Design of a dds based frequency synthesizer
WebOct 2, 2024 · Normally there are two main ways to design and implement a real frequency synthesizer. One is to use a dedicated DDS integrated chip to synthesize frequency. The other is to use FPGA to achieve DDS frequency synthesis. The first method is usually realized by using a microprocessor to drive the DDS integrated chip. WebNov 16, 2024 · In this paper, a precise DDS method using compound frequency tuning word is proposed, which improves the accuracy of synthesized signals at any frequency points on the premise of …
Design of a dds based frequency synthesizer
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WebDec 26, 2011 · Abstract: This paper presents a DDS-based PLL frequency synthesizer design. Using DDS + PLL frequency synthesis, which has high frequency of the DDS resolution and high frequency accuracy, it is easy to implement phase-locked loop process control and other advantages. WebFrequency synthesizers are used in many radio engineering systems in areas of radio location, naviga tion, communication, and measuring techniques. ... The purpose of this work is to design the DDS based on the direct digital synthesis method allowing one to synthesize signals with amplitude, frequency, and phase modulations.
WebDDS technology. 2. DDS Design Principle 2.1. Basic Structure of DDS As early as 1971, American scholars J. Tierney and C. M. Tader and others first proposed the DDS principle from the perspective of phase. DDS was a direct digital synthesizer, which was a new type of frequency synthesis technology, WebNov 5, 2024 · In this design, the PLL generates local oscillation frequencies are 2195 MHz, 2255 MHz, 2315 MHz, and 2375 MHz, respectively. DDS output IF signal from 115 MHz to 135 MHz. The structure diagram is shown in Fig. 6. Physical picture of tunable wideband bandpass filter is shown in Fig. 7.
WebSystem using VHDL language modeling, the design parameters of the DDS, the realization of reconfigurable frequency synthesis. To facilitate the changes necessary parameters in order to achieve a common period, while the use of compiler MAXPALLS platform DDS completed the design of a specific simulation, detailed programming of the DDS-based ... WebJan 1, 2024 · The parallel phase accumulator is designed with parallel and flow technology, and the output frequency of the system is improved. At the same time, using the FPGA technology, the various modules...
WebDesign Tools ADIsimDDS (Direct Digital Synthesis) ADIsimDDS uses mathematical equations to model and illustrate the overall performance of the selected device. ADIsimDDS calculates the required FTW, given the reference clock frequency and desired output frequency.
WebThis paper presents a design plan for the frequency synthesizer base on DDS and PLL of the digital receiver, the main hardware selection is shown. Finally through the system … sign off itWebFigure 1. A basic PLL model. Depending on the application, DDS architecture may present a better alternative to PLL as a frequency synthesizer. A typical DDS-based signal generator is shown in Figure 2. A tuning word is applied to a phase accumulator, which determines the slope of the output ramp. sign offline downloadWebOne such practical realization of a frequency synthesizer is direct digital frequency synthesis (DDFS), often shortened to direct digital synthesis (DDS). The technique uses digital … sign-off meaning in hindi