CN116743281A - Fixed output power detection circuit structure for realizing self-adaptive link selection - Google Patents
Fixed output power detection circuit structure for realizing self-adaptive link selection Download PDFInfo
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- CN116743281A CN116743281A CN202310609418.1A CN202310609418A CN116743281A CN 116743281 A CN116743281 A CN 116743281A CN 202310609418 A CN202310609418 A CN 202310609418A CN 116743281 A CN116743281 A CN 116743281A
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- 238000001514 detection method Methods 0.000 title claims abstract description 75
- 238000012545 processing Methods 0.000 claims abstract description 28
- 230000008878 coupling Effects 0.000 claims description 11
- 238000010168 coupling process Methods 0.000 claims description 11
- 238000005859 coupling reaction Methods 0.000 claims description 11
- 230000003044 adaptive effect Effects 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 5
- 230000008569 process Effects 0.000 claims description 4
- 238000013461 design Methods 0.000 abstract description 3
- 238000005070 sampling Methods 0.000 description 4
- 238000004891 communication Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000010295 mobile communication Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/20—Monitoring; Testing of receivers
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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
- H04B1/06—Receivers
- H04B1/10—Means associated with receiver for limiting or suppressing noise or interference
- H04B1/12—Neutralising, balancing, or compensation arrangements
- H04B1/123—Neutralising, balancing, or compensation arrangements using adaptive balancing or compensation means
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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Abstract
The invention relates to a fixed output power detection circuit structure for realizing self-adaptive link selection, which comprises a pre-amplifier, a coupler, a main receiving link, a detection link and a baseband processing unit, wherein the pre-amplifier receives channel input signals, the output end of the pre-amplifier is connected with the coupler, the output end of the coupler is respectively connected with the main receiving link and the detection link, and the output end of the main receiving link and the output end of the detection link are both connected with the baseband processing unit. The fixed output power detection circuit structure for realizing the self-adaptive link selection can avoid errors and cost rise caused by independent detection links and can enable the design of the rapid detection links to achieve great flexibility. The channel receiving link designed by the invention has the advantages of high detection speed, high precision and the like.
Description
Technical Field
The invention relates to the field of channel power detection, in particular to the technical field of wireless communication radio frequency receivers, and specifically relates to a fixed output power detection circuit structure for realizing self-adaptive link selection.
Background
In mobile communication, the signal transmitted by the channel has power time-varying property, so that the signal received by the receiving end is also a variable which varies along with the input of the wireless channel, and the proper radio frequency link is effectively selected according to the variation of the input power of the signal, so that the power of the output signal becomes a fixed value, which is convenient for the receiver to process and save the resources of a processor, and becomes one of key technologies of the mobile communication receiving technology.
The conventional channel power detection needs to traverse all dynamic ranges of the input power once, which not only requires a lot of time to traverse, but also needs to configure a proper radio frequency device to realize the output of a fixed power value, and the method cannot track the change of the input power of the channel in real time unless the current communication is stopped to traverse the link again. To solve this problem, a dedicated channel power detection channel may be introduced to implement real-time channel link power detection, but this scheme is rarely applied in the commercial field, because it causes a sharp increase in hardware cost.
With the use of the high-speed radio frequency sampling analog-to-digital converter, the signals of the whole frequency range can be all digitized at one time by utilizing the broadband sampling characteristic of the radio frequency sampling analog-to-digital converter, the information of the dynamic range of all output power is calculated at one time by signal processing in the digital domain, and the corresponding radio frequency is configured for a link module to use. However, the circuit is easy to be interfered, so that the accuracy is not high, and the applicability is not wide in some application occasions sensitive to the precision requirement.
As can be seen from the above power detection, the conventional scheme for realizing the output of fixed power by channel power detection is only used in the occasion where high accuracy is required due to the high hardware cost; for the scheme using the high-speed radio frequency sampling analog-to-digital converter, the digital signal is easy to be interfered in the transmission process, so that the error rate is increased, and the requirements are difficult to meet in high-precision application occasions.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a fixed output power detection circuit structure which has the advantages of good stability, high detection accuracy and self-adaptive selection and can realize self-adaptive link selection.
