Performance Improvements of a Microwave Oscillator Using High Temperature Superconducting Harmonic Mixer

Author

Xu, W.W. ; Zhang, Y.F. ; Jiang, X.K. ; Ling, K.. ; Chen, J. ; Wu, P.H.

Author_Institution

Nanjing Univ., Nanjing

Volume

17

Issue

2

fYear

2007

fDate

6/1/2007 12:00:00 AM

Firstpage

938

Lastpage

941

Abstract

Based on YBa₂Cu₃O₇ Josephson junction mounted on a pulse tube cryocooler, a compact superconducting harmonic mixer is used to phase-lock a microwave source at 3 mm waveband to a reference of high precision at much lower frequency, thus greatly improving the performances of the former. Currently the highest harmonic number at which phase locking can be realized is 60. The experimental system, main results, and the problem of how to increase the harmonic number are discussed in details.

Keywords

high-temperature superconductors; microwave oscillators; superconducting junction devices; superconducting mixers; Josephson junction; high temperature superconducting harmonic mixer; microwave oscillator; pulse tube cryocooler; Frequency; High temperature superconductors; Josephson junctions; Microwave oscillators; Nitrogen; Schottky diodes; Semiconductor superlattices; Superconducting device noise; Superconducting microwave devices; Superconducting photodetectors; Harmonic frequency mixing; high temperature superconductor; phase-locking; pulse tube cryocooler;

fLanguage

English

Journal_Title

Applied Superconductivity, IEEE Transactions on

Publisher

ieee

ISSN

1051-8223

Type

jour

DOI

10.1109/TASC.2007.898610

Filename

4277813