The solitary electromagnetic wave (SEMW) physics theory and
the lossy line (LL) technologies in this book have possibility to start a
revolution to the industry and academia of digital technologies. At design and
analysis of the digital circuit included in the switching mode circuit (SMC), the
AC circuit engineering theory that is based on the static electromagnetic
physics has been used in current. However, the switching device such as the
complemental metal-oxide-semiconductor (CMOS) circuit in the digital circuit is
acting quite high speed and in non-periodic and its never static act. Therefore,
the accurate design and motion analysis of the digital circuit is impossible by
the current method. For such reason, current method of design and analysis of
the digital circuit is not accepted by the scientific academia. However, it turns out that this
cause is in the scientific field ironically and the theory about the
non-periodic electromagnetic wave is not existed in the physics, which
engineering should refer to. The digital circuit engineers are facing many
types of the difficult problems whenever the
development of the equipment and the systems. Among them, EMI including SI
(signal integrity) and timing control of the signals are the highly troublesome
problems of the digital circuit typically as shown in the first half in detail.
SEMW physics theory and LL technologies will solve these problems and will provide
easy and highly accurate design and analysis methods. Development process of
SEMW physics theory and LL technologies, overview of them, and there few
application examples to SMC including the digital circuit and switching mode
power supply circuit (SMPC) are presented. The digital circuit consists of
switching device and transmission line of power and signal, and SEMW is
generated by the switching device. Therefore, the current of the N-channel metal-oxide-semiconductor
(N-channel MOS) transistor of CMOS circuit was analyzed in accordance with
semiconductor physics. Applying non-linear wave physics and electromagnetic
physics to this result, SEMW theory was developed
and presented as the hypotheses in electromagnetic physics. When SEMW physics theory
is recognized in worldwide, the degree of perfection of the conventional
electromagnetic physics will be even higher. According to the SEMW theory, it
is estimated that the transmission loss is effective to solve many of above difficult
problems facing digital circuit engineers and improve the acting stability of
SMC containing the digital circuit. The validation result of the excellent
effect of transmission loss at the digital circuit by experiment and calculation
are presented. LL technologies will also useful to the circuit on a chip (SoC).
It has been believed in the long term that on-chip interconnects must be used
the low resistive material based on the AC circuit engineering theory. But according
to the SEMW physics theory, it estimates that rather the
low conductivity material is suitable for the on-chip interconnects.
Therefore, the improvement effect of signal voltage-form
and the magnitude of SEMW when any kinds of the low conductivity material are
used to the on-chip interconnects was analyzed by the calculation in accordance
with the SEMW theory and its result is shown. At last, the design example of
the quasi-stationary state closed circuit (QSCC) of the switching power supply
circuit by applying the lossy lines and the result of the waveform analysis are
shown. I hope you confirm by this example that the signal waveform is improved and
the magnitude of SEMW which concerns EMI is reduced.
Author(s) Details:
Hirokazu Tohya,
PhD,
CEO President ICAST, Inc.
Please see the link here: https://stm.bookpi.org/SEWTLLTSMC/article/view/11933
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