Wave transmission lines and networks – Plural channel systems – Nonreciprocal gyromagnetic type
Reexamination Certificate
2008-01-28
2008-09-30
Chang, Daniel D (Department: 2819)
Wave transmission lines and networks
Plural channel systems
Nonreciprocal gyromagnetic type
C333S024200
Reexamination Certificate
active
07429901
ABSTRACT:
An isolator includes first, second, and third center electrodes coupled in a high frequency manner with a ferrite member to which a direct-current magnetic field is applied by a permanent magnet. The first and third electrodes do not intersect with each other, and intersect with the second electrode in a mutually insulated state. Connection is established so that a magnetic field generated when a current flows from one end to the other end of the first electrode, and a magnetic field generated when a current flows from one end to the other end of the third electrode have the same phase and direction. A capacitor and a resistor are connected in parallel to the electrode, a capacitor is connected in parallel to the electrode, and a capacitor and a resistor are connected in parallel to the electrode. One end of the first electrode and the other end of the third electrode define balanced input ports, and the other end of the first electrode, one end of the second electrode, the other end of the second electrode, and one end of the third electrode define balanced output ports.
REFERENCES:
patent: 6549086 (2003-04-01), Kawanami
patent: 6965277 (2005-11-01), Kawanami
patent: 7253697 (2007-08-01), Soda et al.
patent: 2006/0132255 (2006-06-01), Kawanami
patent: 2007/0046390 (2007-03-01), Soda et al.
patent: 52-052546 (1977-04-01), None
patent: 2004-088743 (2004-03-01), None
patent: 2004-304434 (2004-10-01), None
Official communication issued in the International Application No. PCT/JP2006/312781, mailed on Aug. 1, 2006.
Kawanami; “Non-reciprocal Circuit Element, Composite Electronic Component, and Communication Apparatus”; U.S. Appl. No. 12/020,701, filed Jan. 28, 2008.
Chang Daniel D
Keating & Bennett LLP
Murata Manufacturing Co. Ltd.
LandOfFree
Non-reciprocal circuit element, composite electronic... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Non-reciprocal circuit element, composite electronic..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Non-reciprocal circuit element, composite electronic... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3987336