APPARATUS AND METHODS FOR SPLIT-FEED COUPLED-RING RESONATOR-PAIR ELLIPTIC-FUNCTION FILTERS - Patent 1782496

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EP 1 782 496 A1

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(43)	Date of publication:
	09.05.2007 Bulletin 2007/19

(21)	Application number: 04779847.5

(22)	Date of filing: 30.07.2004

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International Patent Classification (IPC):

H01P 1/203^(2006.01)

(86)	International application number:
	PCT/US2004/024913

(87)	International publication number:
	WO 2006/022672 (02.03.2006 Gazette 2006/09)

(84)	Designated Contracting States:
	AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PL PT RO SE SI SK TR

(71)	Applicant: Raytheon Company
	Waltham, Massachusetts 02451-1449 (US)

(72)	Inventor:
	LUQUE, Norman A. Londonderry, NH 03053 (US)

(74)	Representative: Spaargaren, Jerome
	EIP Fairfax House 15 Fulwood Place London WC1V 6HU London WC1V 6HU (GB)

(54)	APPARATUS AND METHODS FOR SPLIT-FEED COUPLED-RING RESONATOR-PAIR ELLIPTIC-FUNCTION FILTERS