CN209046597U - Radio-frequency power amplifier ON-OFF control circuit, radio-frequency front-end transmitting link and receives link - Google Patents
Radio-frequency power amplifier ON-OFF control circuit, radio-frequency front-end transmitting link and receives link Download PDFInfo
- Publication number
- CN209046597U CN209046597U CN201821810449.4U CN201821810449U CN209046597U CN 209046597 U CN209046597 U CN 209046597U CN 201821810449 U CN201821810449 U CN 201821810449U CN 209046597 U CN209046597 U CN 209046597U
- Authority
- CN
- China
- Prior art keywords
- radio
- frequency power
- power amplifier
- control circuit
- input terminal
- 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.)
- Active
Links
Landscapes
- Amplifiers (AREA)
- Transmitters (AREA)
Abstract
The utility model relates to radio communication technology fields, and in particular to a kind of radio-frequency power amplifier ON-OFF control circuit, radio-frequency front-end transmitting link and receives link.The radio-frequency power amplifier ON-OFF control circuit includes the coupler being sequentially connected electrically, signal amplifier, wave detector, comparator and analog switch, radio-frequency input signals is detected by radio-frequency power amplifier ON-OFF control circuit to judge to emit whether link/receives link is in transmitting communication/reception communications status, and then transmitting link/receives link radio-frequency power amplifier power supply is switched, therefore in the standby mode not communicated, the state that transmitting link/receives link radio-frequency power amplifier is just off, realize radio communications system transmitting link/receives link low-power consumption effect.
Description
Technical field
The utility model relates to radio communication technology fields, and in particular to a kind of radio-frequency power amplifier switch control electricity
Road, radio-frequency front-end transmitting link and receives link.
Background technique
In time division multiple acess (TDMA) system, the transmitting and reception of signal are discontinuous, and in the period in gap
Transceiver channel can then be in standby mode, therefore reduction stand-by power consumption just becomes particularly important.Especially in battery powered system
In system, stand-by power consumption will be directly related to the stand-by time of equipment.
In the radio system of time division multiple acess, power consumption is mainly derived from the radio-frequency power amplifier of transmitting link, and leads to
The mode of normally-off radio-frequency power amplifier are as follows: base band provides TTL control signal and opens the power supply of radio-frequency power amplifier
Close control.But in the occasion more demanding to system response time, the power supply of direct modulated RF power amplifier is difficult reality
Existing requirement of the system to switch time, but if opening radio-frequency power amplifier length, there will be biggish quiescent dissipations.With output
For power is the radio-frequency power amplifier of 10W, quiescent dissipation can reach the magnitude of several watts, just cannot achieve low-power consumption in this way
Reactive power consumption that is standby and leading to energy.
In addition in the Integrated Service Digital Network system of wireless communication, since radiofrequency signal and power feed are all by a coaxial line
It is fed into radio-frequency front-end, just carries out power switch without radio-frequency power amplifier of the TTL control signal to radio-frequency front-end in this way, and
Directly turn off the drawbacks of power supply can have the response time again and not catch up with, therefore tradition is using the system standby power consumption of Integrated Service Digital Network
It is all bigger.
Utility model content
In view of this, in order to overcome the above-mentioned deficiencies of the prior art, the utility model is to transmitting link/receives link work
The power switch control for making mode and radio-frequency power amplifier is optimized and improves, so as in entire transmitting chain
Under the premise of road/receives link quick response, TDMA (TimeDivisionMultipleAccess time division multiple acess) system is reduced
Stand-by power consumption.
In order to solve the above technical problems, technical solution provided by the utility model is a kind of radio-frequency power amplifier switch control
Circuit processed, which is characterized in that including coupler, signal amplifier, wave detector, comparator and the analog switch being sequentially connected electrically,
Wherein, the input terminal of the coupler is electrically connected with radiofrequency signal input link, the first output end of the coupler and described
The output end of analog switch is electrically connected with the input terminal of the radio-frequency power amplifier respectively, the second output terminal of the coupler
It is electrically connected with the input terminal of the signal amplifier.
Preferably, the input terminal of the first output end of the coupler and the radio-frequency power amplifier passes through capacitor C14
Electrical connection.
Preferably, the second output terminal of the coupler and the input terminal of the signal amplifier are electrically connected by capacitor C6
It connects, the input terminal of the signal amplifier is grounded after also passing through inductance L1.
