Zobrazeno 1 - 10
of 17
pro vyhledávání: '"Sooncheol Bae"'
Autor:
Seungmin Woo, Woojin Choi, Jaekyung Shin, Yifei Chen, Youngchan Choi, Sooncheol Bae, Hyungjin Jeon, Youngyun Woo, Youngoo Yang
Publikováno v:
Journal of Electromagnetic Engineering and Science, Vol 24, Iss 4, Pp 401-410 (2024)
Owing to the high impedance transformation ratio, the Doherty power amplifier (DPA) with a large output power back-off generally has bandwidth limitations. This study proposes an asymmetric DPA with an impedance distribution and control circuit (IDCC
Externí odkaz:
https://doaj.org/article/9739af8a21d940bf863c4828fd1db83d
Autor:
Sooncheol Bae, Hansik Oh, Woojin Choi, Jaekyung Shin, Yifei Chen, Hyeongjin Jeon, Young Chan Choi, Sunwoo Nam, Soohyun Bin, Yoonjung Lee, Kang-Yoon Lee, Keum Cheol Hwang, Youngoo Yang
Publikováno v:
IEEE Access, Vol 12, Pp 41980-41987 (2024)
This paper presents a Class-E/F3 switching power amplifier (SPA) with reduced second harmonic leakage using parallel resonant circuit in series for the second harmonics. The proposed Class-E/F3 SPA has a structure utilizing a series resonant circuit
Externí odkaz:
https://doaj.org/article/8198c74b877d45aa81c8fa991096ca65
Autor:
Jaekyung Shin, Woojin Choi, Yifei Chen, Hyeongjin Jeon, Sooncheol Bae, Young Chan Choi, Hyunuk Kang, Hyungmo Koo, Young Yun Woo, Kang-Yoon Lee, Keum Cheol Hwang, Youngoo Yang
Publikováno v:
IEEE Access, Vol 11, Pp 101425-101434 (2023)
The load networks of advanced Doherty power amplifiers (DPAs) have traditionally been designed according to the ABCD parameters. In this paper, design conditions as an impedance transformation condition and an effective electrical length were used to
Externí odkaz:
https://doaj.org/article/9b4b5c82973b421a876934448f92d286
Autor:
Yifei Chen, Woojin Choi, Jaekyung Shin, Hyeongjin Jeon, Sooncheol Bae, Soohyun Bin, Sunwoo Nam, Young Chan Choi, Hyunuk Kang, Kang-Yoon Lee, Keum Cheol Hwang, Youngoo Yang
Publikováno v:
IEEE Access, Vol 11, Pp 66478-66487 (2023)
This paper presents a new compact load network for Doherty power amplifiers (DPAs) with only two matching networks, such as an output matching network of the carrier amplifier, and the post-matching network (PMN), even in the presence of parasitic ci
Externí odkaz:
https://doaj.org/article/9913c95a514b40cd8fb65921c5f1e2a2
Autor:
Yifei Chen, Woojin Choi, Jaekyung Shin, Hyeongjin Jeon, Sooncheol Bae, Young Chan Choi, Cheon-Seok Park, Kang-Yoon Lee, Keum Cheol Hwang, Youngoo Yang
Publikováno v:
IEEE Access, Vol 11, Pp 11479-11488 (2023)
A new load modulation combiner (LMC) having the capability of back-off control is proposed for a Doherty power amplifier (DPA). The proposed LMC consists of two transmission lines tied at the combining node, and a shunt element across the other ends
Externí odkaz:
https://doaj.org/article/402e9de6776943b2ab8585b6c2336944
Autor:
Yifei Chen, Woojin Choi, Jaekyung Shin, Hyeongjin Jeon, Sooncheol Bae, Young Chan Choi, Seungmin Woo, Young Yun Woo, Hansik Oh, Kang-Yoon Lee, Keum Cheol Hwang, Youngoo Yang
Publikováno v:
IEEE Access, Vol 10, Pp 77487-77497 (2022)
This paper presents a generalized expression of the modified load networks (MLNs) for Doherty power amplifiers (DPAs) with an extended output power back-off (OBO) range. Based on the analysis using this new expression, a new circuit structure general
Externí odkaz:
https://doaj.org/article/cf05fa74105c4fc1b4898f927811ee14
Autor:
Kuhyeon Kwon, Woojin Choi, Jaekyung Shin, Yifei Chen, Young Chan Choi, Sooncheol Bae, Hyeongjin Jeon, Jiwon Hwang, Seungmin Woo, Young Yun Woo, Kang-Yoon Lee, Keum Cheol Hwang, Youngoo Yang
Publikováno v:
IEEE Access, Vol 10, Pp 70440-70446 (2022)
The load network of the carrier amplifier for the conventional Doherty power amplifier (DPA) consists of an impedance matching circuit, an offset line, and a $\lambda $ /4 transmission line (TL), so that the overall electrical length of the network c
Externí odkaz:
https://doaj.org/article/ce46fb51ee854d7984dc8df3f972d8da
Autor:
Jaekyung Shin, Jongseok Bae, Hyungmo Koo, Sooncheol Bae, Jongyun Na, Hansik Oh, Hyungjin Jeon, Hoseok Jung, Young Chan Choi, Seungmin Woo, Chan Mi Song, Keum Cheol Hwang, Kang-Yoon Lee, Youngoo Yang
Publikováno v:
IEEE Access, Vol 9, Pp 72316-72325 (2021)
The microwave power transfer (MPT) system requires a massive Tx array for building a focused radio wave to efficiently transfer power to the Rx. Beamforming IC is one of the core elements for the massive Tx array. This paper presents a 5.8 GHz 4-chan
Externí odkaz:
https://doaj.org/article/37a8382640924091a904f9269925b25b
Autor:
Jaekyung Shin, Jongseok Bae, Hyungmo Koo, Sooncheol Bae, Jongyun Na, Hansik Oh, Hyungjin Jeon, Hoseok Jung, Young Chan Choi, Seungmin Woo, Chan Mi Song, Keum Cheol Hwang, Kang-Yoon Lee, Youngoo Yang
Publikováno v:
IEEE Access, Vol 9, Pp 83551-83551 (2021)
In the above article [1], the received power in dc referred from the reference [2], which is the reference [35] in the original article [1], was incorrectly introduced. It was written as 0.2 W (dc) in the introduction of [1], but the correct received
Externí odkaz:
https://doaj.org/article/0013cbfcf0864242851b0f00dd30cca1
Publikováno v:
2022 IEEE International Symposium on Radio-Frequency Integration Technology (RFIT).
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6462adb99019bafae822820a4856316a
https://doi.org/10.1109/rfit54256.2022.9882498
https://doi.org/10.1109/rfit54256.2022.9882498