Broadband Self-Test Signal Source
A self-checking signal, wideband technology, applied in the field of frequency synthesizer, can solve the problem of frequency agile signal source limitation, and achieve the effect of reducing the size, simplifying the circuit, and outputting accurate frequency points.
Active Publication Date: 2017-12-08
南京誉葆科技股份有限公司
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Problems solved by technology
[0004] The purpose of the present invention is to provide a broadband self-test signal source, which is a frequency-agile signal source in a wider frequency range, and solves the problem of limitation of the frequency-agile signal source caused by the complexity and changeability of modern electronic systems
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[0029] In order to better understand the technical content of the present invention, specific embodiments are given together with the attached drawings for description as follows.
[0030] figure 1 Shown is a schematic diagram of the circuit principle of a broadband self-test signal source in an embodiment of the present invention, wherein a broadband self-test signal source includes a phase-locked loop, a frequency processing unit, a combined filter unit, a frequency synthesis unit, an output control unit and The power supply and logic control unit, under the power supply distribution and signal control provided by the power supply and logic control unit, a series of frequency hopping signals (S, C, X bands) generated by the phase-locked loop enter the frequency processing unit and undergo frequency changes. Generate radio frequency signals covering five frequency bands of L, S, C, X, and Ku, and then pass through combined filtering and frequency synthesis, and finally realiz...
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The present invention proposes a broadband self-inspection signal source, including: a power supply and a logic control unit provide the power supply distribution and control signals of the phase-locked loop, frequency processing unit, frequency synthesis unit, and output control unit; the phase-locked loop receives The external crystal oscillator signal and output the frequency hopping signals of S, C, and X bands to the frequency processing unit; the frequency processing unit performs frequency division, straight-through, and frequency multiplication processing on the frequency hopping signals output by the phase-locked loop to generate coverage of L, S, and C , X, the radio frequency signal of five frequency bands of Ku; The radio frequency signal that the combined filter unit outputs to the frequency processing unit carries out gating filter processing and filters out the unnecessary harmonic wave of the corresponding radio frequency signal; The frequency synthesis unit, the radio frequency signal to the combined filter unit output Perform frequency adjustment and strobe output; the output control unit performs power fine-tuning and power compensation on the radio frequency signal output by the frequency synthesis unit, and realizes multi-channel output through a power dividing circuit after being gated by a switch.
Description
technical field [0001] The invention relates to the technical field of frequency synthesizers, in particular to an agile frequency signal source capable of outputting radio frequency signals in five frequency bands of L, S, C, X, and Ku, and in particular to a broadband self-test signal source. Background technique [0002] With the development of communication, radar, electronic countermeasures and other fields, higher requirements are put forward for the phase noise, spurious and frequency conversion speed and frequency bandwidth of the frequency synthesizer. [0003] In the field of modern communications, electronic reconnaissance and electronic countermeasures are receiving more and more attention and attention. In order to improve the probability of interception and analyze and copy information such as the carrier frequency and intra-pulse modulation of the intercepted signal, and then achieve effective interference to the intercepted signal, Ultra-wideband, fast transi...
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IPC IPC(8): H03L7/16
Inventor 孙毅王志奎刘墩文林宇邓浩然黄一津王学芝孙伊娜马秀玲曹健
Owner 南京誉葆科技股份有限公司