CN109150216B - Dual-band receiver and automatic gain control method thereof - Google Patents
Dual-band receiver and automatic gain control method thereof Download PDFInfo
- Publication number
- CN109150216B CN109150216B CN201710442506.1A CN201710442506A CN109150216B CN 109150216 B CN109150216 B CN 109150216B CN 201710442506 A CN201710442506 A CN 201710442506A CN 109150216 B CN109150216 B CN 109150216B
- Authority
- CN
- China
- Prior art keywords
- frequency
- radio
- power detection
- band
- signal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- 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
-
- 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
- H04B1/005—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 adapting radio receivers, transmitters andtransceivers for operation on two or more bands, i.e. frequency ranges
- H04B1/0053—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 adapting radio receivers, transmitters andtransceivers for operation on two or more bands, i.e. frequency ranges with common antenna for more than one band
- H04B1/0057—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 adapting radio receivers, transmitters andtransceivers for operation on two or more bands, i.e. frequency ranges with common antenna for more than one band using diplexing or multiplexing filters for selecting the desired band
Abstract
The invention discloses a dual-band receiver and an automatic gain control method thereof. Wherein, the dual band receiver includes: the radio frequency processing module is used for carrying out frequency division processing on the received dual-band radio frequency signal; the gain control module is used for adjusting the gain of the radio-frequency signal of the corresponding frequency band after frequency division of the radio-frequency processing module according to the power detection result of the digital signal of each frequency band of the power detection module; and the power detection module is used for sampling the two frequency band radio-frequency signals adjusted by the gain control module into digital signals, respectively carrying out power detection on the digital signals of each frequency band, and outputting the power detection signals to the gain control module. The invention ensures the best working state of the system under any output power without increasing the hardware cost, and has the advantages of less used devices, small PCB occupation area, low power consumption and the like.
Description
Technical Field
The invention relates to the technical field of communication, in particular to a dual-band receiver and an automatic gain control method thereof.
Background
Aiming at the requirement of cell splitting, a base station must support dual frequency bands, and meanwhile, the size of the base station is required to be reduced, and the bandwidth is required to be increased. Currently, a receiver supporting dual bands is realized only by doubling the number of channels. However, with the realization method, as the number of channels increases, the number of devices used by the link is doubled, which results in that the area of the single board and the cost used are doubled; in addition, under the condition of internal blockage, the receiving sensitivity of different frequency bands is different, and the current dual-band receiver cannot realize dual-band gain control only according to the index of a single frequency band.
Disclosure of Invention
The invention provides a dual-band receiver and an automatic gain control method thereof, which are used for solving the problem that the dual-band receiver in the prior art cannot realize the automatic control of the dual-band gain.
In order to achieve the purpose, the invention adopts the following technical scheme:
according to an aspect of the present invention, there is provided a dual band receiver including:
the radio frequency processing module is used for carrying out frequency division processing on the received dual-band radio frequency signal;
the gain control module is used for adjusting the gain of the radio-frequency signal of the corresponding frequency band after frequency division of the radio-frequency processing module according to the power detection result of the digital signal of each frequency band of the power detection module;
and the power detection module is used for sampling the two frequency band radio frequency signals adjusted by the gain control module into digital signals, respectively carrying out power detection on the digital signals of each frequency band, and outputting power detection signals to the gain control module.
Optionally, the radio frequency processing module includes:
the low-noise amplifier is used for carrying out low-noise amplification processing on the received dual-band radio frequency signal;
and the frequency selection filter is used for filtering the dual-band radio-frequency signal subjected to the low-noise amplification processing by the low-noise amplifier and dividing the radio-frequency signal into radio-frequency signals of two frequency bands.
