✦ LIBER ✦

The AB-C Doherty power amplifier. Part I: Theory

✍ Scribed by Paolo Colantonio; Franco Giannini; Rocco Giofrè; Luca Piazzon

Publisher: John Wiley and Sons
Year: 2009
Tongue: English
Weight: 379 KB
Volume: 19
Category: Article
ISSN: 1096-4290
DOI: 10.1002/mmce.20350

No coin nor oath required. For personal study only.

✦ Synopsis

In this article, the complete theoretical analysis of a Doherty amplifier employing a Class AB bias condition for the Main and a Class C one for the Auxiliary devices, respectively, is presented. Starting from the simplified model of an active device, the analysis of the AB-C Doherty behavior is carried out as a function of the input signal. In particular, the proposed approach is based on the analysis of the output drain current waveforms generated by the two active devices, while assuming a Tuned Load configuration (i.e., short circuit condition) for higher harmonic terminations. A closed form formulation is derived in order to directly design an AB-C Doherty amplifier, while fully understanding the basis of its physical behavior. Finally, which Doherty parameters can be chosen by the designer or have to be implicitly fixed are discussed and clarified. V

📜 SIMILAR VOLUMES

The AB-C Doherty power amplifier. Part I

The AB-C Doherty power amplifier. Part II: Validation

✍ Paolo Colantonio; Franco Giannini; Rocco Giofrè; Luca Piazzon 📂 Article 📅 2009 🏛 John Wiley and Sons 🌐 English ⚖ 473 KB

In part I, the complete theoretical (and nonlinear) analysis of a Doherty amplifier employing a Class AB bias condition for the Main Amplifier and a Class C one for the Auxiliary device has been presented. In this article, the experimental validation of the proposed theory is presented, describing t

Ab initio chemical kinetics for the NH2

Ab initio chemical kinetics for the NH2 + HNOx Reactions, Part I: Kinetics and Mechanism for NH2 + HNO

✍ Shucheng Xu; M. C. Lin 📂 Article 📅 2009 🏛 John Wiley and Sons 🌐 English ⚖ 435 KB 👁 1 views

## Abstract The kinetics and mechanism for the reaction of NH~2~ with HNO have been investigated by ab initio calculations with rate constant prediction. The potential energy surface of this reaction has been computed by single‐point calculations at the CCSD(T)/6‐311+G(3__df__, 2__p__) level based

A WAVENUMBER APPROACH TO MODELLING THE R

A WAVENUMBER APPROACH TO MODELLING THE RESPONSE OF A RANDOMLY EXCITED PANEL, PART I: GENERAL THEORY

✍ C. MAURY; P. GARDONIO; S.J. ELLIOTT 📂 Article 📅 2002 🏛 Elsevier Science 🌐 English ⚖ 360 KB

Part I of this paper presents a self-contained analytical framework for determining the vibro-acoustic response of a plate to a large class of random excitations. The wavenumber approach is used, which provides an insight into the physical properties of the panel response and enables us to evaluate

SEMI-ANALYTICAL APPROACH TO THE NON-LINE

SEMI-ANALYTICAL APPROACH TO THE NON-LINEAR DYNAMIC RESPONSE PROBLEM OF S–S AND C–C BEAMS AT LARGE VIBRATION AMPLITUDES PART I: GENERAL THEORY AND APPLICATION TO THE SINGLE MODE APPROACH TO FREE AND FORCED VIBRATION ANALYSIS

✍ L. Azrar; R Benamar; R.G. White 📂 Article 📅 1999 🏛 Elsevier Science 🌐 English ⚖ 195 KB

In a previous series of papers [1][2][3], a general model based on Hamilton's

Mercury concentrations in landlocked Arc

Mercury concentrations in landlocked Arctic char (Salvelinus alpinus) from the Canadian Arctic. Part I: Insights from trophic relationships in 18 lakes

✍ Nikolaus Gantner; Michael Power; Deborah Iqaluk; Markus Meili; Hans Borg; Marcus 📂 Article 📅 2010 🏛 John Wiley and Sons 🌐 English ⚖ 208 KB

## Abstract Concentrations of mercury (Hg) have increased slowly in landlocked Arctic char over a 10‐ to 15‐year period in the Arctic. Fluxes of Hg to sediments also show increases in most Arctic lakes. Correlation of Hg with trophic level (TL) was used to investigate and compare biomagnification o