Miscellaneous active electrical nonlinear devices – circuits – and – Signal converting – shaping – or generating – Phase shift by less than period of input
Patent
1997-05-27
1998-09-15
Tran, Toan
Miscellaneous active electrical nonlinear devices, circuits, and
Signal converting, shaping, or generating
Phase shift by less than period of input
327117, 327239, 327360, G06G 716, H03H 1116
Patent
active
058084991
ABSTRACT:
Self-oscillation of a prescalar circuit is avoided by including offset generators on the inputs of the prescalar circuit. This ensures that when the transistors in one differential pair in the prescalar circuit transition from ON to OFF, the other differential pair of transistors will not transition. As a result, spikes are prevented in the differential pair that does not have a transition. A quadrature signal generator constructed with such a prescalar circuit provides an accurate output despite weak or non-existent input signals.
REFERENCES:
patent: 3624526 (1971-11-01), Silverman
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patent: 4825109 (1989-04-01), Reynolds
patent: 5444405 (1995-08-01), Truong et al.
patent: 5485110 (1996-01-01), Jones et al.
patent: 5515004 (1996-05-01), Alford et al.
patent: 5517134 (1996-05-01), Yaklin
patent: 5523717 (1996-06-01), Kimura
patent: 5703509 (1997-12-01), Hirata
Behbahani Farbod
Fotowat-Ahmady Ali
Linebarger Dan
Navid Nasrollah S.
Englund Terry L.
Philips Electronics North America Corporation
Tran Toan
Wieghaus Brian J.
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