A 3-pole Chebyshev bandpass filter, that employs on-chip passive elements with Q-enhancement technique, achieves an insertion loss of 0 dB and a passband of 60 MHz around a center frequency of 2140 MHz. The Q-enhancement technique is based on coupled-inductor negative resistance generator. In contrast to conventional negative resistance generator, this technique compensates resonator loss without introducing distortion in the filter response in the passband. Fabricated in a 0.25-μm CMOS, the filter consumes 7 mA from a 2.5-V supply. The filter occupies an area of 1.3 mm×2.7 mm
Published in:
Solid-State Circuits, IEEE Journal of
(Volume:37
,
Issue:
5
)
Date of Publication: May 2002