[仿真]A NEW HIGH-TEMPERATUIRE SUPERCONDUCTING DOUBLE-HYBRID COUPLER WITH WIDE BANDWIDTH

 ABSTRACT Fl=H5HR  
We report on the design and performance of ]&Y^  
new high-temperature superconducting couplers F.$z7ee@  
fabricated in microstrip technolugy. We present 0,ryy,2  
experimental results for a 3 dB- and a 0 dB-coupler =ejU(1 g  
(i.e. a crossover device) at 10 GHz. The planar =cjO]  
coupler structures were patterned into YBaCuO pl&nr7\  
thin films deposited on MgO substrates on both V)/J2-w  
sides. As a design tool, we employed a commercial 9N9&y^SmD  
microwave simulation program. Verification #d\&6'O  
was done using special test chips. We attained extremely pIcg+~  
low insertion loss values over bandwidths lRg?||1ik  
of 45 per c .. s)qrlv5H  
-]zb3P  

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