Preferably, the output end of the signal amplifier passes sequentially through defeated with the wave detector after capacitor C7, capacitor C5
Enter end to be electrically connected, the connection circuit of the capacitor C7 and the capacitor C5 after resistance R3 by being grounded.
Preferably, it is electrically connected between the output end of the wave detector and the input terminal of the comparator by resistance R1；By
Parallel circuit one end ground connection of capacitor C4 and resistance R2 composition, the other end are connected to the input of the resistance R1 and the comparator
On the connection circuit at end.
Preferably, the output end of the comparator is electrically connected with the input terminal of the analog switch by resistance R6.
Preferably, the output end of the analog switch amplifies after passing sequentially through inductance L2, resistance R7 with the radio-frequency power
The input terminal of device is electrically connected；The input terminal of the radio-frequency power amplifier is grounded after also passing through capacitor C10.
Preferably, the energization pins of the analog switch are in series with microfarad range or nanofarad range capacitor.
The utility model also provides a kind of radio-frequency front-end transmitting link, including above-mentioned radio-frequency power amplifier switch control
Circuit.
The utility model also provides a kind of radio-frequency front-end receives link, including above-mentioned radio-frequency power amplifier switch control
Circuit.
The application compared with prior art, detailed description are as follows for its advantages: put using radio-frequency power by the utility model
Big device ON-OFF control circuit detection radio-frequency input signals emits communication/reception communications status to determine whether being in, and then to hair
It penetrates link/receives link radio-frequency power amplifier power supply to be switched, therefore in the standby mode not communicated, transmitting chain
The state that road/receives link radio-frequency power amplifier is just off realizes radio system transmitting link/receives link
The effect of low-power consumption.
Detailed description of the invention
Fig. 1 is the radio-frequency power amplifier ON-OFF control circuit schematic diagram that the utility model embodiment 1 provides；
Fig. 2 is the radio-frequency power amplifier ON-OFF control circuit circuit diagram that the utility model embodiment 2 provides.
Specific embodiment
In order to make those skilled in the art more fully understand the technical solution of the utility model, with reference to the accompanying drawing and have
The utility model is described in further detail for body embodiment.
As shown in Figure 1, the utility model embodiment 1 provides a kind of radio-frequency power amplifier ON-OFF control circuit, including according to
Coupler, signal amplifier, wave detector, comparator and the analog switch of secondary electrical connection, wherein the input terminal and radio frequency of coupler
The output end of the electrical connection of signal input link, the first output end of coupler and analog switch respectively with radio-frequency power amplifier
Input terminal electrical connection, the second output terminal of coupler are electrically connected with the input terminal of signal amplifier.Wherein, radiofrequency signal inputs chain
Road can may be receives link for transmitting chain road.
The working method of radio-frequency power amplifier ON-OFF control circuit are as follows: when thering is radiofrequency signal to generate and inputting, coupling
Portion of energy is just coupled to detection branch by device, and signal power is amplified to the detectable level of wave detector by signal amplifier
Then range completes the transformation from radiofrequency signal to low frequency envelope signal by wave detector, is arranged using comparator switchs later
Thresholding simultaneously exports TTL or CMOS level to analog switch, finally by the grid of analog switch control radio-frequency power amplifier to
Realization switchs the power supply of radio-frequency power amplifier.
In radio-frequency power amplifier ON-OFF control circuit, the device that coupler preferably selects the degree of coupling relatively low, in this way
The gain requirement of the signal amplifier to detection branch can be reduced.The signal amplifier of detection branch is needed in system standby
In static state, so preferably selecting P1dB lower and the higher power down signal amplifier of gain.The transmitting of many systems
Power/reception power can be a dynamic range, therefore preferably select with wide dynamic rapid response type wave detector, external core
It is 25ns and the device with 35dB dynamic range that, which there is the response time in piece company,.Comparator can select switch time several
The device of nanosecond still needs to selection rapid response type as analog switch, in practice can be according to the classification of radio-frequency power amplifier
The device for selecting switch positive pressure or negative pressure can choose the device that switch time is 30ns or so in the market.It is entire in this way
The response time of radio-frequency power amplifier ON-OFF control circuit can select sound within 100ns according to actual needs
Device further decreases response time of radio-frequency power amplifier ON-OFF control circuit faster between seasonable.
