Nonlinear modeling and analysis of a Doherty power amplifier driven by non-constant envelope signals

被引：7

作者：

Golestaneh, H. ^{[1
]}

Abdipour, A. ^{[1
]}

Mohammadi, A. ^{[1
]}

机构：

[1] Amirkabir Univ Technol, Dept Elect Engn, Tehran 15914, Iran

来源：

ANALOG INTEGRATED CIRCUITS AND SIGNAL PROCESSING | 2012年 / 72卷 / 01期

关键词：

Nonlinear analysis; Circuit envelope method; Doherty power amplifier; Non-constant envelope signals; RF LDMOS transistors; HIGH-EFFICIENCY; DESIGN;

D O I：

10.1007/s10470-012-9846-3

中图分类号：

TP3 [计算技术、计算机技术];

学科分类号：

0812 ;

摘要：

A circuit-level CAD method based on circuit envelope (CE) simulation is presented to analyze the nonlinear behavior of Doherty power amplifiers (DPAs) in LDMOS technology, when driven by non-constant envelope signals. In this paper, a general nonlinear model has been extracted for an RF LDMOS power transistor. Then, a complete CE analysis is applied to a designed DPA using the extracted model at 3.5 GHz. To solve the CE equation at specific envelope samples, analytic expressions are developed for the Jacobian matrix and an effective method for quick calculation is suggested. Employing this nonlinear analysis gives insight for optimum design of DPAs and provides an accurate tool to precisely model the nonlinearity of the amplifier in order to predict its distortion effects in modern communication systems.

引用

页码：141 / 153

页数：13

共 23 条

[1]

Aaen P.H., 2007, MODELING CHARACTERIZ

[2]

[Anonymous], FREESC SEM MET LDMOS

[3]

[Anonymous], 2006, RF power amplifiers for wireless communications

[4]

[Anonymous], HIGH FREQUENCY ELECT

[5] Nonlinear RF circuits and systems simulation when driven by several modulated signals [J].

Carvalho, NB ;

Pedro, JC ;

Jang, WH ;

Steer, MB .

IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES, 2006, 54 (02) :572-579

[6]

CURTICE WR, 1999, IEEE MTT S INT MICR

[7] A NEW METHOD FOR DETERMINING THE FET SMALL-SIGNAL EQUIVALENT-CIRCUIT [J].

DAMBRINE, G ;

CAPPY, A ;

HELIODORE, F ;

PLAYEZ, E .

IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES, 1988, 36 (07) :1151-1159

[8] A new high efficiency power amplifier for modulated waves [J].

Doherty, WH .

PROCEEDINGS OF THE INSTITUTE OF RADIO ENGINEERS, 1936, 24 (09) :1163-1182

[9] Nonlinear analysis, design, and implementation of a VCO in S frequency band [J].

Ghanian, Z. ;

Abdipour, A. ;

Ghorbani, A. .

ANALOG INTEGRATED CIRCUITS AND SIGNAL PROCESSING, 2006, 49 (02) :213-223

[10] NONLINEAR CIRCUIT ANALYSIS USING THE METHOD OF HARMONIC-BALANCE - A REVIEW OF THE ART .1. INTRODUCTORY CONCEPTS [J].

GILMORE, RJ ;

STEER, MB .

INTERNATIONAL JOURNAL OF MICROWAVE AND MILLIMETER-WAVE COMPUTER-AIDED ENGINEERING, 1991, 1 (01) :22-37

← 1 2 3 →