.
4. radio transmitter automatic patching system as claimed in claim 3, which is characterized in that the controller is also specifically used
In: if physical location offset target position, is modified by adjusting match circuit, until positional shift is less than pre- gating
Limit value.
5. radio transmitter automatic patching system as claimed in claim 4, which is characterized in that the controller is also specifically used
In: when can not make by adjusting match circuit physical location offset be less than predetermined threshold value when, control RF power amplification close or into
Enter guard mode.
6. radio transmitter automatic patching system as described in claim 1, which is characterized in that can in the A/D converter
Increase filter and amplifier.
7. radio transmitter automatic patching system as described in any one of claims 1 to 6, which is characterized in that the load
For antenna.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910440332.4A CN110011676B (en) | 2019-05-24 | 2019-05-24 | Automatic matching system for radio transmitter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910440332.4A CN110011676B (en) | 2019-05-24 | 2019-05-24 | Automatic matching system for radio transmitter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110011676A true CN110011676A (en) | 2019-07-12 |
| CN110011676B CN110011676B (en) | 2024-01-30 |
Family
ID=67177801
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910440332.4A Active CN110011676B (en) | 2019-05-24 | 2019-05-24 | Automatic matching system for radio transmitter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110011676B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5564086A (en) * | 1993-11-29 | 1996-10-08 | Motorola, Inc. | Method and apparatus for enhancing an operating characteristic of a radio transmitter |
| CN101800561A (en) * | 2010-01-25 | 2010-08-11 | 中兴通讯股份有限公司 | Impedance matching device and method |
| CN103546600A (en) * | 2013-10-29 | 2014-01-29 | 华为终端有限公司 | Matching parameter processing method and mobile terminal |
| CN106487414A (en) * | 2016-09-20 | 2017-03-08 | 青岛海信移动通信技术股份有限公司 | A kind of radio circuit and mobile terminal |
-
2019
- 2019-05-24 CN CN201910440332.4A patent/CN110011676B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5564086A (en) * | 1993-11-29 | 1996-10-08 | Motorola, Inc. | Method and apparatus for enhancing an operating characteristic of a radio transmitter |
| CN101800561A (en) * | 2010-01-25 | 2010-08-11 | 中兴通讯股份有限公司 | Impedance matching device and method |
| CN103546600A (en) * | 2013-10-29 | 2014-01-29 | 华为终端有限公司 | Matching parameter processing method and mobile terminal |
| CN106487414A (en) * | 2016-09-20 | 2017-03-08 | 青岛海信移动通信技术股份有限公司 | A kind of radio circuit and mobile terminal |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110011676B (en) | 2024-01-30 |
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