Renesas Electronics Corporation

Imec

Yoshikazu Furuta

Masakazu Mizokami

Tomohiro Sano

Kenji Toyota

Mark Ingels

Mark Maria Albert Ingels

A semiconductor apparatus, includes a common mode detector circuit that receives alternating current (AC) signals in a common mode.

Semiconductor apparatus and radio communication apparatus

A semiconductor apparatus includes a common mode detector circuit that receives differential alternating current (AC) signal; and a detector circuit.

A semiconductor apparatus that can detect the amplitude level of harmonics is provided. A semiconductor apparatus includes a common mode detector circuit that detects alternating current (AC) signals in a common mode, and a detector circuit that detects the amplitude level of an even-order harmonic output from the common mode detector circuit. The common mode detector circuit combines the AC signals being differential signals in common mode, thereby cancelling out odd-order harmonics to obtain direct current and even-order harmonics. The detector circuit detects the amplitude level of the even-order harmonics from a signal obtained by the common mode detection, and outputs the detected amplitude level.

A circuit for reducing counter-intermodulation in a modulated signal caused by an oscillator frequency and harmonics of a baseband signal is disclosed. The circuit comprises a first and a second baseband section arranged for generating a first and a second version of a baseband signal, the second version being phase shifted with respect to the first version. The circuit further comprises three signal paths comprising mixers for multiplication of the first and second version of the baseband signal with a local oscillator signal, so that three upconverted signals with rotated phase with respect to each other are obtained, and arranged for applying a scaling with a scaling factor corresponding to the rotated phases. The circuit further comprises a combination unit arranged for combining the three upconverted signals.

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Tokyo, Japan

Yoshikazu Furuta