Coded data generation or conversion – Analog to or from digital conversion – Nonlinear
Patent
1994-02-28
1995-09-19
Young, Brian K.
Coded data generation or conversion
Analog to or from digital conversion
Nonlinear
H03M 118
Patent
active
054519489
ABSTRACT:
Two automatic gain control (AGC) loops are connected by a feedforward signal. An intermediate frequency (IF) filter may be located between the output of the front-end loop and the input of the back-end loop. Stability and responsiveness are improved because neither AGC loop includes a narrowband filter. The front-end loop may include an analog gain-controlled element, but the remainder of the invention may be implemented digitally. The front-end loop prevents overloading of the A/D converter that feeds the gain-controlled signal to the remainder of the invention, and the back-end loop compensates for actions taken in the front-end loop.
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An-302 Application Note, Analog Devices, 1993 Applications Reference Manual, pp. 3-103, Jun. 13, 1991.
Cubic Communications, Inc.
Young Brian K.
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