Title :
Study of the effect of various parameters on nonlinear transmission-line (NLTL) performance
Author :
Salameh, Daoud ; Linton, David
Author_Institution :
Sch. of Electr. & Electron. Eng., Queen´´s Univ., Belfast, UK
fDate :
3/1/1999 12:00:00 AM
Abstract :
Nonlinear transmission-line (NLTL) shock-wave generator performance in the presence of frequency-dependent losses is reported. The skin effect is studied using the harmonic-balance technique with the aid of the HP-MDS design database language. Measured results of a 48-section NLTL excited by a 26.6-dBm sinusoidal signal from the literature are compared with simulation with good agreement. Experimental performance of an eight-section GaAs monolithic-microwave integrated circuit NLTL is reported for 26-dBm drive conditions. Schottky diode capacitance-voltage (C-V) characteristics are computed using the Silvaco physical simulator for different doping profiles. Doping profiles are used as a parameter in NLTL design and their effect on NLTL performance is investigated. S-parameter measurements are performed for the GEC Marconi Materials Technology GaAs Schottky diode family from which the C-V characteristics are extracted and used to validate simulation. The problem of variable dynamic range is addressed and variable diode areas are used to enhance matching
Keywords :
III-V semiconductors; MMIC; S-parameters; Schottky diodes; capacitance; circuit CAD; coplanar transmission lines; coplanar waveguide components; doping profiles; gallium arsenide; integrated circuit design; losses; nonlinear network analysis; skin effect; transmission line theory; CPW; GaAs Schottky diode family; HP-MDS design database language; S-parameter measurements; Schottky diode C-V characteristics; Silvaco physical simulator; capacitance-voltage characteristics; doping profiles; eight-section GaAs MMIC line; frequency-dependent losses; harmonic-balance technique; monolithic-microwave integrated circuit; nonlinear circuits; nonlinear transmission-line performance; shock-wave generator; sinusoidal signal excitation; skin effect; Capacitance-voltage characteristics; Circuit simulation; Computational modeling; Doping profiles; Frequency; Gallium arsenide; Integrated circuit measurements; Performance loss; Schottky diodes; Transmission lines;
Journal_Title :
Microwave Theory and Techniques, IEEE Transactions on
