Communications: radio wave antennas – Antennas – Balanced doublet - centerfed
Patent
1978-11-29
1980-10-21
Blum, Theodore M.
Communications: radio wave antennas
Antennas
Balanced doublet - centerfed
H04B 700
Patent
active
042297397
ABSTRACT:
A spread beam computational section of a digital beam controller for an electronically controlled phased array radar includes a linear computational portion for computing a plurality of pairs of intermediate digital words corresponding to a desired spread beam radar pattern; and a non-linear computational portion for computing a spread beam phase command word from each computed pair of intermediate digital words which have been digitally rounded off. The instant disclosure is directed to apparatus which is disposed in the spread beam computational section for digitally rounding off each computed pair of intermediate digital words by adding randomly generated digital words to a residue bit portion thereof, preferably to the most significant bits of the residue bit portion. The corresponding pairs of resultant words from the additions are truncated to a primary number of bits, more significant than the residue bits, prior to being provided to the non-linear computational portion of the spread beam computational section. The randomization process embodied by the digital round off apparatus permits the computed intermediate digital words to be rounded off to fewer significant bits than that offered by other known systems while preserving the error contribution due to the round off operation within desirable limits. As a result, the non-linear computational hardware of the beam spreading computational section may be substantially reduced.
REFERENCES:
patent: 3500412 (1970-03-01), Trigon
patent: 3643075 (1972-02-01), Hayes
patent: 3877012 (1975-04-01), Nelson
patent: 3999182 (1976-12-01), Moeller et al.
Blum Theodore M.
Westinghouse Electric Corp.
Zitelli W. E.
LandOfFree
Spread beam computational hardware for digital beam controllers does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Spread beam computational hardware for digital beam controllers, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Spread beam computational hardware for digital beam controllers will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2025809