Importance

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Abstract

According to an aspect, there is provided a single-ended-to-differential complementary metal-oxide-semiconductor, SE2D CMOS, transconductance amplifier for a radio receiver. The SE2D CMOS transconductance amplifier comprises an input for receiving a radio frequency signal, first common-source n-type metal-oxide-semiconductor. CS NMOS (M₁), and common-source p-type metal-oxide-semiconductor, CS PMOS, transistors (M₅), second CS NMOS (M₂) and CS PMOS (M₆) transistors, a cross-coupled cascode stage for adjusting balance of the radio frequency currents outputted by the first (M₁) and second (M₂) CS NMOS transistors and a differential output. The first (M₁) and second (M₂) CS NMOS transistors have substantially equal transconductances and the first (M₅) and second (M₆) CS PMOS transistors have substantially equal transconductances. The first and second cross-coupled cascode NMOS transistors have substantially equal transconductances.

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First Claim