Superconductor mixer and phase control method therefor

Details Superconductor mixer and phase control method therefor Superconductor mixer and phase control method therefor

1997-06-16

1999-07-06

Vo, Nguyen

Telecommunications

Receiver or analog modulated signal frequency converter

Frequency modifying or conversion

327113, 505202, H04B 126

Patent

active

059208112

ABSTRACT:
In a superconductor mixer, a non-linear element is provided on a substrate. The non-linear element comprises at least one Josephson junction connected in series. An antenna pattern of superconductor, an intermediate frequency output pattern of superconductor, and a bias current pattern of superconductor are connected to the non-linear element. A signal high frequency wave (RF) and a local reference frequency wave (LO) are received by the antenna pattern and then absorbed in the non-linear element to obtain an intermediate frequency (IF) signal. Then, with applying a current to the series connected Josephson junction in the non-linear element from the bias current pattern, the intermediate frequency (IF) signal as a frequency signal of a difference between the signal high frequency wave (RF) and the local reference frequency wave (LO) is output to the intermediate frequency output pattern. At this time, by varying the current supplied from the bias current pattern, a phase of the output intermediate frequency (IF) signal is varied.

REFERENCES:
patent: 5493719 (1996-02-01), Smith et al.
patent: 5790078 (1998-08-01), Suzuki et al.
J.H. Takemoto-Kobayashi et al., "Monolithic High-Tc Superconducting Phase Shifter at 10 GHz", 1992 IEEE MTT-S Digest, 1992, pp. 469-472.

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