Back to results
US 8,552,906 B2Granted
Method and circuit for operating a mixer
OwnerErich Kolmhofer, Dietmar Kissinger +1inventors
InventorsErich Kolmhofer, Dietmar Kissinger, Florian Starzer
Life of this patent
Estimating the term…
Abstract
A mixer for mixing a received signal and a local oscillator signal is provided. The local oscillator signal is modulated by means of a modulation signal and the modulated local oscillator signal is injected into the received signal.
Claims25
A method for operating a mixer configured to mix a local oscillator signal and a received signal, wherein the mixer is tested by modulating the local oscillator signal by means of a modulation signal and injecting the modulated local oscillator signal into the path of the received signal.
A circuit arrangement having:
- a mixer configured to mix a received signal and a local oscillator signal,
- a modulator with a signal input for receiving the local oscillator signal, a modulation input for receiving a modulation signal and an output, and
- a coupler which is coupled to a path for the received signal and to the output of the modulator such that a signal at the output of the modulator can be injected into the path for the received signal.
Dependencies are inferred from the claim text.