Theoretical Analysis of RF Pulse Termination in Nonlinear Transmission Lines

Nonlinear transmission lines (NLTLs) are passive networks with the capability of modulating baseband pulses. These networks are used for generating RF pulses at high-power levels. NLTLs have a unique performance in high-power RF pulse generation among all the generators based on the solid-state tech...

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Bibliographic Details
Published in:IEEE transactions on microwave theory and techniques 2018-11, Vol.66 (11), p.4757-4764
Main Authors: Samizadeh Nikoo, Mohammad, Hashemi, Seyed Morad-Ali, Farzaneh, Forouhar
Format: Article
Language:English
Subjects:
Capacitors
Generators
Microwave theory and techniques
Nonlinear transmission lines (NLTLs)
optimal load
Power transmission lines
Pulse propagation
Radio frequency
Resistance
RF power
RF pulse generation
Solitons
Transmission lines
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Summary:Nonlinear transmission lines (NLTLs) are passive networks with the capability of modulating baseband pulses. These networks are used for generating RF pulses at high-power levels. NLTLs have a unique performance in high-power RF pulse generation among all the generators based on the solid-state technology. A high-power rectangular pulse is injected to the line, gradually evolved into an oscillatory pulse while propagating through the network, and finally, in the form of a high-power RF pulse, is delivered to the load. Properly terminating an NLTL, in order to transfer the maximum available RF power to the load, is an important problem. In this paper, an accurate analysis is presented, which gives a closed-form formula for the output RF power in lossy NLTLs. Using this analysis, optimal resistive terminating load for RF applications of NLTLs is extracted. The output central frequency is also investigated in this paper. All the obtained theoretical results are verified by SPICE simulations and measurements in two implemented NLTLs.
ISSN:0018-9480
1557-9670
DOI:10.1109/TMTT.2018.2865952