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:
Nov. 14, 2006
Filed:
Feb. 08, 2002
Biagio Bisanti, Antibes, FR;
Stefano Cipriani, Vallauris, FR;
Eric Duvivier, Golfe Juan, FR;
Texas Instruments Incorporated, Dallas, TX (US);
Abstract
A transmitter architecture () provides for a stable and low noise modulator where the modulation bandwidth is uncorrelated to the TX loop bandwidth. The output signal () of the TX loop is demodulated by a demodulator () and the demodulated signal is compared by a comparator () with the modulating input signal (). The output of the comparator is then used to adjust a digital pre-emphasis filter () which preconditions the modulating input signal () in the digital domain. The preconditioning approach of the present invention provides for low noise because the transmitter designer can chose a narrow band for the TX loop which will also filter out the noise coming from the additional synthesizer () used to down convert the input signal.