US 11,894,821 B2
Scalable fir filter
Kristine M. Skinner, Hawthorne, CA (US); Tyler J. Thrane, El Segundo, CA (US); and Jason A. Ching, Irvine, CA (US)
Assigned to The Boeing Company, Chicago, IL (US)
Filed by THE BOEING COMPANY, Chicago, IL (US)
Filed on Feb. 12, 2020, as Appl. No. 16/788,814.
Application 16/788,814 is a continuation of application No. 15/974,687, filed on May 8, 2018, granted, now 10,581,407.
Prior Publication US 2020/0177165 A1, Jun. 4, 2020
Int. Cl. H03H 17/06 (2006.01); H03H 17/02 (2006.01)
CPC H03H 17/0223 (2013.01) [H03H 17/0211 (2013.01); H03H 17/06 (2013.01); H03H 2017/0245 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A Scalable Finite Impulse Response (“SFIR”) filter comprising:
a pre-processing section;
a post-processing section; and
a finite impulse response (“FIR”) Matrix coupled to the pre-processing section and the post-processing section, wherein the FIR Matrix comprises:
a plurality of filter taps, each filter tap of the plurality of filter taps having at least:
a first input;
a second input;
a multiplexer coupled to the first input and the second input;
a first flip-flop coupled to an output of the multiplexer;
a second flip-flop;
a multiplier coupled between the first flip-flop and an adder, the multiplier being directly coupled to the adder;
the adder coupled between the second flip-flop and the multiplier, the adder receiving output directly from the second flip flop and the adder receiving output directly from the multiplier; and
a coefficient section directly coupled to a first input of the multiplier, the first input of the multiplier coupled solely to the coefficient section, the coefficient section to solely provide a coefficient; and
a plurality of signal paths arranged to allow re-configurable data throughput between each filter tap of the plurality of filter taps.