Title :
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
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;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
DOI :
10.1109/TASC.2012.2236139
