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78  Articles
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Due to the advantages of zero-voltage-switching (ZVS) and zero-current-switching (ZCS), LCLC resonant converters are universally applied in two-stage electronic power conditioners (EPCs) of space travelling-wave tube amplifiers (TWTAs). In two-stage EPCs,... see more

Modern mobile communication signals require power amplifiers able to maintain very high efficiency in a wide range of output power levels, which is a major issue for classical power amplifier architectures. Following the load-modulation approach, efficien... see more

Electrolarynx is an assistive technology commonly used by speech impaired people to speak. The speech impaired people who have lost their larynx (laryngectomee) or have damaged larynx use an electrolarynx device to be able to speak again. The use of the e... see more

One of the best-known cyber attacks, distributed denial of service (DDoS), is evolving. It has become much more malefic and effective with the use of amplification power of reflected messages. This attack is known as the distributed reflected denial of se... see more

The use of English intensifiers keeps changing and flowing. It also varies according to the speaker’s background and style. Quirk, et.al (1992) divides intensifiers into emphasizers, amplifiers (maximizers, boosters), and downtoners (approximators, comp... see more

Here we propose a bidirectional wavelength division multiplexing (WDM) access architecture employing cascaded cyclic arrayed waveguide gratings (AWGs) and reflective semiconductor optical amplifiers (RSOAs) for system applications mainly in wavelength rou... see more

ln this research, a simulation and an implementation of using instrumentation amplifiers and voltage-to-current converter for process control has been conducted. The process variable being measured is the differential pressure that is sensed by a silicon ... see more

This paper gives a brief description of linear modulation schemes and how they are more efficient for data communication. Different classes of RF power amplifiers with respect to their efficiencies are also discussed, as well as different linearisation te... see more

 Efficient power amplifiers are essential in portable battery-operated systems such as mobile phones. Also, the power amplifier (PA) is the most power-consuming building block in the transmitter of a portable system. This paper investigates how the e... see more

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