A high-selectivity ceramic bandpass filter with controllable transmission zeros
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Yingxuan Fang
,
Mengxia Yu
,
Xiaochuan Zhang
Abstract
This paper proposes a microstrip filter with controllable transmission zeros based on the λ/4 stepped impedance resonator. This filter utilizes hybrid electric-magnetic coupling to generate transmission zeros, which can improve selectivity and stop-band performance. A fifth-order filter is designed and manufactured on a ceramic substrate with a center frequency of 26 GHz, bandwidth of 2 GHz and the signal suppression level is better than 42.51 dB from 10 to 22.8 GHz and 48.23 dB from 29.1 to 40 GHz. Furthermore, the proposed filter has a compact size of 2.074 × 1.071 mm (0.566λ g × 0.292λ g ).
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Research ethics: Not applicable.
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Author contributions: The authors have accepted responsibility for the entire content of this manuscript and approved its submission.
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Competing interests: The authors state no conflict of interest.
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Research funding: None declared.
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Data availability: The raw data can be obtained on request from the corresponding author.
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Articles in the same Issue
- Frontmatter
- Research Articles
- A calibration method for vector network analyzers using a line and three or more offset-reflect standards
- A fast convergent solution of wave propagation for multilayer inhomogeneous cylindrical dielectric waveguides using a semianalytical method
- Imaging of cylindrical inhomogeneites in a parallel plate waveguide with reverse time migration method
- A high-selectivity ceramic bandpass filter with controllable transmission zeros
- Review Article
- Revolutionizing healthcare with metamaterial-enhanced antennas: a comprehensive review and future directions
- Research Articles
- A study into strain sensor of cement-based material using CPW transmission lines
- Gain enhancement in octagonal shaped frequency reconfigurable antenna using metasurface superstrate
- High gain and high-efficiency compact resonator antennas based on spoof surface plasmon polaritons
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