Miscellaneous active electrical nonlinear devices – circuits – and – Specific input to output function – Combining of plural signals
Patent
1997-08-26
1999-03-23
Le, Dinh
Miscellaneous active electrical nonlinear devices, circuits, and
Specific input to output function
Combining of plural signals
327113, 327355, 327357, 327356, 327560, 327563, 455333, G06G 716, H03K 522
Patent
active
058865608
ABSTRACT:
A multiplier includes first through fourth transistors (Q.sub.1, Q.sub.2, Q.sub.3, Q.sub.4) and a current source (I.sub.0) The first transistor has a base electrode connected to a first input terminal (T1) and a collector electrode connected to a first output terminal (T5). The second transistor has a base electrode connected to a second input terminal (T2) and a collector electrode connected to a second output terminal (T6). The third transistor has a base electrode connected to a third input terminal (T3) and a collector electrode connected to the second output terminal. The fourth transistor has a base electrode connected to a fourth input terminal (T4) and a collector electrode connected to the first output terminal. Supplied with voltages of V.sub.1 and V.sub.2, a voltage supplying circuit produces and supplies voltages of (1/2)V.sub.1, (-1/2)V.sub.1, {(1/2)V.sub.1 -V.sub.2 }, and {(-1/2)V.sub.1 -V.sub.2 } to the input terminals. The output terminals are supplied with first and second output currents.
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Le Dinh
NEC Corporation
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