Development of IMD3 Measurement System Around 5 GHz Using HTS Notch Filters

Author

Akiya, M. ; Tatsunokuchi, T. ; Saito, Akihiro ; Ohshima, Shigetoshi

Author_Institution

Grad. Sch. of Sci. & Eng., Yamagata Univ., Yonezawa, Japan

Volume

23

Issue

3

fYear

2013

fDate

Jun-13

Firstpage

1500804

Lastpage

1500804

Abstract

We developed a third intermodulation distortion (IMD3) measurement system around 5 GHz in order to realize superconducting transmit filters in a mobile communication system. We added a high temperature superconducting (HTS) notch filter to the simple IMD measurement system and then focused on reducing the system noise levels. We designed and fabricated the HTS notch filter composed of three-pole hair-pin resonators with high attenuation and sharp skirt characteristics. The IMD characteristics measured using the system were reduced by 49.7 dBm by using the HTS notch filter.

Keywords

high-temperature superconductors; intermodulation measurement; mobile communication; resonators; superconducting filters; HTS notch filters; IMD characteristics; IMD measurement system; IMD3 measurement system; attenuation; development; high temperature superconducting notch filter; mobile communication system; skirt characteristics; superconducting transmit filters; system noise levels; third intermodulation distortion measurement system; three-pole hair-pin resonators; Band pass filters; Microwave filters; Resonator filters; Superconducting filters; Superconducting thin films; Yttrium barium copper oxide; Filter; superconducting; third intermodulation distortion;

fLanguage

English

Journal_Title

Applied Superconductivity, IEEE Transactions on

Publisher

ieee

ISSN

1051-8223

Type

jour

DOI

10.1109/TASC.2012.2236139

Filename

6392864