Fabrication of a band-reject filter using dielectric-supported air-gapped microstriplines

• DOI: 10.1002/mop.20530
• Publication Date: 2004-11-17T12:47:49Z
• Authors: Tae-Jong Baek; Baek-Seok Ko; Dong-Hoon Shin; Sung-Chan Kim; Byoung-Ok Lim; Soon-Koo Kim; Hyun-Chang Park; Jin-Koo Rhee
• Keywords: 0202 electrical engineering, electronic engineering, information engineering; 02 engineering and technology

In this paper, we develop a new type of band-reject filter, which provides the practical usefulness of dielectric-supported air-gapped microstriplines. The filter is composed of a signal line of 10-μm height in order to reduce the substrate dielectric loss and a post of size 20 × 20 μm2 that supports the signal line. The fabricated band- reject filter has a measured reject band of 46.6 dB at 45 GHz and a pass band of 1.7 dB at 60 GHz. © 2004 Wiley Periodicals, Inc. Microwave Opt Technol Lett 44: 1–4, 2005; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.20530