Wave transmission lines and networks – Plural channel systems – Having branched circuits
Reexamination Certificate
2006-03-10
2010-12-21
Takaoka, Dean O (Department: 2817)
Wave transmission lines and networks
Plural channel systems
Having branched circuits
C333S121000, C333S246000
Reexamination Certificate
active
07855616
ABSTRACT:
An RF switch includes first, second and third transmission lines for forming ports, respectively, and first, second and third slot line pattern portions connected to one another, for transferring signals to the first, second and third transmission lines, respectively. The first slot line pattern portion has a slot line pattern for transferring a signal received from the first transmission line to a connection point with the other slot line pattern portions, and a switching circuit for shorting the gap of a corresponding slot line and thus blocking the signal transfer. The second slot line pattern portion includes a loop slot line formed by a first and a second half loop slot line, a second sub-slot line for transferring a signal received from the connection point to the second transmission line through the loop slot line, and a switching circuit for shorting the gap of a corresponding slot line.
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Hettak, K. et al., A 38-GHz Integrated Uniplanar Subsystem for High-Speed Wireless Broad-Band Multimedia Systems; IEEE: Transactions on Microwave Theory and Techniques; Jun. 1, 1999; pp. 935-942; vol. 47, No. 6.
Lee Gil-ho
Lee Kang-hyun
Fischer, Esq. John G.
KMW Inc.
Storm LLP
Storm, Esq. Paul V.
Takaoka Dean O
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