| 摘要 |
<p>The invention describes a radio frequency (=RF) power amplifier (20), comprising
- a coupling array (1) comprising a plurality of nano-sized coupling elements (2; 41; 51),
wherein the coupling elements (2; 41; 51) are grouped into a number N of sub-arrays (SA 1 ...SA N ), with each sub-array (SA 1 ...SA N ) exhibiting
€¢ a specific resonance frequency (f 1 ...f N ) and
€¢ a specific attenuation
of a mechanical self-oscillation of its coupling elements (2; 41; 51),
wherein for the coupling elements (2; 41; 51) of each sub array (SA 1 ...SA N ), there is a stimulating means for stimulating a mechanical self-oscillation,
- and a signal processing unit (22) for controlling the stimulating means with stimulating pulses having a pulse form and timing calculated by the signal processing unit (22) based on an evaluation of the spectral components of an RF signal to be amplified, namely the amplitudes (C 1 ...C N ) and phases (Æ 1 ...Æ N ) at the frequencies (f 1 ...f N ) corresponding to said specific resonance frequencies. The inventive RF power amplifier provides a high efficiency and a high linearity, in particular at high RF frequencies.</p> |
