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486 Subject Index<br />

second kind, 32. 314, 341<br />

Chebyshev response, 67, 458<br />

Circles:<br />

bilateral gain, 264<br />

concentric, 264<br />

eccentric, 253<br />

unilateral gain, 269<br />

Circutator. three·pan, 78<br />

Coefficients:<br />

bilinear, 232, 241, 261<br />

complex. 11. 35<br />

Levy's, 27<br />

mapping, 242, 245, 249<br />

normalization, 10<br />

pivot. 10<br />

power series. 20, 22<br />

real linear equations, 8<br />

reflection, generalized, 46<br />

scaling, 21<br />

weighting. 22<br />

Combline fiher, 301<br />

Commensurate filters, 336<br />

Complex four functions, 7, 386<br />

Comptex linear update, 73, &0, 92<br />

Complex variables:<br />

polar format, 7<br />

polar.to-reclangular conversion. 82<br />

rectangular format, 7t<br />

Computer program features. 2. 46<br />

Computing. an <strong>of</strong>. 1<br />

Conditioning:, numerical. 21, 26, 64. 232<br />

Conic. 121<br />

Conjugate gradient:<br />

algorithm. 134<br />

directions. 450<br />

Conjugate match, 173<br />

Conjugate pairs. 38. 45, 64<br />

Conjugate terminations, 252<br />

Conjugate vectors. 134, 135<br />

Constraints:<br />

active, 157<br />

binding, 157<br />

equality, 157<br />

feasible, 165<br />

implicit, 157<br />

inequality. 157<br />

linear. 162<br />

mixed, 165<br />

satisfied~when-exceeded. 157, 165<br />

transformations for variables, 161<br />

upper and lower bounds, 157. 159<br />

Continued fraction expansion',<br />

examples, 52<br />

Hurwitz test using, 54<br />

input resistance, 296<br />

(owpass and highpass. 52<br />

<strong>of</strong> reactance functions, 51<br />

shorthand notation for, 52<br />

Convergence, 136. 145<br />

Conversion, three~port to two-port, 238<br />

Convolution integral. 97<br />

Coupling:<br />

between bars, 343<br />

coefficient. 285, 302<br />

edge, 336<br />

end, 302<br />

mutual magnetic, 284<br />

selectivity effects. 303<br />

Cramer's rule. 233<br />

Current division, 87<br />

Currents in shunt branches, 70<br />

Curve fitting. complex, 26<br />

Damping. terminating conductance, 255<br />

Data:<br />

discrete, 25<br />

noisy, 25, 234<br />

transistor, 252, 255, 265. 270, 272<br />

triple~, 27, 232<br />

DATA statement, JI<br />

Decrement, 74, 88, 112. 193, 198. 201, 378.<br />

380<br />

Derivative:<br />

by Cauchy-Riemann principle, 35<br />

directional, 137, 138. 168<br />

exact panial, 104, 11 L 112<br />

by finite differences, 103, ilL 112, 144<br />

normalized partial, 102<br />

by numerical differentiation, 97<br />

<strong>of</strong> objective function, 116<br />

operator notation. 101, 105<br />

partial. 26, 33, 36, 65, 103<br />

programming <strong>of</strong>, 126<br />

scaling. 101<br />

second, 124<br />

<strong>Design</strong> steps, I 13<br />

Determinant, 233<br />

Direct~coup\ed filters:<br />

equivalent network at tune frequency, 296<br />

design example. 327<br />

design flowchart, 321<br />

design limitations, 323<br />

equal-stub realiLation, 337<br />

equations. 457<br />

origins, 273<br />

overview. 5<br />

prototype network, 273. 276, 278, 337<br />

selectivity, 275<br />

sensitivities, 324<br />

shunt-L adjustments, 323<br />

transfer function, 279<br />

tuning rule, 288<br />

Direct filter design overview. 6<br />

Dissipation effect on:<br />

input resistance. 295<br />

inverters. 297

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