TY - GEN
T1 - Novel DC-Biasing Circuits with Arbitrary Harmonic-Control Capability for Compact High-Efficiency Power Amplifiers
AU - Tanaxa, Shinichi
AU - Oda, Tomoya
AU - Saiki, Kento
N1 - Funding Information:
ACKNOWLEDGMENT This work was supported by JSPS KAKENHI Grant Number 15K06027.
Publisher Copyright:
© 2018 European Microwave Association.
PY - 2018/11/20
Y1 - 2018/11/20
N2 - The next generation mobile communication systems impose challenging performance, size and cost requirements on the power amplifiers. This paper presents novel DC-biasing circuits, which are compact and yet can control the harmonics almost arbitrarily, thereby allowing to save the space for additional harmonic tuning circuit. The proposed circuit consists of a composite right-/left-handed (CRLH) transmission line (TL) stub, of which the size and harmonic-control function can be tuned by modifying the dispersion diagram of the stub line. As a proof of concept, a compact 2-GHz 5-W GaN HEMT class-F PA using the versatile CRLH-TL stubs was fabricated, demonstrating 85% drain efficiency and 76% Dower-added efficiency.
AB - The next generation mobile communication systems impose challenging performance, size and cost requirements on the power amplifiers. This paper presents novel DC-biasing circuits, which are compact and yet can control the harmonics almost arbitrarily, thereby allowing to save the space for additional harmonic tuning circuit. The proposed circuit consists of a composite right-/left-handed (CRLH) transmission line (TL) stub, of which the size and harmonic-control function can be tuned by modifying the dispersion diagram of the stub line. As a proof of concept, a compact 2-GHz 5-W GaN HEMT class-F PA using the versatile CRLH-TL stubs was fabricated, demonstrating 85% drain efficiency and 76% Dower-added efficiency.
KW - class-F
KW - composite right-/left-handed transmission line
KW - harmonic tuning
KW - power amplifiers
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U2 - 10.23919/EuMC.2018.8541694
DO - 10.23919/EuMC.2018.8541694
M3 - Conference contribution
AN - SCOPUS:85059809197
T3 - 2018 48th European Microwave Conference, EuMC 2018
SP - 13
EP - 16
BT - 2018 48th European Microwave Conference, EuMC 2018
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 48th European Microwave Conference, EuMC 2018
Y2 - 25 September 2018 through 27 September 2018
ER -