Title :
A high-temperature superconducting diplexer for satellite communication applications
Author :
Jin, Mengtong ; He, Ming ; Ji, Lu ; Qu, Jingying ; Liu, Yong ; Wang, Songchao ; Zhang, Xu ; Zhao, Xinjie
Author_Institution :
Coll. of Inf. Tech. Sci., Nankai Univ., Tianjin, China
Abstract :
A C-band high temperature superconducting (HTS) diplexer is presented for the module of a multiplexer. The diplexer consists of a common node and two bandpass filters. The common node is designed by an open-loop microstrip line, which resonates at the frequency of 3995 MHz. Both channel filters consist of four rectangular spiral line resonators. The diplexer is fabricated by DyBa2Cu3O7 (DBCO) thin films on MgO substrate with a dimension of 30 mm × 10 mm. Experiments are performed in a cryocooler at 77K. The measured insertion loss is less than 0.1 dB for two channels. The isolation between the two channels is about 50 dB. Good agreements are achieved between measurement and simulation.
Keywords :
barium compounds; copper compounds; dysprosium compounds; high-temperature superconductors; microstrip lines; multiplexing equipment; resonator filters; satellite communication; superconducting filters; superconducting microwave devices; superconducting thin films; C-band high temperature superconducting diplexer; DBCO thin films; DyBa2Cu3O7; HTS diplexer; MgO; bandpass filters; channel filters; common node; frequency 3995 MHz; multiplexer module; open-loop microstrip line; rectangular spiral line resonators; satellite communication; superconducting filter; temperature 77 K; Band pass filters; Couplings; High temperature superconductors; Microwave filters; Multiplexing; Resonator filters; Superconducting filters; HTS diplexer; common node; superconducting filter;
Conference_Titel :
Microwave Workshop Series on Millimeter Wave Wireless Technology and Applications (IMWS), 2012 IEEE MTT-S International
Conference_Location :
Nanjing
Print_ISBN :
978-1-4673-0901-1
Electronic_ISBN :
978-1-4673-0903-5
DOI :
10.1109/IMWS2.2012.6338236