Optionally, the frequency band power detection module includes:
the broadband combiner is used for carrying out broadband combining processing on the radio frequency signals of the two frequency bands adjusted by the gain control module;
the radio frequency direct sampling unit is used for sampling the radio frequency signal combined by the broadband combiner and converting the radio frequency signal into a combined digital signal;
the direct digital control DDC processing unit is used for carrying out frequency reduction processing on the combined digital signal and dividing the frequency-reduced radio-frequency signal into digital signals of two frequency bands;
and the power detection unit is used for respectively carrying out power detection on the digital signals of each frequency band after frequency division.
Optionally, the frequency band power detection module further includes a peak power detection unit, configured to perform peak power detection on the combined digital signal processed by the radio frequency direct acquisition unit;
the gain control module is further configured to perform gain adjustment on the radio frequency signals of the two frequency bands divided by the radio frequency processing module according to the power detection signal of the power detection unit and the power peak detection signal of the peak power detection unit.
Optionally, the gain control module is specifically configured to:
when the peak power detection unit outputs a detection signal with a power peak value larger than a preset peak threshold value and the power detection unit outputs a detection signal with a certain frequency band or a plurality of frequency band digital signal powers larger than a preset power threshold value, attenuating the corresponding frequency band radio frequency signal after frequency division by preset steps.
According to an aspect of the present invention, there is provided an automatic gain control method, including:
carrying out frequency division processing on the received dual-band radio frequency signal;
converting the two frequency band radio frequency signals after frequency division into digital signals respectively, and performing power detection on the digital signals of each frequency band respectively;
and adjusting the gain of the radio-frequency signal of the corresponding frequency band after frequency division according to the power detection result of the digital signal of each frequency band.
Optionally, the frequency division processing on the received radio frequency signal includes:
carrying out low-noise amplification processing on the received dual-band radio frequency signal;
and filtering the dual-band radio-frequency signal subjected to the low-noise amplification treatment, and dividing the radio-frequency signal into two frequency band radio-frequency signals.
Optionally, the converting the frequency-divided two frequency band radio frequency signals into digital signals respectively, and performing power detection on the digital signals of each frequency band respectively includes:
carrying out broadband combination processing on the radio-frequency signals of the two frequency bands, and sampling the radio-frequency signals after combination to convert the radio-frequency signals into combined digital signals;
and performing frequency reduction processing on the combined digital signal, dividing the frequency-reduced radio-frequency signal into digital signals of two frequency bands, and performing power detection on the digital signals of each frequency band respectively.
Optionally, after the sampling of the combined radio frequency signal is converted into the combined digital signal, the method further includes:
detecting the peak power of the combined digital signal;
when the gain of the frequency-divided corresponding frequency band radio frequency signal is adjusted according to the power detection result of the digital signal of each frequency band, the method further comprises the following steps:
and adjusting the gain of the radio-frequency signal of the corresponding frequency band after frequency division according to the peak power detection result of the combined digital signal and the power detection result of the digital signal of each frequency band.
Optionally, the adjusting the gain of the frequency-divided radio frequency signal in the corresponding frequency band according to the peak power detection result of the combined digital signal and the power detection result of the digital signal in each frequency band includes:
and when the power peak value of the combined digital signal of the power peak detection signal is greater than a preset peak value threshold value and the power of the digital signal of one or more frequency bands of the power peak detection signal is greater than a preset power threshold value, attenuating the radio-frequency signal of the corresponding frequency band after frequency division by preset steps.
The invention has the following beneficial effects:
the dual-band receiver and the automatic gain control method thereof provided by the embodiment of the invention ensure that the receiver can realize the best working state of the system under any output power on the premise of not increasing the hardware cost, and have the advantages of small number of used devices, small PCB occupied area, low power consumption and the like.
The foregoing description is only an overview of the technical solutions of the present invention, and the embodiments of the present invention are described below in order to make the technical means of the present invention more clearly understood and to make the above and other objects, features, and advantages of the present invention more clearly understandable.
Drawings
In order to illustrate the embodiments or prior art of the present invention more clearly, the drawings needed for the embodiments or prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings can be obtained by those skilled in the art without inventive exercise.
