CN106571850A - Bidirectional amplifier of TDD mode - Google Patents
Bidirectional amplifier of TDD mode Download PDFInfo
- Publication number
- CN106571850A CN106571850A CN201610983518.0A CN201610983518A CN106571850A CN 106571850 A CN106571850 A CN 106571850A CN 201610983518 A CN201610983518 A CN 201610983518A CN 106571850 A CN106571850 A CN 106571850A
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- Prior art keywords
- circuit
- amplifier
- receiving
- circle device
- crossed circle
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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
- H04B1/38—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
- H04B1/44—Transmit/receive switching
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
- H03F3/62—Two-way 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
-
- 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
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Power Engineering (AREA)
- Transceivers (AREA)
- Amplifiers (AREA)
Abstract
The invention discloses a bidirectional amplifier of a TDD mode. The bidirectional amplifier comprises a switch circuit, an emission circuit, a transmit-receive isolation circuit, a receiving circuit and a transmit-receive control circuit. The transmit-receive isolation circuit comprises a double circulator. An output terminal of the emission circuit is connected to an input terminal of the double circulator. An input terminal of the receiving circuit is connected to a receiving terminal of the double circulator. An antenna terminal of the double circulator is connected to an antenna. The antenna terminal receives/sends an antenna signal. The transmit-receive control circuit is connected to the switch circuit, the emission circuit, the receiving circuit and the transmit-receive isolation circuit. The invention provides a receiving and emission high isolation circuit based on the TDD mode; and simultaneously a low noise receiving requirement and a linear large-power output requirement are satisfied, and stable and anti-interference work can be performed.
Description
Technical field
The present invention relates to the amplifier of the communications field, and in particular to a kind of two-way amplifier of band based on TDD mode of operations.
Background technology
The duplex communication mode that various communication systems are adopted have tdd mode and fdd mode point.In tdd mode, base station
The power amplifier for using not only needs output high-power and it is necessary to do not damage the function of low-noise reception circuit.In engineering
Using in, in order to realize zooming out WLAN signal, need to carry out power amplification to uplink and downlink signal respectively.Lead in the market
The dual-port structure of single-input single-output is used, if to apply in the separate signal transmission system of up-downgoing, is needed
Additionally to increase module to be merged into two paths of signals all the way, construction inconvenience, engineering cost are high.
Tdd mode amplifier is used at present, and the switch operating of transmission circuit is typically carried out using integrated single-pole double-throw switch (SPDT),
Also have and adopt passive ferrite toroidal device to make transceiver insulation circuit to meet the switching of mode of operation.The former circuit is simple, but
Due to semiconductor module Power Limitation, the linear power of very little can only be exported, it is impossible to which the output for meeting base station is high-power
Require；The ferrite toroidal device that the latter adopts makes the high-power of output be directly connected to transmitting antenna, and reliability is higher, linear index
Good, power capacity is big, but because the isolation of itself is limited, low-noise amplifier directly connects circulator, can cause low noise
Amplifier damage.
The content of the invention
It is an object of the invention to overcome the above-mentioned deficiency of prior art, there is provided a kind of to be put based on the two-way of tdd mode
Big device.
Specifically, the invention provides following technical scheme：
A kind of two-way amplifier of tdd mode, two-way amplifier include on-off circuit, radiating circuit, transceiver insulation circuit,
Receiving circuit and transmitting-receiving control circuit；The transceiver insulation circuit includes Crossed Circle device, the outfan of the radiating circuit and institute
The input for stating Crossed Circle device is connected, and the input of the receiving circuit is connected with the receiving terminal of the Crossed Circle device, institute
State Crossed Circle device antenna end connection antenna, the antenna end reception/transmission antenna signal, the transmitting-receiving control circuit with it is described
On-off circuit, radiating circuit, receiving circuit and the transceiver insulation circuit are connected.
Preferably, radiating circuit includes gain amplifying circuit, isolator and the power amplifier being sequentially connected in series, the power
The outfan of amplifier connects the input of the Crossed Circle device, the transmitting-receiving control circuit connect the gain amplifying circuit and
Power amplifier.
Preferably, the first low noise amplifier, band filter and the second LNA that receiving circuit includes being sequentially connected in series are opened
Big device is simultaneously sequentially connected, and the receiving terminal of the Crossed Circle device connects the input of first low noise amplifier, the transmitting-receiving control
Circuit processed connects the first low noise amplifier and the second low noise amplifier.
