A CMOS polyphase low-IF filter with on-chip frequency control

Lu, Wenqing; Cheng, Shiwei; Liu, Yang; Cao, Shengguo; Zhang, Ke; Zhou, Xiaofang

doi:10.1109/icasic.2007.4415722

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Gm-c Poly-phase Filter Design1

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2014

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“…So shifting the frequency transformation of a low-pass filter with a frequency ! o , we can get the frequency transformation of a poly-phase filter [3].…”

Section: Gm-c Poly-phase Filter Designmentioning

confidence: 99%

A tunable Gm-C polyphase filter with high linearity and automatic frequency calibration

Zhou

Chen

et al. 2014

IEICE Electron. Express

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In this paper, a new CMOS Gm-C poly-phase filter used in Low-IF receiver is presented. As the requirements of multi-model and multi-band determine the frequency tunability, a master-slave transconductance control circuit is designed. Besides, a low power consumption automatic frequency calibrate circuit is used to resist the PVT. A novel 4 th order poly-phase filter is designed in SMIC 0.18 µm standard CMOS process. Consuming 1.1 mA from a 1.8 V voltage, simlution results show that the filter has a tunability of center frequency from 150 kHz to 500 kHz and bandwith from 100 kHz to 900 kHz independently. Meanwhile, the polyphase filter achieves a IIP3 above 18 dBm.

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“…So shifting the frequency transformation of a low-pass filter with a frequency ! o , we can get the frequency transformation of a poly-phase filter [3].…”

Section: Gm-c Poly-phase Filter Designmentioning

confidence: 99%

A tunable Gm-C polyphase filter with high linearity and automatic frequency calibration

Zhou

Chen

et al. 2014

IEICE Electron. Express

View full text Add to dashboard Cite

show abstract

A CMOS polyphase low-IF filter with on-chip frequency control

Cited by 1 publication

References 4 publications

A tunable Gm-C polyphase filter with high linearity and automatic frequency calibration

A tunable Gm-C polyphase filter with high linearity and automatic frequency calibration

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