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:
Jun. 06, 2000
Filed:
Feb. 26, 1997
Applicant:
Inventors:
Ronald D Boesch, Morrisville, NC (US);
John W Northcutt, Chapel Hill., NC (US);
Assignee:
Ericsson Inc., Research Triangle Park, NC (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04B / ;
U.S. Cl.
CPC ...
455127 ; 455553 ; 455572 ; 330288 ;
Abstract
An amplifier circuit in a wireless telecommunications device includes a digital-to-analog converter (DAC) and a mirror circuit to deliver variable current levels to transmission circuitry. The DAC receives a digital signal indicating the desired current strength under the particular device circumstances and requirements, and an analog signal corresponding thereto is forwarded to the mirror circuit, which amplifies the analog signal to the desired level for driving the transmission circuitry.