A Broadband On-Chip Bandpass Filter Using Shunt Dual-Layer Meander-Line Resonators

Kai Da Xu, Xi Zhu, Yang Yang, Qiang Chen

Research output: Contribution to journalArticlepeer-review

27 Citations (Scopus)


A miniaturized broadband on-chip bandpass filter (BPF) is presented based on shunt dual-layer meander-line resonators and several metal-insulator-metal (MIM) capacitors. To understand the operational mechanism of the proposed BPF structure, it is analyzed using a simplified LC equivalent circuit model for further investigation of the transmission zeros (TZs) distributions. To validate the proposed idea, the BPF with three TZs is implemented in a commercial 0.13- \mu \text{m} SiGe (Bi)-CMOS process. The measured results show that the BPF has a center frequency at 18 GHz with a very broad bandwidth of 66.7%, and the minimum insertion loss within the passband is 2.9 dB. The chip, excluding the GSG pads, is about 0.318 mm \times0.392 mm.

Original languageEnglish
Article number9208674
Pages (from-to)1617-1620
Number of pages4
JournalIEEE Electron Device Letters
Issue number11
Publication statusPublished - 2020 Nov


  • Bandpass filters
  • broadband
  • meander-line resonators
  • on-chip devices
  • SiGe-based circuits


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