On-chip RF spiral inductors and bandpass filters using active magnetic energy recovery

Yi Cheng Wu*, Mau-Chung Chang

*Corresponding author for this work

Research output: Contribution to journalConference article

7 Scopus citations

Abstract

We present designs to achieve monolithic integration of high-Q spiral inductors and bandpass filters (BPFs) in standard CMOS technology. The designed transformer-type inductor behaves like an ideal inductor due to the active magnetic feedback from the secondary coil for compensating energy loss in the primary coil. This approach is compatible with mainstream IC technologies and has potential to achieve high-Q reactance with low power, low noise and high linearity. The fabricated inductors exhibit Q∼3000 between 1.5 to 2.1 GHz. The fabricated BPF shows 3 dB bandwidth of 120 MHz at 1.75 GHz with 3.1 dB in-band gain and 30 dB out-of-band rejection below 1.2 GHz.

Original languageEnglish
Pages (from-to)275-278
Number of pages4
JournalProceedings of the Custom Integrated Circuits Conference
DOIs
StatePublished - 1 Jan 2002
EventIEEE 2002 Custom Integrated Circuits Conference - Orlando, FL, United States
Duration: 12 May 200215 May 2002

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