Dal Ahn

Low cost microwave oscillator using substrate integrated waveguide cavity

Compact, low insertion-loss, sharp-rejection, and wide-band microstrip bandpass filters

Review of substrate-integrated waveguide circuits and antennas

Ultra-wideband (UWB) bandpass filters using multiple-mode resonator

A design of the novel coupled-line bandpass filter using defected ground structure with wide stopband performance

A novel phase noise reduction technique in oscillators using defected ground structure