Digital down converter and method

Details Digital down converter and method Digital down converter and method

1995-06-07

1998-05-26

Hsu, Alpus H.

Multiplex communications

Pathfinding or routing

Through a circuit switch

395287, H04J 300

Patent

active

057577943

ABSTRACT:
A digital down converter with a programmable mixing down frequency and a programmable extraction bandwidth uses a ROM based sin/cos generator plus a programmable high decimation filter followed by a gain compensating scaling multiplier and a fixed FIR filter. Output format options are also programmable, and programming commands are serially loaded into registers. Various components may be isolated for efficient testing and also subsystem operation.

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patent: 5088089 (1992-02-01), Gingell et al.
patent: 5237563 (1993-08-01), McNulty
patent: 5410542 (1995-04-01), Gerbehy et al.

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