Preferably, transceiver insulation circuit also includes radio-frequency (RF) switch SW2 and PIN (positive-intrinsicnegative)
Diode, the input of the receiving circuit is sequentially connected the radio-frequency (RF) switch and PIN diode.
Preferably, the first temperature compensation attenuator is connected between on-off circuit and the gain amplifying circuit input.
Preferably, the first bonder is connected between power amplifier output and the Crossed Circle device input, described
One bonder is also connected with first detector, and the first detector arranges positive detection port.
Preferably, the input of Crossed Circle device is connected with the second bonder, and second bonder connects the second detection
Device, the second detector arranges backward power detection port.
Preferably, the first low noise amplifier input connection amplitude limiter, the on-off circuit amplifies with second low noise
Connect the second temperature compensation attenuator between device outfan.
Preferably, PIN diode is arranged at double with described apart from the receiving terminal quarter-wave strong point of the Crossed Circle device
Circulator is connected.
Preferably, Crossed Circle device is connected by two circulators and is formed, and the Crossed Circle device arranges load end.
Compared with prior art, the two-way amplifier of the tdd mode that the present invention is provided, has the advantages that：
1) two-way amplifier of the tdd mode that the present invention is provided is formed by connecting using Crossed Circle device by two circulators, can
With effective protection radiating circuit final amplifier, the transmitting of stable signal is realized, while having transmitting-receiving separation, reception antenna end
Signal to receiving circuit function.
2) two-way amplifier of the tdd mode that the present invention is provided connects first detector D2 by the first bonder COP1,
First detector D2 connects forward power detection signal, the second bonder COP2 connection second detector D3, turn-on reversal power
The detection of reflected signal is realized in detection signal port, can realize that standing wave is detected by control circuit.
3) the invention provides a kind of reception based on tdd mode and transmitting high isolation circuit, while meeting low noise
The requirement of reception and Linear Great Power output requirement, and can stablize it is jamproof be operated, employ in receiving circuit
Built-in amplitude limiter, its noise is low, the characteristic that high gain, survivability energy is strong significantly improves receiving sensitivity, balances transmitting-receiving
Energy.
4) receiving terminal of the Crossed Circle device of the two-way amplifier of the tdd mode that the present invention is provided connects a PIN diode
D1, when two-way amplifier is in emission state, turns on PIN diode D1, is now Low ESR at PIN diode D1, passes through
Quarter-wave Crossed Circle device receiving terminal is high impedance, and when antenna end open circuit or larger standing wave, reflection power is transferred to
Crossed Circle device load end, radio-frequency (RF) switch SW2 is switched on load, and effective protection receiving circuit is not damaged, while passing through the second coupling
Clutch COP2 connects second detector D3, detects backward power, realizes protection.When two-way amplifier is in reception state, cut
Only PIN pipes, are now high impedance at PIN pipes DI, and Crossed Circle device receiving terminal is 50 ohm, while radio-frequency (RF) switch SW2 is switched on
Receiving circuit, antenna end signal reaches receiving circuit by Crossed Circle device receiving terminal.
Description of the drawings
By reading the detailed description made to non-limiting example made with reference to the following drawings, other of the invention
Feature, objects and advantages will become more apparent upon：
Fig. 1 is the structural representation of the two-way amplifier of the tdd mode of the embodiment of the present invention；
Fig. 2 is the circuit theory schematic diagram of the two-way amplifier of the tdd mode of the embodiment of the present invention.
In the accompanying drawings, identical part uses identical reference.
Specific embodiment
To make purpose, technical scheme and the advantage of the embodiment of the present invention clearer, below in conjunction with the embodiment of the present invention
In accompanying drawing, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is
The a part of embodiment of the present invention, rather than the embodiment of whole.Present invention enforcement generally described and illustrated in accompanying drawing herein
The component of example can be arranged and designed with a variety of configurations.Therefore, reality of the invention below to providing in the accompanying drawings
The detailed description for applying example is not intended to limit the scope of claimed invention, but is merely representative of the selected enforcement of the present invention
Example.Based on the embodiment in the present invention, what those of ordinary skill in the art were obtained under the premise of creative work is not made
Every other embodiment, belongs to the scope of protection of the invention.
