CN206743247U - A kind of tdd communication systems low-noise amplifier - Google Patents
A kind of tdd communication systems low-noise amplifier Download PDFInfo
- Publication number
- CN206743247U CN206743247U CN201720496377.XU CN201720496377U CN206743247U CN 206743247 U CN206743247 U CN 206743247U CN 201720496377 U CN201720496377 U CN 201720496377U CN 206743247 U CN206743247 U CN 206743247U
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- China
- Prior art keywords
- base station
- unit
- switching unit
- low noise
- noise amplification
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Abstract
The utility model provides a kind of tdd communication systems low-noise amplifier,Including low noise amplification unit,RF switching unit and driving power unit,Wherein,The ANT ends of the RF switching unit receive the transmission signal or reception signal of base station,The RX ends of the RF switching unit connect the low noise amplification unit,The TX ends of the RF switching unit are connected through carrying ground,In Base Transmitter time slot,The transmission signal of base station is switched to load by the RF switching unit,And VSWR standing waves test side,Time slot is received in base station,The reception signal of base station is switched to the low noise amplification unit by the RF switching unit,Direct current is converted into driving voltage by the driving power unit,Realize Highgrade integration,The base station design of miniaturization,To meet the design of following 5G multichannels TDD standard radio stations AFE(analog front end)s,And compatible 3G,4G TDD base station designs requirement.
Description
Technical field
It the utility model is related to radio communication base station AFE(analog front end) technical field, and in particular to a kind of time division duplex communication system
System low-noise amplifier.
Background technology
It is highly integrated, inexpensive, efficient to be designed to trend, radio communication base with the development of semiconductor technology
Stand from 2G, 3G, 4G, to 5G communication eras, antenna for base station number expands to the extensive smart antenna in 256 tunnels from No. 2 antennas, and this is to small
Type AFE(analog front end) design has just put forward challenge, the utility model be based on time division duplex (Time Division Duplex,
TDD) the characteristics of communication system simulation front end, a kind of high integration tdd communication system low-noise amplifier is devised.
Utility model content
The application realizes Highgrade integration, small-sized by providing a kind of tdd communication systems low-noise amplifier
The base station design of change, to meet the design of following 5G multichannels TDD standard radio stations AFE(analog front end)s, and compatible 3G, 4G TDD
Base station design requirement.
The application is achieved using following technical scheme：
A kind of tdd communication systems low-noise amplifier, including low noise amplification unit, RF switching unit and
Driving power unit, wherein, the ANT ends of the RF switching unit receive the transmission signal or reception signal of base station, described
The RX ends of RF switching unit connect the RFin ends of the low noise amplification unit, the RFout ends of the low noise amplification unit
Base station receives link is connected, the TX ends of the RF switching unit are connected through carrying ground, in Base Transmitter time slot, the radio frequency
The transmission signal of base station is switched to load, and VSWR standing waves test side by switch element, and time slot, the radio frequency are received in base station
The reception signal of base station is switched to the low noise amplification unit by switch element, the driving power unit respectively with it is described low
Noise amplification unit and the RF switching unit are electrically connected with, and 5V direct current is converted into 28V driving voltages.
The low noise amplification unit (LNA) is used to be amplified small-signal, while suppresses noise.
The RF switching unit is used for switching signal path, realizes cutting for Base Transmitter link and base station receives link
Change, in Base Transmitter time slot, the transmission signal of base station is switched into 50 ohm loads in antenna opening reflected signal, and VSWR is stayed
Ripple test side, provide base station port standing wave detection signal；Time slot is received in base station, the reception signal of base station is switched to described low
Noise amplifier, hence into base station receives link.
The driving power module, which is used to boost, is powered, and 5V DC voltages are converted into 28V driving voltages, are the radio frequency
Switch element and low noise amplification unit provide drive circuit and power supply, so as to realize tdd communication system low-noise amplifier only
Need single 5V power supplies.
Further, the driving power unit includes NMOS tube T, the first diode D1, the second diode D2, electric capacity C
And inductance L, wherein, the grid connection controller of the NMOS tube T, the source ground of the NMOS tube T, the NMOS tube T
Drain electrode on the one hand by the positive poles of the inductance L connections 5V power supplys, on the other hand connect the positive pole of the second diode D2,
The negative pole of the second diode D2 is grounded by the electric capacity C, and the drain electrode of the NMOS tube T is also connected with first diode
D1 negative pole, the plus earth of the first diode D1.
Compared with prior art, the technical scheme that the application provides, the technique effect or advantage having are：High integration,
Miniaturization；After integration packaging, path is shorter between level, improves performance；The utility model realize Highgrade integration, miniaturization
Base station design, to meet the design of following 5G multichannels TDD standard radio stations AFE(analog front end)s, and compatible 3G, 4G TDD base stations
Design requirement.
Brief description of the drawings
Fig. 1 is tdd communication systems structured flowchart；
Fig. 2 is driving power unit internal circuit diagram；
Fig. 3 is low noise amplification unit internal circuit diagram；
Fig. 4 is TDD system architecture of base station schematic diagram.
Embodiment
The embodiment of the present application is realized highly integrated by providing a kind of tdd communication systems low-noise amplifier
Change, the base station design of miniaturization, to meet the design of following 5G multichannels TDD standard radio stations AFE(analog front end)s, and compatible 3G,
4G TDD base station designs requirement.
It is right below in conjunction with Figure of description and specific embodiment in order to be better understood from above-mentioned technical proposal
Above-mentioned technical proposal is described in detail.
