Highly-efficient swept-frequency signal generation method matching with FFT processing
A technology of sweeping frequency signal and generating method, applied in electrical components and other directions, can solve the problems of waste of signal processing capacity, inability to fully utilize the processing capacity of the signal receiving end, mismatch of processing capacity, etc., and achieves simple structure, high reliability, The effect of improved processing efficiency
Active Publication Date: 2017-12-29
NO 54 INST OF CHINA ELECTRONICS SCI & TECH GRP
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[0003] It can be seen that the processing capability of the signal receiving end cannot be fully utilized due to the mismatch between the frequency sweep signal generated by the signal output terminal and the processing capability of the signal receiving terminal, which is a serious waste of signal processing capability
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[0035] In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings.
[0036] An efficient frequency sweep signal generation method matching FFT processing, which is applied to a frequency sweep signal generator to match the signal processing capability of the receiving end, which sequentially performs analog down conversion, A / D conversion, and digital zero on the signal Orthogonal processing of intermediate frequency, sampling rate conversion and 2 N Point FFT processing, the efficient frequency sweep signal generation method includes the following steps:
[0037] (1) Generated by the sweep control unit according to the specific sweep signal requirements 2 N Point waveform data, the waveform data matches the FFT processing at the receiving end, where N is a natural number;
[0038] (2) 2 wil...
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The invention discloses a highly-efficient swept-frequency signal generation method matching with FFT processing, which belongs to the technical field of radio frequency network analysis. The highly-efficient swept-frequency signal generation method comprises the steps of generating and storing the waveform data of the highly-efficient swept-frequency signal matching with the FFT processing of a receiving channel; conducting counting according to the sampling rate of the FFT analysis; synchronously reading the storage waveform, changing the sampling rate; conducting digital frequency conversion; conducting analog-digital transformation, and conducting analog up-conversion. The highly-efficient swept-frequency signal can be generated. The invention is advantageous in that with the adoption of FFT to do network analysis, efficiency is high, response speed is fast, integration degree is high, and realization is simple; the highly-efficient swept-frequency signal generation method is an important improvement to the prior art.
Description
Technical field [0001] The invention relates to the technical field of frequency sweep signal generation and digital network analysis, in particular to an efficient frequency sweep signal generation method matching FFT processing. Background technique [0002] In the prior art, the frequency sweep output of most network analysis equipment and the channel calibration of equipment such as spectrum analyzers use a single frequency signal for frequency scanning, each time a single frequency signal is generated, and with the development of digital information technology At present, the current signal receiving end equipment can use Fast Fourier Transform (FFT for short) for signal processing. FFT can process a large number of input signals of different frequencies at the same time and has powerful signal processing capabilities. [0003] It can be seen that because the frequency sweep signal generated at the signal output end does not match the processing capability of the signal receiv...
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IPC IPC(8): H03B23/00
CPCH03B23/00
Inventor 李强慈国辉张红涛
Owner NO 54 INST OF CHINA ELECTRONICS SCI & TECH GRP