摘要
一種寬頻帶高頻濾波器，其係利用一個開路共振子和一個短路共振子構成的超物質傳輸線，達到60 GHz頻段帶通濾波效果的濾波器。此濾波器之所以會擁有超寬頻允許帶，是兩個共振子在其共振模態下耦合的結果。其結果顯示共振耦合後形成的超寬頻帶可分為兩個部分，即左手允許帶及右手允許帶，這兩個允許帶共同提供一個介於57.4 GHz和63.6 GHz間、頻寬6.2 GHz的允許帶。此濾波器的禁止帶從57.4 GHz向下延伸至直流，從63.6 GHz向上延伸至109.4 GHz。上述特性皆說明，此帶通濾波器可被應用於60 GHz頻段無線傳輸。
A wideband high frequency filter uses a meta-material transmission line composed of an open-circuit resonator and a short-circuit resonator to realize a filter with a band-pass filtering effect at the band of 60 GHz. The filter has such an ultra-wide pass-band resulting from the coupling of the two resonators in the resonant modes thereof. As a result, the ultra wide frequency band formed by resonance coupling includes two portions: a left-handed pass-band and a right-handed pass-band. The two pass-bands jointly provide a pass-band ranging from 57.4 GHz to 63.6 GHz and having a bandwidth of 6.2 GHz. The stop-bands of the filter are respectively extended downward from 57.4 GHz to the DC current and extended upward from 63.6 GHz to 109.4 GHz. From the aforementioned description, it is known that this band-pass filter can be applied to wireless transmission at the frequency band of 60 GHz.