Isolator comprising three central conductors intersecting each o

Details Isolator comprising three central conductors intersecting each o Isolator comprising three central conductors intersecting each o

1997-12-01

1999-11-30

Gensler, Paul

Wave transmission lines and networks

Coupling networks

Nonreciprocal gyromagnetic type

333 11, H01P 136

Patent

active

059949740

ABSTRACT:
The intersection angle formed by the central conductor connected to an input port and the central conductor connected to an output port is set to more than 120 degrees, preferably about 130 to 150 degrees, for example 140 degrees. The central conductor connected to a terminating port preferably bisects the above-described intersection angle and may be set to either 110 degrees or 70 degrees, for example. The resistance of a terminating resistor connected to the terminating port is set to about 200 to 500 .OMEGA., for example 300 .OMEGA..

REFERENCES:
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patent: 5745014 (1998-04-01), Okada et al.
patent: 5838209 (1998-11-01), Okada et al.
How H. et al.: "Novel Filter Design Incorporating Asymmetrical Stripline Y-Junction Circulators" IEEE Transactions on Microwave Theory and Techniques, vol. 39, No. 1, Jan. 1, 1991, pp. 40-46, XP000174141.
Ishikawa Y et al.: "An Automatically Assembled Miniaturized SMD Isolator for 1.9GHZ Band Communicatiojns Sytems" Proceedings of the Japan International Electronic Manufacturing Technology Symposium (Japan IEMT), Kanazawa, Jun. 9-11, 1993, No. SYMP. 14, Jun. 9, 1993, Institute of Electrical and Electronics Engineers, pp. 113-116, XP000506044.
European Search Report dated Mar. 6, 1998.

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