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International audienceMany technological bottlenecks prevent from realizing a software radio (SR) mobile terminal. The old way of building radio architectures is now over because a single handled terminal has to address various communication standards. This paper exposes a SR receiver: a sampled analog signal processor (SASP) is designed to perform downconversion and channel presorting. The idea is to process analog voltage samples in order to recover in baseband any RF signal emitted from 0 to 5$~$GHz. An analog fast Fourier transform achieves both frequency shifting and filtering. An experimental demonstrator of the SASP using 65$~$nm CMOS technology from STMicroelectronics is here presented and measured. It validates the concept of a new SR receiver with the design of a demonstrator which runs at 1.2 GHz consuming 389 mW

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Abstract-The Software-Defined Radio (SDR) concept aims at designing a re-configurable radio architecture accepting all cellular or non-cellular standards working in the 0-5 GHz frequency range. Some technical challenges have to be solved in order to address this concept. A fully digital SDR system implying an A/D conversion close to the antenna is not feasible in the case of mobile terminal. This paper presents the design of an Analog Processor which process RF signal in order to select and convert into digital only the desired RF signal envelope. It uses the principle of a Fast Fourier Transform (FFT) to carry out basic analog functions with high accuracy at a low power consumption. Schematic and Post Layout Simulations are exhibited. Estimated die area and power consumption are numbered.Index Terms-analog signal processing, software-defined radio, cognitive radio, sampled analog signal processor.

Abstract-This paper presents the implementation of a miniaturized wireless blood pressure sensor interface. The system uses capacitive coupling in order to transmit the data, as well as wireless inductive powering. Designed for a bit length of 6.4 μs, the average power consumption of the device has been measured to be 20.5 μW and 2.85 mW in air and phantom material, respectively. The miniaturized sensor interface circuit consists of two plates with a diameter of 2.5 cm, which are connected by means of a thin wire; the device's maximum thickness is 5 mm.Index Terms-Capacitive coupling, inductive powering, wireless implantable sensor interface.

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