Circuit for changing a frequency
AssigneeATMEL Germany GmbH
InventorReinhard Reimann
Life of this patent
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Abstract
A circuit is provided for multiplying a frequency by a cascade formed of a transadmittance having a transfer characteristic and a transimpedance having a transfer characteristic. The transadmittance includes two terminals for a signal of a first frequency and the transimpedance includes two terminals for a signal of a second frequency. A transfer characteristic of the transimpedance is steeper than a transfer characteristic of the transadmittance, and a modulation region of the transadmittance is larger than a modulation region of the transimpedance.
Claims15
A frequency multiplying circuit for multiplying a first frequency, the circuit comprising:
- a transadmittance portion having a first transfer characteristic, the transadmittance portion having two input terminals for a signal of said first frequency;
- and a transimpedance portion having a second transfer characteristic, the transimpedance portion having two output terminals for a signal of a second frequency higher than the first frequency as an output of said multiplying circuit, wherein a transfer characteristic of the transimpedance portion is steeper than a transfer characteristic of the transadmittance portion, and wherein a modulation range of the transadmittance portion is greater than a modulation range of the transimpedance portion.
A frequency multiplying circuit for multiplying a first frequency, the circuit comprising:
- a transadmittance portion having a voltage-current transfer characteristic, the transadmittance portion having two input terminals for a signal of said first frequency;
- and a transimpedance portion having a current-voltage transfer characteristic, the transimpedance portion having two output terminals for a signal of a second frequency, which is higher than said first frequency, and which is output from said multiplying circuit, wherein a modulation range of the transadmittance portion is greater than a modulation range of the transimpedance portion.
Dependencies are inferred from the claim text.