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494 Subject Index
length. electrical, 84
IDs-siess, 182
L·section equivalent, 83
open wire. 337
as paralleled resonators, 337
slubs. 82, 83. 85
as two~port network, 8\
unifo~m, 81
Trap:
approximations, 366
in direct-coupled filters, 292
irlVerter effects. 46\
loaded Q product effect. 295
permutation algorithm, 354, 357, 384
Trapezoidal intergration. 13, 14
Tuning:
direct-coupted filter, 325
end coupling, 325
Turning point, 138
Two-port input impedance, 60
TWO-POfl networks:
embedded in ladder. 7&
series impedance, 79
shunt admittance. 79
Two·port parameters;
chain (ABeD), 49, 50, 78
open-circuit. definition, 54
open-circuit determinant. 60
short-circuit, definition, 54
Unilaterial figure of merit, 268
Unit-source sensitivity, 107, 108, 112
Univariarlt search, 129
Unloaded Q:
definition, 295
effect on minimum loss, 382
uniform, 359
Vector:
column, definition, 103
inner product, 144
single-subscript array, l7
squared norm, 144
Voltage between nodes, 70
Waves:
emerging, 93
incident, 93
traveling, 94
Weddle's rule, 18
Weighted sum, 21
Weighting value, 26, 27, 151
Word length:
filter degree limitation, 56
finite, 16, 21, 149
Zeros:
Butterworth function, 309
Chebyshev function, 307
of complex polynomials, 34
Fano function, 312
rci1cction, 48
transmission, 45, 48
Zigzagging, 129
ZLC, 58
ZRLC, 58, 60