CMOS Linear High Performance Push Amplifier for WiMAX Power Amplifier

Author

Tabrizi, Mohammad Moghaddam ; Masoumi, Nasser

Author_Institution

Sch. of Electron. & Comput., Univ. of Tehran, Tehran, Iran

fYear

2011

fDate

23-25 Sept. 2011

Firstpage

1

Lastpage

4

Abstract

In this work a novel and efficient approach is used to optimize linearity and efficiency of power amplifier used in mobile WiMAX application. A linear and high performance push amplifier is designed and implemented in 0.18 μm CMOS technology to enhance linearity of class E switched mode power amplifier. Proposed push amplifier has two section; analog and switching section. Analog section provides required linearity and switching section guarantees satisfying total efficiency level. Each block is designed to meet required specifications. The core power amplifier which is a class E switched mode power amplifier is also designed to have maximum possible efficiency. The implemented circuit is simulated using HSPICERF with TSMC RF models for active and passive elements. The proposed power amplifier provides a maximum output power of 25 dBm and power added efficiency (PAE) as high as 48% at 2.5 GHz operation frequency. At 1-dB compression point this PA exhibits 23 dBm of output power with 46% PAE.

Keywords

CMOS analogue integrated circuits; UHF integrated circuits; UHF power amplifiers; WiMax; mobile radio; CMOS linear high performance push amplifier; HSPICERF simulation; TSMC RF model; WiMAX power amplifier; class E switched mode power amplifier; efficiency 46 percent; frequency 2.5 GHz; gain 1 dB; mobile WiMAX application; power added efficiency; size 0.18 mum; Linearity; Power amplifiers; Power generation; Radio frequency; Switches; Transistors; WiMAX;

fLanguage

English

Publisher

ieee

Conference_Titel

Wireless Communications, Networking and Mobile Computing (WiCOM), 2011 7th International Conference on

Conference_Location

Wuhan

ISSN

2161-9646

Print_ISBN

978-1-4244-6250-6

Type

conf

DOI

10.1109/wicom.2011.6036654

Filename

6036654