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Electronically tunable pulse generator with programmable pulse repetition rate for 6.0 8.5 GHz ultra‐wideband communications
Author(s) -
Seifarth Christoph,
Heynicke Ralf G.,
Scholl Gerd
Publication year - 2008
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.23462
Subject(s) - pulse generator , baseband , electrical engineering , microwave , electronic engineering , modulation (music) , pulse position modulation , wideband , engineering , telecommunications , pulse (music) , computer science , pulse amplitude modulation , physics , jitter , bandwidth (computing) , voltage , acoustics
An ultra‐wideband (UWB) carrier based pulse generator with tunable carrier frequency for 6.0–8.5 GHz UWB communications compliant to European and United States indoor regulations is presented. Pulses with a pulsewidth of 2.5 ns are generated using D‐type flip‐flops and are upconverted by a frequency mixer and a tunable voltage controlled oscillator providing a carrier frequency of 6.6–7.9 GHz. For the generation of pulse trains, a pulse repetition rate of up to 333 MHz is realized using a programmable clock multiplier offering optional spread spectrum clocking to smooth the output spectrum. Suitable modulation formats are pulse position modulation and on‐off‐keying which can be easily implemented by changing baseband data. Measurement results in time domain and frequency domain are presented showing the functionality of the fabricated device and its conformity to European and US UWB regulations. © 2008 Wiley Periodicals, Inc. Microwave Opt Technol Lett 50: 1649–1651, 2008; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.23462