Title :
Design of an RF Low-Noise Bandpass Filter Using Active Device Reduction Technique
Author :
Chung, Moon-Seok ; Kim, Il-Soo ; Yun, Sang-Won
Author_Institution :
Dept. of Electr. Eng., Sogang Univ., Seoul
fDate :
3/1/2007 12:00:00 AM
Abstract :
This letter presents a new design for the radio frequency low-noise bandpass filter (BPF) using the active device reduction technique. In a conventional active BPF based on the negative resistance method, the number of active devices depends on the order of the BPF. In the proposed design, the number of active devices is reduced in half, using the suggested new technique. Compared with the conventional active BPF, the proposed one shows better noise figure and consumes less power. We apply this technique to the design of the second order BPF and verify that the measured results exhibit good active filter performances
Keywords :
UHF filters; active filters; band-pass filters; RF low-noise bandpass filter; active device reduction technique; active filter performances; negative resistance circuits; noise figure; second order bandpass filter; Active filters; Band pass filters; Electrical resistance measurement; Equivalent circuits; Microwave integrated circuits; Noise figure; Parasitic capacitance; Radio frequency; Radiofrequency integrated circuits; Resonator filters; Active filters; bandpass filters (BPFs); negative resistance circuits;
Journal_Title :
Microwave and Wireless Components Letters, IEEE
DOI :
10.1109/LMWC.2006.890470