| 摘要 |
<p>A signal processing element for a high frequency application for minimising distortion introduced to an input signal by a main amplifier. The distortion generated in the main amplifier is present in a return signal originating from the main amplifier input and also in a main signal originating from the main amplifier output. The return signal is isolated from the input signal to form an error signal and then magnitude-phase conditioned. A comparison of the main signal and the error signal at a coupler results in a linearised output signal with any intermodulation products suppressed. Alternatively, the amplifier can be replaced by other non-linear radio frequency devices, for example, a mixer or a gain/phase controller.</p> |
