Title :
Y-Ba-Cu-O mixer antenna array at 23 GHz
Author :
Suzuki, K. ; Hayashi, K. ; Murphy, A.T. ; Fujimoto, M. ; Yoshikawa, S. ; Yamaguchi, K. ; Enomoto, Y.
Author_Institution :
Supercond. Res. Lab., ISTEC, Tokyo, Japan
Abstract :
The benefits of using a Y-Ba-Cu-O Josephson junction mixer for a monolithic microwave integrated circuit (MMIC) antenna array are described. The junction has a new flat and lateral structure using a focused-ion-beam (FIB) with less than 10/sup 18/ cm/sup -2/ doses to damage MgO substrates before the Y-Ba-Cu-O film deposition. We have combined 6 elements of the flat and lateral junction in series in order to improve the mixer impedance. We have also developed a very small size microwave cryostat as an integrated assembly, in which the mixer antenna has been mounted. Using the series junction as a part of a mixer antenna which converted irradiated microwaves of frequency from 23 GHz to 1 GHz, classical music carried by 23 GHz microwaves has been successfully received by the Y-Ba-Cu-O mixer antenna.<>
Keywords :
MMIC; barium compounds; focused ion beam technology; high-temperature superconductors; microwave antenna arrays; mixers (circuits); superconducting junction devices; superconducting microwave devices; yttrium compounds; 23 GHz; Josephson junction mixer; MMIC antenna array; MgO; MgO substrates; Y-Ba-Cu-O; Y-Ba-Cu-O film deposition; classical music; flat lateral structure; focused-ion-beam; impedance; integrated assembly; microwave cryostat; series junction; Antenna arrays; Josephson junctions; MMICs; Microwave antenna arrays; Microwave antennas; Microwave integrated circuits; Mixers; Monolithic integrated circuits; Receiving antennas; Yttrium barium copper oxide;
Conference_Titel :
Microwave Symposium Digest, 1994., IEEE MTT-S International
Conference_Location :
San Diego, CA, USA
Print_ISBN :
0-7803-1778-5
DOI :
10.1109/MWSYM.1994.335187