In describing the invention, in addition it is also necessary to explanation, unless otherwise clearly defined and limited, term " setting ",
" connection " should be interpreted broadly, for example, it may be being fixedly connected, or being detachably connected, or be integrally connected；Can be
It is mechanically connected, or electrically connects；Can be joined directly together, it is also possible to be indirectly connected to by intermediary, can be two
The connection of element internal.For the ordinary skill in the art, can as the case may be understand above-mentioned term at this
Concrete meaning in invention.
In addition, the technical scheme between each embodiment of the invention can be combined with each other, but must be general with this area
Logical technical staff can be implemented as basis, when the combination appearance of technical scheme is conflicting or cannot realize it will be understood that this
The combination of technical scheme is not present, also not within the protection domain of application claims.
Below in conjunction with the accompanying drawings the present invention is further described with exemplary embodiment, wherein if it is known that technology it is detailed
Thin description is then omitted for illustrating the invention is characterized in that unnecessary.
Fig. 1 is the structural representation of the two-way amplifier of the tdd mode of the embodiment of the present invention, and Fig. 2 is the embodiment of the present invention
Tdd mode two-way amplifier circuit theory schematic diagram.The two-way amplifier of tdd mode provided in an embodiment of the present invention is used
After to radio-frequency input signals in addition processing and amplifying, radio frequency output signal is exported, and receives radiofrequency signal and be amplified process
Signal transmission system.
Two-way amplifier includes on-off circuit 101, radiating circuit 102, transceiver insulation circuit 103, receiving circuit 104 and receives
Send out control circuit 105, transmitting-receiving control circuit 105 and on-off circuit 101, radiating circuit 102, receiving circuit 104 and transmitting-receiving every
It is connected and is controlled from circuit 103.During emission of radio frequency signals, from RFIN ends in turn switch on on-off circuit, radiating circuit and
Transceiver insulation circuit, finally by antenna ANT the transmitting of signal is carried out, and now receiving circuit isolation disconnects；Rf signal reception
When, radiofrequency signal is received by antenna ANT and transceiver insulation circuit, receiving circuit and on-off circuit is in turn switched on, now launch
Circuit is off.
On-off circuit 101 is realized signal and is received and transmission using the integrated single-pole double-throw switch (SPDT) SW1 of linear high power
Between switching buffer action, control signal is sent by transmitting-receiving control circuit 105 and switches over control.
Transceiver insulation circuit 103 includes Crossed Circle device 1031, and the outfan of radiating circuit 102 is defeated with Crossed Circle device 1031
The pin 1 for entering the i.e. Crossed Circle device in end is connected, and the receiving terminal of Crossed Circle device 1031 is connected with the input of receiving circuit 104,
The input of receiving circuit 104 is that pin 3 is connected with the receiving terminal of Crossed Circle device 1031, and the antenna end of Crossed Circle device 1031 is
Pin 2 connects antenna ANT, antenna end reception/transmission antenna signal；
Preferably, transceiver insulation circuit 103 also includes radio-frequency switch circuit and capacitance (not shown), radio-frequency (RF) switch electricity
Road includes radio-frequency (RF) switch SW2 and PIN diode D1, input connection radio-frequency (RF) switch SW2 of receiving circuit 104 and PIN diode
D1 anodes, connect the receiving terminal of Crossed Circle device 1031, PIN diode D1 negative electrodes after PIN diode D1 anodes connection capacitance
Ground connection, the connection load end 106 of Crossed Circle device 1031.Preferably, radio-frequency (RF) switch SW2 is switched so as to improve using filter with low insertion loss high isolation
Receiving circuit isolation and reduction receives link noise.In the present embodiment, PIN diode is arranged at apart from Crossed Circle device 1031
Receiving terminal is that the quarter-wave position of pin 3, i.e. MLIN length are quarter-wave, and wavelength is the ripple of transmitting-receiving subassembly frequency
It is long.
Radio-frequency (RF) switch SW2 adopts single-pole double-throw switch (SPDT), is switched on turning on receiving circuit 104 during end, is switched to disconnected
Receiving circuit 104 disconnects and connects load resistance during the beginning, and load resistance is preferably 50 ohmages.