In order to achieve the above object, the structure of the fixed output power detection circuit for realizing adaptive link selection according to the present invention is as follows:
the fixed output power detection circuit structure for realizing the self-adaptive link selection is mainly characterized by comprising a pre-amplifier, a coupler, a main receiving link, a detection link and a baseband processing unit, wherein the pre-amplifier receives channel input signals, the output end of the pre-amplifier is connected with the coupler, the output end of the coupler is respectively connected with the main receiving link and the detection link, and the output end of the main receiving link and the output end of the detection link are both connected with the baseband processing unit;
the pre-amplifier is used for switching signals into two paths, the coupler is used for coupling partial signals from the main receiving link and providing the partial signals for the detection link to process, the main receiving link is used for carrying out gain adjustment on the received signals so that the output power is a fixed value, the detection link is used for receiving the signals provided by the coupler and converting radio frequency signals into voltage signals, the baseband processing unit is used for converting the voltage signals output by the detection link into high and low levels, and the pre-amplifier and the main receiving link module are controlled through the high and low levels so as to carry out link selection and quick link establishment according to the output power of a channel.
Preferably, the circuit structure further comprises a power divider, wherein the input end of the power divider is connected with the output end of the preamplifier, the output end of the power divider is respectively connected with the main receiving link and the detection link, and the power divider is used for coupling part of signals from the main receiving link and providing the signals for the detection link for processing.
Preferably, the pre-amplifier comprises two stages of amplifiers with bypass switches, the two stages of amplifiers are used for amplifying small signals and bypassing large signals, gain adjustment is carried out on received signals, and the bypass switches are used for switching the signals into two paths, wherein one path of signals are amplified, and the other path of signals are directly connected.
Preferably, the main receiving link comprises a numerical control attenuator and a post-amplifier, wherein the input end of the numerical control attenuator is connected with the output end of the coupler, the output end of the numerical control attenuator is connected with the post-amplifier, and the output end of the post-amplifier is connected with the baseband processing unit; the digital controlled attenuator is used for adjusting gain so that the final output power is a fixed value, and the post-amplifier is used for performing gain adjustment on the received signal.
Preferably, the post-amplifier comprises a stage of an amplifier having a bypass switch.
Preferably, the detection link includes a detector, an input end of the detector is connected with an output end of the coupler, an output end of the detector is connected with the baseband processing unit, and the detection link is used for receiving a signal provided by the coupler, converting a radio frequency signal into a voltage signal, and sending the voltage signal to the baseband processing unit.
Preferably, the coupling coefficient of the coupler is a positive value.
The invention adopts the fixed output power detection circuit structure for realizing the self-adaptive link selection, and utilizes the coupler to couple a part of signals processed by the pre-amplifier to form a relatively independent channel detection link for quick link scanning and obtaining corresponding radio frequency configuration, thereby not only avoiding errors and cost rise caused by the independent detection link, but also enabling the design of the quick detection link to obtain great flexibility. The channel receiving link designed by the invention has the advantages of high detection speed, high precision and the like.
Drawings
Fig. 1 is a schematic diagram of a fixed output power detection circuit architecture for implementing adaptive link selection in accordance with the present invention.
Detailed Description
In order to more clearly describe the technical contents of the present invention, a further description will be made below in connection with specific embodiments.
The invention discloses a fixed output power detection circuit structure for realizing self-adaptive link selection, which comprises a pre-amplifier, a coupler, a main receiving link, a detection link and a baseband processing unit, wherein the pre-amplifier receives a channel input signal;
the pre-amplifier is used for switching signals into two paths, the coupler is used for coupling partial signals from the main receiving link and providing the partial signals for the detection link to process, the main receiving link is used for carrying out gain adjustment on the received signals so that the output power is a fixed value, the detection link is used for receiving the signals provided by the coupler and converting radio frequency signals into voltage signals, the baseband processing unit is used for converting the voltage signals output by the detection link into high and low levels, and the pre-amplifier and the main receiving link module are controlled through the high and low levels so as to carry out link selection and quick link establishment according to the output power of a channel.