As shown in Fig. 2, the utility model embodiment 2 provides a kind of radio-frequency power amplifier ON-OFF control circuit, setting exists
Transmitting chain road, according to the parameter of the transmitting link, radio-frequency power amplifier ON-OFF control circuit to the type selectings of main devices such as
Under: transmitting link: coupler W1:BDCN-7-25+, transmitting output end: radio-frequency power amplifier A1:NCE28S；Detection branch:
Signal amplifier N1:NCE17Q, wave detector N2:LT5534ESC6, comparator N3:ADCMP608BKSZ, analog switch N4:
ADG619BRT。
Specifically, the input terminal IN pin electrical connection transmitting link RFin of coupler W1, i.e., the transmitting signal to be received such as,
CPR pin is grounded after passing through resistance R8, and the first output end OT pin passes through the input terminal of capacitor C14 and radio-frequency power amplifier A1
The electrical connection of IN pin, capacitor C14 can be used for the filtering of design frequency section for blocking, filtering, and second output terminal CPF pin passes through
Capacitor C6 is electrically connected with the input terminal RFin pin of signal amplifier N1, and the RFin pin of signal amplifier N1 also passes through inductance L1
After be grounded, realize LC filtering matching.
+ 3V power supply is successively electrically connected with the 17th of signal amplifier N1, the 18th pin and the one end capacitor C1, and capacitor C1 is another
End successively be electrically connected with VCC1 pin, VCC2 pin and the one end capacitor C2, and the capacitor C2 other end is grounded, and the of signal amplifier N1
1 pin and the 2nd pin are also grounded, the output end RFout pin of signal amplifier N1 pass sequentially through after capacitor C7, C5 with wave detector
The input terminal Vo of N2 is electrically connected, and wherein circuit is grounded after also passing through resistance R3 between capacitor C7 and capacitor C5, for RC filtering with
Impedance matching.
+ 3V power supply is separately connected the EN pin and VCC pin of wave detector N2, and the EN pin of wave detector N2 also passes through capacitor C3
After be grounded, be electrically connected between the output end RF pin of wave detector N2 and the input terminal VP pin of comparator N3 by resistance R1；By
Parallel circuit one end ground connection of capacitor C4 and resistance R2 composition, the other end are connected between resistance R1 and the VP pin of comparator N3
On circuit, for RC filtering and impedance matching.
+ 5V power supply is electrically connected the Vcc pin and S pin of comparator N3, and+5V power supply also passes through capacitor C9 and is grounded ,+5V
Power supply also passes through resistance R5 and is electrically connected with the VN pin of comparator N3, the parallel circuit one end being made of capacitor C8 and resistance R4 with
The VN pin of comparator N3 connects, and other end ground connection, the output end Q pin of comparator N3 draws with the input terminal IN of analog switch N4
Foot is electrically connected by resistance R6, is matched for signal impedance.
The Vss pin of -5V power electric connection analog switch N4, the Vss pin of analog switch N4 also pass through capacitor C12 and are followed by
Ground, S2 pin connection -2.45V power supply, S1 pin connection -3.5V power supply ,+5V power supply connect the Vdd pin of analog switch N4 ,+
5V power supply is grounded after also passing through capacitor C15, the output end D pin of analog switch N4 pass sequentially through after inductance L2, resistance R7 with penetrate
The IN pin of frequency power amplifier A1 is electrically connected, and the D pin of analog switch N4 is grounded after also passing through capacitor C10, filtered for LC,
Impedance matching.
The output end OUT pin of radio-frequency power amplifier A1 is electrically connected RFout by capacitor C13, i.e. output transmitting signal,
The OUT pin of radio-frequency power amplifier A1 also passes through inductance L3 electrical connection+28V power supply, is made of capacitor C11 and capacitor C16
Parallel circuit one end connection+28V power supply, other end ground connection.