Fig. 1 is a schematic block diagram of a dual band receiver according to an embodiment of the present invention;
fig. 2 is a flow chart of an automatic gain control implementation of the dual band receiver of fig. 1;
fig. 3 is a flowchart of an automatic gain control method of a dual band receiver according to an embodiment of the present invention.
Detailed Description
The present invention will be described in further detail below with reference to the drawings and examples. It should be understood that the specific embodiments described herein are merely illustrative of the invention and do not limit the invention.
As shown in fig. 1, the dual band receiver provided in the embodiment of the present invention includes a radio frequency processing module 11, a gain processing module 12, and a power detection module 13; wherein the content of the first and second substances,
the radio frequency processing module 11 is configured to perform frequency division processing on the received dual-band radio frequency signal; the dual-band radio frequency signal is a mixed radio frequency signal of two frequency bands, and after frequency division processing is carried out, the radio frequency signals of the two frequency bands are separated.
And the gain control module 12 is configured to adjust the gain of the radio-frequency signal in the corresponding frequency band after frequency division by the radio-frequency processing module 11 according to the power detection result of the digital signal in each frequency band of the power detection module 13. Here, the gain control module 12 is configured to adjust the rf signals of the two frequency bands divided by the rf processing module 11 according to the digital signal detected by the power detection module 13.
And the power detection module 13 is configured to sample the two frequency band radio frequency signals adjusted by the gain control module 12 into digital signals, perform power detection on the digital signals of each frequency band, and output the power detection signals to the gain control module 12.
Therefore, the dual-band receiver in the embodiment of the present invention performs frequency division processing on the dual-band radio frequency signals, then samples the radio frequency signals into digital signals, performs power detection on each digital signal, and adjusts the radio frequency signal of each frequency band in the received dual-band radio frequency signals according to the detection result. Therefore, the embodiment of the invention can adjust the receiver to the best working state under any output power under the condition of not increasing the hardware cost, and realizes the accurate receiving of the dual-band signal.
The technical contents of the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1, a dual band receiver is provided in an embodiment of the present invention. Specifically, in the dual band receiver, the radio frequency processing module 11 includes a low noise amplifier and a frequency selective filter. The low-noise amplifier is used for carrying out low-noise amplification processing on the received dual-band radio frequency signal. The low noise amplifier has broadband characteristics, and the performance can cover two required frequency bands. And the frequency selection filter is used for filtering the dual-band radio frequency signal subjected to the low-noise amplification processing by the low-noise amplifier and carrying out frequency division processing on the radio frequency signal subjected to the filtering processing. As shown in fig. 1, the frequency selective filter includes a band 1 filter and a band 2 filter, which implement separation of two radio frequency signals of band 1 and band 2, and perform filtering processing on the radio frequency signal of each band.
The gain control module 12 includes two independent gain control modules 12, i.e., a band 1 gain control unit and a band 2 gain control unit, for independently controlling gains of radio frequency signals in different bands. The two gain control units may attenuate signals of corresponding frequency bands in the same step or different steps, which is not limited herein.
The power detection module 13 includes a broadband combiner, a radio frequency direct acquisition unit, and a direct digital control DDC processing unit. The broadband combiner is used for carrying out broadband combining processing on the two frequency band radio-frequency signals after the frequency band 1 gain control unit and the frequency band 2 gain control unit are independently adjusted. The broadband combiner here must be broadband in order to be able to support the total bandwidth of the two frequency bands. And the radio frequency direct sampling unit is used for sampling the radio frequency signal combined by the broadband combiner and converting the radio frequency signal into a combined digital signal. The DDC processing unit is used for carrying out frequency reduction processing on the combined digital signal and dividing the frequency-reduced radio-frequency signal into digital signals of two frequency bands; the power detection unit comprises frequency band 1 power detection and frequency band 2 power detection and is used for performing power detection on the frequency-divided digital signal of the frequency band 1 and the frequency band 2.
