A 3 similar to 5 GHz CMOS UWB Radar Chip for Surveillance and Biometric Applications

作者：Lee Seung Jun^*; Ha Jong Ok; Jung Seung Hwan; Yoo Hyun Jin; Chun Young Hoon; Kim Wan Sik; Lee Noh Bok; Eo Yun Seong

来源：Journal of Semiconductor Technology and Science, 2011, 11(4): 238-246.

DOI：10.5573/JSTS.2011.11.4.238

• Ultra wide band (UWB)
• biometric radar
• sub-sampling
• high speed T&amp
• H
• digital UWB impulse generator

A 3-5 GHz UWB radar chip in 0.13. m CMOS process is presented in this paper. The UWB radar transceiver for surveillance and biometric applications adopts the equivalent time sampling architecture and 4-channel time interleaved samplers to relax the impractical sampling frequency and enhance the overall scanning time. The RF front end (RFFE) includes the wideband LNA and 4-way RF power splitter, and the analog signal processing part consists of the high speed track & hold (T& H) / sample & hold (S& H) and integrator. The interleaved timing clocks are generated using a delay locked loop. The UWB transmitter employs the digitally synthesized topology. The measured NF of RFFE is 9.5 dB in 3-5 GHz. And DLL timing resolution is 50 ps. The measured spectrum of UWB transmitter shows the center frequency within 3-5 GHz satisfying the FCC spectrum mask. The power consumption of receiver and transmitter are 106.5 mW and 57 mW at 1.5 V supply, respectively.

• 出版日期2011-12