Design of Transmitter for UWB Chaotic-OOK Communications

UWB Chaotic-OOK 통신을 위한 송신기 설계

  • Jeong, Moo-Il (Department of Radio Science & Engineering, Hanbat University) ;
  • Kong, Hyo-Jin (Department of Radio Science & Engineering, Hanbat University) ;
  • Lee, Chang-Suk (Department of Radio Science & Engineering, Hanbat University)
  • 정무일 (한밭대학교 전파공학과) ;
  • 공효진 (한밭대학교 전파공학과) ;
  • 이창석 (한밭대학교 전파공학과)
  • Published : 2008.03.31


Chaotic OOK modulation method can be used in LDR(Low Data Rate) UWB systems. In this paper, UWB chaotic-OOK transmitter system is designed and verified using TSMC 0.18 um CMOS process. A transmitter system is composed of Quasi-chaotic signal generator, OOK Modulator, and driving amplifier. The traditional chaotic signal generators using analog feedback method is weak to process variation. In order to solve this problem, a quasi-chaotic signal generator using digital feedback technique is get wide band signal and OOK Modulator using T-type switching structure is used to enhance the isolation characteristic. A driving amplifier has differential to single structure to avoid an external balun for low cost communication. The measured output power spectrum of the transmitter meet the FCC regulation and the result of the modulation test at data rate of 20 Kbps, 200 Kbps, 2 Mbps, and 10 Mbps is conformed to LDR UWB system. It is shown that the transmitter in this paper can be used for the UWB chaotic-OOK system.




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