Patent ID: 6888416

Claim:
An oscillator/mixer circuit comprising: an oscillator circuit, and a switching mixer circuit, in which the oscillator circuit and the switching mixer circuit have the same components to some extent, in which the switching mixer circuit has at least a first switch element having an input, an output and a control input, a second switch element having an input, an output and a control input and a third switch element having an output and a control in input, where the output of the first switch element is coupled to the control input of the second switch element via a first feedback element, where the output of the second switch element is coupled to the control input of the first switch element via a second feedback element, where the feedback elements are set up such that the oscillator operation of the oscillator/mixer circuit is made possible, where the control input of the third switch element is connected to a mixing signal input, to which a signal to be mixed can be applied, where the output of the third switch element is connected to the input of the first switch element and the input of the second switch element.