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Etude et conception de structures de filtrage actif radiofréquence ...

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Annexe II : Les paramètres S en mo<strong>de</strong>s mixtes<br />

Les équations <strong>de</strong>s paramètres S en mo<strong>de</strong>s mixtes sont :<br />

Mo<strong>de</strong> DD :<br />

Mo<strong>de</strong> CD :<br />

Mo<strong>de</strong> DC :<br />

Mo<strong>de</strong> CC :<br />

S dd 11<br />

Sdd 21<br />

Scd11 Scd 21<br />

S dc11<br />

S dc21<br />

Scc 11<br />

Scc 21<br />

1<br />

1<br />

= ( S11<br />

− S12<br />

− S 21 + S 22 ) Sdd 12 = ( S13<br />

− S14<br />

− S 23 + S 24 )<br />

2<br />

2<br />

=<br />

1<br />

( S<br />

2<br />

31<br />

− S<br />

32<br />

− S<br />

41<br />

+ S<br />

42<br />

)<br />

S dd 22<br />

=<br />

1<br />

(<br />

2<br />

S<br />

33<br />

− S<br />

34<br />

− S<br />

43<br />

+ S<br />

1<br />

1<br />

= ( S11<br />

− S12<br />

+ S 21 − S22<br />

) Scd12 = ( S13<br />

− S14<br />

+ S 23 − S 24 )<br />

2<br />

2<br />

=<br />

1<br />

( S<br />

2<br />

31<br />

− S<br />

32<br />

+ S<br />

41<br />

− S<br />

42<br />

)<br />

Scd 22<br />

=<br />

1<br />

(<br />

2<br />

S<br />

33<br />

− S<br />

34<br />

+ S<br />

43<br />

− S<br />

1<br />

1<br />

= ( S11<br />

+ S12<br />

− S 21 − S 22 ) S dc12<br />

= ( S13<br />

+ S14<br />

− S 23 − S 24 )<br />

2<br />

2<br />

1<br />

1<br />

= ( S31<br />

+ S32<br />

+ S 41 − S 42 ) Sdc22 = ( S33<br />

+ S34<br />

− S43<br />

− S44<br />

)<br />

2<br />

2<br />

1<br />

1<br />

= ( S11<br />

+ S12<br />

+ S21<br />

+ S 22 ) Scc 12 = ( S13<br />

+ S14<br />

+ S 23 + S24<br />

)<br />

2<br />

2<br />

1<br />

1<br />

= ( S31<br />

+ S32<br />

+ S 41 + S 42 ) Scc 22 =<br />

( S33<br />

+ S34<br />

+ S43<br />

+ S 44 )<br />

2<br />

2<br />

44<br />

44<br />

)<br />

)<br />

246

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