Low profile and compact surface mount circulator on ball...

Details Low profile and compact surface mount circulator on ball... Low profile and compact surface mount circulator on ball...

2008-07-30

2011-10-18

Jones, Stephen (Department: 2817)

Wave transmission lines and networks

Plural channel systems

Nonreciprocal gyromagnetic type

C333S024200

Reexamination Certificate

active

08040199

ABSTRACT:
A surface mount circulator. The novel circulator includes a substrate, a predetermined number of microstrip lines disposed on a first surface of the substrate, a ground layer and a predetermined number of electrical contacts disposed on the second surface of the substrate, and a mechanism for coupling each microstrip line to one of the electrical contacts. In an illustrative embodiment, the circulator uses edge wrap metallization to wrap a microstrip line down a side of the substrate to connect with a corresponding contact. A ball grid array can then be used to connect the signal contacts and ground at the second surface of the substrate with a circuit board. The circulator also includes a magnet on first surface of the substrate over a resonator circuit connecting the microstrip lines and a pole piece on the second surface of the substrate beneath the ground to provide magnetic bias to the substrate.

REFERENCES:
patent: 6914496 (2005-07-01), Tanaka
patent: 2006/0226924 (2006-10-01), Chen et al.

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