The energization pins of analog switch are in series with big capacitance capacitor C12 and C15, the energization pins of radio-frequency power amplifier A1
High frequency noise filtering and the filtering of low frequency noise are carried out using the other filter capacitor design of ground connection, specific noise frequency is according to actual use ring
Border commissioning determines.Here, the radiofrequency signal of Yao Shixian quick response, which happens suddenly, detects, the analog switch of radio-frequency power amplifier power supply
Circuit is also very crucial.If needing to switch high current if the drain voltage of metal-oxide-semiconductor modulated RF power amplifier, and it is high-power
The grid input capacitance of MOS switch is generally in several hundred pF or more, and entire control circuit can inevitably introduce additional delay, base
Originally it cannot achieve the response time within 200ns；If secondly modulation grid, although grid controls electric current very little, due to penetrating
The capacitor that the grid of frequency power amplifier is generally needed to be added μ F at least nF grade carrys out low frequency signals suppression oscillation and sponges power supply power supply
High-frequency resonant brought by circuit, such power supply delay will reach the magnitude of several microseconds or more.Here radio-frequency power is put
The analog switched power supply of big grid pole is improved, and can solve the above problem.Control grid analog switch selected first
Encapsulation is small as far as possible, which can be put into radio-frequency power amplifier in this way and need to place big capacitance electricity originally
The grid of appearance is for electric position.However the C15 and C12 of big capacitance capacitor 1uF are placed in the energization pins Vdd and Vss of analog switch
Its switch time is had no effect on, and in analog switch conducting, big capacitance the capacitor C15 and C12 of Vdd and Vss pin
It can play the role of power oscillation damping and high-frequency resonant.Under this processing mode, when the response of radio-frequency power amplifier
Between depend primarily on switch time of radio-frequency power amplifier ON-OFF control circuit, it is possible to realize entirely transmitting link/
The stand-by power consumption of TDMA system is reduced under conditions of receives link quick response.This method all may be used in transmission channel and reception channel
To use, and then realize the low-power consumption standby of entire TDMA receive-transmit system.
The utility model embodiment also provides a kind of radio-frequency front-end transmitting link, opens including above-mentioned radio-frequency power amplifier
Close control circuit.The utility model embodiment also provides a kind of radio-frequency front-end receives link, amplifies including above-mentioned radio-frequency power
Device ON-OFF control circuit.
Radio-frequency power amplifier ON-OFF control circuit is applied to have great advantages in the TDMA system of Integrated Service Digital Network.It is logical
Reason condition Integrated Service Digital Network wants simultaneous transmission DC voltage and radiofrequency signal, however TTL control level often frequency it is lower can not with it is straight
Stream and radiofrequency signal multiplexing transmission, but switch time for directly turning off power supply it is again too slow therefore traditional using Integrated Service Digital Network
TDMA system booting after, entire radio-frequency front-end can be in quiescent operation state, biggish stand-by power consumption will be brought in this way,
And this disadvantage is then overcome by the technology that radio-frequency power amplifier ON-OFF control circuit carries out burst radio-frequency signal detection,
Radio frequency function is realized by being detected inside the radio-frequency front-end after Integrated Service Digital Network to transmitting radiofrequency signal/reception radiofrequency signal
The switch of rate amplifier, such stand-by power consumption can be reduced to the magnitude of nearly hundred milliwatt.
Above are merely preferred embodiments of the utility model, it is noted that above-mentioned preferred embodiment should not regard
For limitations of the present invention, the protection scope of the utility model should be defined by the scope defined by the claims..For
For those skilled in the art, without departing from the spirit and scope of the utility model, it can also make several
Improvements and modifications, these improvements and modifications also should be regarded as the protection scope of the utility model.
Claims (10)
1. a kind of radio-frequency power amplifier ON-OFF control circuit, which is characterized in that coupler, signal including being sequentially connected electrically are put
Big device, wave detector, comparator and analog switch, wherein the input terminal of the coupler is electrically connected with radiofrequency signal input link,
The output end of first output end of the coupler and the analog switch input terminal with the radio-frequency power amplifier respectively
Electrical connection, the second output terminal of the coupler are electrically connected with the input terminal of the signal amplifier.
2. radio-frequency power amplifier ON-OFF control circuit according to claim 1, which is characterized in that the of the coupler
One output end is electrically connected with the input terminal of the radio-frequency power amplifier by capacitor C14.
3. radio-frequency power amplifier ON-OFF control circuit according to claim 1, which is characterized in that the of the coupler
Two output ends are electrically connected with the input terminal of the signal amplifier by capacitor C6, and the input terminal of the signal amplifier also passes through
It is grounded after inductance L1.
4. radio-frequency power amplifier ON-OFF control circuit according to claim 1, which is characterized in that the signal amplifier
Output end pass sequentially through capacitor C7, capacitor C5 after be electrically connected with the input terminal of the wave detector, the capacitor C7 and the electricity
Hold the connection circuit of C5 by being grounded after resistance R3.
5. radio-frequency power amplifier ON-OFF control circuit according to claim 1, which is characterized in that the wave detector it is defeated
It is electrically connected between outlet and the input terminal of the comparator by resistance R1；The parallel circuit one being made of capacitor C4 and resistance R2
End ground connection, the other end are connected on the connection circuit of the input terminal of the resistance R1 and the comparator.
