Wave transmission lines and networks – Plural channel systems – Having branched circuits
Reexamination Certificate
2011-04-05
2011-04-05
Pascal, Robert (Department: 2817)
Wave transmission lines and networks
Plural channel systems
Having branched circuits
C333S130000, C333S134000, C333S136000
Reexamination Certificate
active
07920035
ABSTRACT:
A microwave, power splitter/combiner (20) is formed as part of a multilayer laminate (27, 28, 29, 33, 34) such that two ports (22, 23) are connected by plated vias (31, 32) to conductive pads (29, 30) connected across an isolation resistor (27). Furthermore, a microwave circuit is provided in the form of a multi-layer laminate including a substrate carrying a resistive layer which has been etched to define at least one resistor, a dielectric membrane covering the resistor, a conductive layer defining at least part of an electrical circuit, and said at least one resistor is electrically connected to the conductive layer by vias extending through the dielectric membrane.
REFERENCES:
patent: 4450418 (1984-05-01), Yum et al.
patent: 4639694 (1987-01-01), Seino et al.
patent: 4777718 (1988-10-01), Henderson et al.
patent: 6570466 (2003-05-01), Bahl
patent: 7213327 (2007-05-01), Su et al.
patent: 2004/0061568 (2004-04-01), Ishida et al.
patent: 0 735 605 (1996-10-01), None
patent: 1 087 460 (2001-03-01), None
patent: 2005-44955 (2005-02-01), None
Tokumitsu, et. al.,Multilayer MMIC Using a 3 μmXN-Layer Dielectric Film Structure,IEICE Transactions on Electronics, vol. E75-C, No. 6, Jun. 1992, pp. 698-706.
Cheng, et. al.,Quantitative Analysis of Resistance Variations in as-Deposited Nickel-Phosphorus(NIP)Embedded Resistors,2003 Electronic Components and Technology Conference, IEEE, pp. 156-160.
Kautio, et. al.,20 GHz Wilkinson Power Dividers in LTCC Technology,VTT Electronics, 2004, pp. 38-39.
Kassner, et. al.,Highly Integrated Power Distribution Networks on Multilayer LTCC for Ka-band Multiple-Beam Phased Array Antennas,IMAPS Nordic Conference, Sep. 21, 2003, pp. 51-54.
Hasegawa, et. al.,Multi-Branch Power Dividers Using Multilayer MMIC Technology,IEICE Transactions on Electronics, vol. E75-C, No. 6, Jun. 1992, pp. 707-712.
European Search Report dated Apr. 25, 2006 (Four (4) pages).
Crowell & Moring LLP
Glenn Kimberly E
Pascal Robert
Selex Galileo Ltd.
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