An lpf can be simulated by setting the bpf ' s centre frequency to zero 將帶通濾波器的中心頻率設(shè)置到0 ,就可以模擬低通濾波器。
Bpf band - pass filter 帶通濾波器
A ka - band bpf would be developed and used in the rardar system 同時制做一只ka波段的波導(dǎo)濾波器,用于毫米波合成孔徑雷達系統(tǒng)中。
Bpf band pass filter 帶通濾波器
Bpf band pass filter 帶通濾波器
Under special conditions a bpf may also be used as an lpf or as an hpf 在特殊條件下,帶通濾波器也可以用作低通濾波器或高通濾波器。
Objective to evaluate the diagnosis and therapy of post - pneumonectomy bronchopleural fistula ( bpf ) 摘要目的探討肺切除術(shù)后支氣管胸膜瘺的診斷與防治特點。
Conclusion the key therapy for post - pneumonectomy bpf is to close the stoma and thoroughly eliminate the vomica 結(jié)論支氣管胸膜瘺重在預(yù)防,治療的關(guān)鍵在于封閉瘺口,徹底消滅膿腔。
It also overcomed the dificulty to realize characteristics bpf with fractional bandwidth greater than about 5 % in the form of multi - metal insert waveguide filter 既提高了濾波器的阻帶性能,又避免了單純的多膜片結(jié)構(gòu)能實現(xiàn)的濾波器帶寬較小的缺點。