diff options
Diffstat (limited to 'Windows/spice/examples/TransmissionLines/cpl4_txl_2_line.sp')
| -rw-r--r-- | Windows/spice/examples/TransmissionLines/cpl4_txl_2_line.sp | 378 |
1 files changed, 378 insertions, 0 deletions
diff --git a/Windows/spice/examples/TransmissionLines/cpl4_txl_2_line.sp b/Windows/spice/examples/TransmissionLines/cpl4_txl_2_line.sp new file mode 100644 index 00000000..986c9b63 --- /dev/null +++ b/Windows/spice/examples/TransmissionLines/cpl4_txl_2_line.sp @@ -0,0 +1,378 @@ +BJTdriver -- 2in st. lin -- 20in coupled line CPL -- 2in st line -- DiodeCircuit + +* This unclassified circuit is from Raytheon, courtesy Gerry Marino. +* +* _______ +* -------- 2in _________________ 2in | | +* | BJT |______| |______|Diode| +* | |------| |------| | +* | Drvr | line | 2-wire | line |rcvr.| +* -------- | coupled | |_____| +* | transmission | +* |-/\/\/\/\----| line |-------\/\/\/\/\----| +* | 50ohms | | 50ohms | +* | | | | +* Ground ----------------- Ground +* +* +* Each inch of the lossy line is modelled by 10 LRC lumps in the +* Raytheon model. + +* The line parameters (derived from the Raytheon input file) are: +* L = 9.13nH per inch +* C = 3.65pF per inch +* R = 0.2 ohms per inch +* K = 0.482 [coupling coefficient; K = M/sqrt(L1*L2)] +* Cc = 1.8pF per inch +* +* coupled ltra model generated using the standalone program +* multi_decomp + +* the circuit +*tran 0.1ns 60ns + +v1 1 0 0v pulse(0 4 1ns 1ns 1ns 20ns 40ns) +*v1 1 0 4v pulse(4 0 1ns 1ns 1ns 20ns 40ns) +vcc 10 0 5v + +* series termination +*x1 1 oof 10 bjtdrvr +*rseries oof 2 50 + +x1 1 2 10 bjtdrvr +rt1 3 0 50 + + +* convolution model +x2 2 3 4 5 conv2wetcmodel + +* rlc segments model +*x2 2 3 4 5 rlc2wetcmodel + +x3 4 dioload +rt2 5 0 50 + + + +.model qmodn npn(bf=100 rb=100 cje=0.09375pF cjc=0.28125pF is=1e-12 ++pe=0.5 pc=0.5) + +.model qmodpd npn(bf=100 rb=100 cje=0.08187pF cjc=0.2525pF is=1e-12 ++pe=0.5 pc=0.5) +.model qmodpdmine npn(bf=100 rb=100 cje=0.08187pF cjc=0.05pF is=1e-12 ++pe=0.5 pc=0.5) + +.model dmod1 d(n=2.25 is=1.6399e-4 bv=10) + +.model dmod2 d + +.model dmod d(vj=0.3v) + +.model diod1 d(tt=0.75ns vj=0.6 rs=909 bv=10) + +.model diod2 d(tt=0.5ns vj=0.3 rs=100 bv=10) + +.options acct reltol=1e-3 abstol=1e-12 +.control +tran 0.1ns 60ns 0 0.35N +plot v(2) v(4) v(5) +.endc + +* bjt driver - 19=input, 268=output, 20=vcc; wierd node numbers from +* the Raytheon file + +.subckt bjtdrvr 19 268 20 +q1 22 18 13 qmodn +q2 18 16 13 qmodn +qd2 21 9 0 qmodn +q4 14 14 0 qmodn +q3 16 15 14 qmodpd +q5 8 13 17 qmodn +q6 25 12 0 qmodn +q7 6 17 0 qmodpd +qd1 26 10 0 qmodn +q8 7 11 10 qmodn +*q10 268 17 0 qmodpd +q10 268 17 0 qmodpdmine +q9 7 10 268 qmodn + +d1 0 19 dmod1 +d2 18 19 dmod2 +d3 13 19 dmod +dq1 18 22 dmod +dq2 16 18 dmod +d502 9 21 dmod +dq3 15 16 dmod +d10 24 8 dmod +d4 15 6 dmod +dq6 12 25 dmod +dq7 17 6 dmod +dd1 17 10 dmod +d7 11 6 dmod +dd2 17 26 dmod +d9 23 6 dmod +dq8 11 7 dmod +d501 17 268 dmod +dq9 10 7 dmod +d14 20 27 dmod +d8 0 268 dmod + +r1 18 20 6k +r2 22 20 2.2k +r4 0 13 7k +rd1 9 13 2k +rd2 21 13 3k +r3 16 20 10k +r5 15 20 15k +r9 0 17 4k +r6 24 20 750 +r10 12 17 2k +r12 24 11 1.5k +r11 25 17 3k +r15 23 20 10k +r13 0 10 15k +r14 7 27 12 + +.ends bjtdrvr + +* subckt dioload - diode load: input=28, output=4, vcc=5 + +.subckt dioload 28 +*comment out everything in dioload except d5 and r503, and watch +* the difference in results obtained between a tran 0.1ns 20ns and +* a tran 0.01ns 20ns +vccint 5 0 5v + +c1 28 0 5pF +r503 0 4 5.55 +r4 0 28 120k +r5 1 5 7.5k + +d5 4 28 diod2 +d1 1 28 diod1 +d4 2 0 diod1 +d3 3 2 diod1 +d2 1 3 diod1 +.ends dioload + +* subckt rlclump - one RLC lump of the lossy line + +.subckt rlclump 1 2 +*r1 1 3 0.02 +*c1 3 0 0.365pF +*l1 3 2 0.913nH + +l1 1 3 0.913nH +c1 2 0 0.365pF +r1 3 2 0.02 + +*r1 1 3 0.01 +*c1 3 0 0.1825pF +*l1 3 4 0.4565nH +*r2 4 5 0.01 +*c2 5 0 0.1825pF +*l2 5 2 0.4565nH + +*c1 1 0 0.365pF +*l1 1 2 0.913nH +.ends lump + +.subckt rlconeinch 1 2 +x1 1 3 rlclump +x2 3 4 rlclump +x3 4 5 rlclump +x4 5 6 rlclump +x5 6 7 rlclump +x6 7 8 rlclump +x7 8 9 rlclump +x8 9 10 rlclump +x9 10 11 rlclump +x10 11 2 rlclump +.ends rlconeinch + +.subckt rlctwoinch 1 2 +x1 1 3 rlconeinch +x2 3 2 rlconeinch +.ends rlctwoinch + +.subckt rlcfourinch 1 2 +x1 1 3 rlconeinch +x2 3 4 rlconeinch +x3 4 5 rlconeinch +x4 5 2 rlconeinch +.ends rlcfourinch + +.subckt rlcfiveinch 1 2 +x1 1 3 rlconeinch +x2 3 4 rlconeinch +x3 4 5 rlconeinch +x4 5 6 rlconeinch +x5 6 2 rlconeinch +.ends rlcfiveinch + +.subckt rlctwentyrlcfourinch 1 2 +x1 1 3 rlcfiveinch +x2 3 4 rlcfiveinch +x3 4 5 rlcfiveinch +x4 5 6 rlcfiveinch +x5 6 2 rlcfourinch +.ends rlctwentyrlcfourinch + +.subckt rlclumpstub A B C D +x1 A int1 rlcfiveinch +x2 int1 int2 rlcfiveinch +x3 int2 1 rlcfiveinch +x4 1 2 rlcfourinch +x5 1 int3 rlcfiveinch +x6 int3 B rlconeinch +x7 2 C rlcfiveinch +x8 2 D rlcfourinch +.ends rlclumpstub + +.subckt ltrastub A B C D +yy1 A 0 1 0 ylline15in +yy2 1 0 B 0 ylline6in +yy3 1 0 2 0 ylline4in +yy4 2 0 C 0 ylline5in +yy5 2 0 D 0 ylline4in +.ends ltrastub + +*modelling using R and lossless lines + +*5 segments per inch +.model yllfifth txl r=0 g=0 l=9.13e-9 c=3.65e-12 length=0.2 + +.subckt xlump 1 2 +y1 1 0 3 0 yllfifth +r1 2 3 0.04 +.ends xlump + +.subckt xoneinch 1 2 +x1 1 3 xlump +x2 3 4 xlump +x3 4 5 xlump +x4 5 6 xlump +x5 6 2 xlump +*x5 6 7 xlump +*x6 7 8 xlump +*x7 8 9 xlump +*x8 9 10 xlump +*x9 10 11 xlump +*x10 11 2 xlump +.ends xoneinch + +.subckt xFourinch 1 2 +x1 1 3 xoneinch +x2 3 4 xoneinch +x3 4 5 xoneinch +x4 5 2 xoneinch +.ends