Ultra wide band hopping frequency synthesizer based on digital up-conversion

A technology of digital up-conversion and frequency hopping, applied in automatic power control, electrical components, etc., can solve the problems of inability to increase digital modulation and low output bandwidth, achieve good in-band frequency response characteristics, increase frequency hopping bandwidth, The effect of low spurious output signal
CN103490776AInactive Publication Date: 2014-01-01CHINA ELECTRONIS TECH INSTR CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
CHINA ELECTRONIS TECH INSTR CO LTD
Publication Date
2014-01-01
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses an ultra wide band hopping frequency synthesizer based on digital up-conversion. The ultra wide band hopping frequency synthesizer based on digital up-conversion comprises a PC, a field-programmable gate array ( FPGA ), a clock generator, a DA converter and a low-pass filter, wherein a hopping frequency sequence storer, a hopping frequency carrier signal generating unit, a modulation base band interpolation filtering unit and an up-conversion unit are arranged in the FPGA, the hopping frequency sequence storer is connected with the hopping frequency carrier signal generating unit through a signal line, and the hopping frequency carrier signal generating unit and the modulation base band interpolation filtering unit are connected with the up-conversion unit through two signal lines respectively. According to the ultra wide band hopping frequency synthesizer based on digital up-conversion, a digital base band is directly modulated onto a carrier wave by means of digital up-conversion, and then hopping frequency signals modulated by any digits are generated, hopping frequency bandwidth reaches 800MHz, modulation bandwidth is larger than 100MHz, and carrier wave leakage and IQ imbalance are avoided.
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Claims

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