Guided Radar And Wide Band RFIC Tranceiver Design

Guided radar (Guidar), which uses buried leaky coaxial cables as sensors, has been commercially available since 1970's. With the advancement of radar signal processing technology, especially the advent of Ultra Wide Band (UWB) technology which is dramatically changing radar signal processing, guided radars are finding increasing use in security area. Compared with other technologies, Guidar has superior detection and false alarm performance, and has lower available vulnerabilities to defeat. In addition, Guidar has the ability to precisely locate the intruders. Nowadays, it has been a hot spot in the perimeter intrusion detection products.This dissertation first presented the background of Guidar technology, then described the scheme of a Guidar system using the direct-conversion structure. In the description of the system design two parts were included, hardware and software. Hardware design included the circuit design of tranceiver front-end and the digital baseband, while software design focused on the modulation and demodulation in a FPGA processor. In addition, a Guidar system with 40MHz carrier frequency was implemented.In the next generation of radio access network, leaky coaxial cable could be strong candidate of common antenna by virtue of its large bandwidth. Some applications such as antenna-remoting, wireless positioning and spatially selective delivery are interesting. A wideband RF transceiver fabricated in SMIC 0.18um CMOS technology was proposed in this dissertation, it would be suitable for the leaky coaxial cable network. In addition, the chip presented could also be used in the wireless sensing application such as non-contact vital sign detection(VSD), microwave ranging, etc.