When two-way amplifier is in emission state, PIN diode D1 is turned on, is now Low ESR at PIN diode D1,
Crossed Circle device receiving terminal is high impedance, and when antenna end open circuit or larger standing wave, reflection power is transferred to Crossed Circle device 1031 and draws
The load end 106 of foot 4, radio-frequency (RF) switch SW2 is switched to open end and connects 50 ohm load ends, and effective protection receiving circuit is not damaged
It is bad, while connecting second detector D3 by the second bonder COP2, backward power is detected, realize protection.
When two-way amplifier is in reception state, radio-frequency (RF) switch SW2 is switched on terminating logical receiving circuit 104, cuts
Only PIN diode D1, is now high impedance at PIN diode D1.Preferably, the load end of Crossed Circle device is 50 ohmages.
Crossed Circle device 1031 is received or transmission antenna signal by antenna end, and transmitting-receiving control circuit 105 sends control letter
Number, Crossed Circle device 1031 is connected and is in series by two circulators, can with effective protection radiating circuit final amplifier circuit,
Stable signal transmitting and reception is realized, with transmitting-receiving separation, low-loss and powerful characteristic.
Refering to Fig. 2, during transmission signal, the emission port conducting of on-off circuit 101, radiofrequency signal passes through on-off circuit 101
Radiating circuit 102 is entered afterwards, and signal passes sequentially through gain amplifying circuit, isolator IS1 and power amplifier PA3, last power
The input of the outfan connection Crossed Circle device 1031 of amplifier PA3 is pin 1, is passed through by the antenna end of Crossed Circle device 1031
Antenna ANT transmission signals, now, the transmitting-receiving control PIN diode D1 forward conductions of control circuit 105, are low at PIN diode D1
Impedance, transmitting-receiving control radio-frequency (RF) switch SW2 of control circuit 105 disconnects.Gain amplifying circuit can be two-stage amplifying circuit, such as Fig. 2
Shown in, including the first amplifier PA1 and the second amplifier PA2.Power amplifier PA3 will be anti-interference through the screening of isolator
Signal afterwards is amplified.The formation two-stage amplifying circuit being cascaded by two amplifying circuits, it is ensured that signal is put
It is powerful while avoiding distortion.The transmitting-receiving connecting valve circuit of control circuit 105, gain amplifying circuit and power amplifier are carried out
Emissioning controling signal is adjusted.
When receiving signal, the receiving terminal conducting of on-off circuit 101, antenna ANT receives radiofrequency signal, by Crossed Circle device
The antenna end of 1031 pins 2 receives radiofrequency signal, then passes sequentially through isolation capacitance, PIN diode D1 and radio-frequency (RF) switch, then passes
Receiving circuit 104 is transported to, receiving circuit 104 includes that the first low noise amplifier LNA1, band filter F1 and the second low noise are amplified
Device LAN2 simultaneously turns on powered-down road 101 after being sequentially connected.Now, receive and dispatch the control PIN diode D1 of control circuit 105 reversely to cut
Only, at PIN diode D1 it is high impedance, transmitting-receiving control radio-frequency (RF) switch SW2 of control circuit 105 is turned on, while controlling the first low noise
The faint signal of telecommunication is amplified process by amplifier LNA1, is then filtered through band filter F1, then by
Two low noise amplifier LNA2 complete the reception work of signal after amplifying again.
In certain embodiments, connection first is warm between the input of the outfan of on-off circuit 103 and the first amplifier PA1
Attenuator is mended, under emission mode, signal carries out signal attenuation by the first temperature compensation attenuator, is then sequentially connected with the second amplifier
PA1, the second amplifier PA2, isolator IS1 and power amplifier PA3, power amplifier PA3 outfans connect the first bonder
It is pin 1 that the input of Crossed Circle device 1031 is accessed after COP1, and the second bonder COP2 is of coupled connections with Crossed Circle device 1031, finally
The antenna end connected by Crossed Circle device 1031 is that pin 2 realizes that signal is launched, and is provided with the pin 4 of Crossed Circle device 1031 negative
End 106 is carried, load end 106 can be 50 ohm of load in the present embodiment, effective protection operating circuit.
First bonder COP1 another port connects first detector D2, and first detector D2 detects port by positive
The detection of positive is realized, the second bonder COP2 connection second detector D3 are now reflected by the cause for gossip of backward power test side
The detection of signal, first detector D2 and second detector D3 are constituted by a diode.
Under the pattern of signal transmitting, transmitting-receiving connection the first amplifier PA1 and the second amplifier PA2 of control circuit 105 enters
The regulation of row amplification.
