Software-based adaptive protection control against load mismatch for a mobile power amplifier module

Jooyoung Jeon; Youngho Jung; Myounggon Kang

doi:10.3390/electronics8111226

Software-based adaptive protection control against load mismatch for a mobile power amplifier module

Jooyoung Jeon, Youngho Jung, Myounggon Kang

School of Advanced Fusion Studies

Research output: Contribution to journal › Article › peer-review

Abstract

A closed-loop protection method for a radio frequency (RF) power amplifier (PA) module applicable to mobile handsets has been introduced. The load impedance of the PA was adaptively sensed by an embedded impedance detector which was digitally controlled and the system adjusted PA power using a feedback circuit to keep the PA safe based on a load mismatch detection. For verification, a two-stage hetero junction bipolar transistor (HBT) PA module for handsets was fabricated and tested against load mismatch. Measurement results showed that the technique could help PA survive at a 0.5V larger collector bias voltage condition than when the technique was not applied for the same mismatch condition with an acceptable RF performance degradation at nominal condition.

Original language	English
Article number	1226
Journal	Electronics (Switzerland)
Volume	8
Issue number	11
DOIs	https://doi.org/10.3390/electronics8111226
State	Published - Nov 2019

Keywords

Closed loop feedback
HBT
Impedance detection
Load mismatch
Mobile industry processor interface (MIPI)
Module
Protection circuit
RF power amplifier
Software

Access to Document

10.3390/electronics8111226

Cite this

@article{b4df1f143e5647bcaf777979ab0e2ce3,

title = "Software-based adaptive protection control against load mismatch for a mobile power amplifier module",

abstract = "A closed-loop protection method for a radio frequency (RF) power amplifier (PA) module applicable to mobile handsets has been introduced. The load impedance of the PA was adaptively sensed by an embedded impedance detector which was digitally controlled and the system adjusted PA power using a feedback circuit to keep the PA safe based on a load mismatch detection. For verification, a two-stage hetero junction bipolar transistor (HBT) PA module for handsets was fabricated and tested against load mismatch. Measurement results showed that the technique could help PA survive at a 0.5V larger collector bias voltage condition than when the technique was not applied for the same mismatch condition with an acceptable RF performance degradation at nominal condition.",

keywords = "Closed loop feedback, HBT, Impedance detection, Load mismatch, Mobile industry processor interface (MIPI), Module, Protection circuit, RF power amplifier, Software",

author = "Jooyoung Jeon and Youngho Jung and Myounggon Kang",

note = "Publisher Copyright: {\textcopyright} 2019 by the authors. Licensee MDPI, Basel, Switzerland.",

year = "2019",

month = nov,

doi = "10.3390/electronics8111226",

language = "English",

volume = "8",

journal = "Electronics (Switzerland)",

issn = "2079-9292",

publisher = "Multidisciplinary Digital Publishing Institute (MDPI)",

number = "11",

}

TY - JOUR

T1 - Software-based adaptive protection control against load mismatch for a mobile power amplifier module

AU - Jeon, Jooyoung

AU - Jung, Youngho

AU - Kang, Myounggon

PY - 2019/11

Y1 - 2019/11

N2 - A closed-loop protection method for a radio frequency (RF) power amplifier (PA) module applicable to mobile handsets has been introduced. The load impedance of the PA was adaptively sensed by an embedded impedance detector which was digitally controlled and the system adjusted PA power using a feedback circuit to keep the PA safe based on a load mismatch detection. For verification, a two-stage hetero junction bipolar transistor (HBT) PA module for handsets was fabricated and tested against load mismatch. Measurement results showed that the technique could help PA survive at a 0.5V larger collector bias voltage condition than when the technique was not applied for the same mismatch condition with an acceptable RF performance degradation at nominal condition.

AB - A closed-loop protection method for a radio frequency (RF) power amplifier (PA) module applicable to mobile handsets has been introduced. The load impedance of the PA was adaptively sensed by an embedded impedance detector which was digitally controlled and the system adjusted PA power using a feedback circuit to keep the PA safe based on a load mismatch detection. For verification, a two-stage hetero junction bipolar transistor (HBT) PA module for handsets was fabricated and tested against load mismatch. Measurement results showed that the technique could help PA survive at a 0.5V larger collector bias voltage condition than when the technique was not applied for the same mismatch condition with an acceptable RF performance degradation at nominal condition.

KW - Closed loop feedback

KW - HBT

KW - Impedance detection

KW - Load mismatch

KW - Mobile industry processor interface (MIPI)

KW - Module

KW - Protection circuit

KW - RF power amplifier

KW - Software

UR - http://www.scopus.com/inward/record.url?scp=85078210429&partnerID=8YFLogxK

U2 - 10.3390/electronics8111226

DO - 10.3390/electronics8111226

M3 - Article

AN - SCOPUS:85078210429

SN - 2079-9292

VL - 8

JO - Electronics (Switzerland)

JF - Electronics (Switzerland)

IS - 11

M1 - 1226

ER -

Software-based adaptive protection control against load mismatch for a mobile power amplifier module

Abstract

Keywords

Access to Document

Other files and links

Fingerprint

Cite this