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A CMOS impulse generator for UWB wireless communication systems

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3 Author(s)
Youngkyun Jeong ; Dept. of Electr. Eng., Texas Univ. at Dallas, Richardson, TX, USA ; Sungyong Jung ; Jin Liu

A fully integrated CMOS impulse generator was designed as a part of the System-on-Chip (SOC) implementation of an Ultra-Wide-Bandwidth (UWB) wireless communication system. Three interpolation delay blocks in series and an XOR block are utilized for the pulse generation. The Gaussian Mono-pulse is generated with a RLC Band-Pass Filter (BPF), and a substrate RF inductor is utilized to avoid using off-chip components. The ideal BPF and the substrate BPF simulation results were compared to predict the actual performance of the impulse generator. The substrate BPF brings wider -3 dB bandwidth (BW), less ripple ratio, and smaller output amplitude. It operates with a center frequency of 3.27 GHz and a -3 dB BW of 3.34 GHz with an inductor value of 10 nH. The impulse generator was designed with MOS current mode logic (MCML) in the TSMC 0.18 μm CMOS process.

Published in:

Circuits and Systems, 2004. ISCAS '04. Proceedings of the 2004 International Symposium on  (Volume:4 )

Date of Conference:

23-26 May 2004