The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 10, 1999
Filed:
Oct. 13, 1994
Applicant:
Inventors:
Albert Joseph Fasulo, II, Ellicott City, MD (US);
Anthony Dean Haines, Hampstead, MD (US);
Martin William Schlining, III, Glen Burnie, MD (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04B / ; H04B / ;
U.S. Cl.
CPC ...
375224 ; 370241 ; 4552261 ;
Abstract
A testing apparatus for the digital processing portion of a satellite receiver. A software program generates an (I) and (Q) file of root cosine filtered (I) and (Q) DQPSK modulated sampled waveform. The waveform is coupled to a test board that stores the files in a PROM and generates the waveform at a rate determined by the receiver being tested. The output of the test board replaced the A/D converter of the receiver for testing. The waveform impairments are added to the stored software waveform.