431 results on '"Hwang, Keum Cheol"'
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102. Reconfigurable Dual-/Triple-Band Circularly Polarized Dielectric Resonator Antenna
103. A Low-Profile Ferrite Dipole VHF Antenna for Integrated Mast Applications
104. A High-Efficiency and Wide-Input Range RF Energy Harvester Using Multiple Rectenna and Adaptive Matching
105. A Design of 8 fJ/Conversion-Step 10-bit 8MS/s Low Power Asynchronous SAR ADC for IEEE 802.15.1 IoT Sensor Based Applications
106. Cavity-Backed Patch Filtenna for Harmonic Suppression
107. A High Performance Adaptive Digital LDO Regulator With Dithering and Dynamic Frequency Scaling for IoT Applications
108. LUT-Based Focal Beamforming System Using 2-D Adaptive Sequential Searching Algorithm for Microwave Power Transfer
109. An Ultra-Low Power, Adaptive All-Digital Frequency-Locked Loop With Gain Estimation and Constant Current DCO
110. Single-Fed Circularly Polarized Dielectric Resonator Antenna With an Enhanced Axial Ratio Bandwidth and Enhanced Gain
111. An Efficient Reconfigurable RF-DC Converter With Wide Input Power Range for RF Energy Harvesting
112. Broadband InGaP/GaAs HBT Power Amplifier Integrated Circuit Using Cascode Structure and Optimized Shunt Inductor
113. Scattering from a grooved conducting wedge
114. Design of a 900 MHz Dual-Mode SWIPT for Low-Power IoT Devices
115. A Low-Profile High-Gain and Wideband Log-Periodic Meandered Dipole Array Antenna with a Cascaded Multi-Section Artificial Magnetic Conductor Structure
116. Optimization of a Subarray Structure to Improve the $G/T$ of an Active Array Antenna
117. Active Phased Array Antenna Calibration Using Mutual Coupling
118. A design of a 5.6 GHz frequency synthesizer with switched bias LIT VCO and low noise on‐chip LDO regulator for 5G applications
119. 5.8 GHz High-Efficiency RF–DC Converter Based on Common-Ground Multiple-Stack Structure
120. A Sidelobe-Reduced, Four-Beam Array Antenna Fed by a Modified $4\times4$ Butler Matrix for 5G Applications
121. A -20 to 30 dBm Input Power Range Wireless Power System With a MPPT-Based Reconfigurable 48% Efficient RF Energy Harvester and 82% Efficient A4WP Wireless Power Receiver With Open-Loop Delay Compensation
122. A CMOS RF Energy Harvester With 47% Peak Efficiency Using Internal Threshold Voltage Compensation
123. A Fully Integrated Bluetooth Low-Energy Transceiver with Integrated Single Pole Double Throw and Power Management Unit for IoT Sensors
124. Octave Bandwidth Doherty Power Amplifier Using Multiple Resonance Circuit for the Peaking Amplifier
125. High-Efficiency Stacked Power Amplifier IC With 23% Fractional Bandwidth for Average Power Tracking Application
126. A 18–40 GHz Substrate Integrated Waveguide H-Plane Horn Antenna
127. Dual-Mode CMOS Power Amplifier Based on Load-Impedance Modulation
128. Sector-Beam Antennas for Wide Detection Area in 79 GHz Automotive Short Range Radar(SRR) Sensor
129. Isolation Improvement in Vivaldi Antennas Using DSRR
130. A 3.9 mW Bluetooth Low-Energy Transmitter Using All-Digital PLL-Based Direct FSK Modulation in 55 nm CMOS
131. A Highly Linear, AEC-Q100 Compliant Signal Conditioning IC for Automotive Piezo-Resistive Pressure Sensors
132. GaN‐HEMT asymmetric three‐way Doherty power amplifier using GPD
133. A Compact, Low-Profile Log-Periodic Meandered Dipole Array Antenna with an Artificial Magnetic Conductor
134. A Design of Fast-Settling, Low-Power 4.19-MHz Real-Time Clock Generator With Temperature Compensation and 15-dB Noise Reduction
135. A 39.5-dB SNR, 300-Hz Frame-Rate, 56 × 70-Channel Read-Out IC for Electromagnetic Resonance Touch Panels
136. 260- $\mu$W DCO With Constant Current Over PVT Variations Using FLL and Adjustable LDO
137. Miniaturized Log-periodic Dipole Array Antenna with Artificial Magnetic Conductor
138. A Triple-Mode Wireless Power-Receiving Unit With 85.5% System Efficiency for A4WP, WPC, and PMA Applications
139. Wideband Multiple Elliptical Antenna with Inductive Line
140. Design of a High Efficiency DC–DC Buck Converter With Two-Step Digital PWM and Low Power Self-Tracking Zero Current Detector for IoT Applications
141. A Compact Single-Stage Wide-Band Balun: A 4:1 Wide-Band Transmission-Line Balun Based on a Combination of Two Different Ferrite Cores
142. Hybrid Robust Optimization for the Design of a Smartphone Metal Frame Antenna
143. X‐band two‐stage Doherty power amplifier based on pre‐matched GaN‐HEMTs
144. Optimization of a Shared-Aperture Dual-Band Transmitting/Receiving Array Antenna for Radar Applications
145. Development of Porous Metal Mold Material using Vacuum Sintering Method
146. Doherty Power Amplifier Based on the Fundamental Current Ratio for Asymmetric cells
147. Series feeding rectangular microstrip patch array antenna for 77 GHz automotive radar
148. Low-profile ferrite loaded conical antenna
149. High-efficiency rectifier (5.2 GHz) using a Class-FDickson charge pump
150. A Design of a 92.4% Efficiency Triple Mode Control DC–DC Buck Converter With Low Power Retention Mode and Adaptive Zero Current Detector for IoT/Wearable Applications
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