Process, Voltage and Temperature Compensation Technique for Cascode Modulated PAs

Daniel Sira, Torben Larsen

Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

4 Citationer (Scopus)

Resumé

This paper presents a process, voltage and temperature (PVT) compensation method for a cascode modulated polar power amplifier (PA). It is shown that it is possible to create a baseband replica circuit of the PA that has the same AM-AM nonlinearity as the PA itself. The replica circuit, that represents a transistor level model (empirical model) of the cascode modulated PA, is utilized in a PA analog predistorter. The analog predistorter linearizes and compensates for PVT variation of the cascode modulated PA. The empirical model is placed in the negative feedback of an operational transconductance amplifier. The predistorted varying envelope signal is applied to the cascode gate of the PA. It is shown that the proposed PVT compensation technique significantly reduces the PVT spread of the PA linearity indicators and improves the PA linearity. Simulations were performed in a 0.13 μm CMOS process.
OriginalsprogEngelsk
TidsskriftI E E E Transactions on Circuits and Systems Part 1: Regular Papers
Vol/bind60
Udgave nummer9
Sider (fra-til)2511-2520
Antal sider10
ISSN1549-8328
DOI
StatusUdgivet - sep. 2013

Fingerprint

Power amplifiers
Electric potential
Temperature
Compensation and Redress
Networks (circuits)
Operational amplifiers
Transistors
Feedback

Citer dette

@article{8a14378a6346497cb29d573ab81e76a1,
title = "Process, Voltage and Temperature Compensation Technique for Cascode Modulated PAs",
abstract = "This paper presents a process, voltage and temperature (PVT) compensation method for a cascode modulated polar power amplifier (PA). It is shown that it is possible to create a baseband replica circuit of the PA that has the same AM-AM nonlinearity as the PA itself. The replica circuit, that represents a transistor level model (empirical model) of the cascode modulated PA, is utilized in a PA analog predistorter. The analog predistorter linearizes and compensates for PVT variation of the cascode modulated PA. The empirical model is placed in the negative feedback of an operational transconductance amplifier. The predistorted varying envelope signal is applied to the cascode gate of the PA. It is shown that the proposed PVT compensation technique significantly reduces the PVT spread of the PA linearity indicators and improves the PA linearity. Simulations were performed in a 0.13 μm CMOS process.",
author = "Daniel Sira and Torben Larsen",
year = "2013",
month = "9",
doi = "10.1109/TCSI.2012.2215802",
language = "English",
volume = "60",
pages = "2511--2520",
journal = "I E E E Transactions on Circuits and Systems Part 1: Regular Papers",
issn = "1549-8328",
publisher = "IEEE",
number = "9",

}

Process, Voltage and Temperature Compensation Technique for Cascode Modulated PAs. / Sira, Daniel; Larsen, Torben.

I: I E E E Transactions on Circuits and Systems Part 1: Regular Papers, Bind 60, Nr. 9, 09.2013, s. 2511-2520.

Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

TY - JOUR

T1 - Process, Voltage and Temperature Compensation Technique for Cascode Modulated PAs

AU - Sira, Daniel

AU - Larsen, Torben

PY - 2013/9

Y1 - 2013/9

N2 - This paper presents a process, voltage and temperature (PVT) compensation method for a cascode modulated polar power amplifier (PA). It is shown that it is possible to create a baseband replica circuit of the PA that has the same AM-AM nonlinearity as the PA itself. The replica circuit, that represents a transistor level model (empirical model) of the cascode modulated PA, is utilized in a PA analog predistorter. The analog predistorter linearizes and compensates for PVT variation of the cascode modulated PA. The empirical model is placed in the negative feedback of an operational transconductance amplifier. The predistorted varying envelope signal is applied to the cascode gate of the PA. It is shown that the proposed PVT compensation technique significantly reduces the PVT spread of the PA linearity indicators and improves the PA linearity. Simulations were performed in a 0.13 μm CMOS process.

AB - This paper presents a process, voltage and temperature (PVT) compensation method for a cascode modulated polar power amplifier (PA). It is shown that it is possible to create a baseband replica circuit of the PA that has the same AM-AM nonlinearity as the PA itself. The replica circuit, that represents a transistor level model (empirical model) of the cascode modulated PA, is utilized in a PA analog predistorter. The analog predistorter linearizes and compensates for PVT variation of the cascode modulated PA. The empirical model is placed in the negative feedback of an operational transconductance amplifier. The predistorted varying envelope signal is applied to the cascode gate of the PA. It is shown that the proposed PVT compensation technique significantly reduces the PVT spread of the PA linearity indicators and improves the PA linearity. Simulations were performed in a 0.13 μm CMOS process.

U2 - 10.1109/TCSI.2012.2215802

DO - 10.1109/TCSI.2012.2215802

M3 - Journal article

VL - 60

SP - 2511

EP - 2520

JO - I E E E Transactions on Circuits and Systems Part 1: Regular Papers

JF - I E E E Transactions on Circuits and Systems Part 1: Regular Papers

SN - 1549-8328

IS - 9

ER -