Search Results - "Jang, Youna"

A Wideband Doherty Combiner with Phase Variation Compensation Using LTCC Applicable for High Power Transmission by Jang, Youna, Jeong, Kwanhun, Kim, Jiwon, Lee, Daeung, Ahn, Dal

“…In this paper, we propose a small-sized Doherty combiner with phase variation compensation using low temperature co-fired ceramic (LTCC) substrate. The…”
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Novel Wilkinson Power Divider with an Isolation Resistor on a Defected Ground Structure with Improved Isolation by Salman, Maaz, Jang, Youna, Lim, Jongsik, Ahn, Dal, Han, Sang-Min

“…A modified Wilkinson Power Divider is proposed in this paper that utilizes defected ground structure (DGS) in parallel with an isolation resistor. The proposed…”
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A New Doherty Combiner with Wide Bandwidth for Magnitude and Phase Balance Compensation by Jang, Youna, Seong, Cha Hye, Kang, Taehoon, Han, Sang-Min, Ahn, Dal

“…This paper proposes a novel Doherty combiner that uses a series and parallel resonant circuit for wideband. Unlike conventional combiners, the aim of the…”
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Design of a Wideband Balun Using IPD Technology for Compensating the Frequency Dependency by Jang, Youna, Jeong, Kwanhun, Lee, Yea-Ji, Kang, Taehoon, Lee, Sangmin, Koo, Seo, Ahn, Dal

“…In this paper, we propose a wideband balun using integrated passive device (IPD) technology. The proposed circuit is designed to compensate for the magnitude…”
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Analyzing Three Types of Design Methods for 5G N41 Band Acoustic Wave Filters by Jang, Youna, Ahn, Dal

“…This paper presents three design methods for acoustic wave (AW) filters: the direct conversion design method, the slope parameter method, and the band edge…”
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Wideband 90°phase shifter using modified composite resonant circuits for phase slope alignment by Jang, Youna, Ahn, Dal

“…This article proposes a new wideband 90°phase shifter, aligning the phase slope between a reference line and a mainline to reduce the slope deviation. The…”
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Dermal fibroblast cell‐derived exosomes for atopic dermatitis: In‐vitro test by Yoo, Kwangho, Thapa, Nikita, Lee, Jongjin, Jang, Youna, Lee, Jung Ok, Kim, Jaeyoung

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A new type of planar 180° hybrid using intentional impedance mismatch for improved bandwidth and arbitrary power division ratio by Jang, Youna, Koo, Seo, Lee, Daeung, Lim, Jongsik, Ahn, Dal

“…A wideband planar 180 hybrid is proposed for arbitrary power division ratios and implementing cascaded planar structure. In addition, the proposed structure…”
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A Compact and Broadband Magic Tee with Waveguide Filter for Ka-Band System by Jang, Youna, Choi, Yuseong, Choi, Jin-Woo, Ahn, Dal

“…In this letter, we propose and fabricate a waveguide Magic Tee with waveguide filter for Ka-band system. The proposed Magic Tee has a reduced z-axis arm, which…”
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Development of a New Equivalent Circuit of DGS with Ideal Transformer by Noun, Sreymom, Chhit, Sreyrong, Phan, Phally, Lim, Jong-Sik, Han, Sang-Min, Ahn, Dal, Jang, Youna

“…In this paper, a new equivalent circuit of a rectangular dumbbell‐shaped defected ground structure (DGS) with an ideal transformer is proposed. The proposed…”
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A Sub-6 GHz Switching System for Simultaneous Use of 2-Port Network Analyzer by 4 Users by Jang, Youna, Baek, Chang In, Kim, Dong Min, Ahn, Dal, Son, Seong-Ho

“…A vector network analyzer (VNA) is an expensive and essential device for measuring the scattering coefficients of RF devices in the research and development of…”
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A wideband power divider using LC resonant circuit for different phase output differences by Jang, Youna, Lee, Daeung, Koo, Seo, Kang, Tae Hoon, Kim, Jiwon, Ahn, Dal

“…A wideband Wilkinson power divider using parallel LC resonant circuit is proposed for different phase output differences. The design theory of the wideband…”
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Design of a Wideband Balun Using IPD Technology for Compensating the Frequency Dependency by Youna Jang, Kwanhun Jeong, Yea-ji Lee, Taehoon Kang, Sangmin Lee, Seo Koo, Dal Ahn

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Human Placenta Extract (HPH) Suppresses Inflammatory Responses in TNF-α/IFN-γ-Stimulated HaCaT Cells and a DNCB Atopic Dermatitis (AD)-Like Mouse Model by Lee, Jung Ok, Jang, Youna, Park, A Yeon, Lee, Jung Min, Jeong, Kyeongsoo, Jeon, So-Hyun, Jin, Hui, Im, Minju, Kim, Jae-Won, Kim, Beom Joon

“…Atopic dermatitis (AD), a chronic inflammatory disease, severely interferes with patient life. Human placenta extract (HPH; also known as human placenta…”
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A design of group delay equalizer using series and parallel resonator by Jang, Youna, Lee, Daeung, Koo, Seo, Choi, Kwansun, Lim, Jongsik, Cho, Jeongho, Ahn, Dal

“…A novel method of designing a group delay equalizer consisting of a typical 3‐dB hybrid coupler combined with one of newly proposed 4 types of resonator is…”
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Modified Doherty combiner with adjustable phase deviation by Lee, Daeung, Kim, Sungmin, Jang, Youna, Koo, Seo, Kim, In‐seon, Lim, Jongsik, Cho, Jeongho, Ahn, Dal

“…In this paper, we propose a newly enhanced Doherty combiner by adding a 180° transmission line to the stage of the peaking amplifier of a typical Doherty…”
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Using intentionally mismatching method by Jang, Youna, Park, Minwon, Kim, Heehwang, Lim, Jongsik, Choi, Kwansun, Ahn, Dal

“…ABSTRACT A new ring hybrid is proposed which we call the double ring hybrid. The double ring hybrid is implemented by cascading two branch line hybrids that…”
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Erratum for: Design of double ring hybrid using intentionally mismatching method by Jang, Youna, Park, Minwon, Kim, Heehwang, Lim, Jongsik, Choi, Kwansun, Ahn, Dal

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A new design method of the unequal Wilkinson power divider using an arbitrarily resistor value by Lee, Daeung, Do, Hanju, Jang, Youna, Kim, Heehwang, Han, Sang-Min, Lim, Jongsik, Choi, Kwansun, Ahn, Dal

“…ABSTRACT In this article, we suggest a new design method of the unequal Wilkinson power divider. The line impedances of the proposed formula are decided after…”
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A new design method of the unequal W ilkinson power divider using an arbitrarily resistor value by Lee, Daeung, Do, Hanju, Jang, Youna, Kim, Heehwang, Han, Sang‐Min, Lim, Jongsik, Choi, Kwansun, Ahn, Dal

“…ABSTRACT In this article, we suggest a new design method of the unequal Wilkinson power divider. The line impedances of the proposed formula are decided after…”
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