Wave transmission lines and networks – Plural channel systems – Nonreciprocal gyromagnetic type
Reexamination Certificate
2006-06-06
2006-06-06
Jones, Stephen E. (Department: 2817)
Wave transmission lines and networks
Plural channel systems
Nonreciprocal gyromagnetic type
C333S024200
Reexamination Certificate
active
07057471
ABSTRACT:
The present invention is directed to a non-reciprocal device whose use makes it possible to reduce the insertion loss, and the size and thickness of its body, and broaden the frequency band treated by it. The DC magnetic field is adjusted such that, in a Smith chart where the center O1represents the normalized impedance, the impedance of the gyromagnetic component2is positioned at a value which is on a constant conductance circle smaller than the reference constant conductance circle EC0passing the center O1and which is on a constant reactance line above the reference constant reactance line EX0passing the center O1. Inductor L11or L12has one end connected to a terminal of the center conductor such that in the Smith chart, the impedance of the gyromagnetic component2seen from the other end of the inductor L11or L12is positioned at a value which is on the reference constant conductance circle EC0passing the center O1. First capacitor C21or C22is connected, in parallel with the center conductor, to the other end of the inductor L11or L12such that in the Smith chart, the impedance of the gyromagnetic component2seen through the inductor from the connection point of the first capacitor is positioned at a value which is on the center O1.
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Jones Stephen E.
Oblon & Spivak, McClelland, Maier & Neustadt P.C.
TDK Corporation
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