Therefore, in this embodiment, when the analog-to-digital conversion of the rf signal is implemented, the simultaneous conversion of the two frequency band rf signals can be implemented through a data processing path formed by the wideband combiner, the rf direct sampling unit, and the DDC processing unit, so that the number of devices used is reduced, the occupied area of the PCB board is reduced, and the hardware implementation cost of the receiver is effectively reduced, compared with the dual-band receiver implemented by increasing the number of paths.
Further, in order to ensure the normal operation of the DDC processing unit and prevent the saturation of the device, in an embodiment, the frequency band power detection module 13 further includes a peak power detection unit. The peak power detection unit is located between the DDC processing unit and the radio frequency direct acquisition unit and is used for detecting the peak power of the combined digital signal processed by the radio frequency direct acquisition unit. The output peak power detection signal is used to control the gain control module 12 to perform gain control. Here, the gain control module 12 needs to perform gain adjustment on the radio frequency signals of the two frequency bands divided by the radio frequency processing module 11 according to the power detection signal of the power detection unit and the power peak detection signal of the peak power detection unit.
Specifically, the gain control module 12 performs gain adjustment on the radio frequency signals of the two frequency bands divided by the radio frequency processing module 11 according to the power detection signal of the power detection unit and the power peak detection signal of the peak power detection unit, which includes the following steps:
when the peak power detection unit outputs a detection signal with a power peak value larger than a preset peak threshold value and the power detection unit outputs a detection signal with the power of one or more frequency band digital signals larger than a preset power threshold value, attenuating the corresponding frequency band radio-frequency signals subjected to frequency division by preset steps; alternatively, the first and second electrodes may be,
when the peak power detection unit outputs a detection signal with a power peak value less than or equal to a preset peak threshold value, gain adjustment is not performed on the radio-frequency signal of each frequency band after frequency division; alternatively, the first and second electrodes may be,
when the peak power detection unit outputs a detection signal with a power peak value larger than a preset peak threshold value and the power detection unit outputs a detection signal with the power of one or more frequency band digital signals smaller than or equal to the preset power threshold value, the gain adjustment of the radio frequency signals of the corresponding frequency bands after frequency division is not performed.
Based on the above, the peak power of the dual-band digital signal and the power of the digital signal in each band are detected, so that not only can the saturation of the DDC processing unit be effectively avoided and the DDC processing unit be in the optimal working state, but also the independent control of the gain adjustment of the radio frequency signals in the two bands can be realized without increasing the cost of hardware devices, and the receiver can be in the best working state under any output power.
Optionally, in an embodiment of the present invention, the peak power detection unit and the power detection unit both perform link gain control through the status bit sending link control gain control module 12. Here, the detection threshold of the peak power detection unit is set as AdBFs, the power detection threshold of the frequency band 1 is set as B dBFs, and the power detection threshold of the frequency band 2 is set as C dBFs. Specifically, as shown in fig. 2, when implementing automatic gain control, the processing flow includes the following steps:
the peak power detection unit judges whether the power peak detection exceeds a detection threshold A dBFs: if the detection threshold is exceeded A dBFs, the output detection state bit is 1, and the power detection unit carries out detection judgment of frequency-division power; if not, outputting a detection state bit as 0;
when the power detection unit detects and judges the frequency division band power, whether the power detection value of the frequency band 1 exceeds a detection threshold BdBFs is judged, and if the power detection value of the frequency band 1 exceeds the detection threshold BdBdBFs, a power detection result status bit 1 of the frequency band 1 is output; otherwise, outputting a power detection result state bit 0 of the frequency band 1, and performing power detection judgment of the frequency band 2; when the power detection of the frequency band 2 is judged, judging whether the power detection value of the frequency band 2 exceeds a detection threshold CdBFs, and if the power detection value of the frequency band 2 exceeds the detection threshold CdBFs, outputting a power detection result state bit 1 of the frequency band 2; otherwise, outputting the power detection result status bit 0 of the frequency band 2.
