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. 26, 2002
Filed:
Feb. 19, 2002
Infineon Technologies AG, Munich, DE;
Abstract
To keep the power consumption in the modulator-demodulator of a mobile radio as low as possible, the modulator-demodulator has a voltage-controlled oscillator. Downstream of which a divider chain having a plurality of series-connected dividers each with an even-numbered division factor is connected. Each of the dividers produces a carrier signal and a carrier signal that is orthogonal with respect thereto. A quadrature modulator for the received signal is connected to a divider of the divider chain that produces the carrier signal at the required carrier frequency. In addition, a first vector modulator is provided whose mixers are connected to the dividers of the divider chain that produce the carrier signals at the required carrier frequencies. Connected downstream of the first vector modulator is a further divider with an even-numbered division factor, and connected downstream of this is a second vector modulator for producing a transmitted signal.