direct digital frequency synthesizer
Direct Digital Frequency Synthesizer Based On CORDIC Algorithm
... ABSTRACT: Direct Digital frequency synthesizer (DDFS) is a signal generation method and an essential part for local oscillators, mixers and ...The frequency of the waveforms can be ...
7
Design and Simulation of a Modified 32-bit ROM-based Direct Digital Frequency Synthesizer on FPGA
... by digital operations is Direct Digital Frequency Synthesizer (DDFS) that is mostly concerned with sinusoidal ...Hz frequency resolution, including fast hopping, remote ...
7
12-Bit High Speed Direct Digital Frequency Synthesizer Based on Pipelining Phase Accumulator Design
... Direct digital frequency synthesizer (DDFS) or direct digital synthesizer (DDS) is a technique to generate frequency output signal referenced to a ...
6
Efficient FPGA Implementation of Direct Digital Frequency Synthesizer for Software Radios
... implement Direct Digital Frequency Synthesizer (DDFS) with high speed and spectral purity for wireless applications like Software Defined Radio ...estimated frequency of ...
5
Design and Implementation of Software Defined Radio
... Quadrature Direct Digital Frequency Synthesizer ...to Digital converter (ADC), Digital to Analog converter (DAC), Filters and processing ...Orthogonal Frequency Division ...
6
Analysis, Modeling and Simulation of a Low Phase Noise Frequency Synthesizer for High Sensitivity FM Receiver
... of direct digital frequency synthesizer Indirect synthesizers operate by “locking” the output of a frequency source usually a VCO to that of another “cleaner” source known as the ...
11
6. Frequency synthesizer based on CPLD
... the direct frequency synthesis technology, is the use of multiple crystal oscillator, through the frequency, frequency, mixing to obtain a series of combined frequency signal ...
5
TEST BENCH FOR DYNAMIC RANGE TESTING OF ADC
... A complete Built-In Self Test procedure that utilizes the SoC inbuilt resources is a good alternative to reduce test costs when compared to external mixed-signal testers. Section 2 deals with the proposed BIST technique. ...
9
High Speed Direct Signal Frequency Synthesizer
... a direct digital frequency synthesizer (DDFS), a divide-by-N counter, and a pattern generator, produces a TIMING signal conveying a timed sequence of ...a frequency controlled by the ...
5
Direct Digital Synthesizer
... Once the phase has been determined it is necessary to convert this into a digital representation of the waveform. This is accomplished using a waveform map. This is a memory which stores a number corresponding to ...
7
Modelling the Output Spectrum of a Direct Digital Synthesizer exploiting a Digital to Time Converter
... (Direct Digital Synthesizer) is a highly configurable system that is capable of outputting square waves with a large range of different ...the digital nature of the input of the DTC and the ...
7
FFT Spectrum Analyzer using Goertzel Filter
... to digital converter as input ...in digital mixer where frequency shifting of the input signal spectrum is done using direct digital synthesizer (DDS ...using digital to ...
5
Waveform Generation using Direct Digital Synthesis (DDS) Technique
... The Direct Digital synthesizer basically has a system clock signal generator, which is cascaded with a waveform mapper and an ...generates digital data according to the phase and ...
5
Measurement of soil electrical conductivity based on direct digital synthesizer (DDS) and digital oscilloscope
... on direct digital synthesizer (DDS) and digital oscilloscope was ...A digital oscilloscope was used to record and store the two soil output signals with noises in microseconds, which ...
7
A Frequency Agility Synthesizer with Low Phase Noise for Fully Electronic Millimeter Wave Imaging
... Ka-band frequency agility synthesizer with low phase noise and high frequency stability is presented in this paper, which serves as the emission source of transmitter and the local oscillator (LO) of ...
14
Design, Fabrication and Analysis of a 1.1 ghz Phase-Locked Loop Frequency Synthesizer for Wireless Communication Systems
... have direct impact on the tuning sensitivity and ...has direct impact on the resulting PN of the oscillator ...operating frequency of the VCO is up to ...GHz), Digital Storage Oscilloscope ...
5
Switchable PLL Frequency Synthesizer andHot Carrier Effects
... input frequency is close to reference frequency (80 MHz) the control vol- tage of the local oscillator can be adjusted to change the reference frequency higher or ...input frequency and the ...
8
10 15 Frequency Stability Microwave Synthesizer for Atomic Fountain Frequency Standard
... microwave frequency synthesizer for atomic fountain frequency ...this synthesizer, a voltage-controlled DRO is locked to 100MHz hydrogen maser signal through a divider ...interrogation ...
5
Design and Simulation of 2.4GHz CMOS Frequency Synthesizer with Programmable Frequency Divider
... The voltage controlled oscillator (VCO) is an important building block of a synthesizer which generates signals. Both ring oscillators and LC oscillators are used in GHz range applications. But ring oscillators ...
7
A 802.11a Pulse-Swallow Integer-n Frequency Synthesizer
... integer-N frequency synthesizer, a more complicated modulator is needed to alleviate the influence of noise for fractional-N ...Since frequency resolution is not the main factor among designing ...
11