Compact Wideband Microstrip Bandpass Filter for 5G Millimeter-Wave Applications
DOI:
https://doi.org/10.67603/jaate.v1i02.10442Keywords:
Microstrip filter, 5G, band pass filter, I Shaped, Millimeter-waveAbstract
This paper presents the design and analysis of a compact microstrip wideband bandpass filter tailored for 5G sub-6 GHz and millimeter-wave (mmWave) communication systems. The proposed filter is realized on a Rogers RO4003C substrate, featuring a relative permittivity (εᵣ) of 3.5, a loss tangent (tan δ) of 0.02, and a compact overall footprint of 10 × 10 × 0.4 mm³, making it suitable for integration into space-constrained RF front-ends. To ensure design robustness and performance validation, the structure is comprehensively modeled and simulated using three industry-standard electromagnetic tools: ANSYS HFSS, CST Microwave Studio, and Keysight ADS. The simulated S-parameter responses—including return loss, insertion loss, and bandwidth characteristics—exhibit excellent mutual agreement across all three platforms, confirming the filter's reliability and reproducibility. Owing to its miniature form factor, cost-effective substrate choice, and wideband passband characteristics, the proposed filter is well-suited for operation in the unlicensed frequency spectrum, which is increasingly exploited for high-data-rate, low-latency 5G and beyond-5G wireless applications.
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