Abstract
SiGe BiCMOS low-pass filter for a multicarrier WCDMA base-station receiver is described in this paper. The 4th-order Chebyshev filter with a 0.1-dB passband ripple is designed to drive a high-resolution A/D converter. The -3-dB frequency of the implemented filter can be programmed to four different bandwidths: 2.5, 5, 7.5, and 10 MHz depending on the number of received WCDMA channels. The filter achieves +9.7-dBV in-band IIP3, +20-dBV out-of-band IIP3, and 8.5-nV/vHz input-referred noise density with 10-MHz bandwidth. The circuit uses a 2.5 V supply and has been fabricated in a 0.25-μm SiGe BiCMOS process.
Original language | English |
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Pages (from-to) | 77-84 |
Number of pages | 8 |
Journal | Analog Integrated Circuits and Signal Processing |
Volume | 54 |
Issue number | 2 |
DOIs | |
Publication status | Published - Feb 2008 |
MoE publication type | A1 Journal article-refereed |
Keywords
- BiCMOS
- Integrated circuits
- Low-pass filter
- Multicarrier system
- Receiver
- SiGe