Title :
Cryogenic BTS Receiver Front End Demonstrator
Author :
Kolesov, Sergei ; Aminov, Bachtior ; Chaloupka, Heinz ; Kaiser, Thomas ; Kreiskott, Sascha ; Piel, Helmut ; Pupeter, Nico ; Wagner, Ralf ; Wehler, Dorothea ; Medelius, Hannes ; Draganic, Zoran
Author_Institution :
Cryoelectra GmbH, Wuppertal, Germany. sergei.kolesov@cryoelectra.de
Abstract :
A tower-mounted cryogenic BTS receiver front end demonstrator composed of HTS preselection filters followed by cryogenic LNAs has been designed, manufactured, and tested. A building block of the filters is a novel planar dual-mode structure exhibiting two controllable transmission zeros in addition to two poles. In combination with a very high unloaded Q-factor of the resonators (about 90,000 @ 60 K) this enables a new way of obtaining elliptic frequency characteristics, resulting in extreme steep filter skirts together with a very low insertion loss.
Keywords :
Cryogenics; Filtering theory; Frequency; High temperature superconductors; Insertion loss; Manufacturing; Poles and zeros; Q factor; Resonator filters; Testing;
Conference_Titel :
Microwave Conference, 2000. 30th European
Conference_Location :
Paris, France
DOI :
10.1109/EUMA.2000.338593
