Tsinghua University

Ai-Ping Yen

Ta-Jen Yen

Ruei-Han Jiang

Tsung-Yu Huang

A wideband high frequency bandpass filter is disclosed, which includes an open-circuit resonator structure and a short-circuit resonator structure. The open-circuit resonator has a signal transmission strip line and a T-shaped strip line. Both ends of the signal transmission strip line are bent toward to opposite ends of the T-shaped strip line respectively, so as to form gaps in the open-circuit resonator. The open-circuit resonator structure and the short-circuit resonator structure are coupled under the resonant mode, thereby achieving a bandpass filtering at 60 GHz.

Wideband high frequency bandpass filter

A wideband high frequency bandpass filter uses a metamaterial transmission line composed of an open-circuit resonator and a short-circuit resonator to realize a bandpass filter at the band of 60 GHz. The bandpass filter has an ultra-wide passband resulting from the coupling of the two resonators in the resonant modes thereof. The ultra wide passband formed by resonance coupling includes a left-handed passband and a right-handed passband. The two passbands jointly provides a passband ranging from 57.4 GHz to 63.6 GHz and having a bandwidth of 6.2 GHz. The stopbands of the bandpass filter are respectively extended downward from 57.4 GHz to the DC current and extended upward from 63.6 GHz to 109.4 GHz. The bandpass filter of the present invention can be applied to wireless transmission at the band of 60 GHz.

Growing community of inventors

Hsinchu County, Taiwan

Ai-Ping Yen