The gain control unit receives the state detection results of the peak power detection unit and the power detection unit and performs gain control according to the state bits output by the two units;
if the received status bit is 110, the gain control unit of the frequency band 1 attenuates in preset XdB steps;
if the received status bit is 101, the gain control unit of the frequency band 2 attenuates in preset XdB steps;
if the received status bit is 111, the gain control unit of the frequency band 1 and the gain control unit of the frequency band 2 both perform XdB stepping attenuation;
if other status bits are received, e.g., status bits 0XX, 100, no gain attenuation is performed.
It is understood that all power detection in the power detection module 13 is implemented in digital part, and can be implemented by simple devices, for example, by outputting status bits through a comparator, and controlling the gain control module 12 to perform gain adjustment through the status bits. Therefore, the invention does not need to carry out gain control through a processor, reduces the hardware realization cost and greatly reduces the execution time of automatic gain adjustment.
Based on the above dual-band receiver, an embodiment of the present invention further provides an automatic gain control method, as shown in fig. 3, which specifically includes the following steps:
301, performing frequency division processing on the received dual-band radio frequency signal;
step 302, converting the two frequency band radio frequency signals after frequency division into digital signals respectively, and performing power detection on the digital signals of each frequency band respectively;
step 303, adjusting the gain of the frequency-divided radio frequency signal of the corresponding frequency band according to the power detection result of the digital signal of each frequency band.
Based on the above, the automatic gain control method according to the embodiment of the present invention samples the radio frequency signals into digital signals respectively after performing frequency division processing on the dual-band radio frequency signals, performs power detection on each digital signal respectively, and adjusts the radio frequency signal of each frequency band in the received dual-band radio frequency signals respectively according to the detection result, so that the receiver can be adjusted to the best working state under any output power, thereby achieving accurate reception of the dual-band signals.
Optionally, the frequency division processing on the received radio frequency signal includes:
carrying out low-noise amplification processing on the received dual-band radio frequency signal;
and filtering the dual-band radio-frequency signal subjected to the low-noise amplification treatment, and dividing the radio-frequency signal into two frequency band radio-frequency signals.
Optionally, the converting the two frequency band radio frequency signals after frequency division into digital signals respectively, and performing power detection on the digital signals of each frequency band respectively includes:
carrying out broadband combination processing on the radio-frequency signals of the two frequency bands, and sampling the radio-frequency signals after combination to convert the radio-frequency signals into combined digital signals; and performing frequency reduction processing on the combined digital signal, dividing the frequency of the radio-frequency signal subjected to frequency reduction into digital signals of two frequency bands, and then respectively performing power detection on the digital signals of each frequency band.
Therefore, when the radio-frequency signal is subjected to analog-to-digital conversion, the processing of the dual-band radio-frequency signal is realized without increasing the number of channels, and the number of devices can be reduced by combining and sampling the signal in a frequency division processing mode, so that the occupied area of a PCB (printed circuit board) is reduced, and the hardware realization cost is reduced.
Optionally, after the combined radio frequency signal is sampled and converted into a combined digital signal, the method further includes:
detecting the peak power of the composite digital signal;
when the gain of the radio frequency signal of the corresponding frequency band after frequency division is adjusted according to the power detection result of the digital signal of each frequency band, the method further comprises the following steps:
and adjusting the gain of the radio-frequency signal of the corresponding frequency band after frequency division according to the peak power detection result of the combined digital signal and the power detection result of the digital signal of each frequency band.
It can be known that, in this embodiment, when the peak power of the dual-band digital signal is small, the gain adjustment is not needed, and only when the peak power is too large, the adjustment is not needed according to the power detection condition of the sub-band. Therefore, the processing efficiency of the gain adjustment can be effectively improved by the peak power detection of the dual-band digital signal.
