Patent Number: 6,294,959

Title: Circuit that operates in a manner substantially complementary to an amplifying device included therein and apparatus incorporating same

Abstract: A circuit (200) includes a four-terminal voltage controlled voltage source (VCVS, 201) coupled to a three-terminal amplifying device (203), whereby when an input signal is applied to a negative input terminal (205) of the VCVS (201), the circuit (200) operates in a manner substantially complementary to the amplifying device (203). Such a circuit (200) may be considered a "virtual" three-terminal amplifying device and may be beneficially coupled in a complementary manner with another three-terminal amplifying device that is substantially identical to the three-terminal amplifying device (203) included in the circuit (200) to form a composite amplifier circuit (e.g., 407) that achieves intended performance over varying operating conditions.

Inventors: MacMillan; Bruce E. (Phoenix, AZ)


International Classification: H03F 3/345 (20060101); H03F 3/343 (20060101); H03F 1/30 (20060101); H03F 003/16 ()

Expiration Date: 09/25/2018