Passive mixer with direct current bias

Miscellaneous active electrical nonlinear devices – circuits – and – Specific input to output function – Combining of plural signals

Reexamination Certificate

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Details

C327S359000, C455S326000

Reexamination Certificate

active

07355466

ABSTRACT:
Mixer circuits with direct-current bias are disclosed. An example embodiment of such a mixer includes a first differential transistor pair and a second differential transistor pair. The example mixer also includes first and second local oscillator signal terminals and first and second mixed signal terminals. The first and second local oscillator signal terminals are coupled with the first and second differential transistor pairs. The first mixed signal terminal is coupled with the first differential pair and the second mixed signal terminal is coupled with the second differential pair. The mixer further includes first and second baseband signal terminals, where each baseband signal terminal is coupled with the first differential pair and the second differential pair. The mixer still further includes a first current source and a second current source. The first current source is coupled with the first differential pair and the first mixed signal terminal, and provides a first direct-current bias to the first differential pair. The second current source is coupled with the second differential pair and the second mixed signal terminal, and provides a second direct-current bias to the second differential pair.

REFERENCES:
patent: 5642071 (1997-06-01), Sevenhans et al.
patent: 5859558 (1999-01-01), Chen et al.
patent: 5859559 (1999-01-01), Hong et al.
patent: 6040731 (2000-03-01), Chen et al.
patent: 6121819 (2000-09-01), Traylor
patent: 6242963 (2001-06-01), Su et al.
patent: 6480066 (2002-11-01), Madni
patent: 6483365 (2002-11-01), Morishita
patent: 6639447 (2003-10-01), Manku et al.
patent: 6810240 (2004-10-01), Donig et al.
patent: 6812771 (2004-11-01), Behel et al.
patent: 6826393 (2004-11-01), Komurasaki et al.
patent: 6871057 (2005-03-01), Ugajin et al.
patent: 7120414 (2006-10-01), Kim et al.
patent: 7161406 (2007-01-01), Ferris

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