Balanced mixer with calibration of load impedances
AssigneeST-Ericsson SA
InventorPhilippe Barre
Life of this patent
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Abstract
A calibration device is coupled to a balanced circuit device including first and second outputs provided with first and second load impedances. The calibration device includes an adjusting circuit to adjust the first and second load impedances into a load imbalance for linearization. A coupling circuit is inserted between the adjusting circuit and the first and second outputs to selectively couple the adjusting circuit to one of the first and second outputs, so that the adjusting circuit is coupled in parallel either to the first load impedance or to the second load impedance.
Claims17
A calibration device for a balanced circuit device comprising first and second outputs respectively provided with first and second load impedances, said calibration device comprising an adjusting circuit to adjust said first and second load impedances into a load imbalance for the purpose of linearization, comprising a coupling circuit between said adjusting circuit and said first and second outputs to selectively couple said adjusting circuit to only a chosen one of said first and second outputs, so that said adjusting circuit is coupled in parallel either to said first load impedance or to said second load impedance.
A balanced circuit device comprising a calibration device comprising first and second outputs respectively provided with first and second load impedances, said calibration device comprising an adjusting circuit to adjust said first and second load impedances into a load imbalance for the purpose of linearization, comprising a coupling circuit between said adjusting circuit and said first and second outputs to selectively couple said adjusting circuit to only a chosen one of said first and second outputs, so that said adjusting circuit is coupled in parallel either to said first load impedance or to said second load impedance.
A receiver and/or transmitter device, comprising a balanced circuit device comprising a calibration device comprising first and second outputs respectively provided with first and second load impedances, said calibration device comprising an adjusting circuit to adjust said first and second load impedances into a load imbalance for the purpose of linearization, comprising a coupling circuit between said adjusting circuit and said first and second outputs to selectively couple said adjusting circuit to only a chosen one of said first and second outputs, so that said adjusting circuit is coupled in parallel either to said first load impedance or to said second load impedance.
An integrated circuit, comprising a balanced circuit device comprising a calibration device comprising first and second outputs respectively provided with first and second load impedances, said calibration device comprising an adjusting circuit to adjust said first and second load impedances into a load imbalance for the purpose of linearization, comprising a coupling circuit between said adjusting circuit and said first and second outputs to selectively couple said adjusting circuit to only a chosen one of said first and second outputs, so that said adjusting circuit is coupled in parallel either to said first load impedance or to said second load impedance.
Dependencies are inferred from the claim text.