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

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.

Description

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AI Technical Summary

Benefits of technology

In this technology, it allows for more efficient generation of very wide range frequencies with faster switch times compared to traditional methods like phase locked loop (PLL) or voltage controlled oscillator (VCO). Additionally, it can produce signals without distortion caused by interference from external sources while maintaining their accuracy over longer periods due to its ability to quickly change between different modes at once. Overall, these improvements improve the overall efficiency and effectiveness of the current frequency hopper system used today.

Problems solved by technology

Technological Problem addressed in this patents relates to improving the efficiency and effectiveness of frequency Hoppm technology for use in mobile communications devices like cellular phones. Current techniques have limitations including slow convergence times, limited range scanning capabilities, difficulty in adding different types of modulations without causing interruptions, complicated hardware configurations, and increased power consumption compared to more efficient digital technologies.

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