Micro-wave mixing circuit and down-flow converter using the same

Details Micro-wave mixing circuit and down-flow converter using the same Micro-wave mixing circuit and down-flow converter using the same

1997-09-18

1999-03-30

Eisenzopf, Reinhard J.

Telecommunications

Receiver or analog modulated signal frequency converter

Frequency modifying or conversion

455330, 455327, 333 21R, 333104, 333116, H04B 126

Patent

active

058900608

ABSTRACT:
A micro-wave mixing circuit produces producing a stable frequency conversion characteristic against a dispersion of output voltage of a local oscillation signal tapped off from a local oscillator. A micro-wave signal fed into a micro-wave signal input can be converted into an intermediate frequency signal of 1 GHz bandwidth where a stable frequency conversion characteristic is maintained against a dispersion of an output voltage of a local oscillation signal, by supplying bias current from a bias supply circuit to an anode of a Schotkky barrier diode responsive to a local oscillation output which is supplied from a local oscillator.

REFERENCES:
patent: 5153469 (1992-10-01), Petted et al.
patent: 5446923 (1995-08-01), Martinson et al.
patent: 5471664 (1995-11-01), Kim
patent: 5754951 (1998-05-01), Kashima et al.
Henry H. Cross, "Automatic Bias Circuit for Mixers", Microwave Journal, vol. 26, No. 5, May 1983.
European Search Report for Int'l Appln No. EP 97 11 6149, dated 21 Nov. 1997.

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