On-chip high-Q (>3000) transformer-type spiral inductors

Y. C. Wu*, Mau-Chung Chang

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

17 Scopus citations


High quality factor (>3000) transformer-type spiral inductors are realised in a 0.18 μm complementary metal-oxide-semiconductor with active magnetic energy feedback from the secondary coil to the primary coil. This approach is robust and compatible with the main-stream integrated circuit 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.

Original languageEnglish
Pages (from-to)112-113
Number of pages2
JournalElectronics Letters
Issue number3
StatePublished - 31 Jan 2002

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