Optionally, adjusting the gain of the frequency-divided radio-frequency signal of the corresponding frequency band according to the peak power detection result of the combined digital signal and the power detection result of the digital signal of each frequency band, includes:
when the power peak value of the combined digital signal of the power peak detection signal is greater than a preset peak value threshold value and the power of the digital signal of one or more frequency bands of the power peak detection signal is greater than a preset power threshold value, attenuating the radio-frequency signal of the corresponding frequency band after frequency division by preset steps; alternatively, the first and second electrodes may be,
when the power peak detection signal is a detection signal in which the power peak of the combined digital signal is less than or equal to a preset peak threshold, the gain adjustment is not performed on the radio-frequency signal of each frequency band after frequency division; alternatively, the first and second electrodes may be,
when the power peak value of the combined digital signal as the power peak detection signal is greater than the preset peak value threshold value and the power of the digital signal of one or more frequency bands as the power peak detection signal is less than or equal to the preset power threshold value, the gain adjustment is not performed on the radio-frequency signal of the corresponding frequency band after frequency division.
Specifically, the peak power detection result and the power detection result of the digital signal of each frequency band may be implemented by a status bit transmission link. And adjusting the gain of the radio frequency signal of each frequency band according to the state bit. The method comprises the following specific steps:
judging whether the power peak detection exceeds a preset peak threshold value: if the peak value exceeds the preset peak value threshold value, outputting a detection state bit of 1, and performing detection judgment of the sub-band power; if not, outputting a detection state bit as 0;
when the power detection judgment of the frequency band is carried out, judging whether the power detection value of the frequency band 1 exceeds a preset power threshold value, and if the power detection value of the frequency band 1 exceeds the preset power threshold value, outputting a power detection result status bit 1 of the frequency band 1; otherwise, outputting a power detection result state bit 0 of the frequency band 1, and performing power detection judgment of the frequency band 2; when the power detection of the frequency band 2 is judged, judging whether the power detection value of the frequency band 2 exceeds a preset power threshold value, and if the power detection value of the frequency band 2 exceeds the preset power threshold value, outputting a power detection result state bit 1 of the frequency band 2; otherwise, outputting a power detection result state bit 0 of the frequency band 2;
when the status bit is 110, attenuating the radio frequency signal of the frequency band 1 by a preset XdB step; if the state bit is 101, attenuating the radio frequency signal of the frequency band 2 by a preset XdB step; if the status bit is 111, attenuating the radio frequency signals of the frequency band 1 and the frequency band 2 simultaneously by preset XdB steps; if other status bits are received, e.g., status bits 0XX, 100, no gain attenuation is performed.
In summary, in the dual-band receiver and the automatic gain control method thereof in the embodiments of the present invention, through combining, sampling and frequency dividing processes in the subsequent power detection process, under the condition that the hardware cost is not increased, the radio frequency signals of two frequency bands of the receiver can be adjusted to the best working state under any output power, so as to achieve accurate receiving of the dual-band signals; in addition, all power detection is realized in a digital part, a processor such as a DSP is not needed to carry out gain control, and a state bit is directly output to carry out gain control, so that the execution time of automatic gain control is greatly reduced. In addition, the dual-band receiver also has the effects of small number of used devices, small PCB occupied area, low power consumption and the like.
It will be understood by those skilled in the art that all or part of the processes of the methods of the embodiments described above can be implemented by hardware related to instructions of a computer program, which can be stored in a computer-readable storage medium, and when executed, can include the processes of the embodiments of the methods described above.
Although the present application has been described with reference to embodiments, those skilled in the art will appreciate that there are numerous variations and permutations of the present application without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (6)
1. A dual band receiver, comprising:
the radio frequency processing module is used for carrying out frequency division processing on the received dual-band radio frequency signal;
a power detection module comprising: the device comprises a broadband combiner, a radio frequency direct acquisition unit, a peak power detection unit, a direct digital control DDC processing unit and a power detection unit;
the broadband combiner is used for carrying out broadband combining processing on the radio frequency signals of the two frequency bands;
the radio frequency direct sampling unit is used for sampling the radio frequency signal combined by the broadband combiner and converting the radio frequency signal into a combined digital signal;
the direct digital control DDC processing unit is used for carrying out frequency reduction processing on the combined digital signal and dividing the frequency-reduced radio-frequency signal into digital signals of two frequency bands;
the power detection unit is used for respectively carrying out power detection on the digital signals of each frequency band after frequency division;
the peak power detection unit is used for carrying out peak power detection on the combined digital signal processed by the radio frequency direct acquisition unit;
the dual band receiver further comprises: and the gain control module is used for performing gain adjustment on the radio-frequency signals of the two frequency bands divided by the radio-frequency processing module according to the power detection result of the power detection unit and the peak power detection result of the peak power detection unit.
