A high-power cartesian feedback transmitter including a compact inverted doherty amplifier

Hanjin Cho; Min Su Kim; Jong Hyuk Jeong; Juho Van; Sung Chan Jung; Hyunchul Park; Kyung Hoon Lim; Sung Wook Kwon; Jae Young Kim; Sung Chan Song; Cheon Seok Park; Youngoo Yang

doi:10.1002/mop.23265

A high-power cartesian feedback transmitter including a compact inverted doherty amplifier

Hanjin Cho
, Min Su Kim
, Jong Hyuk Jeong
, Juho Van
, Sung Chan Jung
, Hyunchul Park
, Kyung Hoon Lim
, Sung Wook Kwon
, Jae Young Kim
, Sung Chan Song
, Cheon Seok Park
, Youngoo Yang

Department of Electronic and Electrical Engineering

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

Abstract

A high-power Cartesian feedback transmitter including a compact inverted Doherty amplifier is presented. The system efficiency was further improved using a bias line adjustment method for the compact inverted Doherty amplifier. After the bias line adjustment from a λ/4 line for the Doherty amplifier, a power-added efficiency (PAE) of 6.9% points was improved from 41.3 to 48.2% at an output power level of 45 dBm. The whole Cartesian feedback transmitter system exhibited an efficiency of 40% and an adjacent channel leakage ratio of - 51 dBc at an output power of 45 dBm for 859 MHz band π/4-DQPSK applications.

Original language	English
Pages (from-to)	944-946
Number of pages	3
Journal	Microwave and Optical Technology Letters
Volume	50
Issue number	4
DOIs	https://doi.org/10.1002/mop.23265
State	Published - Apr 2008

Keywords

π/4-DQPSK
Cartesian feedback transmitter
Inverted doherty amplifier

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10.1002/mop.23265

Cite this

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title = "A high-power cartesian feedback transmitter including a compact inverted doherty amplifier",

abstract = "A high-power Cartesian feedback transmitter including a compact inverted Doherty amplifier is presented. The system efficiency was further improved using a bias line adjustment method for the compact inverted Doherty amplifier. After the bias line adjustment from a λ/4 line for the Doherty amplifier, a power-added efficiency (PAE) of 6.9\% points was improved from 41.3 to 48.2\% at an output power level of 45 dBm. The whole Cartesian feedback transmitter system exhibited an efficiency of 40\% and an adjacent channel leakage ratio of - 51 dBc at an output power of 45 dBm for 859 MHz band π/4-DQPSK applications.",

keywords = "π/4-DQPSK, Cartesian feedback transmitter, Inverted doherty amplifier",

author = "Hanjin Cho and Kim, \{Min Su\} and Jeong, \{Jong Hyuk\} and Juho Van and Jung, \{Sung Chan\} and Hyunchul Park and Lim, \{Kyung Hoon\} and Kwon, \{Sung Wook\} and Kim, \{Jae Young\} and Song, \{Sung Chan\} and Park, \{Cheon Seok\} and Youngoo Yang",

year = "2008",

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doi = "10.1002/mop.23265",

language = "English",

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T1 - A high-power cartesian feedback transmitter including a compact inverted doherty amplifier

AU - Cho, Hanjin

AU - Kim, Min Su

AU - Jeong, Jong Hyuk

AU - Van, Juho

AU - Jung, Sung Chan

AU - Park, Hyunchul

AU - Lim, Kyung Hoon

AU - Kwon, Sung Wook

AU - Kim, Jae Young

AU - Song, Sung Chan

AU - Park, Cheon Seok

AU - Yang, Youngoo

PY - 2008/4

Y1 - 2008/4

N2 - A high-power Cartesian feedback transmitter including a compact inverted Doherty amplifier is presented. The system efficiency was further improved using a bias line adjustment method for the compact inverted Doherty amplifier. After the bias line adjustment from a λ/4 line for the Doherty amplifier, a power-added efficiency (PAE) of 6.9% points was improved from 41.3 to 48.2% at an output power level of 45 dBm. The whole Cartesian feedback transmitter system exhibited an efficiency of 40% and an adjacent channel leakage ratio of - 51 dBc at an output power of 45 dBm for 859 MHz band π/4-DQPSK applications.

AB - A high-power Cartesian feedback transmitter including a compact inverted Doherty amplifier is presented. The system efficiency was further improved using a bias line adjustment method for the compact inverted Doherty amplifier. After the bias line adjustment from a λ/4 line for the Doherty amplifier, a power-added efficiency (PAE) of 6.9% points was improved from 41.3 to 48.2% at an output power level of 45 dBm. The whole Cartesian feedback transmitter system exhibited an efficiency of 40% and an adjacent channel leakage ratio of - 51 dBc at an output power of 45 dBm for 859 MHz band π/4-DQPSK applications.

KW - π/4-DQPSK

KW - Cartesian feedback transmitter

KW - Inverted doherty amplifier

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U2 - 10.1002/mop.23265

DO - 10.1002/mop.23265

M3 - Article

AN - SCOPUS:41849088834

SN - 0895-2477

VL - 50

SP - 944

EP - 946

JO - Microwave and Optical Technology Letters

JF - Microwave and Optical Technology Letters

IS - 4

ER -

A high-power cartesian feedback transmitter including a compact inverted doherty amplifier

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Keywords

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