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Article

4 Citations

7,800 Views

8 Pages

A Study on Millimetre-Wave Tunable Bandpass Filter Based on Polymer Cap Deflection

Seonho Seok,
Janggil Kim,
Nathalie Rolland and
Paul-Alain Rolland

Micromachines2012, 3(1), 28-35;https://doi.org/10.3390/mi3010028

6 January 2012

This paper presents a new tuning mechanism for millimetre-wave BPF based on deflection of the BCB membrane of BCB packaging cap. A 3-pole parallel-coupled microstrip filter operating at 60 GHz is first implemented on 30 µm-thick BCB polymer substrate...

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541 Views

18 Pages

W-Type Hexaferrite Film-Enabled Magnetic Resonance Engineering for Tailored Upper Stop-Band Suppression in Millimeter-Wave Bandpass Filters

Hyunwoo Koo,
Horim Lee,
Kyounghwan Kim,
Eiyong Park,
Yongjun Kim,
Sung-Hoon Hong,
Sang-Bok Lee and
Sungjoon Lim

Micromachines2026, 17(5), 534;https://doi.org/10.3390/mi17050534

27 April 2026

In this study, we propose a novel approach to enhance upper stop-band attenuation in a split-ring resonator-based bandpass filter by partially inserting W-type hexaferrite films into a strategically placed mechanical hole. The hexaferrite exhibits a...

(This article belongs to the Special Issue Microwave/Millimeter-Wave Devices and Metasurfaces)

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