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An IM3 cancellation technique is proposed and implemented in a 65nm CMOS 0.5–2.5GHz FTNC (frequency translational noise-cancelling) receiver with a wideband auxiliary path which also offers wideband interferer awareness. It achieves 8.8MHz BB BW, 40dB conversion gain, 3.3dB NF, +5dBm OB-IIP3, and −6.5dBm OB-B1dB without IM3 cancellation while consuming 36mW at 1.2V. Using IM3 cancellation, the equivalent...
Next-generation (Next-G) wireless terminals need to sense their ambient and adapt to the diverse deployment scenario requirements on the fly while leveraging technology scaling. Several key circuit and system innovations are required to make the realization of this vision possible. We discuss how compressed sampling can be exploited to design a rapid, GHz-wide and energy-efficient interferer detector...
A field-programmable noise-canceling wide-band receiver front end with high performance LNTAs is presented. The common-source (CS) and common-gate (CG) LNTAs are split into several cells whose bias point can be individually programmed in class AB or C yielding a highly linear hybrid class-AB-C LNTA. The 40nm LP CMOS receiver prototype can be programmed on the fly to adapt to different RF environments;...
A field-programmable (FP) low-noise amplifier (LNA) with interferer-reflecting (IR) loop is introduced. The user can program its gain, noise figure, linearity and power consumption during operation. The IR loop uses a frequency-selective shunt-shunt feedback around the noise-canceling LNA to reduce the input impedance out of band and to suppress the input voltage swing created by blockers. A notch...
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