2. The dual band receiver of claim 1, wherein said rf processing module comprises:
the low-noise amplifier is used for carrying out low-noise amplification processing on the received dual-band radio frequency signal;
and the frequency selection filter is used for filtering the dual-band radio-frequency signal subjected to the low-noise amplification processing by the low-noise amplifier and dividing the radio-frequency signal into radio-frequency signals of two frequency bands.
3. The dual band receiver of claim 1, wherein the gain control module is specifically configured to:
when the peak power detection unit outputs a detection signal with the peak power larger than a preset peak threshold value and the power detection unit outputs a detection signal with the power of one or more frequency band digital signals larger than a preset power threshold value, the frequency-divided corresponding frequency band radio-frequency signals are attenuated in preset steps.
4. An automatic gain control method, comprising:
carrying out frequency division processing on the received dual-band radio frequency signal;
carrying out broadband combining processing on the radio frequency signals of the two frequency bands;
sampling the combined radio frequency signal and converting the sampled radio frequency signal into a combined digital signal;
performing frequency reduction processing on the combined digital signal, and dividing the frequency-reduced radio-frequency signal into digital signals of two frequency bands;
respectively carrying out power detection on the digital signals of each frequency band after frequency division;
carrying out peak power detection on the combined digital signal processed by the radio frequency direct acquisition unit;
and adjusting the gain of the radio-frequency signal of the corresponding frequency band after frequency division according to the peak power detection result of the combined digital signal and the power detection result of the digital signal of each frequency band.
5. The automatic gain control method of claim 4, wherein said frequency dividing the received radio frequency signal comprises:
carrying out low-noise amplification processing on the received dual-band radio frequency signal;
and filtering the dual-band radio-frequency signal subjected to the low-noise amplification treatment, and dividing the radio-frequency signal into two frequency band radio-frequency signals.
6. The automatic gain control method of claim 4 or 5, wherein the adjusting the gain of the divided radio frequency signals of the corresponding frequency band according to the peak power detection result of the combined digital signal and the power detection result of the digital signal of each frequency band comprises:
when the peak power of the combined digital signal of the peak power detection signal is greater than a preset peak threshold value and the power of the digital signal of one or more frequency bands of the power detection signal is greater than a preset power threshold value, attenuating the radio-frequency signal of the corresponding frequency band after frequency division by preset steps.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710442506.1A CN109150216B (en) | 2017-06-13 | 2017-06-13 | Dual-band receiver and automatic gain control method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710442506.1A CN109150216B (en) | 2017-06-13 | 2017-06-13 | Dual-band receiver and automatic gain control method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109150216A CN109150216A (en) | 2019-01-04 |
| CN109150216B true CN109150216B (en) | 2021-01-22 |
Family
ID=64829880
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710442506.1A Active CN109150216B (en) | 2017-06-13 | 2017-06-13 | Dual-band receiver and automatic gain control method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109150216B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111884727B (en) * | 2020-07-15 | 2021-11-16 | 杭州电子科技大学 | High-speed photon digital-to-analog conversion method and system based on digital mapping |
