elec 412 rf & microwave engineering
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ELEC 412 RF & Microwave Engineering. Fall 2004 Lecture 18. Balanced Single Stub Matching. - PowerPoint PPT PresentationTRANSCRIPT
ELEC 412 - Lecture 18 1
ELEC 412
RF & Microwave Engineering
Fall 2004
Lecture 18
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Balanced Single Stub MatchingBecause of the parallel connection, the total admittance of the
stubs will be double that of each leg, that is, Ybal = 2Ystub. A single unbalanced stub of length d can be converted into an equivalent balanced stub of length db by requiring that the two configurations provide the same admittance.
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Balanced Single Stub Matching
stubopenβdaπλdβdβd
stubshortedβdaπλdβdβd
bb
bb
2tantan
2tantan2
2cotcot
2cotcot2
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Unbalanced Single Stub Matching
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Balanced Single Stub Matching
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