Radio receiver
AssigneeTelfunken Electronic GmbH
InventorHeinz Rinderle
Life of this patent
Estimating the term…
Abstract
In a radio receiver in which the received signal is converted by mixing into an intermediate frequency signal and/or a baseband signal, and in which an apparatus is provided which generates an intermediate frequency signal and/or baseband signal and derives therefrom a control signal for suppression or reduction of interfering disturbances, the signal fed to the apparatus is distorted in the apparatus in such a way that the signal distortion effected in the apparatus is greater than the distortion to which the signal fed to the receiver is subjected in the receiving section of the receiver.
Claims33
A radio receiver for receiving an input signal in a first frequency range, which input signal contains a desired signal and undesired disturbance signals, said receiver comprising:
- a receiving section including an input stage for receiving the input signal and a first mixer connected to said input stage for converting the input signal into an output signal in a second frequency range which is different than the first frequency range;
- and
- apparatus including:
- signal distortion means connected for generating a signal which is a distorted version of the input signal having a degree of distortion greater than that of the output signal;
- signal deriving means connected to said signal distortion means for deriving a control signal from the distorted signal;
- and signal conducting means connected for supplying the control signal to said input stage of said receiving section for varying the amplitude of the input signal in a manner to at least reduce the interference of the disturbance signals contained in the input signal.
Dependencies are inferred from the claim text.