摘要:
The invention relates to a radio device (100) for transmitting and/or receiving radio frequency, RF, signals, wherein said radio device (100) comprises a data exchange interface (110) which is configured to exchange data with a base station (200) for a cellular communications network by means of at least one of: a. a public and/or private communications network (300), b. a, preferably local, serial and/or parallel data transmission interface (120).
摘要:
The present invention relates to an envelope modulator (100, 100a, 100b, 100c), particularly for a polar transmitter (1000), wherein said envelope modulator (100) is configured to receive an amplitude signal (A, u) and a phase-modulated carrier signal (f_c_mod, fcm'), and to output for at least one clock cycle (T_c) of said phase-modulated carrier signal (f_c_mod, fcm') an output pulse (p1, p2, p3), wherein a pulse width of said output pulse (p1, p2, p3) is determined depending on said amplitude signal (A) and on a feedback signal (fb) derived from said amplitude signal (A).
摘要:
The invention relates to a digital predistortion device (100) for applying a predistortion to a signal that is to be processed by a power amplifier (200), wherein said digital predistortion device (100) comprises at least two predistortion branches (111, 112), wherein each of said predistortion branches (111, 112) is configured to apply a predistortion to an input signal (S1, S2) of said predistortion branch (111, 112) according to a predistortion function (f_DPD1, f_DPD2) associated with said predistortion branch (111, 112), wherein a predistortion function (f_DPD1, f_DPD2) of at least one of said predistortion branches (111, 112) depends on the input signals (S1, S2) of at least two of said predistortion branches (111, 112).
摘要:
The invention relates to a method of operating a control unit (100) for controlling an operation of a power amplifier (PA), wherein said power amplifier (PA) is configured to amplify a radio frequency, RF, signal (S RF ) that is obtained from at least two input signals (S1, S2), wherein a control signal (CTRL) for influencing a supply voltage (Vsup) of said power amplifier (PA) is determined by digital signal processing means (DSP) of said control unit (100) depending on said at least two input signals (S1, S2).