Search International and National Patent Collections

1. (WO2015042643) A MULTI-STAGE CMOS AMPLIFIER CIRCUIT

Pub. No.:    WO/2015/042643    International Application No.:    PCT/AU2014/000936
Publication Date: Fri Apr 03 01:59:59 CEST 2015 International Filing Date: Fri Sep 26 01:59:59 CEST 2014
IPC: H03F 3/213
Applicants: THE UNIVERSITY OF MELBOURNE
Inventors: SKAFIDAS, Efstratios
DUONG, Hoa Thai
EVANS, Robin J
LE, Viet Hoang
HUYNH, Anh
Title: A MULTI-STAGE CMOS AMPLIFIER CIRCUIT
Abstract:
A multi-stage CMOS power amplifier circuit comprises a plurality of amplifier stages (120,430,440,450,460) connected by respective ones of a plurality of transformers (T2-T5), wherein each transformer (T2-T5) comprises a first winding in a first metal layer of a CMOS chip and a second winding arranged in a second metal layer of the CMOS chip superimposed on the first winding, wherein the first and second windings of each transformer have a width (W) and a radius (R), and impedance matching between the amplifier stages is provided by the width (W) and the radius (R) of the respective transformers (T2-T5).