Title :
Transient propagation in lossy coplanar waveguides
Author :
Liao, Chun-Lin ; Tu, Yu-Ming ; Ke, Jeng-Yi ; Chen, Chun Hsiung
Author_Institution :
Dept. of Electr. Eng., Nat. Taiwan Univ., Taipei, Taiwan
fDate :
12/1/1996 12:00:00 AM
Abstract :
Propagation of picosecond Gaussian and rectangular pulses along a lossy coplanar waveguide is investigated in detail. To this end, a new empirical formula for attenuation constant is proposed for discussing the conductor and leakage losses associated with the coplanar waveguide in which the thickness and conductivity of signal strip and ground planes are finite. This formula is obtained by comparing the results by the modified spectral-domain approach with those by the previous empirical formulas. Based on this new empirical formula, an efficient time-domain propagation model is established and applied to analyze the transient characteristics of Gaussian and rectangular pulses propagated along a lossy coplanar waveguide. In particular, the transient propagated pulses calculated by different empirical formulas are discussed and compared with those of the experimental data
Keywords :
coplanar waveguides; electromagnetic wave propagation; losses; spectral-domain analysis; time-domain analysis; waveguide theory; attenuation constant; conductor losses; ground planes; leakage losses; lossy coplanar waveguides; modified spectral-domain approach; picosecond Gaussian pulses; picosecond rectangular pulses; signal strip; time-domain propagation model; transient characteristics; Attenuation; Conductivity; Conductors; Coplanar waveguides; Planar waveguides; Propagation losses; Rectangular waveguides; Strips; Time domain analysis; Transient analysis;
Journal_Title :
Microwave Theory and Techniques, IEEE Transactions on
