Search Results - "Manseok Uhm"

Synthesis of Resonator Filters With Arbitrary Topology Using Hybrid Method by UHM, Manseok, NAM, Sangho, KIM, Jeongphill

“…This paper presents a new synthesis method for resonator filters of arbitrary topology using an evolutionary hybrid method. This method consists of a…”
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Ultra-Wideband Bandpass Filters Using Quarter-Wave Short-Circuited Shunt Stubs and Quarter-Wave Series Transformers by Uhm, M., Kichul Kim, Filipovic, D.S.

“…This letter introduces a topology of a very wideband filter intended for the use in ultra-wideband 3.1-10.6 GHz applications. Basic filter configuration…”
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Automated Microwave Filter Tuning Using Curve Similarity and Weighted Least Squares by KWAK, Changsoo, UHM, Manseok, YOM, Inbok, HYO JOON EOM

“…This letter presents an automated microwave filter tuning algorithm that emulates manual tuning. Measured S-parameter curve's shape similarity and value…”
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Ka-band flexible power multibeam antenna by Sohyeun Yun, Manseok Uhm, Inbok Yom

“…The multibeam antenna system including multiport amplifiers meets instantaneous traffic requirements and mitigates serious Ka-band signal attenuation due to…”
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Design of coaxial waveguide Feed horn by Sohyeun Yun, Manseok Uhm, Inbok Yom

“…Dual band horn with TE11 coaxial waveguide mode was designed for the feed of the focused reflector antenna. The coaxial waveguide was adopted to simultaneously…”
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K-band substrate integrated waveguide to rectangular waveguide transition by Hongyeal Lee, Manseok Uhm, Inbok Yom

“…In this paper, a K-band broadband in-line transition from a substrate integrated waveguide (SIW) to a rectangular waveguide (RWG) is proposed. The transition…”
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Coupling matrix synthesis by solving nonlinear equations using Newton's method by Changsoo Kwak, Manseok Uhm, Inbok Yom

“…This paper presents a new coupling matrix synthesis method. The method synthesizes a coupling matrix by moving poles and zeros to their own target positions in…”
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Ka-band flexible multibeam antenna with improved gain and full power capability by Sohyeun Yun, Manseok Uhm, Inbok Yom

“…We propose a novel design method for a Ka-band flexible multibeam antenna system to improve gain without the waste of resources. The design degrees of freedom…”
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Feasibility study on combline filter for tunable filters by Changsoo Kwak, Manseok Uhm, Inbok Yom

“…In this paper, a combline filter is studied to see if the filter can be used for a reconfigurable filter that covers a frequency range of 2.0 GHz to 2.7 GHz…”
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Multibeam reflector antenna fed by few elements for Ka-band communication satellite by Sohyeun Yun, Manseok Uhm, Jangsup Choi, Inbok Yom

“…This paper presents the multibeam reflector antenna fed by array elements for Ka-band satellite communication services on the Korean Peninsula. We suggest the…”
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Design of Ka band reconfigurable beam antenna using genetic algorithm by Manseok Uhm, Sohyeun Yun, Hongyeal Lee, Changsoo Kwak, Donghwan Shin, Inbok Yom

“…This paper presents an efficient design method based on genetic algorithm and design results for Ka band reconfigurable beam antenna composed of an array-fed…”
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The analysis method for a flat-faceted reflector and the effect of facet configuration on radiation pattern by Changsoo Kwak, Manseok Uhm, Inbok Yom

“…A new algorithm for obtaining a flat-faceted reflector's radiation pattern is introduced. This method is noble in that uneven amplitude distribution due to…”
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New circular-shaped dual-mode cavity for mm-wave filters using LTCC technology by Kiburm Ahn, Manseok Uhm, Inbok Yom

“…This paper presents a new circular-shaped dual-mode cavity for mm wave filters in the LTCC substrate. The cavity enables a resonator filter to include the…”
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K-band 4th-order Tunable Filter Using Dual TE211 Mode and TE011 Mode by Kwak, Changsoo, Uhm, Manseok, Yom, Inbok

“…In this paper, a 4 th -order K-band tunable cavity resonator filter is introduced. The tunable filter uses a dual TE211 mode cavity to reduce the size and the…”
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Design of the Multibeam Reflector Antenna for GEO flexible Satellite by Yun, Sohyeun, Uhm, Manseok, Pil Chang, Dong, Lee, Byoung-Sun

“…This paper presents a multibeam reflector antenna fed by array elements for GEO flexible satellites. The reflector structure is designed within the constraints…”
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A Self-Equalized 8-poles Channel Filter for Ka-band Satellite Payloads by Lee, Hongyeal, Uhm, Manseok, Yom, Inbok, Baek, Duckki, Lee, Pilyong

“…In this paper, we design a waveguide input channel filter that can be used in the Ka-band next generation satellite payloads. The designed input channel filter…”
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A Ka-band GaAs Multi-function Chip with Wide-band 6-bit Phase Shifters and Attenuators for Satellite Applications by Jeong, Jin-Cheol, Uhm, Manseok, Jang, Dong-Pil, Yom, In-Bok

“…This paper presents a monolithic microwave integrated circuit multi-function chip with wide operating frequency range of 20 GHz to 32 GHz for a Ka-band phased…”
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Optimization of complex excitation of array-fed elements for communications and broadcasting large reflector satellite anntenna by Sohyeunn Yun, Manseok Uhm, Inbok Yom

“…The design of a antenna for the Korean Peninsula is presented. 30 m class large reflector and feed array system with 25 elements for both communication and…”
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Ku-band Up-converter Multi-function MMIC using 0.25 µm SiGe BiCMOS Technology by YounSub Noh, ManSeok Uhm, InBok Yom

“…Single Ku-band multi-function transmitter (Tx) MMIC for phased -array applications is designed using 0.25 μm SiGe BiCMOS technology. The MMIC includes gain…”
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Wideband mm-wave log-periodic antennas by Mruk, J., Zhou Hongyu, Uhm, M., Saito, Y., Filipovic, D.

“…Wideband mm-wave end-fire and planar log-periodic antennas compatible with a recently developed surface micromachined process known as PolyStratatrade are…”
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