A Superconducting Microstrip Ultra-Wideband (UWB) Bandpass Filter at VHF-Band

作者：Chen Wei^*; Guo Xubo; Cao Bisong; Zhang Xiaoping; Wei Bin; Zhang Ying; Lu Xinxiang

来源：IEEE Microwave and Wireless Components Letters, 2009, 19(10): 635-637.

DOI：10.1109/LMWC.2009.2029740

• Bandpass filter (BPF)
• microstrip
• short-circuited stubs
• superconducting
• ultra-wideband (UWB)

A compact superconducting ultra-wideband filter with a passband from 125 to 260 MHz is demonstrated. The filter consists of ten shunt short-circuited stubs separated by connecting lines. The short-circuited stubs are grounded via a grounding strip that is attached to the box wall by a number of SiAl bonding wires. The filter is realized on two 2 in YBCO/LaAlO(3) substrates, which are connected by two bonding wires. The measured results demonstrate an insertion loss of less than 0.08 dB and a return loss of better than 21 dB without tuning. Furthermore, the experimental results of the filter are in good agreement with the simulated ones.

• 出版日期2009-10
• 单位清华大学