Improvement in Performance of Power Amplifiers by Defected Ground Structure

Jong-Sik LIM; Yong-Chae JEONG; Dal AHN; Sangwook NAM

Improvement in Performance of Power Amplifiers by Defected Ground Structure

Jong-Sik LIM, Yong-Chae JEONG, Dal AHN, Sangwook NAM

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This paper describes the performance improvement of power amplifiers by defected ground structure (DGS). Due to the excellent capability of harmonic rejection and tuning, DGS plays a great role in improving the major nonlinear behaviors of power amplifier such as output power, harmonics, power added efficiency (PAE), and the ratio between the carrier and the third order intermodulation distortion (C/IMD3). In order to verify the improvement of performances by DGS, measured data for a power amplifier, which adopts a 30 Watts LDMOS device for the operation at 2.1-2.2 GHz, are illustrated under several operating bias currents for two cases, i.e., with and without DGS attached. The principle of the improvement is described by the simple Volterra nonlinear transfer functions with the consideration of different operating classes. The obtained improvement of the 30 Watts power amplifier, under 400 mA of I_dsQ as an example, includes the reduction in the second and third harmonics by 17 dB and 20 dB, and the increase in output power, PAE, and C/IMD3 by 1.3 Watts, 3.4%, and 4.7 dB, respectively.

Publication: IEICE TRANSACTIONS on Electronics Vol.E87-C No.1 pp.52-59

Publication Date: 2004/01/01

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Type of Manuscript: PAPER

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Jong-Sik LIM, Yong-Chae JEONG, Dal AHN, Sangwook NAM, "Improvement in Performance of Power Amplifiers by Defected Ground Structure" in IEICE TRANSACTIONS on Electronics, vol. E87-C, no. 1, pp. 52-59, January 2004, doi: .
Abstract: This paper describes the performance improvement of power amplifiers by defected ground structure (DGS). Due to the excellent capability of harmonic rejection and tuning, DGS plays a great role in improving the major nonlinear behaviors of power amplifier such as output power, harmonics, power added efficiency (PAE), and the ratio between the carrier and the third order intermodulation distortion (C/IMD3). In order to verify the improvement of performances by DGS, measured data for a power amplifier, which adopts a 30 Watts LDMOS device for the operation at 2.1-2.2 GHz, are illustrated under several operating bias currents for two cases, i.e., with and without DGS attached. The principle of the improvement is described by the simple Volterra nonlinear transfer functions with the consideration of different operating classes. The obtained improvement of the 30 Watts power amplifier, under 400 mA of I_dsQ as an example, includes the reduction in the second and third harmonics by 17 dB and 20 dB, and the increase in output power, PAE, and C/IMD3 by 1.3 Watts, 3.4%, and 4.7 dB, respectively.
URL: https://globals.ieice.org/en_transactions/electronics/10.1587/e87-c_1_52/_p

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@ARTICLE{e87-c_1_52,
author={Jong-Sik LIM, Yong-Chae JEONG, Dal AHN, Sangwook NAM, },
journal={IEICE TRANSACTIONS on Electronics},
title={Improvement in Performance of Power Amplifiers by Defected Ground Structure},
year={2004},
volume={E87-C},
number={1},
pages={52-59},
abstract={This paper describes the performance improvement of power amplifiers by defected ground structure (DGS). Due to the excellent capability of harmonic rejection and tuning, DGS plays a great role in improving the major nonlinear behaviors of power amplifier such as output power, harmonics, power added efficiency (PAE), and the ratio between the carrier and the third order intermodulation distortion (C/IMD3). In order to verify the improvement of performances by DGS, measured data for a power amplifier, which adopts a 30 Watts LDMOS device for the operation at 2.1-2.2 GHz, are illustrated under several operating bias currents for two cases, i.e., with and without DGS attached. The principle of the improvement is described by the simple Volterra nonlinear transfer functions with the consideration of different operating classes. The obtained improvement of the 30 Watts power amplifier, under 400 mA of I_dsQ as an example, includes the reduction in the second and third harmonics by 17 dB and 20 dB, and the increase in output power, PAE, and C/IMD3 by 1.3 Watts, 3.4%, and 4.7 dB, respectively.},
keywords={},
doi={},
ISSN={},
month={January},}

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TY - JOUR
TI - Improvement in Performance of Power Amplifiers by Defected Ground Structure
T2 - IEICE TRANSACTIONS on Electronics
SP - 52
EP - 59
AU - Jong-Sik LIM
AU - Yong-Chae JEONG
AU - Dal AHN
AU - Sangwook NAM
PY - 2004
DO -
JO - IEICE TRANSACTIONS on Electronics
SN -
VL - E87-C
IS - 1
JA - IEICE TRANSACTIONS on Electronics
Y1 - January 2004
AB - This paper describes the performance improvement of power amplifiers by defected ground structure (DGS). Due to the excellent capability of harmonic rejection and tuning, DGS plays a great role in improving the major nonlinear behaviors of power amplifier such as output power, harmonics, power added efficiency (PAE), and the ratio between the carrier and the third order intermodulation distortion (C/IMD3). In order to verify the improvement of performances by DGS, measured data for a power amplifier, which adopts a 30 Watts LDMOS device for the operation at 2.1-2.2 GHz, are illustrated under several operating bias currents for two cases, i.e., with and without DGS attached. The principle of the improvement is described by the simple Volterra nonlinear transfer functions with the consideration of different operating classes. The obtained improvement of the 30 Watts power amplifier, under 400 mA of I_dsQ as an example, includes the reduction in the second and third harmonics by 17 dB and 20 dB, and the increase in output power, PAE, and C/IMD3 by 1.3 Watts, 3.4%, and 4.7 dB, respectively.
ER -