Stephane Mallegol

Microwave (De) Multiplexer for Ultra-Wideband (UWB) Non-Coherent High Data Rates Transceiver

The following topics are dealt with: low-loss planar multiplexer/demultiplexers; ultra-wideband high data rate (UWB HDR) transceivers; impulse radio; microstrip passive quadriplexers; 2nd order filters and open-loop resonators

Performance of a simple architecture of an analog CMOS detector for MB-UWB receiver

This paper presents an implementation study of an analog CMOS pulse detector. The detector includes four stages: squarer, current amplification, an integrator and a sample and hold. The main objective is to realize the pulse detection function with less complexity design, low power consumption and low mass fabrication cost. Also, it must operates in the 3.1–10.6 GHz UWB band for a multi-band impulse radio receiver. The noise performance of the detector is studied. Transistors mismatches and imperfection of the current amplifier are theoretically studied in order to evaluate their effects on the global circuit performances. CADENCEs spectre simulation results in 0.35 µm CMOS technology are presented to validate this approach. Monte-Carlo simulation results are equally given in order to enforce the analytical studies. The proposed detector consumes only 2 mW with a ±1.8 V supply.

A non-coherent multi-band IR-UWB HDR transceiver based on energy detection

This paper presents an architecture of an IR-UWB MB-OOK non-coherent transceiver. Channel measurements performed for both LOS and NLOS short-range communications in real indoor environment based on this realized prototype are provided. A comparison between the use of directional and omnidirectional antennas at both emission and reception is presented. Then, an estimation of the data rate of the communicating system is given. Also, an implementation study of an analog CMOS pulse detector is presented. The main objective is to realize the pulse detection function with less complexity design, low power consumption and low mass fabrication cost. Also, it must operates in the 3.1–10.6 GHz UWB band for a multi-band impulse radio receiver. The noise performance of the detector is studied. CADENCEs spectre simulation results in 0.35 µm CMOS technology are presented to validate this approach. The proposed detector consumes only 2 mW with a ±1.8 V supply.

Performance of a low-power multi-band IR-UWB transceiver based on energy detection

This paper presents an architecture of a low power non-coherent multi-band IR-UWB transceiver. The proposed system was studied and a prototype was realized. Also, it concerns with the study of the performance and a future implementation of such a system based on energy detection. Channel measurements performed in both LOS and NLOS short-range communications in real indoor environment are provided. Finally, the performance of a communicating system based on energy detection and a data rate evaluation are given.

A multi-band IR-UWB HDR transceiver: architecture and indoor channel measurements

This paper presents an architecture of an IR-UWB MB-OOK non-coherent transceiver realized at Mitsubishi Electric. Channel measurements in real indoor environment based on this realized prototype are provided. The different components of this transceiver are described. A comparison between the use of directional and omnidirectional antennas at both emission and reception is presented. Then, a data rate estimation of the communicating system is given. Measurements are performed for both LOS and NLOS short-range indoor communications.