Theoretical analysis and FDTD simulation of GaAs nonlinear transmission lines

The GaAs nonlinear transmission line (NLTL), a monolithic millimeter-wave integrated circuit consisting of a high-impedance transmission line loaded by reverse-biased Schottky diodes, is studied in detail in this paper. A distributed model of the NLTL is successfully developed through the use of the...

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Bibliographic Details
Published in:IEEE transactions on microwave theory and techniques 1999-07, Vol.47 (7), p.1083-1091
Main Authors: Xudong Wang, Hwu, R.J.
Format: Article
Language:English
Subjects:
Analytical models
Circuit simulation
Computer simulation
Distributed parameter circuits
Finite difference method
Finite difference methods
Finite difference time domain method
Gallium arsenide
Gallium arsenides
Microwave theory and techniques
Microwaves
Millimeter wave integrated circuits
Nonlinearity
Schottky diodes
Time domain analysis
Transmission line theory
Transmission lines
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Summary:The GaAs nonlinear transmission line (NLTL), a monolithic millimeter-wave integrated circuit consisting of a high-impedance transmission line loaded by reverse-biased Schottky diodes, is studied in detail in this paper. A distributed model of the NLTL is successfully developed through the use of the microwave network theory. This model is more accurate than the lumped-element model that has been widely used before. The application of the NLTL for picosecond pulse generation, including shock-wave formation, is explained in detail based on the distributed model. Finally, the finite-difference time-domain (FDTD) technique is used to simulate the NLTL's for the first time. The simulation results show good agreement with the experiment results, FDTD is more accurate than SPICE in the simulation of NLTL's.
ISSN:0018-9480
1557-9670
DOI:10.1109/22.775440