TY - JOUR
T1 - Novel DC-biasing circuits with arbitrary harmonics-control capability for compact high-efficiency power amplifiers
AU - Tanaka, Shinichi
AU - Oda, Tomoya
AU - Saiki, Kento
PY - 2019/1/1
Y1 - 2019/1/1
N2 - The next generation mobile communication systems impose challenging performance, size, and cost requirements on the power amplifiers (PAs). This paper presents novel DC-biasing circuits, which are compact and yet can control the harmonics almost arbitrarily. The proposed circuit consists of a composite right-/left-handed (CRLH) transmission line (TL) stub, of which the size and harmonics-control function can be tuned by modifying the dispersion diagram of the stub line. As a proof of concept, a compact 2-GHz 7-W GaN HEMT class-F PA using the versatile CRLH-TL stubs was fabricated, demonstrating 85.8% drain efficiency and 77.3% power-added efficiency.
AB - The next generation mobile communication systems impose challenging performance, size, and cost requirements on the power amplifiers (PAs). This paper presents novel DC-biasing circuits, which are compact and yet can control the harmonics almost arbitrarily. The proposed circuit consists of a composite right-/left-handed (CRLH) transmission line (TL) stub, of which the size and harmonics-control function can be tuned by modifying the dispersion diagram of the stub line. As a proof of concept, a compact 2-GHz 7-W GaN HEMT class-F PA using the versatile CRLH-TL stubs was fabricated, demonstrating 85.8% drain efficiency and 77.3% power-added efficiency.
KW - Class-F amplifiers
KW - Composite right-/left-handed transmission lines
KW - DC-biasing circuit
KW - Dispersion diagram
KW - Harmonic tuning techniques
KW - Power amplifiers
KW - Power-added efficiency
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U2 - 10.1017/S1759078719000473
DO - 10.1017/S1759078719000473
M3 - Article
AN - SCOPUS:85064907091
SN - 1759-0787
JO - International Journal of Microwave and Wireless Technologies
JF - International Journal of Microwave and Wireless Technologies
ER -