6. radio-frequency power amplifier ON-OFF control circuit according to claim 1, which is characterized in that the comparator it is defeated
Outlet is electrically connected with the input terminal of the analog switch by resistance R6.
7. radio-frequency power amplifier ON-OFF control circuit according to claim 1, which is characterized in that the analog switch
Output end is electrically connected after passing sequentially through inductance L2, resistance R7 with the input terminal of the radio-frequency power amplifier；The radio-frequency power
The input terminal of amplifier is grounded after also passing through capacitor C10.
8. radio-frequency power amplifier ON-OFF control circuit according to claim 1, which is characterized in that the analog switch
Energization pins are in series with microfarad range or nanofarad range capacitor.
9. a kind of radio-frequency front-end emits link, including as radio-frequency power amplifier of any of claims 1-8 switchs
Control circuit.
10. a kind of radio-frequency front-end receives link, including as radio-frequency power amplifier of any of claims 1-8 switchs
Control circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821810449.4U CN209046597U (en) | 2018-11-05 | 2018-11-05 | Radio-frequency power amplifier ON-OFF control circuit, radio-frequency front-end transmitting link and receives link |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821810449.4U CN209046597U (en) | 2018-11-05 | 2018-11-05 | Radio-frequency power amplifier ON-OFF control circuit, radio-frequency front-end transmitting link and receives link |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209046597U true CN209046597U (en) | 2019-06-28 |
Family
ID=67040692
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821810449.4U Active CN209046597U (en) | 2018-11-05 | 2018-11-05 | Radio-frequency power amplifier ON-OFF control circuit, radio-frequency front-end transmitting link and receives link |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209046597U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113543285A (en) * | 2020-04-17 | 2021-10-22 | 海能达通信股份有限公司 | Radio frequency circuit, control method of radio frequency circuit and intercom device |
-
2018
- 2018-11-05 CN CN201821810449.4U patent/CN209046597U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113543285A (en) * | 2020-04-17 | 2021-10-22 | 海能达通信股份有限公司 | Radio frequency circuit, control method of radio frequency circuit and intercom device |
| CN113543285B (en) * | 2020-04-17 | 2023-11-24 | 海能达通信股份有限公司 | Radio frequency circuit, control method of radio frequency circuit and intercom equipment |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109217830A (en) | Radio-frequency power amplifier ON-OFF control circuit, radio-frequency front-end transmitting link and receives link | |
| CN211209671U (en) | Millimeter wave ultra-wideband high-gain low-power-consumption low-noise amplifier chip circuit | |
| CN108063627A (en) | Radio-frequency receiving-transmitting switchs | |
| CN104953996B (en) | A kind of high-isolation radio-frequency switch circuit | |
| CN209046597U (en) | Radio-frequency power amplifier ON-OFF control circuit, radio-frequency front-end transmitting link and receives link | |
| CN102055697B (en) | Energy-saving circuit of cable modem | |
| CN205545159U (en) | W - wave band high performance low -noise amplifier | |
| CN104270102A (en) | Low-distortion amplifier circuit | |
| CN109391236A (en) | A kind of signal amplification circuit and millimeter-wave signal amplifying circuit | |
| CN104868858A (en) | Microwave power amplification device with adjustable attenuation amplitude | |
| CN206060732U (en) | A kind of wide dynamic range AFE (analog front end) | |
| CN208782780U (en) | Power amplification circuit | |
| CN218570209U (en) | Microwave amplifier tube grid voltage control pulse modulation device | |
| CN207339798U (en) | The low-noise amplifier of C-band | |
| CN205510055U (en) | White light audio frequency communication device | |
| CN206850734U (en) | A kind of match circuit sampling apparatus | |
| CN204578479U (en) | The microwave power amplifying device of adjustable attenuation amplitude | |
| CN104868860A (en) | Microwave power amplifier capable of inhibiting harmonic waves | |
| CN202334512U (en) | Airborne ultra-short wave broadcasting station | |
| CN106911358A (en) | A kind of wireless transceiver system | |
| CN204156822U (en) | The amplifier circuit in low noise that the distortion factor is low | |
| CN205356314U (en) | Ultrashort wave radio station received signal treatment circuit | |
| CN107786177A (en) | A kind of low-noise amplifier of C-band | |
| CN204168248U (en) | A kind of amplifier carrying detection | |
| CN204129227U (en) | A kind of antenna automatic switch-over circuit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |