CN216086646U - TDD high-power radio frequency module with anti-failure protection function - Google Patents
TDD high-power radio frequency module with anti-failure protection function Download PDFInfo
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- CN216086646U CN216086646U CN202120085887.4U CN202120085887U CN216086646U CN 216086646 U CN216086646 U CN 216086646U CN 202120085887 U CN202120085887 U CN 202120085887U CN 216086646 U CN216086646 U CN 216086646U
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Abstract
The utility model discloses a TDD high-power radio frequency module with an anti-failure protection function, which comprises a transmitting channel amplifying module for establishing a transmitting channel, a receiving channel amplifying module for establishing a receiving channel, a signal transmission direction separating module for separating signal channels, a large signal absorbing module for absorbing leaked high-power signals, a high-power switch module for switching the signal channels and a reflection receiving module for receiving the high-power signals of the receiving channel, wherein the transmitting channel amplifying module is used for establishing a transmitting channel; the signal transmission direction separation module is respectively connected with the transmitting channel amplification module and the high-power switch module, the high-power switch module is also respectively connected with the large signal absorption module and the reflection receiving module, and the large signal absorption module is also connected with the receiving channel amplification module. The utility model realizes failure protection by the step-by-step protection design of the receiving channel amplifying module, can still ensure the safety and reliability of the equipment under the condition of increasing the working power, and greatly reduces the failure rate of the equipment.
Description
Technical Field
The utility model relates to the technical field of radio frequency modules, in particular to a TDD high-power radio frequency module with an anti-failure protection function.
Background
In modern mobile communication systems, communication technologies based on Time Division Duplex (TDD) are increasingly widely used, such as radio frequency modules of TDD communication systems such as TD-SCDMA, TD-LTE, 5g (TDD); because the same-frequency time division duplex technology is adopted, the transmitting signal and the receiving signal work under the same frequency, so that the high-power signal of a transmitting path and the small-signal circuit of a receiving path cannot be effectively isolated in a filter mode; because the receiving path is in a small signal working mode, the strength of the receiving path is not high, when a high-power signal of the transmitting path interferes with the receiving path, a device of the receiving path is easily damaged to cause system failure, most of the prior art adopts the radio frequency electronic switch to avoid the system failure by switching through receiving and transmitting, but the maximum tolerable power of the existing radio frequency electronic switch is 120W, but the ratio of the peak power to the average power in the existing TDD communication system is generally higher, taking TD-TLE as an example, the ratio is about 13dB (20 times), so the radio frequency electronic switch with the power of 120W can be used in a TD-LTE radio frequency module with the average power of 6W, if the average power of the TDD radio frequency module exceeds 6W, the radio frequency electronic switch is damaged due to overload, and the risk of damaging the device of the receiving path without protection exists, the failure rate of the equipment can be increased, so that the existing TDD radio frequency module can not meet the communication scene requirement of a large coverage area.
Accordingly, the prior art is deficient and needs improvement.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the defects of the prior art and provide a TDD high-power radio frequency module with an anti-failure protection function.
The technical scheme of the utility model is as follows:
a TDD high-power radio frequency module with anti-failure protection function includes: the device comprises a transmitting channel amplifying module, a receiving channel amplifying module, a signal transmission direction separating module, a large signal absorbing module, a large power switch module and a reflection receiving module; the signal transmission direction separation module is respectively electrically connected with the transmitting channel amplification module and the high-power switch module, the high-power switch module is also respectively electrically connected with the large signal absorption module and the reflection receiving module, the large signal absorption module is also electrically connected with the receiving channel amplification module, the transmitting channel amplification module is used for providing carrier energy for information transmission to establish a transmitting channel, the signal transmission direction separation module is used for separating transmitting signals and receiving signals in different directions into two signal channels, the high-power switch is used for switching the signals to the corresponding signal channels according to the transmitting and receiving switching control signals of the TDD high-power radio frequency module, the reflection receiving module is used for receiving the high-power signals reflected to the receiving channel by an antenna port of the TDD mobile communication system, and the receiving channel amplification module is used for establishing the receiving channel, the large signal absorbing module is used for absorbing a large power signal leaked from the transmitting channel to the receiving channel.
Preferably, the transmission channel amplifying module comprises a transmission channel high-power amplifier, and the transmission channel high-power amplifier is electrically connected with the signal transmission direction separating module; when in use, the carrier energy required by information transmission is provided for the TDD mobile communication system through the transmitting channel high-power amplifier.
Preferably, the signal transmission direction separation module comprises a circulator, and the circulator is electrically connected with the transmitting channel high-power amplifier and the high-power switch module respectively; when the circulator is used, the transmitting signal and the receiving signal in different directions are separated into two signal channels through the one-way conduction characteristic of the circulator.
Preferably, the high-power switch module comprises a high-power switch, and the high-power switch is electrically connected with the circulator, the reflection receiving module and the large signal absorption module respectively; when the high-power switch is used, the high-power switch switches signals to corresponding signal channels according to the transmitting and receiving switching control signals of the TDD high-power radio frequency module.
Preferably, the reflection receiving module comprises a load, and the load is electrically connected with the high-power switch; when in use, the load absorbs the high-power signal reflected to the receiving channel by the antenna port of the TDD mobile communication system.
Preferably, the large signal absorption module comprises an amplitude limiter, and the amplitude limiter is electrically connected with the high-power switch and the receiving channel amplification module respectively; when in use, the amplitude limiter absorbs the high-power signal leaked from the transmitting channel to the receiving channel, and plays a role in protecting the receiving channel amplifying module device.
Preferably, the receiving channel amplifying module includes a receiving channel low noise amplifier, and the receiving channel low noise amplifier is electrically connected to the amplitude limiter; in use, a receive channel is established by the receive channel low noise amplifier.
By adopting the scheme, the utility model has the following beneficial effects:
the utility model realizes failure protection by the step-by-step protection design of the receiving channel amplifying module, can still ensure the safety and reliability of the equipment under the condition of increasing the working power, greatly reduces the failure rate of the equipment, can effectively improve the coverage area of the TDD mobile communication system, meets the requirement of a wider communication scene, and has wider application range.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
Fig. 1 is a block diagram of the working principle of the present invention.
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
The utility model is described in detail below with reference to the figures and the specific embodiments.
Referring to fig. 1, the utility model provides a TDD high-power radio frequency module with anti-failure protection function, which includes a transmitting channel amplifying module 1, a receiving channel amplifying module 2, a signal transmission direction separating module 3, a large signal absorbing module 4, a high-power switch module 5 and a reflection receiving module 6; the signal transmission direction separation module 3 is electrically connected with the transmission channel amplification module 1 and the high-power switch module 5, the high-power switch module 5 is also electrically connected with the large signal absorption module 4 and the reflection receiving module 6, the large signal absorption module 4 is also electrically connected with the receiving channel amplification module 2, the transmission channel amplification module 1 is used for providing carrier energy for information transmission to establish a transmission channel, the signal transmission direction separation module 3 is used for separating transmission signals and receiving signals in different directions into two signal channels, specifically, the two signal channels are divided into a transmission channel and a receiving channel, the high-power switch is used for switching signals to the corresponding signal channel according to the transmission and receiving switching control signals of the TDD high-power radio frequency module, and the reflection receiving module 6 is used for receiving high-power signals reflected to the receiving channel by an antenna port of the TDD mobile communication system, the receiving channel amplifying module 2 is used for establishing a receiving channel, and the large signal absorbing module 4 is used for absorbing a large power signal leaked from the transmitting channel to the receiving channel;
the transmission channel amplification module 1 comprises a transmission channel high-power amplifier of Ampleon with the model number of BLC8G27LS-240AV, the maximum power of the transmission channel high-power amplifier is 240W (54 dBm), and the transmission channel high-power amplifier is electrically connected with the signal transmission direction separation module 3; when in use, the high-power amplifier of the transmitting channel provides carrier energy required by information transmission for the TDD mobile communication system, thereby establishing the transmitting channel to realize signal transmission;
the signal transmission direction separation module 3 comprises a circulator with the model number of TH0902M, and the circulator is electrically connected with the transmitting channel high-power amplifier and the high-power switch module 5 respectively; when the circulator is used, the transmitting signals and the receiving signals in different directions are separated into two signal channels through the one-way conduction characteristic of the circulator, so that the transmitting signals and the receiving signals are isolated, and particularly, the circulator can provide 20dB of isolation;
the high-power switch module 5 comprises a high-power switch of MASW-000936 type manufactured by MA/COM company, the maximum power of the high-power switch is 120W, and the high-power switch is electrically connected with the circulator, the reflection receiving module 6 and the large signal absorption module 4 respectively; when the high-power switch is used, the high-power switch can switch signals to corresponding signal channels according to the transmitting and receiving switching control signals of the TDD high-power radio frequency module, and particularly, the high-power switch can provide 40dB of isolation;
the reflection receiving module 6 comprises a 50 Ω load with 100W power, and the 50 Ω load is electrically connected with the high-power switch; when the device is used, the 50 omega load absorbs a high-power signal reflected to a receiving channel by an antenna port of the TDD mobile communication system, so that signal crosstalk is avoided;
the large signal absorption module 4 comprises an amplitude limiter with the model of RLM-23-1WL +, and the amplitude limiter is respectively electrically connected with the large power switch and the receiving channel amplification module 2; when the device is used, the amplitude limiter absorbs a high-power signal leaked from a transmitting channel to a receiving channel, and particularly, the amplitude limiter can limit the power of the signal to be within a safety range smaller than 0dBm, so that a device of the receiving channel amplifying module 2 is protected, and the failure rate of the device is greatly reduced;
the receiving channel amplifying module 2 comprises a receiving channel low noise amplifier with the model number of F108 of the middle power group 55, the maximum undamaged input power of the receiving channel low noise amplifier is 0.1W (20 dBm), and the receiving channel low noise amplifier is electrically connected with the amplitude limiter; when in use, the receiving channel is established through the receiving channel low noise amplifier, so that the TDD mobile communication system can receive information.
The working process and principle of the utility model are as follows: signals of the TDD high-power radio frequency module at an antenna port are separated from a transmitting channel and a receiving channel by a circulator in different directions, and a high-power switch is adopted to switch control signals according to transmitting and receiving of a TDD mobile communication system on the receiving channel, so that the signals are switched to the receiving channel and a 50 omega load; in a transmitting time slot, switching to a 50 omega load to absorb a high-power signal reflected by an antenna; in the receiving time slot, the receiving channel is switched, after the leaked high-power signal is absorbed by the amplitude limiter, the low-noise amplifier of the receiving channel amplifies the low noise and sends the amplified signal to the next-stage module, so that under the step-by-step protection of the circulator, the high-power switch, the 50 omega load and the amplitude limiter, the safety and the reliability of the equipment can be ensured under the condition of increasing the working power, and the failure rate of the equipment is greatly reduced.
Compared with the prior art, the utility model has the following beneficial effects:
the utility model realizes failure protection by the step-by-step protection design of the receiving channel amplifying module, can still ensure the safety and reliability of the equipment under the condition of increasing the working power, greatly reduces the failure rate of the equipment, can effectively improve the coverage area of the TDD mobile communication system, meets the requirement of a wider communication scene, and has wider application range.
The present invention is not limited to the above preferred embodiments, and any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. A TDD high-power radio frequency module with anti-failure protection function, characterized by that includes: the device comprises a transmitting channel amplifying module, a receiving channel amplifying module, a signal transmission direction separating module, a large signal absorbing module, a large power switch module and a reflection receiving module; the signal transmission direction separation module is respectively electrically connected with the transmitting channel amplification module and the high-power switch module, the high-power switch module is also respectively electrically connected with the large signal absorption module and the reflection receiving module, the large signal absorption module is also electrically connected with the receiving channel amplification module, the transmitting channel amplification module is used for providing carrier energy for information transmission to establish a transmitting channel, the signal transmission direction separation module is used for separating transmitting signals and receiving signals in different directions into two signal channels, the high-power switch is used for switching the signals to the corresponding signal channels according to the transmitting and receiving switching control signals of the TDD high-power radio frequency module, the reflection receiving module is used for receiving the high-power signals reflected to the receiving channel by an antenna port of the TDD mobile communication system, and the receiving channel amplification module is used for establishing the receiving channel, the large signal absorbing module is used for absorbing a large power signal leaked from the transmitting channel to the receiving channel.
2. The TDD high-power RF module with the failure protection function of claim 1, wherein the transmission channel amplifying module comprises a transmission channel high-power amplifier, and the transmission channel high-power amplifier is electrically connected to the signal transmission direction separating module; when in use, the carrier energy required by information transmission is provided for the TDD mobile communication system through the transmitting channel high-power amplifier.
3. The TDD high-power RF module with the failure protection function according to claim 2, wherein the signal transmission direction separating module comprises a circulator, and the circulator is electrically connected to the transmitting channel high-power amplifier and the high-power switch module respectively; when the circulator is used, the transmitting signal and the receiving signal in different directions are separated into two signal channels through the one-way conduction characteristic of the circulator.
4. The TDD high-power RF module with the failure protection function according to claim 3, wherein the high-power switch module comprises a high-power switch, and the high-power switch is electrically connected to the circulator, the reflection receiving module and the large signal absorption module respectively; when the high-power switch is used, the high-power switch switches signals to corresponding signal channels according to the transmitting and receiving switching control signals of the TDD high-power radio frequency module.
5. The TDD high-power RF module with the fail-safe function according to claim 4, wherein the reflective receiving module comprises a load, and the load is electrically connected to the high-power switch; when in use, the load absorbs the high-power signal reflected to the receiving channel by the antenna port of the TDD mobile communication system.
6. The TDD high-power RF module with the failure protection function according to claim 5, wherein the large signal absorption module comprises a limiter, and the limiter is electrically connected to the high-power switch and the receiving channel amplification module respectively; when in use, the amplitude limiter absorbs the high-power signal leaked from the transmitting channel to the receiving channel, and plays a role in protecting the receiving channel amplifying module device.
7. The TDD high-power RF module with the fail-safe function according to claim 6, wherein the receiving channel amplifying module comprises a receiving channel low noise amplifier, and the receiving channel low noise amplifier is electrically connected to the limiter; in use, a receive channel is established by the receive channel low noise amplifier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120085887.4U CN216086646U (en) | 2021-01-13 | 2021-01-13 | TDD high-power radio frequency module with anti-failure protection function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120085887.4U CN216086646U (en) | 2021-01-13 | 2021-01-13 | TDD high-power radio frequency module with anti-failure protection function |
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| Publication Number | Publication Date |
|---|---|
| CN216086646U true CN216086646U (en) | 2022-03-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120085887.4U Active CN216086646U (en) | 2021-01-13 | 2021-01-13 | TDD high-power radio frequency module with anti-failure protection function |
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| CN (1) | CN216086646U (en) |
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2021
- 2021-01-13 CN CN202120085887.4U patent/CN216086646U/en active Active
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