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:
Mar. 20, 1984
Filed:
May. 29, 1981
Applicant:
Inventor:
Carl R Ryan, Gilbert, AZ (US);
Assignee:
Motorola Inc., Schaumburg, IL (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03C / ; H04L / ;
U.S. Cl.
CPC ...
332 / ; 375 47 ; 375 64 ;
Abstract
An SMSK modulator wherein the output of a bi-phase modulator is passed through a notch filter and a band pass filter to produce an SMSK signal for transmission. The notch filter and band pass filter are constructed to simulate the output (center lobe) of an SMSK conversion filter, which is defined as a filter that converts a bi-phase shift keyed (BPSK) modulated signal into MSK.