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. 08, 2000
Filed:
Sep. 21, 1998
Applicant:
Inventors:
Shay-Ping T Wang, Long Grove, IL (US);
Stephen Chih-Hung Ma, Mesa, AZ (US);
James Edward Mitzlaff, Arlington Heights, IL (US);
Shaowei Pan, Lake Zurich, IL (US);
Assignee:
Motorola, Inc., Schaumburg, IL (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
H03F / ;
U.S. Cl.
CPC ...
330 10 ; 330136 ;
Abstract
A method and apparatus for efficient power amplification of a wideband signal with a correspondingly wide modulation bandwidth includes an envelope detector (220), a soft switch modulator (270), and a power amplifier (260). The soft switch modulator (270) drives a high side switch (330), and a low side switch (340) to amplify a pulsewidth modulated signal. Electrical signal path lengths within a soft switch driver (320) are dynamically modified so as to always turn off one switch before turning on the other.