Miscellaneous active electrical nonlinear devices – circuits – and – Signal converting – shaping – or generating – Phase shift by less than period of input
Patent
1998-10-23
2000-12-12
Lam, Tuan T.
Miscellaneous active electrical nonlinear devices, circuits, and
Signal converting, shaping, or generating
Phase shift by less than period of input
327254, H03K 513
Patent
active
061604348
ABSTRACT:
Transistors (MP1 and MP2) supply a current (I.sub.0) for nodes (K and L), respectively. Transistors (MN10 and MN11) draw the same current from nodes (K and L), respectively. A parallel connection of serial connections (N1 and N2) draws a current (I.sub.1) from the node (K) only when an exclusive OR of clocks (S1 and S2) is "H". On the other hand, a parallel connection of serial connections (N3 and N4) draws a current (I.sub.1) from the node (L) only when the exclusive OR of clocks (S1 and S2) is "L". When the current (I.sub.1) is drawn from the node (K), the current (I.sub.1) flows out from the node (L) and when the current (I.sub.1) is drawn from the node (L), the current (I.sub.1) flows into the node (L). In the serial connections (N1 to N4), each of the clocks (S1 and S2) and their inverted signals (S1B and S2B) is applied to one of the gates of the transistors (MN1 to MN8) and therefore a uniform input load is obtained. With this configuration provided is a 90-degree phase shifter which achieves the uniform input load to improve a phase offset.
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Morooka Yoshikazu
Nakase Yasunobu
Watanabe Naoya
Yoshimura Tsutomu
Lam Tuan T.
Mitsubishi Denki & Kabushiki Kaisha
Nguyen Hiep
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