dds造句
31 This paper introduces a DTMF software synthesizer based on DDS and its implementation and analyzes the effect of phase noise spurious noise and phase truncation error on output wave form.
32 This paper analyzes the performance of DDS hybrid PLL circuit which is now existing, and presents a novel method to design an S band frequency synthesizer using a new scheme of DDS hybrid PLL circuit.
33 Aim at the design of six lines triphase signal source based on DDS technology, the design methods of hardware and software were given out.
34 Besides that,[www.] you could be the winner of 32 inches Full HD TV for FREE by becoming our 300th DDS user in Malaysia.
35 This paper gives a detailed analysis of phase error caused by phase jitter in a direct digital frequency synthesizer (DDS).
36 A four-year college program in dentistry usually leads to the Doctor of Dental Surgery (DDS) or Doctor of Dental Medicine (DMD) degree.
37 The raw materials and technologies for iatric fiber were reviewed, as was the application of iatric fiber in novel drug delivery system(DDS).
38 A signal source in sonar receiver′s testing is designed, its working principle is based on DDS technology and log DAC.
39 Smokers get periodontal disease at two to three times the rate of nonsmokers, " says Sally Cram, DDS, a periodontist in Washington, D.C., and a consumer advisor for the American Dental Association.
40 Clear AFM images were ( obtained ) from PbZr _ ( 0.90 ) Ti _ ( 0.10 ) O _ 3 - Fe _ ( 0.003 ) nano powder sample prepared by DDS method.
41 This design dispenses with ROM which mainly limits the converting speed of DDS, but uses SIN function polynomial approximation directly generating digital SIN wave.
42 As we know, spurious noise of a DDS resulted from phase truncation degrades its spectral characteristics.
43 The DDS were divided into prodrug and chemical delivery system, macromolecular carrier system, microparticulate carrier system, implantable polymer system and infusion pump.
44 In this paper a method of designing and implementing Field Programmable Gate Array (FPGA) digital modulator based on the improved Direct Digital Synthesizer (DDS) technology is presented.
45 The L-Band Frequency Source applies DDS driving PLL circuit structure, which makes DDS and PLL complementary to each other, reaching the better technical index.
46 In the ultra high frequency system, the frequency compounder section of the transmitting frequency is operated with DDS/PLL technology.
47 A one-step process of synthesis of high-effective catalytic promotor DDS from diphenyldichlorosilane and methyl alcohol was put forward.
48 This system consists of DDS signal generator module, MCU control module, keyboard input module and nixie tube display module.
49 In view of universality, function generator with the core of high speed MCU uses the chips of DDS and FPGA. On the basis of generating routine sine wave, it can modulate signal frequency and range.
50 DDS - 1 type m ulti - function electronic laboratory case can meet this requirement.
51 In these cases, an external device such as a SCSI DDS tape drive will often suffice.
52 Deposit - dip - spin ( DDS ) coating method, a composite nano - powder sample preparation method for atomic force microscope ( AFM ) measurement is introduced.
53 MMW high resolution radar range profile two-step stretch processing method direct digital synthesis (DDS).
54 Applications of digital system design about LPM database 、 divider and DDS frequency synthesizer in the MAX + PLUSare introduced.
55 Impulse test. This procedure for the AD 9850 ( DDS ) Direct Digital Frequency Synthesizer C language source code.
56 SAR point target echo simulator which based on DDS chirp signal generator is introduced; it is composed of ARM controller unit and LFM signal generator unit.
57 The hardware configuration of using DDS chip AD 9956 to realize the linear modulation function is introduced.
58 Considering the effect of spurious noise and improving the quality of DDS output, the approach to compress the capacity of ROM and optimize the module design of phase accumulator.
59 Compared to the theory signal, the chirp produced by DDS under large bandwidth, may have frequency distortion due to the limited chirp-rate.
60 A . The AD 5932 DDS is a simple, programmable, digitally controlled wave form generator.
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