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Birth
Detlef Birth, Dieburg DE
| Patent application number | Description | Published |
|---|---|---|
| 20080224339 | Prismatic Films for Optical Applications - The invention relates to coextruded foils with prism structure, to a process for production of coextruded foils with prism structure and to uses. | 09-18-2008 |
Winfrid Birth, Veitsbronn DE
| Patent application number | Description | Published |
|---|---|---|
| 20090168921 | TRANSMISSION SPECTRA - The present invention relates to transmitter devices and transmission methods of transmitting a modulated GMSK- or EDGE-signal in a transmission system, wherein normally the pulse shaping follows the given rules of standards for these mobile radio systems. The amount of TX spectra in the adjacent TX channels is predetermined by these rules. A second filtering step is suggested to be introduced for attenuating predetermined unwanted spectra in the adjacent transmit channels. A second goal of this suggestion is to reduce spectra at adjacent TX channels also at cases of nonlinearity at the TX Power Amplifier of the RF transmitter Nothing must be changed in standards of mobile communication systems, for example GSM. | 07-02-2009 |
| 20100026396 | COMPENSATED HIGH-SPEED PLL CIRCUIT - The invention relates to a compensation method and phase-locked loop (PLL) circuit, wherein different kinds of two-point modulations are used and the integral regulator of a loop filter is replaced by introducing predetermined settings at the loop filter or at a voltage controlled oscillator. Thereby, the dynamic settling time of the PLL circuit can be improved to gain time for other circuit components which can thus assure required precision for the modulation. | 02-04-2010 |
Winfrid Birth, Eindhoven DE
| Patent application number | Description | Published |
|---|---|---|
| 20090140789 | CALIBRATION STRATEGY FOR REDUCED INTERMODULATION DISTORTION - The present disclosure relates to a circuit and method for reducing intermodulation distortion in a non-linear device having a differential output stage. A calibration circuit is provided for adding a calibration offset voltage to at least one of one output branch of the differential output stage and a bulk terminal of a transistor of one output branch of the differential output stage to obtain a desired output offset at the differential output stage. Thereby, a certain degree of asymmetry is introduced so that both output branches of the differential output stage are matched or optimized to improve the IIP | 06-04-2009 |