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High-speed linear frequency modulation signal source

A linear frequency modulation signal and frequency modulation signal technology, applied in the direction of electrical components, power automatic control, etc., can solve the problems of low frequency modulation linearity, small frequency modulation bandwidth, low working frequency band, etc., to achieve large frequency modulation bandwidth, easy production and debugging, low cost effect

Inactive Publication Date: 2005-06-29
TAIYUAN UNIV OF TECH
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Problems solved by technology

[0003] The purpose of the high-speed linear frequency modulation signal source of the present invention is to provide a kind of frequency modulation signal source that can generate high linearity at high speed, solve the problems of low frequency modulation linearity, low working frequency band, small frequency modulation bandwidth and low frequency modulation rate existing in the existing signal source, and at the same time Facilitate cost reduction and facilitate production and commissioning

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Embodiment Construction

[0024]The realization of the high-speed linear frequency modulation signal source of the present invention can be based on figure 1 , through reasonable selection of specific components and design circuits, such as direct digital frequency synthesizer AD9956 and digital phase-locked loop ADF4106 produced by ANALOG, the highest frequency of ADF4106 can reach 6000MHz, without adding a microwave frequency divider It can control the voltage-controlled oscillator below 6000MHz. By selecting the corresponding voltage-controlled oscillator, the signal source can realize high-speed linear frequency modulation output below 6000MHz. If you add a microwave frequency divider and select the corresponding voltage-controlled oscillator, you can Achieve chirp output in higher frequency bands. The programmable logic circuit can choose the MAX7000 series programmable logic device of ALTERA Company, and the dual-port memory can choose the 70V3389S4BC of IDT Company. The 70V3389S4BC has a 64K st...

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Abstract

A high speed linear FM signal source is the one of broad band generating high linearity, which can realize output of high speed high linearity FM signals having two working states of obtaining reference voltage and high speed FM output, the rate of which is controlled by clock signals or length of sweep digital volume sequence, at the same time, it can be the signal source for free FM property.

Description

1. Technical field [0001] The high-speed linear frequency modulation signal source of the present invention belongs to the field of electronic technology, specifically a signal source capable of generating high linearity frequency modulation signals at high speed, and can be widely used in the fields of electronic measurement, radar, traffic navigation and the like. 2. Technical background [0002] Broadband chirp signal sources are widely used in electronic measurement, traffic navigation, car collision avoidance, FM radar, compression receivers, radar simulators, electronic warfare and other fields. The main technologies for generating chirp signals include analog technology and digital technology, analog technology The voltage-controlled oscillator is mainly modulated directly by sweeping frequency voltage. Due to the inherent nonlinearity of the VCO, that is, there is a relatively large nonlinear relationship between the output frequency and the modulation voltage, when a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H03L7/00
Inventor 阎高伟谢刚谢克明王丽艳
Owner TAIYUAN UNIV OF TECH
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