As a preferred embodiment of the present invention, the circuit structure further includes a power divider, an input end of the power divider is connected to an output end of the preamplifier, an output end of the power divider is connected to the main receiving link and the detecting link, and the power divider is used for coupling part of signals from the main receiving link and providing the signals to the detecting link for processing.
As a preferred embodiment of the present invention, the preamplifier includes two stages of amplifiers having bypass switches for amplifying a small signal and bypassing a large signal, and performing gain adjustment on a received signal, and the bypass switches are used for switching the signal into two paths, one of which is amplified and the other of which is directly connected.
As a preferred embodiment of the present invention, the main receiving link includes a digital control attenuator and a post-amplifier, the input end of the digital control attenuator is connected with the output end of the coupler, the output end of the digital control attenuator is connected with the post-amplifier, and the output end of the post-amplifier is connected with the baseband processing unit; the digital controlled attenuator is used for adjusting gain so that the final output power is a fixed value, and the post-amplifier is used for performing gain adjustment on the received signal.
As a preferred embodiment of the invention, the post-amplifier comprises a stage of an amplifier with a bypass switch.
As a preferred embodiment of the present invention, the detection link includes a detector, an input end of the detector is connected to an output end of the coupler, an output end of the detector is connected to the baseband processing unit, and the detection link is configured to receive a signal provided by the coupler, convert a radio frequency signal into a voltage signal, and send the voltage signal to the baseband processing unit.
As a preferred embodiment of the present invention, the coupling coefficient of the coupler is a positive value.
The invention needs to solve the problems of processor resource shortage and high channel power detection cost, and the problems of more stable circuit and more accurate channel power detection, and solve the problem of self-adaptive selection of a power detection link. The detection path of the invention only uses one broadband detector, the frequency range is 0.1-6 GHz, and the frequency band is very wide. The main component in a general detector is only one diode, so the cost is low. Compared with complex circuits such as frequency mixing and DDS, the circuit has the advantages of simple circuit, wide frequency band range, low cost, high reliability and the like.
In a specific embodiment of the present invention, a fixed output power detection circuit structure for adaptive link selection is disclosed, and as shown in fig. 1, the circuit structure includes a preamplifier, a main receiving link, a coupler, a detection link and a baseband processing unit. The frequency range of the channel input signal in the circuit structure can be from DC to 6GHz, the input power detection range can be from-40 to +30dBm, and the fixed power output through the circuit structure is-10 dBm.
The preamplifier comprises two stages of amplifiers which can be bypassed by using a switch, and the amplifier has the functions of amplifying small signals, bypassing large signals and performing gain adjustment on received signals, wherein the switch can switch the signals into two paths, and one path of amplified signals is directly connected with one path of amplified signals.
The coupler is operative to couple a portion of the signal out of the primary receive chain for processing by the detection chain. The coupling coefficient of the coupler is positive, so that the power of the detection link input signal can be reduced to prevent saturation.
The coupler may be replaced with a splitter to perform the same function, coupling a portion of the signal from the main receive chain for processing by the detect chain.
The main receiving link comprises a numerical control attenuator and a post-amplifier, wherein the attenuation value of the numerical control attenuator has large dynamic state, the gain is adjusted to enable the final output power to be a fixed value, and the post-amplifier comprises an amplifier which can be bypassed by a first stage through a switch, and the gain of the received signal is adjusted.
The detection link comprises a detector, and the detection link can be used for receiving the signals provided by the coupler, converting radio frequency signals into voltage signals and transmitting the voltage signals to the baseband processing unit, or can be realized by performing analog-to-digital conversion by using an ADC (analog-to-digital converter). Because of the relative independence of the detection link and the main receiving link, the circuit can be flexibly realized according to the requirement.
The baseband processing unit converts the voltage signal output by the detection link into high and low levels, and controls the pre-amplifier and the main receiving link module by using the high and low levels, so that the link selection and the quick link establishment are performed according to the output power of the channel.
The specific implementation manner of this embodiment may be referred to the related description in the foregoing embodiment, which is not repeated herein.
It is to be understood that the same or similar parts in the above embodiments may be referred to each other, and that in some embodiments, the same or similar parts in other embodiments may be referred to.
