TY - GEN
T1 - Accurate Characterization of Microstrip Filter and Hybrid-Ring Coupler via an Improved TLM Method using Variable and Curved Meshes
AU - Isele, B.
AU - Bender, H.
AU - Weigel, R.
AU - Hausner, J.
AU - Russer, P.
N1 - Publisher Copyright:
© 1991 IEEE.
PY - 1991
Y1 - 1991
N2 - A microstrip circuit design tool based on the two-dimensional transmission-line matrix (2D-TLM) method is described. The TLM algorithm described in this paper incorporates variable and curved discretization meshes and fast Fourier transform (FFT) with zero-padding. Numerical results have been computed for two planar configurations, an 11th order low-pass filter with a design cut-off frequency of 6.6 GHz, and a four-port 3 dB hybrid-ring coupler with a design center frequency of 12 GHz. These circuits were fabricated in hardboard thin-film technology (ϵ = 9.9), and measurements made with an HP8510 network analyzer were compared with our TLM results, other theoretical analysis, and commercial software data. We found that the 2D-TLM results are in close agreement with generalized scattering matrix analysis and with experimental results.
AB - A microstrip circuit design tool based on the two-dimensional transmission-line matrix (2D-TLM) method is described. The TLM algorithm described in this paper incorporates variable and curved discretization meshes and fast Fourier transform (FFT) with zero-padding. Numerical results have been computed for two planar configurations, an 11th order low-pass filter with a design cut-off frequency of 6.6 GHz, and a four-port 3 dB hybrid-ring coupler with a design center frequency of 12 GHz. These circuits were fabricated in hardboard thin-film technology (ϵ = 9.9), and measurements made with an HP8510 network analyzer were compared with our TLM results, other theoretical analysis, and commercial software data. We found that the 2D-TLM results are in close agreement with generalized scattering matrix analysis and with experimental results.
UR - http://www.scopus.com/inward/record.url?scp=0026365776&partnerID=8YFLogxK
U2 - 10.1109/EUMA.1991.336452
DO - 10.1109/EUMA.1991.336452
M3 - Conference contribution
AN - SCOPUS:0026365776
T3 - 1991 21st European Microwave Conference
SP - 315
EP - 320
BT - 1991 21st European Microwave Conference
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 21st European Microwave Conference, EuMC 1991
Y2 - 9 September 1991 through 12 September 1991
ER -