xfourinch + +.subckt xfiveinch 1 2 +x1 1 3 xoneinch +x2 3 4 xoneinch +x3 4 5 xoneinch +x4 5 6 xoneinch +x5 6 2 xoneinch +.ends xfiveinch + +.subckt xlumpstub A B C D +x1 A int1 xfiveinch +x2 int1 int2 xfiveinch +x3 int2 1 xfiveinch +x4 1 2 xfourinch +x5 1 int3 xfiveinch +x6 int3 B xoneinch +x7 2 C xfiveinch +x8 2 D xfourinch +.ends xlumpstub + +* modelling a 2 wire coupled system using RLC lumps +* 10 segments per inch +* +* 1---xxxxx----2 +* 3---xxxxx----4 + +.subckt rlc2wlump 1 3 2 4 +l1 1 5 0.913nH +c1 2 0 0.365pF +r1 5 2 0.02 +l2 3 6 0.913nH +c2 4 0 0.365pF +r2 6 4 0.02 +cmut 2 4 0.18pF +k12 l1 l2 0.482 +.ends rlc2wlump + +.subckt rlc2woneinch 1 2 3 4 +x1 1 2 5 6 rlc2wlump +x2 5 6 7 8 rlc2wlump +x3 7 8 9 10 rlc2wlump +x4 9 10 11 12 rlc2wlump +x5 11 12 13 14 rlc2wlump +x6 13 14 15 16 rlc2wlump +x7 15 16 17 18 rlc2wlump +x8 17 18 19 20 rlc2wlump +x9 19 20 21 22 rlc2wlump +x10 21 22 3 4 rlc2wlump +.ends rlc2woneinch + +.subckt rlc2wfiveinch 1 2 3 4 +x1 1 2 5 6 rlc2woneinch +x2 5 6 7 8 rlc2woneinch +x3 7 8 9 10 rlc2woneinch +x4 9 10 11 12 rlc2woneinch +x5 11 12 3 4 rlc2woneinch +.ends rlc2wfiveinch + +.subckt rlc2wtwentyinch 1 2 3 4 +x1 1 2 5 6 rlc2wfiveinch +x2 5 6 7 8 rlc2wfiveinch +x3 7 8 9 10 rlc2wfiveinch +x4 9 10 3 4 rlc2wfiveinch +.ends rlc2wtwentyinch + +.subckt rlc2wetcmodel 1 2 3 4 +x1 1 5 rlctwoinch +x2 5 2 6 4 rlc2wtwentyinch +x3 6 3 rlctwoinch +.ends rlc2wetcmodel + +* Subcircuit conv2wtwentyinch +* conv2wtwentyinch is a subcircuit that models a 2-conductor transmission line with +* the following parameters: l=9.13e-09, c=3.65e-12, r=0.2, g=0, +* inductive_coeff_of_coupling k=0.482, inter-line capacitance cm=1.8e-12, +* length=20. Derived parameters are: lm=4.40066e-09, ctot=5.45e-12. +* +* It is important to note that the model is a simplified one - the +* following assumptions are made: 1. The self-inductance l, the +* self-capacitance ctot (note: not c), the series resistance r and the +* parallel capacitance g are the same for all lines, and 2. Each line +* is coupled only to the two lines adjacent to it, with the same +* coupling parameters cm and lm. The first assumption imply that edge +* effects have to be neglected. The utility of these assumptions is +* that they make the sL+R and sC+G matrices symmetric, tridiagonal and +* Toeplitz, with useful consequences. +* +* It may be noted that a symmetric two-conductor line will be +* accurately represented by this model. + +* swec model +.model plines cpl ++R=0.2 0 ++ 0.2 ++L=9.13e-9 4.4e-9 ++ 9.13e-9 ++G=0 0 0 ++C=5.45e-12 -1.8e-12 ++ 5.45e-12 ++length=20 + +.model yconvtwoinch txl r=0.2 g=0 l=9.13e-9 c=3.65e-12 length=2.0 +.subckt conv2wetcmodel 1 2 3 4 +y1 1 0 5 0 yconvtwoinch +p2 5 2 0 6 4 0 plines +y2 6 0 3 0 yconvtwoinch +.ends conv2wetcmodel + +.end |