Research of ultra low loss millimeter wave narrow band superconducting filter

2016 Fiscal Year Final Research Report

• Project/Area Number: 25820136
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Electron device/Electronic equipment
• Research Institution: Utsunomiya University
• Principal Investigator: SHIMIZU TAKASHI 宇都宮大学, 工学(系)研究科(研究院), 准教授 (80500397)
• Research Collaborator: KOGAMI Yoshinori
• Project Period (FY): 2013-04-01 – 2017-03-31
• Keywords: 帯域通過フィルタ / 超伝導 / ミリ波 / 材料評価 / 共平面回路

Outline of Final Research Achievements

In this research, we studied on low loss millimeter wave narrow band filters. The database of material constants in 30-110GHz band, which are used for the filter design, was constructed and expanded by using the cutoff circular waveguide method , the empty cavity resonator method and the dielectric resonator based method. We realized 2-pole narrow bandpass filter with center frequency of 29.7GHz, relative bandwidth of 0.9%, and insertion loss of 2.4dB using CPW type circular slot resonator at room temperature. Moreover, design procedure of H slot resonator with high Q and good spurious characteristic are proposed. We designed 30GHz band 2-pole bandpass filter using H slot resonator. We have been shown the possibility of a millimeter wave band filter with sharp skirt response using the H slot resonator by 3D FEM simulation.

Free Research Field

ミリ波工学