Reflected signal link is ANT ports-Crossed Circle device 1031- the second bonder COP2-50 ohm loads 106, effectively
The electrical part of protection receiving circuit 104, such as radio-frequency (RF) switch SW2, amplitude limiter XF1 and low noise amplifier device.
Connect amplitude limiter XF1 between the outfan of radio-frequency (RF) switch SW2 and the first low noise amplifier LNA1 inputs, preferably
Ground, amplitude limiter XF1 is composed in parallel by two diode reverses.The outfan of the second low noise amplifier LNA2 connects the second temperature compensation and declines
Subtract device, then connecting valve circuit SW1, complete the reception work of signal.
These are only present pre-ferred embodiments, be not used to limitation the present invention, it is all the spirit and principles in the present invention it
Interior done modification, equivalent and improvement etc., are required to be included within protection scope of the present invention.
Claims (10)
1. a kind of two-way amplifier of tdd mode, it is characterised in that the two-way amplifier include on-off circuit, radiating circuit,
Transceiver insulation circuit, receiving circuit and transmitting-receiving control circuit；The transceiver insulation circuit includes Crossed Circle device, the radiating circuit
Outfan be connected with the input of the Crossed Circle device, the reception of the input of the receiving circuit and the Crossed Circle device
End is connected, the antenna end connection antenna of the Crossed Circle device, the antenna end reception/transmission antenna signal, the transmitting-receiving control
Circuit processed is connected with the on-off circuit, radiating circuit, receiving circuit and the transceiver insulation circuit.
2. the two-way amplifier of tdd mode according to claim 1, it is characterised in that the radiating circuit includes going here and there successively
The gain amplifying circuit of connection, isolator and power amplifier, the outfan of the power amplifier connects the Crossed Circle device
Input, the transmitting-receiving control circuit connects the gain amplifying circuit and power amplifier.
3. the two-way amplifier of tdd mode according to claim 1, it is characterised in that the receiving circuit includes going here and there successively
First low noise amplifier of connection, band filter and the second low noise amplifier are simultaneously sequentially connected, the receiving terminal of the Crossed Circle device
Connect the input of first low noise amplifier, the transmitting-receiving control circuit connects the first low noise amplifier and the second LNA
Big device.
4. the two-way amplifier of tdd mode according to claim 1, it is characterised in that the transceiver insulation circuit also includes
Radio-frequency (RF) switch, PIN diode and capacitance, the receiving terminal of the Crossed Circle device be sequentially connected capacitance, PIN diode and
Connect the input of the receiving circuit after radio-frequency (RF) switch.
5. the two-way amplifier of tdd mode according to claim 2, it is characterised in that the on-off circuit and the gain
Connect the first temperature compensation attenuator between input amplifier.
6. the two-way amplifier of tdd mode according to claim 2, it is characterised in that the power amplifier output with
Connect the first bonder between the Crossed Circle device input, first bonder is also connected with first detector, described first
Cymoscope arranges positive detection port.
7. according to the two-way amplifier of the arbitrary tdd mode in claim 1,2 or 6, it is characterised in that the Crossed Circle device
Input is connected with the second bonder, and second bonder connects second detector, and the second detector arranges reverse
Power sensor port.
8. the two-way amplifier of tdd mode according to claim 3, it is characterised in that first low noise amplifier is defeated
Enter end connection amplitude limiter, the second temperature compensation attenuator is connected between the on-off circuit and the second low noise amplifier outfan.
9. the two-way amplifier of tdd mode according to claim 4, it is characterised in that the PIN diode be arranged at away from
Receiving terminal quarter-wave strong point from the Crossed Circle device is connected with the Crossed Circle device.
10. the two-way amplifier of tdd mode according to claim 3, it is characterised in that the Crossed Circle device is by two rings
Shape device connects to be formed, and the Crossed Circle device arranges load end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610983518.0A CN106571850A (en) | 2016-11-08 | 2016-11-08 | Bidirectional amplifier of TDD mode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610983518.0A CN106571850A (en) | 2016-11-08 | 2016-11-08 | Bidirectional amplifier of TDD mode |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106571850A true CN106571850A (en) | 2017-04-19 |
Family
ID=58540667
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610983518.0A Pending CN106571850A (en) | 2016-11-08 | 2016-11-08 | Bidirectional amplifier of TDD mode |
Country Status (1)
| Country | Link |
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| CN (1) | CN106571850A (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107483072A (en) * | 2017-08-15 | 2017-12-15 | 贵州航天天马机电科技有限公司 | A kind of RF high power transceiver circuit |
| CN108092688A (en) * | 2018-01-02 | 2018-05-29 | 广州吉欧电子科技有限公司 | A kind of high-power data transmission transmitting-receiving radio station |
| CN109120236A (en) * | 2018-11-05 | 2019-01-01 | 上海艾为电子技术股份有限公司 | Gain circuitry |
| CN109245782A (en) * | 2018-10-30 | 2019-01-18 | 天津津航计算技术研究所 | A kind of radio-frequency front-end receives link |
| CN110138394A (en) * | 2019-06-28 | 2019-08-16 | 京信通信***（中国）有限公司 | A kind of signal receiving/transmission device and terminal |
| CN110492951A (en) * | 2019-08-02 | 2019-11-22 | Oppo（重庆）智能科技有限公司 | A kind of RF FEEDBACK detection circuit, antenna module and electronic equipment |
| CN110932751A (en) * | 2019-11-26 | 2020-03-27 | 京信通信***（中国）有限公司 | High-power up-down switching device and communication equipment |
| CN111446931A (en) * | 2020-03-18 | 2020-07-24 | 西安电子科技大学 | Bidirectional power amplifier applied to 320 MHz-420 MHz |
| CN113364482A (en) * | 2021-05-21 | 2021-09-07 | 深圳市时代速信科技有限公司 | Radio frequency transceiving front end |
| CN117294326A (en) * | 2023-11-13 | 2023-12-26 | 北京唯得科技有限公司 | Receiving link protection module and receiving link protection circuit for TDD system |
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| CN101527956A (en) * | 2009-03-31 | 2009-09-09 | 华为技术有限公司 | Signal amplifying device and base station system |
| CN103684305A (en) * | 2012-09-18 | 2014-03-26 | 方大铮 | Wireless network intelligent amplifier |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107483072A (en) * | 2017-08-15 | 2017-12-15 | 贵州航天天马机电科技有限公司 | A kind of RF high power transceiver circuit |
| CN107483072B (en) * | 2017-08-15 | 2020-04-24 | 贵州航天天马机电科技有限公司 | Radio frequency high-power transceiving common circuit |
| CN108092688A (en) * | 2018-01-02 | 2018-05-29 | 广州吉欧电子科技有限公司 | A kind of high-power data transmission transmitting-receiving radio station |
| CN109245782A (en) * | 2018-10-30 | 2019-01-18 | 天津津航计算技术研究所 | A kind of radio-frequency front-end receives link |
| CN109120236A (en) * | 2018-11-05 | 2019-01-01 | 上海艾为电子技术股份有限公司 | Gain circuitry |
| CN110138394A (en) * | 2019-06-28 | 2019-08-16 | 京信通信***（中国）有限公司 | A kind of signal receiving/transmission device and terminal |
| CN110492951B (en) * | 2019-08-02 | 2021-11-09 | Oppo（重庆）智能科技有限公司 | Radio frequency feedback detection circuit, antenna assembly and electronic equipment |
| CN110492951A (en) * | 2019-08-02 | 2019-11-22 | Oppo（重庆）智能科技有限公司 | A kind of RF FEEDBACK detection circuit, antenna module and electronic equipment |
| CN110932751A (en) * | 2019-11-26 | 2020-03-27 | 京信通信***（中国）有限公司 | High-power up-down switching device and communication equipment |
| WO2021103151A1 (en) * | 2019-11-26 | 2021-06-03 | 京信通信***（中国）有限公司 | High-power uplink and downlink switching device, and communication apparatus |
| EP4024716A4 (en) * | 2019-11-26 | 2022-12-28 | Comba Network Systems Company Limited | High-power uplink and downlink switching device, and communication apparatus |
| CN111446931A (en) * | 2020-03-18 | 2020-07-24 | 西安电子科技大学 | Bidirectional power amplifier applied to 320 MHz-420 MHz |
| CN113364482A (en) * | 2021-05-21 | 2021-09-07 | 深圳市时代速信科技有限公司 | Radio frequency transceiving front end |
| CN117294326A (en) * | 2023-11-13 | 2023-12-26 | 北京唯得科技有限公司 | Receiving link protection module and receiving link protection circuit for TDD system |
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