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논문 기본 정보

자료유형
학술저널
저자정보
Youna Jang (Soonchunhyang University) Cha Hye Seong (SAWNICS Inc.) Taehoon Kang (Soonchunhyang University) Sang-Min Han (Soonchunhyang University) Dal Ahn (Soonchunhyang University)
저널정보
한국전자파학회JEES Journal of Electromagnetic Engineering And Science Journal of Electromagnetic Engineering And Science Vol.23 No.4
발행연도
2023.7
수록면
355 - 361 (7page)

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초록· 키워드

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This paper proposes a novel Doherty combiner that uses a series and parallel resonant circuit for wideband. Unlike conventional combiners, the aim of the proposed combiners is to extend bandwidth for not only the magnitude bandwidth, but also phase balance by employing series and parallel resonant circuits at the output impedance of the peaking amplifier. Considering the load impedance of the peaking amplifier, the Doherty combiners were analyzed in the theory of this study by deriving the series and parallel resonant circuit values. The output phase balances are determined for the targeted bandwidth to achieve uniform phase balance in the proposed combiner I using a series resonator. For better magnitude bandwidth, the slope of reflection coefficient (Γ) at port 3 in the combiner II using series resonator was derived using the derivative of Γ with respect to ω. Experimental results show that the proposed combiner I has 63.5% magnitude fractional bandwidth (FBW) and 118% FBW with the phase balance at ±2.5°. The proposed combiner II also has 85% magnitude FBW and 118% FBW with the phase balance at ±2.5°.

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Abstract
I. INTRODUCTION
II. THE PROPOSED DOHERTY COMBINER I WITH SERIES RESONATOR
III. THE PROPOSED DOHERTY COMBINER II WITH SERIES AND PARALLEL RESONANT CIRCUITS
IV. SIMULATION AND FABRICATION RESULTS
V. CONCLUSION
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