A high efficiency and linearity P A solution is presented based on hybrid linearisation schemes that employ complementary techniques to overcome the weakness (or constraints) of either method on its own. I n particular, the high linearity of Cartesian loop is combined with the high efficiency of Envelope Elimination and Restoration (EER). The results of a prototype hybrid linearised PA built us...

The rapid scaling in modern CMOS technology has motivated the researchers to design new analog-to-digital converter (ADC) architectures that can properly work in lower supply voltage. An exchanging the data quantization procedure from the amplitude to the time domain, can be a promising alternative well adapt with the technology scaling. This paper is going to review the recent development in t...

this paper classifies green envelopes as green roofs and green walls according to effective factors, which were derived from literature to compare the green envelopes’ thermal and energy performance in a more effective way. for this purpose, an extensive literature review was carried out by searching keywords in databases and studying related journal papers and articles. the research method for...

background: dengue is a global arboviral threat to humans; causing 390 million infections per year. the availability of safe and effective tetravalent dengue vaccine is a global requirement to prevent epidemics, morbidity, and mortality associated with it. methods: five experimental groups (6 mice per group) each of 5-week-old balb/c mice were immunized with vaccine and placebo (empty plasmid) ...

objective(s): production of a recombinant and immunogenic antigen using dengue virus type-3 envelope protein is a key point in dengue vaccine development and diagnostic researches. the goals of this study were providing a recombinant protein from dengue virus type-3 envelope protein and evaluation of its immunogenicity in mice. materials and methods: multiple amino acid sequences of different i...

background and aims. wound dehiscence after lower third molar surgery extends the postoperative treatment period and may cause long-standing pain. the aim of this study was to compare wound dehiscence after removal of wisdom teeth in the most prevalent mandibular impaction (mesioangular class ib) by two different soft tissue flap designs. materials and methods. partially-erupted mandibular thir...

This paper introduces the concept of frequency-translating, bandpass delta-sigma modulator in continuous-time. The system level design and simulation results of the deltasigma modulator are presented. The DAC jitter performance of the continuous-time, frequency translating bandpass delta-sigma modulator is presented. The DAC jitter performance of the frequency translating modulator and conventi...

This paper describes a digital realization of a click modulator for a class-D digital audio power amplifier. The click modulator is an interesting alternative to a classical pulse width modulator. The modulator was realized using a floating point digital signal processor ADSP21065L and FPGA circuit Spartan 3 XC3100E. Some simulation and laboratory test results are presented in this paper. Stres...