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An N ‐bit digitally variable ultra‐wideband pulse generator for GPR and UWB applications
Author(s) -
Yilmaz Sertac,
Tekin Ibrahim
Publication year - 2006
Publication title -
microwave and optical technology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 76
eISSN - 1098-2760
pISSN - 0895-2477
DOI - 10.1002/mop.21620
Subject(s) - microstrip , pulse generator , microwave , transmission line , diode , ultra wideband , pin diode , pulse (music) , pulse duration , electrical engineering , generator (circuit theory) , electric power transmission , electronic engineering , enhanced data rates for gsm evolution , electronic circuit , materials science , optoelectronics , engineering , optics , telecommunications , physics , power (physics) , voltage , laser , quantum mechanics
This paper presents a low‐cost ultra‐wideband (UWB) pulse generator that can vary the pulse duration digitally by using a step‐recovery diode (SRD), microstrip transmission lines, and PIN diodes. First, a sharp edge is generated by using SRD circuitry. Then a pulse is formed from the sharp edge through the use of transmission lines and the PIN diodes. Based on the number of transmission lines (N), the duration of the pulse can be varied in 2 N steps. The UWB pulse generator circuits are implemented on an FR‐4 substrate using microstrip‐line technology and UWB pulses with durations of 550 to 2400 psec are measured. © 2006 Wiley Periodicals, Inc. Microwave Opt Technol Lett 48: 1334–1339, 2006; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.21620