Wave transmission lines and networks – Plural channel systems – Nonreciprocal gyromagnetic type
Patent
1998-06-25
2000-02-15
Gensler, Paul
Wave transmission lines and networks
Plural channel systems
Nonreciprocal gyromagnetic type
333 242, H01P 1387, H01P 136
Patent
active
060257598
ABSTRACT:
Disclosed is a surface mounting type isolator, which comprises: ferrite 1 having an internal magnetic field so as to render an external magnetic field unnecessary; ceramic substrate 5 into which ferrite 1 is inserted; full-surface grounding conductor 7 disposed on one surface of ceramic substrate 5; branch lines 2, 3 disposed on the other surface of ceramic substrate 5, branch lines 2,3 being connected to two input/output terminals 11, 12; connecting portion 4 disposed on ferrite 1 and connected to branch lines 2, 3; and terminating resistor 6 connected to connecting portion 4.
REFERENCES:
patent: 3456213 (1969-07-01), Hershenov
patent: 3770639 (1973-11-01), Okazaki et al.
patent: 4259684 (1981-03-01), Dean et al.
patent: 5776275 (1998-07-01), Krishnamurthy et al.
Tadashi Hashimoto, Sohgohdenshi Shuppan, "Microwave Ferrite and Application Technologies", pp. 36-37,May 10, 1997.
Yoshihiko Akaiwa and Takeo Okazaki, "An Application of a Hexagonal Ferrite to a Millimeter-Wave Y Circulator", IEEE Transactions of Magnetics, vol. Mag-10, No. 2, Jun. 1974.
Lax et al., Microwave Ferrites and Ferrimagnetics, McGraw-Hill, N.Y., title page & p. 10, 1962.
Gensler Paul
NEC Corporation
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