Miniaturized Dual-Band Bandpass Filter with Wide Inter Stopband for 5G Applications

Earla Shankar; Kanaparthi Phani Kumar; Vamsi Krishna Velidi; Sławomir Kozieł

doi:10.1109/tcsii.2024.3395621

Miniaturized Dual-Band Bandpass Filter with Wide Inter Stopband for 5G Applications

Abstract

This article presents the design of a miniaturized dual-band bandpass filter with a wide inter-stopband and improved isolation. A novel topology comprising the series connection of shunt cascaded coupled lines and quarter-wavelength open stubs is proposed to realize the dual-band filter along with half-wavelength stepped-impedance stubs. The circuit characteristics contain nine transmission zeros and four poles. The transmission zeros frequencies of the dual-band filter response have been theoretically verified using even-odd mode analysis. For experimental validation purposes, a dual-band filter with a center frequency ratio of 5.17 covering 5G applications (N12 & N48) has been implemented and fabricated using the microstrip technology. The full-wave simulated and measured filter responses are in good congruence.

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Keywords

BANDPASS FILTER, DUAL-BAND, CASCADED COUPLED LINE, CENTER FREQUENCY RATIO

Details

Category:

Articles

Type:

artykuły w czasopismach

Published in:

IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS II-EXPRESS BRIEFS no. 71, pages 4461 - 4465,
ISSN: 1549-7747

Language:

English

Publication year:

2024

Bibliographic description:

Shankar E., Kumar K. P., Velidi V. K., Kozieł S.: Miniaturized Dual-Band Bandpass Filter with Wide Inter Stopband for 5G Applications// IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS II-EXPRESS BRIEFS -Vol. 71,iss. 10 (2024), s.4461-4465

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