Wave transmission lines and networks – Coupling networks – Delay lines including long line elements
Reexamination Certificate
2006-10-17
2006-10-17
Lee, Benny (Department: 2817)
Wave transmission lines and networks
Coupling networks
Delay lines including long line elements
C333S164000
Reexamination Certificate
active
07123115
ABSTRACT:
An embodiment of the present invention provides a phase shifter, comprising: a base dielectric layer; a tunable dielectric layer overlaying at least a portion of the base dielectric layer; and at least two conductors overlaying at least a portion of the tunable dielectric layer, the at least two conductors positioned so as to form a slot-line topology. In an embodiment of the present invention the slot-line may be between 2 μm and 5 μm wide and the tunable dielectric layer may be between 0.3 μm to 1.5 μm thick. Further, the slot-line topology may be a uniform slot-line topology throughout the length of the at least two conductors and the slot-line topology may have an edge ratio defined by r=Llow/(Llow+Lhigh). The edge ratio may be optimized for minimizing metal loss and minimizing dielectric loss for a given phase shifter length. In an embodiment of the present invention the value of r may be between 0.1 and 0.2.
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PCT International Search Report for International Application No. PCT/US04/25879 dated Apr. 10, 2006.
Finn James S.
Lee Benny
Paratek Microwave Inc.
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