| CN115296733B (en) * | 2022-07-18 | 2024-02-06 | 三维通信股份有限公司 | Uplink combined signal anti-overflow method, device, DAS system and storage medium |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7116955B2 (en) * | 2002-09-24 | 2006-10-03 | Ati Technologies, Inc. | Dual loop automatic gain control |
| CN102315858A (en) * | 2011-05-04 | 2012-01-11 | 苏州全波通信技术有限公司 | Multiple-channel radio-frequency signal adaptation system |
| CN103580704A (en) * | 2012-07-25 | 2014-02-12 | 中国科学院微电子研究所 | Receiver device adopting automatic gain control and method for controlling receiver by means of automatic gain |
| CN106330220A (en) * | 2015-06-29 | 2017-01-11 | 中兴通讯股份有限公司 | Signal receiving device and apparatus, and communication device |
| CN106656243A (en) * | 2015-10-27 | 2017-05-10 | 中兴通讯股份有限公司 | Multi-band transceiver and multi-band radio frequency signal sending and receiving method |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202906888U (en) * | 2012-09-17 | 2013-04-24 | 泰凌微电子（上海）有限公司 | Automatic gain control device for constant envelop receiver |
-
2017
- 2017-06-13 CN CN201710442506.1A patent/CN109150216B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7116955B2 (en) * | 2002-09-24 | 2006-10-03 | Ati Technologies, Inc. | Dual loop automatic gain control |
| CN102315858A (en) * | 2011-05-04 | 2012-01-11 | 苏州全波通信技术有限公司 | Multiple-channel radio-frequency signal adaptation system |
| CN103580704A (en) * | 2012-07-25 | 2014-02-12 | 中国科学院微电子研究所 | Receiver device adopting automatic gain control and method for controlling receiver by means of automatic gain |
| CN106330220A (en) * | 2015-06-29 | 2017-01-11 | 中兴通讯股份有限公司 | Signal receiving device and apparatus, and communication device |
| CN106656243A (en) * | 2015-10-27 | 2017-05-10 | 中兴通讯股份有限公司 | Multi-band transceiver and multi-band radio frequency signal sending and receiving method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109150216A (en) | 2019-01-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR100369272B1 (en) | Method and apparatus for increasing receiver immunity to interference | |
| CN102780533B (en) | Adaptive wireless communication receiver | |
| CN106330220B (en) | Signal receiving method and device and communication equipment | |
| US8797927B2 (en) | RF circuit system and method of increasing the isolation between two wireless communications standards within an RF circuit system | |
| US8774858B2 (en) | Adaptive RF saturation detection in a wireless device implementing multiple wireless protocols | |
| CN105610453A (en) | High-gain narrowband radio frequency receiver | |
| CN111478710B (en) | Method and system for suppressing adjacent channel interference, receiver and communication system | |
| CN102291157A (en) | Multi-system channel multiplex circuit | |
| US20100136939A1 (en) | Gain control apparatus and method in receiver of multiband ofdm system | |
| CN109150216B (en) | Dual-band receiver and automatic gain control method thereof | |
| US20130058439A1 (en) | Receiver | |
| CN104821861B (en) | A kind of signal processing method and equipment | |
| CN101741402B (en) | Wireless receiver applicable to ultra-large dynamic range under wireless communication system | |
| US20040162043A1 (en) | System and method for compensating receiver gain using a mixed signal technique by implementing both automatic gain control (AGC) and bit-normalization | |
| JP6631276B2 (en) | Wireless device and receiving method | |
| CN111162808A (en) | Radio frequency receiving circuit, receiver and base station | |
| CN101682341B (en) | Increasing sensitivity of radio receiver | |
| CN105451312A (en) | Transmitting power control system and method and mobile communication terminal | |
| CN116419383B (en) | Automatic gain control method, circuit and equipment | |
| CN214045603U (en) | Communication device and receiver | |
| CN112235009B (en) | Communication method and system | |
| CN105024655B (en) | The noise optimization control method and circuit of LNA link | |
| US20240039569A1 (en) | Signal receiver and signal receiving method | |
| US11463119B2 (en) | High frequency radio including an adjustable-bandwidth tunable bandpass filter for improved detection of incoming calls and methods for processing incoming calls | |
| CN210693907U (en) | Radio frequency receiving circuit, receiver and base station |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |