A Low‐Loss Bandpass Filter With Intertwined Spiral Inductor Using GaAs‐IPD Technology
ABSTRACT This paper presents a compact bandpass filter with low insertion loss based on a GaAs substrate, utilizing integrated passive device (IPD) technology. The filter introduces parallel and grounding capacitors to the intertwined spiral inductor structure. Based on the intertwined spiral inductor structure, the filter achieves low insertion loss and extends the stopband by incorporating grounded capacitors. The fabricated filter, with a size of 0.011λ 0 × 0.0082λ 0 , achieves an insertion loss of 0.73 dB at a center frequency of 2.67 GHz, two transmission zeros are located at 5.46 GHz and 7.77 GHz, achieving a ‐20 dB stopband over the frequency range of 4.62–8.28 GHz.
Authors
- Chenyu Li (ORCID: https://orcid.org/0009-0004-8011-8080)
- Xianli Tang (ORCID: https://orcid.org/0000-0002-9590-2888)
- Hao Sun (ORCID: https://orcid.org/0000-0003-2578-2371)
- Huifeng Ding
- Xiaowei Sun
- Zhiying Chen
- Xiuli Gao
- Yun Sun (ORCID: https://orcid.org/0000-0001-5902-0004)
- Qian Gong
- Rong Qian (ORCID: https://orcid.org/0000-0002-4732-5553)
- Yang Cai
Institutions
- Shanghai University (CN)
- Chinese Academy of Sciences (CN)
- Shanghai Institute of Microsystem and Information Technology (CN)
- University of Chinese Academy of Sciences (CN)
Publication Details
- Journal
- Microwave and Optical Technology Letters
- Published
- 2025-05-01
- DOI
- https://doi.org/10.1002/mop.70241
- Primary Topic
- Microwave Engineering and Waveguides
- Type
- article
- Field-Weighted Citation Impact
- 0.00