Direct conversion receiver using vertical bipolar junction...

Details Direct conversion receiver using vertical bipolar junction... Direct conversion receiver using vertical bipolar junction...

2006-08-08

2006-08-08

Nguyen, Linh My (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Specific input to output function

Combining of plural signals

C438S309000

Reexamination Certificate

active

07088168

ABSTRACT:
This invention is about the direct conversion receiver. It is excellent the receiving sensitivity that DC off-set, matching characteristics of the relationship of I/Q circuits and noise characteristics are improved. In order to achieve this purpose, the direct conversion receiver uses vertical bipolar junction transistor available in standard triple-well CMOS technology in the switching element of mixer and base-band analog circuits. Furthermore, as using the passive mixer in the other practical example of this invention, this invention controls the occurrence of l/f noise. As using the vertical bipolar junction transistor available in standard triple-well CMOS in the base-band analog circuits, this invention realizes the direct conversion receiver that DC off-set, matching characteristics of the relationship of I/Q circuit and noise characteristics are improved.

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patent: 6177325 (2001-01-01), Jang
patent: 6249031 (2001-06-01), Verma et al.
patent: 6583661 (2003-06-01), Tanji et al.
patent: 6794730 (2004-09-01), Kim et al.
patent: 0267768 (1988-05-01), None
patent: 10-2000-0032519 (2000-06-01), None

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