Low Power Uwb CMOS Radar Sensors

ISBN-13: 9781402084096 / Angielski / Twarda / 2008 / 235 str.

Nuno Paulino; Joao Goes; Adolfo Steiger Garaao

Opis

Low Power UWB CMOS Radar Sensors deals with the problem of designing low cost CMOS radar sensors. The radar sensor uses UWB signals in order to obtain a reasonable target separation capability, while maintaining a maximum signal frequency below 2 GHz. This maximum frequency value is well within the reach of current CMOS technologies. The use of UWB signals means that most of the methodologies used in the design of circuits and systems that process narrow band signals, can no longer be applied. Low Power UWB CMOS Radar Sensors provides an analysis between the interaction of UWB signals, the antennas and the processing circuits. This analysis leads to some interesting conclusions on the types of antennas and types of circuits that should be used. A methodology to compare the noise performance of UWB processing circuits is also derived. This methodology is used to analyze and design the constituting circuits of the radar transceiver. In order to validate the design methodology a CMOS prototype is designed and experimentally evaluated.

Spis treści

1 Introduction.

2 UWB Signals and Systems. 2.1 A brief history of UWB Systems and their applications. 2.2 Spectrum and power of UWB signals. 2.3 Antennas for UWB signals. References.

3 UWB RADAR Receiver Architecture. 3.1 UWB RADAR Systems. 3.2 UWB Radar Equation. 3.3 UWB receiver architecture. 3.4 Receiver Specifications. References.

4 Digitally Programmable Delay. 4.1 Architecture. 4.2 High Level Analysis and Design. 4.3 Electrical Design. References.

5 Transceiver Prototype and Experimental Results. 5.1 Transceiver circuit. 5.2 Experimental Results. References.

6 Conclusions.

Appendix A: Echo Signals From Moving Targets. Appendix B: Gain and Offset Errors in the S&H due to the MOS Switches. Appendix C: Sigma Delta Modulator. Appendix D: Bond-Wire Parasitic Effects. Appendix E: Oscilloscope Characterization.

Index.