It should be noted that in the description of the present invention, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Furthermore, in the description of the present invention, unless otherwise indicated, the meaning of "plurality" means at least two.
In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The invention adopts the fixed output power detection circuit structure for realizing the self-adaptive link selection, and utilizes the coupler to couple a part of signals processed by the pre-amplifier to form a relatively independent channel detection link for quick link scanning and obtaining corresponding radio frequency configuration, thereby not only avoiding errors and cost rise caused by the independent detection link, but also enabling the design of the quick detection link to obtain great flexibility. The channel receiving link designed by the invention has the advantages of high detection speed, high precision and the like.
In this specification, the invention has been described with reference to specific embodiments thereof. It will be apparent, however, that various modifications and changes may be made without departing from the spirit and scope of the invention. The specification and drawings are, accordingly, to be regarded in an illustrative rather than a restrictive sense.
Claims (7)
1. The circuit structure is characterized by comprising a pre-amplifier, a coupler, a main receiving link, a detection link and a baseband processing unit, wherein the pre-amplifier receives channel input signals, the output end of the pre-amplifier is connected with the coupler, the output end of the coupler is respectively connected with the main receiving link and the detection link, and the output end of the main receiving link and the output end of the detection link are both connected with the baseband processing unit;
the pre-amplifier is used for switching signals into two paths, the coupler is used for coupling partial signals from the main receiving link and providing the partial signals for the detection link to process, the main receiving link is used for carrying out gain adjustment on the received signals so that the output power is a fixed value, the detection link is used for receiving the signals provided by the coupler and converting radio frequency signals into voltage signals, the baseband processing unit is used for converting the voltage signals output by the detection link into high and low levels, and the pre-amplifier and the main receiving link module are controlled through the high and low levels so as to carry out link selection and quick link establishment according to the output power of a channel.
2. The circuit structure for detecting fixed output power for realizing adaptive link selection according to claim 1, further comprising a power divider, wherein an input end of the power divider is connected to an output end of the preamplifier, an output end of the power divider is connected to the main receiving link and the detecting link, respectively, and the power divider is used for coupling part of signals from the main receiving link and providing the signals to the detecting link for processing.
3. The fixed output power detection circuit architecture for implementing adaptive link selection of claim 1, wherein said pre-amplifier comprises two stages of amplifiers having bypass switches for amplifying small signals and bypassing large signals and gain adjusting received signals, said bypass switches being used to switch signals into two paths, one of which is amplifying and the other of which is through.
4. The fixed output power detection circuit structure for realizing adaptive link selection according to claim 1, wherein the main receiving link comprises a digital control attenuator and a post amplifier, the input end of the digital control attenuator is connected with the output end of the coupler, the output end of the digital control attenuator is connected with the post amplifier, and the output end of the post amplifier is connected with the baseband processing unit; the digital controlled attenuator is used for adjusting gain so that the final output power is a fixed value, and the post-amplifier is used for performing gain adjustment on the received signal.
5. The fixed output power detection circuit architecture for implementing adaptive link selection as recited in claim 4, wherein said post-amplifier comprises a stage of an amplifier having a bypass switch.
6. The fixed output power detection circuit structure for implementing adaptive link selection as claimed in claim 1, wherein said detection link comprises a detector, an input of said detector is connected to an output of a coupler, an output of said detector is connected to a baseband processing unit, and said detection link is configured to receive a signal provided by the coupler, convert a radio frequency signal into a voltage signal, and send the voltage signal to said baseband processing unit.
7. The fixed output power detection circuit configuration for implementing adaptive link selection of claim 1, wherein the coupling coefficient of the coupler is positive.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310609418.1A CN116743281A (en) | 2023-05-26 | 2023-05-26 | Fixed output power detection circuit structure for realizing self-adaptive link selection |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202310609418.1A CN116743281A (en) | 2023-05-26 | 2023-05-26 | Fixed output power detection circuit structure for realizing self-adaptive link selection |
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| CN116743281A true CN116743281A (en) | 2023-09-12 |
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| CN202310609418.1A Pending CN116743281A (en) | 2023-05-26 | 2023-05-26 | Fixed output power detection circuit structure for realizing self-adaptive link selection |
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