Embodiment
A kind of tdd communication systems low-noise amplifier, as Figure 1 and Figure 4, including low noise amplification unit, penetrate
Frequency switch element and driving power unit, wherein, the ANT ends of the RF switching unit receive base station transmission signal or
Reception signal, the RX ends of the RF switching unit connect the RFin ends of the low noise amplification unit, the low noise amplification
The RFout ends connection base station receives link of unit, the TX ends of the RF switching unit are connected through carrying ground, in Base Transmitter
The transmission signal of base station is switched to load, and VSWR standing waves test side by time slot, the RF switching unit, is received in base station
The reception signal of base station is switched to the low noise amplification unit, the driving power list by time slot, the RF switching unit
Member is electrically connected with the low noise amplification unit and the RF switching unit respectively, and 5V direct current is converted into 28V drives
Dynamic voltage.
The low noise amplification unit is used to be amplified small-signal, while suppresses noise.
The RF switching unit is used for switching signal path, realizes cutting for Base Transmitter link and base station receives link
Change, in Base Transmitter time slot, the transmission signal of base station is switched into 50 ohm loads in antenna opening reflected signal, and VSWR is stayed
Ripple test side, there is provided base station port standing wave detection signal；Time slot is received in base station, the reception signal of base station is switched to described low
Noise amplifier, hence into base station receives link.
The driving power module, which is used to boost, is powered, and 5V DC voltages are converted into 28V driving voltages, are the radio frequency
Switch element and low noise amplification unit provide drive circuit and power supply, so as to realize tdd communication system low-noise amplifier only
Need single 5V power supplies.
As shown in Fig. 2 the driving power unit includes NMOS tube T, the first diode D1, the second diode D2, electric capacity C
And inductance L, wherein, the grid connection controller of the NMOS tube T, the source ground of the NMOS tube T, the NMOS tube T
Drain electrode on the one hand by the positive poles of the inductance L connections 5V power supplys, on the other hand connect the positive pole of the second diode D2,
The negative pole of the second diode D2 is grounded by the electric capacity C, and the drain electrode of the NMOS tube T is also connected with first diode
D1 negative pole, the plus earth of the first diode D1.
Fig. 3 is low noise amplification unit internal circuit diagram.
Fig. 4 is TDD system architecture of base station schematic diagram.In Fig. 4,105 be Base Transmitter link power amplifier, for amplifying
Output signal, 106 be circulator, and for providing the isolation between transmitting TX, reception RX and antenna opening ANT, 107 be base station output
Port filter is used to filter out out-of-band interference and noise, and in Base Transmitter time slot, the transmission signal of base station is believed in antenna oral reflex
Number switch to 50 ohm loads, and VSWR standing waves test side, there is provided base station port standing wave detection signal；When being received in base station
Gap, reception signal is switched into low-noise amplifier, hence into base station receives link.
In above-described embodiment of the application, by providing a kind of tdd communication systems low-noise amplifier, including it is low
Noise amplification unit, RF switching unit and driving power unit, wherein, the ANT ends of the RF switching unit receive base
The transmission signal or reception signal stood, the RX ends of the RF switching unit connect the low noise amplification unit, described to penetrate
The TX ends connection of frequency switch element is through carrying ground, and in Base Transmitter time slot, the RF switching unit believes the transmitting of base station
Number load, and VSWR standing waves test side are switched to, time slot is received in base station, the RF switching unit believes the reception of base station
Number the low noise amplification unit is switched to, direct current is converted into driving voltage by the driving power unit, realizes height
Integrated, miniaturization base station design, to meet the design of following 5G multichannels TDD standard radio stations AFE(analog front end)s, and it is simultaneous
Hold 3G, 4G TDD base station designs requirement.
It should be pointed out that it is that limitation of the present utility model, the utility model are also not limited to that described above, which is not,
The example above, what those skilled in the art were made in essential scope of the present utility model changes, is modified, adding
Add or replace, should also belong to the scope of protection of the utility model.
Claims (2)
1. a kind of tdd communication systems low-noise amplifier, it is characterised in that including low noise amplification unit, RF switch
Unit and driving power unit, wherein, the ANT ends of the RF switching unit receive the transmission signal of base station or receive letter
Number, the RX ends of the RF switching unit connect the RFin ends of the low noise amplification unit, the low noise amplification unit
RFout ends connect base station receives link, and the TX ends connection of the RF switching unit is through carrying ground, in Base Transmitter time slot,
The transmission signal of base station is switched to load, and VSWR standing waves test side by the RF switching unit, and time slot is received in base station,
The reception signal of base station is switched to the low noise amplification unit, the driving power unit difference by the RF switching unit
It is electrically connected with the low noise amplification unit and the RF switching unit, 5V direct current is converted into 28V driving voltages.
2. tdd communication systems low-noise amplifier according to claim 1, it is characterised in that the driving power
Unit includes NMOS tube T, the first diode D1, the second diode D2, electric capacity C and inductance L, wherein, the grid of the NMOS tube T
Pole connects controller, the source ground of the NMOS tube T, on the one hand the drain electrode of the NMOS tube T passes through the inductance L connections 5V
The positive pole of power supply, on the other hand connects the positive pole of the second diode D2, and the negative pole of the second diode D2 passes through described
Electric capacity C is grounded, and the drain electrode of the NMOS tube T is also connected with the negative pole of the first diode D1, and the first diode D1 is just
Pole is grounded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720496377.XU CN206743247U (en) | 2017-05-07 | 2017-05-07 | A kind of tdd communication systems low-noise amplifier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720496377.XU CN206743247U (en) | 2017-05-07 | 2017-05-07 | A kind of tdd communication systems low-noise amplifier |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206743247U true CN206743247U (en) | 2017-12-12 |
Family
ID=60563892
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720496377.XU Active CN206743247U (en) | 2017-05-07 | 2017-05-07 | A kind of tdd communication systems low-noise amplifier |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206743247U (en) |
-
2017
- 2017-05-07 CN CN201720496377.XU patent/CN206743247U/en active Active
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