„… spread spectrum modulation [20–23]. a. Parameter Control This method refers to making the system chaotic …” „… . b. Spread Spectrum Modulation Basically, spread spectrum modulation is realized by attaching an …” „… amplitude is reduced. Spread spectrum modulation is depicted by modulation mode and modulation signal …”

„… applied in switching converters in two ways: parameter control and spread spectrum modulation. The …” „… of the EMI spectrum. My research, focusing on chaotic duty modulation, has proposed the spread …” „… converter by dispersing the energy into a wide frequency band and smoothing the peaks of the EMI spectrum …”

„… , pages 231–241. Springer, 2014. [39] W. Zhou and S. Qiu. Effect of chaotic spectrum-spread on output …” „… . [25] K. Tse, H. Chung, S. Hui, and H. So. Analysis and spectral characteristics of a spread-spectrum …” „… . Zhang. Quantification description of the chaotic PWM spectrum of the switching converter. Acta Physica …”

„… 5 Realizing Chaotic Duty Modulation 5.1 Introduction Spread spectrum modulation is categorized as …” „… , FMFD is the most effective spread spectrum [25], which is the most common mode used to spread the …” „… modulation was analyzed on spread spectrum used for suppressing EMI, and the implementation circuit for DC-DC …”

„… the spectrum can be spread through chaotic modulation due to the pseudo-randomness and the continuous …” „… spectrum characteristics of chaos. Some researches [20, 22, 33] have probed that the effectiveness of EMI …” „… signal is not smooth, which makes itself a non-ideal wide spectrum signal [41]. In order to analyze …”

„… ) has the continuous spectrum. That is, the signal energy of v(t) is spread into a wide frequency range …” „… wide frequency band due to the pseudo-randomness and the continuous spectrum characteristics of chaos …” „… implement chaotic modulation. The spectrum under chaotic modulation is obtained on the basis of Fourier …”

„… . As one kind of spread spectrum modulation, the chaotic duty modulation is adopted to suppress …” „… fluctuant and continuous spectrum waveform due to the pseudo-randomness of chaos. The frequency …” „… pseudo-randomness and continuous spectrum of chaos, chaotic modulation has been widely applied in the security …”

„… and its harmonics, but the spread spectrum is less effective when compared that under chaotic …”

„… , such as the techniques of soft switching, spectrum-spread and optimizing the gate circuitry, became …” „… )Spread-Spectrum As shown in Fig.1.6 [4], spread-spectrum technique was proposed to fight EMI by spreading the …” „… . Spread-spectrum can be implemented just 6 1.4 Spread-Spectrum Techniques by attaching a modulation circuit for the …”

„… Circuit – Spread Spectrum Due to the unpredictable and random-like features of chaotic signals, chaotic …” „… .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 1.4 Spread-Spectrum Techniques …” „… spread-spectrum technique, which can reduce EMI at the source by spreading the spectra of input and output signals …”

„… Spectrum-Spread on Output Voltage Ripple of Power Converter. Electric Power Automation Equipment, 12:52–55, 2008 …” „… . [19] T. Daimon. Spread-spectrum Clocking in Switching Regulators for EMI Reduction. Ieice Trans …” „… , and D. Pikulins. Examination of different spread spectrum techniques for EMI suppression in dc/dc …”

„… − ). Here, to study the effect of the variation range of Tk on the spread-spectrum performance, , which is …” „… , resulting in a discrete spectrum. Those peaks, becoming continuous, are spread over a wide frequency band …” „… Converters Figure. 3.3: vs RI 3.3 Power Spectrum of Switching Signal with Chaotic Frequency Tk Tk tk Figure …”

„… ) are further spread and become continuous, indicating that the spread-spectrum effect of chaotic …” „… PWM ICs. In terms of the simulations, the CCFM module is effective to spread the spectrum of the …” „… capacitor’s voltage are given by Fig.2.14, where the spectrum with fixed frequency is drawn in red and …”

„… voltage is measured to observe the spread-spectrum effectiveness of the CCFMmodule. Hence, as shown in Fig …” „… peaks on the spectrum with fixed frequency are spread under chaotic modulation, and the EMI suppression …” „… existing under the traditional PWM control are spread by chaotic modulation. 4.3.3 Electrical …”

„… PWM scheme becomes continuous and can be spread over a wide frequency range. Although CCFM has been …” „… estimated and improved basing on the power spectrum analysis. (3) The electrical characteristics test …”

„… wide frequency range obviously by CCFM. Moreover, the better effect of spread-spectrum can be obtained …” „… voltage are shown in Fig.5.6. The harmonics peaks under the traditional PWM control are spread within a …” „… control are spread by the application of the chaotic frequency PWM IC, and EMI reduction becomes larger …”

„… curve and then calculate with compensation sine functions the spectrum of circumferential ripples [6 …” „… step by step from measured curves over the rotation angle and combined into a spectrum, as can be seen …” „… are visible. In addition to the expected 69th order within profile and helix, the spectrum evaluation …”

„… lubrication, low material stiffness results in large contact radii such that external load can spread over a …” „… account for the damping behavior at every roll over, the relaxation spectrum has to be extended, e.g. by …”

„… achieved by adjusting the rotational speed of the impellers, and the position of the spreader plates of …” „… the Opti-Spread Plus system, shown in the below Fig. 3. Fig. 3: Left: residue flow through a New …” „… Holland CR combine harvester [3]; Right: spreader impellers and plates of New Holland Opti-Spread Plus …”

„… Spread Spectrum (DSSS) und das Frequency Hopping Spread Spectrum (FHSS) erlangt. Bei FHSS wechseln Sender …” „… für militärische Zwecke ent-wickelte Spreiztechnik Spread Spektrum (SS) eingesetzt (Bild 4). Innerhalb …”