He-Kai Jhuang

Design of a New Tri-Band Microstrip BPF Using Combined Quarter-Wavelength SIRs

Ching-Her Lee, C.-I.G. Hsu, He-Kai Jhuang, 2006, IEEE Microwave and Wireless Components Letters.

Design of a New Bandpass Filter Using Anti-Parallel Coupled Asymmetric SIRs

Chung-I G. Hsu, Ching-Her Lee, He-Kai Jhuang, 2006, IEICE Trans. Electron..

Spiral SIRs form dual-band filter

Ching-Her Lee, He-Kai Jhuang, Chung I G Hsu, 2007 .