Class-E amplifier design improvements for GSM frequencies

Z. Nadir*, F. Touati

*المؤلف المقابل لهذا العمل

نتاج البحث: المساهمة في مجلةمراجعة النظراء

1 اقتباس (Scopus)

ملخص

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 efficiency of the power amplifier (which is beneficial for multiple applications in communcation sector) can be improved by increasing the efficiency of switching mode class E power amplifiers for frequencies of 900 MHz and 1800 MHz. The paper tackles modeling, design improvements and verification through simulation for higher efficiencies. This is the continuation of previous work by the authors. These nonlinear power amplifiers can only amplify constant-envelope RF signals without introducing significant distortion. Mobile systems such as Advanced Mobile Phone System (AMPS) and Global System for Mobile communications (GSM) use modulation schemes which generate constant amplitude RF outputs in order to use efficient but nonlinear power amplifiers. Improvements in designs are suggested and higher efficiencies are achieved, to the tune of 67.1% (for 900 MHz) and 67.0% (1800 MHz).

اللغة الأصليةEnglish
الصفحات (من إلى)74-82
عدد الصفحات9
دوريةJournal of Engineering Research
مستوى الصوت8
رقم الإصدار1
المعرِّفات الرقمية للأشياء
حالة النشرPublished - 2011

ASJC Scopus subject areas

  • ???subjectarea.asjc.2200???

بصمة

أدرس بدقة موضوعات البحث “Class-E amplifier design improvements for GSM frequencies'. فهما يشكلان معًا بصمة فريدة.

قم بذكر هذا