Patent application number | Description | Published |
20110148679 | RECONFIGURABLE BANDPASS DELTA-SIGMA MODULATOR - A delta-sigma modulator is disclosed which has a filter comprising a filter input, two LC resonators (LC | 06-23-2011 |
20120200359 | AMPLIFIER ARRANGEMENT - An amplifier arrangement with an amplifier arrangement input and an amplifier arrangement output is disclosed. The amplifier arrangement comprises a first transistor and a first ballast resistance, wherein the first ballast resistance connects a first transistor base of the first transistor to a common base terminal at least one second transistor and at least one second ballast resistance, wherein the at least one second ballast resistance connects a second transistor base of the at least second transistor to the common base terminal; and a feedback device comprising a feedback input terminal for sensing at least a base voltage of the first transistor and further comprising a feedback output terminal that is connected to the common base terminal. | 08-09-2012 |
20120200360 | POWER AMPLIFIER WITH DYNAMICALLY ADDED SUPPLY VOLTAGES - An amplifier for amplifying a radio signal to a defined power output level is presented, wherein the amplifier comprises an amplifier input port, an amplifier output port, a first transistor for amplifying the radio signal received at a first transistor control input, wherein a first transistor output of the first transistor is supplied by a first power source; a at least second transistor for supplying the first transistor from a at least second power supply source. The at least second power supply source is added by the at least second transistor as a function of the power output level of the amplifier. | 08-09-2012 |
20120288035 | BASE-BAND TO RADIO FREQUENCY UP-CONVERTER - A base band to frequency up-converter is described wherein the base band to frequency up-converter comprises a first input for receiving a first base band signal of first base band samples and a second input for receiving a second base band signal of second base band samples and an output for providing up-converted radio signal samples. The base-band to radio frequency up-converter further comprises a phase converter for converting the first base band signal of first base band samples and the second base band signal of second base band samples into a first intermediate signal of first intermediate samples, a second intermediate signal of second intermediate samples, and a third intermediate signal of third intermediate samples. The intermediate samples are then up-converted into radio signal samples. | 11-15-2012 |
20130027272 | DOHERTY AMPLIFIER ARRANGEMENT - A Doherty amplifier ( | 01-31-2013 |
20130099949 | DELTA-SIGMA MODULATOR WITH FEEDBACK SIGNAL MODIFICATION - A delta-sigma modulator ( | 04-25-2013 |
20140125505 | BASE-BAND TO RADIO FREQUENCY UP-CONVERTER - A base band to frequency up-converter is described wherein the base band to frequency up-converter comprises a first input for receiving a first base band signal of first base band samples and a second input for receiving a second base band signal of second base band samples and an output for providing up-converted radio signal samples. The base-band to radio frequency up-converter further comprises a phase converter for converting the first base band signal of first base band samples and the second base band signal of second base band samples into a first intermediate signal of first intermediate samples, a second intermediate signal of second intermediate samples, and a third intermediate signal of third intermediate samples. The intermediate samples are then up-converted into radio signal samples. | 05-08-2014 |
20140333375 | Method and circuit for driving a switch-mode amplifier array - A circuit arrangement for generating the drive signals for at least three radio frequency switch-mode amplifiers is described. The circuit arrangement comprises at least two switch-mode amplifiers performing RF out-phasing, and at low RF power level, the average switching frequency—averaged over time and over all switch-mode amplifiers—is less than the radio frequency. | 11-13-2014 |
20140333378 | Circuit arrangement for generating a radio frequency signal - A circuit arrangement for generating a radio frequency signal is described. The circuit arrangement comprises an RF output port, a shunt capacitor connected to the RF output port, at least two switch-mode amplifiers, each switch-mode amplifier comprising a switch-mode amplifier output port and a series inductive circuit element connected between the switch-mode amplifier output port and the RF output port. | 11-13-2014 |