A 12.5-Gb/s Pulse Modulator with 6.5-ps FWHM Using 0.1-μm InP HEMTs for Ultra-Wideband Impulse Radio Communications

We developed an ON/OFF pulse modulator IC using 0.1-mum-gate-length InP HEMTs for ultra-wideband impulse radio (UWB-IR) communications systems. The IC generated extremely short pulses whose full width at half maximum (FWHM) were 6.5 ps. Furthermore, our new circuit architecture that retimes output pulses at both rising and falling edges made the IC robust against timing fluctuations or jitter. The output pulses had very small jitters of 256 fs rms and 1.3 ps p-p and thus had little degradation from intersymbol interference (ISI) when a 231-1 length pseudo random bit stream (PRBS) at a bit rate of 12.5 Gb/s was input. The pulse modulator can be used to construct an ON/OFF keying transmitter based on UWB-IR architecture that sends more than 10 Gb/s of data in the W-band (75-110 GHz) and above.

[1]  K. Hamaguchi,et al.  Technology development of short range ultrawide-band radar system , 2004, 2004 International Workshop on Ultra Wideband Systems Joint with Conference on Ultra Wideband Systems and Technologies. Joint UWBST & IWUWBS 2004 (IEEE Cat. No.04EX812).

[2]  T. Morimoto,et al.  Wireless uncompressed-HDTV-signal transmission system utilizing compact 60-GHz-band transmitter and receiver , 2005, IEEE MTT-S International Microwave Symposium Digest, 2005..

[3]  Tatsuya Hirose,et al.  A 7.6-ps Pulse Generator Using 0.13-μm InP-based HEMTs for Ultra Wide-Band Impulse Radio Systems , 2007 .

[4]  D. Robertson,et al.  Technologies for sub-ns pulse coherent mm-wave radar , 2006, 2006 European Radar Conference.

[5]  Y. Nakasha,et al.  RF Chipset for Impulse UWB Radar Using 0.13-$\mu{\hbox {m}}$ InP-HEMT Technology , 2006, IEEE Transactions on Microwave Theory and Techniques.

[6]  K. Hamaguchi,et al.  An RF Chipset for Impulse Radio UWB Using 0.13 μm InP-HEMT Technology , 2006, 2006 IEEE MTT-S International Microwave Symposium Digest.

[7]  T. Suzuki,et al.  A novel 50-Gbit/s NRZ-RZ converter with retiming function using InP HEMT technology , 2005, IEEE Compound Semiconductor Integrated Circuit Symposium, 2005. CSIC '05..

[8]  T. Suzuki,et al.  A W-band wavelet generator using 0.13-μm InP HEMTs for multi-gigabit communications based on ultra-wideband impulse radio , 2008, 2008 IEEE MTT-S International Microwave Symposium Digest.

[9]  R.J. Fontana,et al.  Recent system applications of short-pulse ultra-wideband (UWB) technology , 2004, IEEE Transactions on Microwave Theory and Techniques.

[10]  C. Loyez,et al.  UWB-IR transceiver for millimeter wave WLAN , 2006, IECON 2006 - 32nd Annual Conference on IEEE Industrial Electronics.

[11]  S. Kato.  R&D on Millimeter Wave (60 GHz) Systems and IEEE Standardization Updates , 2007, 2007 IEEE International Conference on Ultra-Wideband.