Multi-channel bandwidth signal generation device and method with wide frequency band coverage

A signal generation device and frequency band coverage technology, applied in the directions of radio transmission systems, electrical components, transmission systems, etc. Large and other problems, to achieve the effect of rich external interfaces, wide frequency coverage, and high interface speed

Pending Publication Date: 2022-04-22
中电科思仪科技(安徽)有限公司
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0002] The multi-channel bandwidth signal generation device with wide frequency band coverage can be widely used in the field of signal generation and processing. It is suitable for high-speed scenarios with wide signal frequency band coverage, large signal bandwidth, and a large number of channels. With the development of communication, the demand for data rates is getting higher and higher. Therefore, the data volume and processing speed of communication equipment are getting higher and higher, so the performance requirements for signal processing devices are also increased accordingly. The signal processing devices in the early stage are all single signal bandwidths are not large, and most of them stay at low The processing of the frequency band cannot meet the requirements of current signal transmission and processing, and the number of channels is also limited, and the interface is single, which is not suitable for the existing data processing and transmission requirements of large-bandwidth and high-speed communications.

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  • Multi-channel bandwidth signal generation device and method with wide frequency band coverage

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Effect test

Embodiment 1

[0033] Such as figure 1 As shown, the present invention is a multi-channel bandwidth signal generating device with wide frequency band coverage, including a signal generating channel and an intermediate frequency baseband processing module.

[0034] Signal generating channel, including generating antenna, low noise amplifier module, transmitting channel module and local oscillator module;

[0035] An antenna configured for wireless signal transmission and frequency band coverage expansion;

[0036] A low-noise amplification module configured to amplify signals;

[0037] a transmitting channel module configured for signal modulation and signal transmission;

[0038] The local oscillator module is configured to configure signal frequency points;

[0039] IF baseband processing module, including multiple DAC, FPGA, DSP and DDR4;

[0040] a DAC configured for sampling transmission of the signal;

[0041] FPGA, including FPGA1 and FPGA2; configured for system control and data ...

Embodiment 2

[0052] On the basis of the above-mentioned embodiment 1, the present invention also mentions a method for generating a wide-bandwidth signal with multi-channel frequency band coverage, which specifically includes the following steps:

[0053] Step 1: DSP receives the main control data through the network port, combines and subpackages the main control data, and sends the data to FPGA1 through identification and marking;

[0054] Step 2: FPGA1 receives data through its SRIO port, stores the received data in DDR4, and transmits the stored data to FPGA2 through the high-speed optical port;

[0055] Step 3: FPGA2 performs interpolation processing on the received data, and then sends it to DAC;

[0056] Step 4: DAC sends the sent data to the transmit channel module according to the configured sampling rate and channel mode;

[0057] Step 5: Transmit the channel module, modulate the data to the corresponding frequency point, and control the power of the signal;

[0058] Step 6: Th...

Embodiment 3

[0060] On the basis of the foregoing embodiments, the present invention provides a baseband processing method, comprising the following steps:

[0061] Step S1: Multi-map the IQ data of the baseband signal to be generated, transmit it through the SRIO port, and then write DDR4 in FPGA1;

[0062] Step S2: Use a ping-pong structure when writing DDR4. When storing data, the rate of data to be generated is basically the rate of the SRIO port, and the writing rate of DDR can meet;

[0063]Step S3: In order to meet the write burst length design of DDR4 when writing DDR4, connect FIFO (First Input First Output, that is, the first-in-first-out queue), and at least meet the minimum amount of data in the design to start writing to DDR4;

[0064] Step S4: When reading DDR4, in order to avoid signal loss caused by too fast read rate, connect FIFO, and stop reading data from DDR when it is recognized that FIFO is almost full, so as to achieve continuous data reading;

[0065] Step S5: Aft...

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Abstract

The invention discloses a multichannel bandwidth signal generation device and method with wide frequency band coverage, and belongs to the field of signal processing and generation, the multichannel bandwidth signal generation device comprises a signal generation channel and an intermediate frequency baseband processing module, the signal generation channel comprises a generation antenna, a low noise amplification module, a transmission channel module and a local oscillator module; and the intermediate frequency baseband processing module comprises a plurality of DACs, an FPGA, a DSP and a DDR4. According to the invention, the external interfaces are abundant, the interface rate is relatively high, a multi-channel, high-frequency and large-signal-bandwidth generation channel can be built by using high-performance device components, and data management and processing are carried out through the DAC and the FPGA circuit; the multi-channel high-speed processing of complex signals, multiple signal channels, wide frequency coverage, large signal bandwidth and other characteristics are met, and a guarantee analysis platform is provided for scientific researchers engaged in complex signal processing.

Description

technical field [0001] The invention belongs to the field of signal processing and generation, and in particular relates to a device and method for generating wide bandwidth signals with multi-channel frequency band coverage. Background technique [0002] The multi-channel bandwidth signal generation device with wide frequency band coverage can be widely used in the field of signal generation and processing. It is suitable for high-speed scenarios with wide signal frequency band coverage, large signal bandwidth, and a large number of channels. With the development of communication, the demand for data rates is getting higher and higher. Therefore, the data volume and processing speed of communication equipment are getting higher and higher, so the performance requirements for signal processing devices are also increased accordingly. The signal processing devices in the early stage are all single signal bandwidths are not large, and most of them stay at low The processing of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B1/02H04B1/16H04B7/0452
CPCH04B1/02H04B7/0452H04B1/16
Inventor 袁行猛凌云志张煜徐兰天李运
Owner 中电科思仪科技(安徽)有限公司
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