| Patent application number | Description | Published |
|---|
| 20090072925 | FREQUENCY TUNING CIRCUIT FOR LATTICE FILTER - A lattice tunable filtering circuit includes a first input and a second input, and a first output and a second output. The circuit includes two series branches and two parallel branches. The first and second series branches include a Tunable Resonator Component (TRC) which presents a first series resonance frequency whereas the third and fourth parallel branches present a second series resonance frequency which has a value being lower than that of the first series resonance frequency. The first and second series resonance frequencies are tunable by one analog control quantity. The filtering circuit further includes a feedback control loop for the control of the analog quantity, which feedback is based on a criterion of equality between the modulus of impedances Zs and Zp. | 03-19-2009 |
| 20090102316 | LAMB WAVE RESONATOR - A Lamb wave resonator includes a piezoelectric layer, and a first electrode against a first face of the piezoelectric layer. The first electrode includes fingers and a contact arm, with each finger including a first side in contact with the contact arm and two other sides parallel to one another. Portions of the piezoelectric layer are at least partially etched between the two fingers to form a recess. The fingers are spaced apart from one another by a distance W calculated according to the following equation: | 04-23-2009 |
| 20100142641 | METHOD FOR PROCESSING A DIGITAL SIGNAL IN A DIGITAL DELTA-SIGMA MODULATOR, AND DIGITAL DELTA-SIGMA MODULATOR THEREFOR - The digital delta-sigma modulator includes a signal input for receiving digital samples of N bits, and a digital filter connected to the signal input. The digital filter performs addition/subtraction and integration operations according to a redundant arithmetic coding for delivering digital filtered samples. A quantizer performs a nonexact quantization operation so as to deliver digital output samples of n bits, with n being less than N. The input of the quantizer is connected within the digital filter. | 06-10-2010 |
| 20110102224 | INTEGRATED CIRCUIT AND CORRESPONDING METHOD OF PROCESSING A MULTITYPE RADIO FREQUENCY DIGITAL SIGNAL - Integrated circuit, incorporating an electronic device (PA) comprising input means (BE) for receiving a radiofrequency digital signal (SCH), output means (BS) capable of delivering a radiofrequency analogue signal (SARF), and a processing stage coupled between the input means and the output means and comprising several processing channels (VTi) in parallel, each processing channel (VTi) including a voltage switching block (BLCi) the input of which is coupled to the input means and a transmission line (LTi) substantially of the quarter-wave type at the frequency of the radiofrequency analogue signal coupled in series between the output of the voltage switching block and the said output means. | 05-05-2011 |
| 20110205093 | LOGARITHMIC ANALOG/DIGITAL CONVERSION METHOD FOR AN ANALOG INPUT SIGNAL, AND CORRESPONDING DEVICE - A logarithmic analog to digital conversion method for an analog input signal includes a logarithmic amplification with progressive compression of the input signal delivering a sequence of several secondary analog signals. The trend of the values of at least some of the secondary signals is a function of the values of the analog input signal including regions corresponding to a linear trend of the secondary signals as a function of that of the input signal expressed in a logarithmic scale. The method also includes a comparison of at least some of the secondary signals of the sequence with a common reference signal whose value lies within each of regions, supplying a thermometric code information item, and a generation of a first digital word from the thermometric code information item. | 08-25-2011 |
