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Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
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TY - JOUR
T1 - Harmonic Klystron Frequency Converter
AU - Leggieri, Alberto
AU - Behtouei, Mostafa
AU - Burt, Graeme
AU - Dolgashev, Valery
AU - Paolo, Franco Di
AU - Spataro, Bruno
PY - 2025/3/31
Y1 - 2025/3/31
N2 - A new principle for the design of frequency converters, operating at significantly higher power and efficiency than previous devices, is described in this article. The presented solution is implemented as a particular klystron topology for which a new design criterion is formulated through analytical expressions and a specific design procedure. The described frequency multiplier is suitable for telecommunications, nonlethal weapons, or scientific and medical particle accelerators, where the most interested exploitation is in the field of high gradient particle acceleration and free electron laser (FEL) devices for which no current sources meet the required performance. The frequency converter replaces all the low-level circuitry needed for frequency multiplication, representing a less expensive alternative. The presented structure can offer efficiencies in the range of 50%–60% in the Ka-band with power levels of 20–30 MW without phase noise, sideband generation, jitter, or chirp effects. The proposed principle is also applicable to other bands or power ranges.
AB - A new principle for the design of frequency converters, operating at significantly higher power and efficiency than previous devices, is described in this article. The presented solution is implemented as a particular klystron topology for which a new design criterion is formulated through analytical expressions and a specific design procedure. The described frequency multiplier is suitable for telecommunications, nonlethal weapons, or scientific and medical particle accelerators, where the most interested exploitation is in the field of high gradient particle acceleration and free electron laser (FEL) devices for which no current sources meet the required performance. The frequency converter replaces all the low-level circuitry needed for frequency multiplication, representing a less expensive alternative. The presented structure can offer efficiencies in the range of 50%–60% in the Ka-band with power levels of 20–30 MW without phase noise, sideband generation, jitter, or chirp effects. The proposed principle is also applicable to other bands or power ranges.
U2 - 10.1109/ted.2025.3527434
DO - 10.1109/ted.2025.3527434
M3 - Journal article
VL - 72
SP - 1396
EP - 1403
JO - IEEE Transactions on Electron Devices
JF - IEEE Transactions on Electron Devices
SN - 0018-9383
IS - 3
ER -